{"id":10021031,"date":"2025-10-14T13:46:12","date_gmt":"2025-10-14T05:46:12","guid":{"rendered":"https:\/\/itmax.cn\/?p=10021031"},"modified":"2025-10-14T13:46:12","modified_gmt":"2025-10-14T05:46:12","slug":"%e7%ba%bf%e7%a8%8b%e6%b1%a0threadpoolexecutor%e6%ba%90%e7%a0%81%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90%ef%bd%9c%e5%be%97%e7%89%a9%e6%8a%80%e6%9c%af","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10021031","title":{"rendered":"\u7ebf\u7a0b\u6c60ThreadPoolExecutor\u6e90\u7801\u6df1\u5ea6\u89e3\u6790\uff5c\u5f97\u7269\u6280\u672f"},"content":{"rendered":"<h2>\u4e00\u3001\u5f15 \u8a00<\/h2>\n<p><strong>\u4e3a\u4ec0\u4e48\u8fdb\u884c\u6e90\u7801\u89d2\u5ea6\u7684\u6df1\u5ea6\u89e3\u6790\uff1f<\/strong><\/p>\n<p>\u5927\u5bb6\u5728\u9879\u76ee\u4e2d\u5230\u5904\u90fd\u5728\u4f7f\u7528\u7ebf\u7a0b\u6c60\u505a\u4e00\u4e9b\u6027\u80fd\u63a5\u53e3\u5c42\u6b21\u7684\u4f18\u5316\uff0c\u539f\u5148\u4e32\u884c\u7684\u591a\u4e2a\u8fdc\u7a0b\u8c03\u7528\uff0c\u56e0\u4e3art\u8fc7\u9ad8\uff0c\u901a\u8fc7\u7ebf\u7a0b\u6c60\u6279\u91cf\u5f02\u6b65\u4f18\u5316\uff0c\u4ece\u800c\u964d\u4f4ert\u3002\u8fd8\u6709\u50cfRocketMQ\u4e2dbroker\u542f\u52a8\u65f6\uff0c\u540c\u65f6\u901a\u8fc7ScheduledThreadPoolExecutor\u7ebf\u7a0b\u6c60\u6267\u884c\u5176\u4ed6\u7ec4\u4ef6\u7684\u5b9a\u65f6\u4efb\u52a1\uff0c\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u5904\u7406\u76f8\u5173\u7684\u4efb\u52a1\u3002\u7ebf\u7a0b\u6c60\u5e7f\u6cdb\u7684\u5e94\u7528\u5728\u5916\u9762\u5404\u79cd\u5b9e\u9645\u5f00\u53d1\u573a\u666f\u4e2d\uff0c\u6211\u4eec\u5f88\u591a\u540c\u5b66\u53ef\u80fd\u5728\u9879\u76ee\u91cc\u53ea\u662f\u7b80\u5355\u7684copy\u4e86\u4e00\u4e9b\u524d\u4eba\u7684\u4ee3\u7801\u53c2\u6570\u5e76\u4e0d\u77e5\u9053\u5176\u4e2d\u7684\u542b\u4e49\uff0c\u4ece\u800c\u5bfc\u81f4\u751f\u4ea7\u7ea7\u522b\u7684bug\u3002\u6240\u4ee5\u672c\u7bc7\u6587\u7ae0\uff0c\u65e8\u5728\u5e2e\u52a9\u8fd8\u4e0d\u719f\u6089\u6216\u8005\u60f3\u8981\u719f\u6089\u7ebf\u7a0b\u6c60\u7684\u540c\u5b66\uff0c\u5206\u4eab\u6211\u81ea\u5df1\u5728\u5b66\u4e60\u7ebf\u7a0b\u6c60\u6e90\u7801\u4e0a\u7684\u4e00\u4e9b\u5185\u5bb9\u6765\u66f4\u7b80\u5355\u3001\u5feb\u901f\u7684\u638c\u63e1\u7ebf\u7a0b\u6c60\u3002<\/p>\n<h2>\u4e8c\u3001\u4e3a\u4ec0\u4e48\u4f7f\u7528\u7ebf\u7a0b\u6c60\uff1f<\/h2>\n<p>\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0c\u5bf9\u4e8e\u5e38\u89c1\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u7ebf\u7a0b\u90fd\u662f\u6267\u884c\u4efb\u52a1\u7684\u57fa\u672c\u5355\u5143\uff0c\u5982\u679c\u6bcf\u6b21\u6267\u884c\u4efb\u52a1\u65f6\u90fd\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\uff0c\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u53c8\u8fdb\u884c\u9500\u6bc1\uff0c\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u7684\u95ee\u9898\uff1a<\/p>\n<ul>\n<li><strong>\u8d44\u6e90\u5f00\u9500<\/strong>\uff1a\u6bd4\u5982\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u9891\u7e41\u7684\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\uff0c\u4e00\u4e2a\u662f\u9891\u7e41\u7684\u8fdb\u884c\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528\uff0c\u53e6\u5916\u662f\u4e00\u4e9b\u5185\u5b58\u548cCPU\u8d44\u6e90\u8c03\u5ea6\u7684\u5360\u7528\u3002\u867d\u7136\u6709\u4e00\u4e9b\u5199\u65f6\u590d\u5236\u7684\u7b56\u7565\u9632\u6b62lwp\u7684\u521b\u5efa\u65f6\u7684\u5185\u5b58\u5360\u7528\uff0c\u4f46\u662f\u5b9e\u9645\u5199\u5165\u8fd8\u662f\u4f1a\u7533\u8bf7\u7cfb\u7edf\u5185\u5b58\u7684\uff0c\u4f55\u51b5\u4e00\u4e9b\u9875\u8868\u7b49\u672c\u8eab\u5c31\u6709\u5185\u5b58\u5360\u7528\u3002<\/li>\n<li><strong>\u6027\u80fd\u74f6\u9888<\/strong>\uff1a\u7ebf\u7a0b\u7684\u521b\u5efa\u9700\u8981\u7cfb\u7edf\u8c03\u7528\uff0c\u5982\u679c\u53ea\u662f\u7b80\u5355\u7684\u8ba1\u7b97\u4efb\u52a1\uff0c\u53ef\u80fd\u8017\u65f6\u8fd8\u6ca1\u521b\u5efa\u7684rt\u9ad8\uff0c\u8fd9\u91cc\u53cd\u800c\u964d\u4f4e\u4e86\u7cfb\u7edf\u7684\u541e\u5410\u91cf\u3002<\/li>\n<li><strong>\u7f3a\u4e4f\u8d44\u6e90\u7ba1\u7406<\/strong>\uff1a\u65e0\u9650\u5236\u7684\u521b\u5efa\u7ebf\u7a0b\u4f1a\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\uff0cjava.lang.OutOfMemoryError: unable to create native thread\uff0c\u8fd9\u91cc\u4e3b\u8981\u56e0\u4e3aJava\u7684\u7ebf\u7a0b\u5176\u5b9eLinux\u4e2d\u662flwp\u7ebf\u7a0b\uff0c\u9700\u8981\u901a\u8fc7JNI\u8fdb\u884c\u7cfb\u7edf\u8c03\u7528\u521b\u5efa\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u9ed8\u8ba4\u9700\u89811MB\u7684\u6808\u7a7a\u95f4\uff0c\u5f88\u5bb9\u6613\u5bfc\u81f4\u65e0\u4f11\u6b62\u7684\u521b\u5efa\u7ebf\u7a0b\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\uff0c\u53e6\u5916\u5c31\u662f\u9891\u7e41\u7684\u7cfb\u7edf\u8c03\u7528\uff0c\u5bfc\u81f4\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u5360\u7528\u4e86\u8fc7\u591a\u7684CPU\uff0c\u53cd\u800c\u8d77\u5230\u4e86\u76f8\u53cd\u7684\u4f5c\u7528\u3002<\/li>\n<li><strong>\u529f\u80fd\u53d7\u9650<\/strong>\uff1a\u624b\u52a8\u7ba1\u7406\u7ebf\u7a0b\u96be\u4ee5\u5b9e\u73b0\u66f4\u9ad8\u7ea7\u7684\u529f\u80fd\uff0c\u5982\u5b9a\u65f6\u4efb\u52a1\u3001\u5468\u671f\u4efb\u52a1\u3001\u4efb\u52a1\u7ba1\u7406\u3001\u5e76\u53d1\u4efb\u52a1\u6570\u7684\u63a7\u5236\u7b49\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4e0a\u9762\u7684\u95ee\u9898\uff0c\u6211\u4eec\u5176\u5b9e\u53ef\u4ee5\u6e05\u6670\u7684\u611f\u77e5\u5230\u8fd9\u4e9b\u95ee\u9898\u90fd\u662f\u5f52\u62e2\u5230\u8d44\u6e90\u6ca1\u6709\u5f97\u5230\u5408\u7406\u7684\u5206\u914d\u548c\u63a7\u5236\u5bfc\u81f4\u7684\uff0c\u7ebf\u7a0b\u6c60\u51fa\u73b0\u7684\u6838\u5fc3\u5b97\u65e8\u5176\u5b9e\u5c31\u662f\u5bf9\u8d44\u6e90\u7684\u5408\u7406\u5206\u914d\u548c\u63a7\u5236\u3002\u9664\u4e86\u7ebf\u7a0b\u6c60\uff0c\u5176\u5b9e\u66f4\u591a\u7684\u4e5f\u63a5\u89e6\u8fc7\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u3001netty\u7684\u5bf9\u8c61\u6c60\u7b49\u6c60\u5316\u6280\u672f\uff0c\u8fd9\u4e9b\u6c60\u5316\u601d\u60f3\u5176\u5b9e\u90fd\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u964d\u4f4e\u8d44\u6e90\u7684\u6d88\u8017\u4ee5\u53ca\u66f4\u597d\u7684\u8fdb\u884c\u8d44\u6e90\u7ba1\u7406\u3002<\/p>\n<h2>\u4e09\u3001JDK\u7ebf\u7a0b\u6c60\u7684\u67b6\u6784\u8bbe\u8ba1<\/h2>\n<h2>3.1 JUC\u5e76\u53d1\u5305\u4e0b\u7684Executor\u6846\u67b6\u7684uml\u7c7b\u56fe<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"649\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVdmIcO\" alt=\"image.png\" title=\"image.png\"><\/p>\n<ul>\n<li><strong>Executor<\/strong>\uff1a\u4efb\u52a1\u6267\u884c\u7684\u9876\u5c42\u63a5\u53e3\uff0c\u4e3b\u8981\u662f\u5206\u79bb\u4efb\u52a1\u63d0\u4ea4\u4e0e\u6267\u884c\u903b\u8f91\uff0c\u652f\u6301\u540c\u6b65\/\u5f02\u6b65\u6267\u884c\uff0c\u9075\u5faaJava\u5185\u5b58\u6a21\u578b\u7684\u00a0happen-before\u89c4\u5219\u3002<\/li>\n<li><strong>ExecutorService<\/strong>\uff1a\u7ee7\u627fExecutor\u63a5\u53e3\uff0c\u63d0\u4f9b\u4e86\u66f4\u5b8c\u5584\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406\u80fd\u529b\uff0c\u901a\u8fc7Future\u5bf9\u8c61\u63d0\u4f9b\u4efb\u52a1\u53d6\u6d88\u3001\u72b6\u6001\u67e5\u8be2\u3001\u7ed3\u679c\u83b7\u53d6\u80fd\u529b\u5b9e\u73b0\u4e86\u4efb\u52a1\u76d1\u63a7\u3002<\/li>\n<li><strong>AbstractExecutorService<\/strong>\uff1a\u5e38\u89c1\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e3a\u4e86\u7b80\u5316\u7ebf\u7a0b\u6c60\u7684\u5f00\u53d1\uff0c\u901a\u5e38\u901a\u8fc7\u7236\u7c7b\u8fdb\u884c\u4e00\u4e9b\u57fa\u7840\u7684\u9ed8\u8ba4\u5b9e\u73b0\u8ba9\u5b50\u7c7b\u7ee7\u627f\u3002<\/li>\n<li><strong>ScheduledExecutorService<\/strong>\uff1aExecutorService\u7684\u6269\u5c55\u63a5\u53e3\uff0c\u652f\u6301\u5ef6\u8fdf\u6267\u884c\u548c\u5468\u671f\u6027\u4efb\u52a1\u8c03\u5ea6\u3002<\/li>\n<li><strong>ThreadPoolExecutor<\/strong>\uff1a\u662fExecutorService\u63a5\u53e3\u6700\u6838\u5fc3\u548c\u6700\u5e38\u7528\u7684\u5b9e\u73b0\u7c7b\uff0c\u5b83\u63d0\u4f9b\u4e86\u9ad8\u5ea6\u53ef\u914d\u7f6e\u7684\u7ebf\u7a0b\u6c60\uff0c\u5141\u8bb8\u6211\u4eec\u7cbe\u7ec6\u63a7\u5236\u7ebf\u7a0b\u6c60\u7684\u5404\u79cd\u884c\u4e3a\u3002<\/li>\n<li><strong>ScheduledThreadPoolExecutor<\/strong>\uff1a\u662fScheduledExecutorService\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\uff0c\u5b83\u7ee7\u627f\u81eaThreadPoolExecutor\uff0c\u4e13\u95e8\u7528\u4e8e\u5904\u7406\u5b9a\u65f6\u548c\u5468\u671f\u4efb\u52a1\u3002<\/li>\n<li><strong>Executors<\/strong>\uff1a\u4e00\u4e2a\u9759\u6001\u5de5\u5382\u6a21\u5f0f\u7684\u5de5\u5177\u7c7b\uff0c\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u9759\u6001\u65b9\u6cd5\u6765\u521b\u5efa\u5404\u79cd\u5e38\u89c1\u914d\u7f6e\u7684\u7ebf\u7a0b\u6c60\uff0cnewFixedThreadPool(), newCachedThreadPool(),\u7b49\uff0c\u7b80\u5316\u4e86\u521b\u5efa\u7ebf\u7a0b\u6c60\u7684\u4f7f\u7528\u4f46\u662f\u4f1a\u5e26\u6765\u4e00\u4e9b\u95ee\u9898\uff0c\u5f88\u591a\u5f00\u53d1\u89c4\u8303\u91cc\u90fd\u4e0d\u5efa\u8bae\u5927\u5bb6\u76f4\u63a5\u4f7f\u7528\u3002JDK\u5185\u7f6e\u7684\u7ebf\u7a0b\u6c60\u5982\u679c\u6211\u4eec\u4e0d\u719f\u6089\u91cc\u9762\u7684\u53c2\u6570\u5f88\u6709\u53ef\u80fd\u5bfc\u81f4\u51fa\u4e4e\u81ea\u5df1\u610f\u6599\u7684\u7ed3\u679c\uff0c\u6c60\u5927\u5c0f\u8bbe\u7f6e\u3001\u963b\u585e\u961f\u5217\u9009\u62e9\u7b49\u7b49\u90fd\u662f\u6709\u8003\u7a76\u7684\uff0c\u8fd9\u4e00\u70b9\u540e\u7eed\u4f1a\u8fdb\u884c\u4e00\u4e9b\u8be6\u7ec6\u8bf4\u660e\u3002\u751f\u4ea7\u73af\u5883\u4e2d\u5efa\u8bae\u8c28\u614e\u4f7f\u7528\u6216\u76f4\u63a5\u4f7f\u7528ThreadPoolExecutor\u6784\u9020\u51fd\u6570\u81ea\u5b9a\u4e49\u3002<\/li>\n<\/ul>\n<h2>3.2 ThreadPoolExecutor\u7684\u53c2\u6570\u89e3\u6790<\/h2>\n<p><img decoding=\"async\" width=\"723\" height=\"458\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVdmIcN\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<ul>\n<li><strong>corePoolSize<\/strong> \u6838\u5fc3\u7ebf\u7a0b\u6570\uff1a<\/li>\n<li>\n<ul>\n<li>\u7ebf\u7a0b\u6c60\u4e2d\u8fd8\u672a\u9000\u51fa\u7684alive\u7684\u6838\u5fc3\u7ebf\u7a0b\u6570\u91cf\u3002<\/li>\n<li>\u867d\u7136\u7ebf\u7a0b\u5904\u4e8e\u7a7a\u95f2\u72b6\u6001\uff08\u5176\u5b9e\u662f\u963b\u585e\u5728\u963b\u585e\u961f\u5217\u4e2d\uff09\uff0c\u9664\u975e\u663e\u793a\u8bbe\u7f6e\u4e86allowCoreThreadTimeOut=true\uff0c\u5426\u5219\u8fd9\u4e9b\u7ebf\u7a0b\u4e0d\u4f1a\u4ece\u81ea\u5df1\u7684run\u65b9\u6cd5\u4e2d\u9000\u51fa\u88ab\u56de\u6536\u3002<\/li>\n<li>\u6dfb\u52a0\u65b0\u4efb\u52a1\u65f6\uff0c\u5982\u679c\u5f53\u524d\u5de5\u4f5c\u7ebf\u7a0b\u5c0f\u4e8ecoreSize\uff0c\u6b64\u65f6\u5373\u4f7f\u5b58\u5728\u7a7a\u95f2\u7684core\u7ebf\u7a0b\uff0c\u7ebf\u7a0b\u6c60\u4e5f\u4f1a\u901a\u8fc7addWorker\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\u3002<br \/>*<\/li>\n<\/ul>\n<\/li>\n<li><strong>maximumPoolSize<\/strong> \u6700\u5927\u7ebf\u7a0b\u6570\uff1a<\/li>\n<li>\n<ul>\n<li>\u7ebf\u7a0b\u6c60\u53ef\u4ee5\u521b\u5efa\u7684\u6700\u5927\u7ebf\u7a0b\u6570\u3002<\/li>\n<li>\u5982\u679c\u662f\u6709\u754c\u961f\u5217\uff0c\u5f53\u961f\u5217\u6ee1\u65f6\uff0c\u4ecd\u7136\u6709\u4efb\u52a1\u8fdb\u6765\uff0c\u6b64\u65f6\u7ebf\u7a0b\u6c60\u4f1a\u521b\u5efa\u5c0f\u4e8e\u6700\u5927\u7ebf\u7a0b\u6570\u7684\u7ebf\u7a0b\u6765\u5b8c\u6210\u4efb\u52a1\uff0c\u7a7a\u95f2\u3002<\/li>\n<li>\u5982\u679c\u662f\u65e0\u754c\u961f\u5217\uff0c\u90a3\u4e48\u6c38\u8fdc\u4e0d\u4f1a\u51fa\u73b0\u7b2c\u4e8c\u70b9\u7684\u60c5\u51b5\uff0c\u9664\u4e86\u5185\u5b58\u5f02\u5e38\uff0c\u5426\u5219\u4f1a\u4e00\u76f4\u4fdd\u6301\u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u591a\u4f59\u7684\u4efb\u52a1\u4f1a\u4e00\u76f4\u5f80\u961f\u5217\u4e2d\u52a0\u5165\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li><strong>keepAliveTime<\/strong>\u00a0\u7ebf\u7a0b\u7a7a\u95f2\u5b58\u6d3b\u65f6\u95f4<\/li>\n<li>\n<ul>\n<li>\u7ebf\u7a0b\u6570\u8d85\u8fc7corePoolSize\u540e\u521b\u5efa\u7684\u7ebf\u7a0b\u6211\u4eec\u7406\u89e3\u4e3a\u975e\u6838\u5fc3\u7ebf\u7a0b\uff0c\u5bf9\u4e8e\u8fd9\u7c7b\u7ebf\u7a0b\uff0c\u4ed6\u7684\u56de\u6536\u673a\u5236\u5728\u4e8e\u6211\u4eec\u8bbe\u7f6e\u7684keepAliveTime,\u7ebf\u7a0b\u4f1a\u9650\u671f\u963b\u585e\u5728\u961f\u5217\u4e2d\u83b7\u53d6\u4efb\u52a1\uff0c\u5982\u679c\u8d85\u65f6\u672a\u83b7\u53d6\u5c31\u4f1a\u8fdb\u884c\u6e05\u7406\u5e76\u9000\u51fa\u3002<\/li>\n<li>\u53e6\u5916\u5982\u679c\u8bbe\u7f6eallowCoreThreadTimeOut=true\uff0c\u6240\u8c13\u7684\u6838\u5fc3\u7ebf\u7a0b\u5728\u7a7a\u95f2\u65f6\u95f4\u8fbe\u5230keepAliveTime\u65f6\u4e5f\u4f1a\u88ab\u56de\u6536\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li><strong>unit<\/strong> \u65f6\u95f4\u5355\u4f4d<\/li>\n<li>\n<ul>\n<li>keepAliveTime\u53c2\u6570\u7684\u65f6\u95f4\u5355\u4f4d\uff0cTimeUnit\u4e2d\u65f6\u5206\u79d2\u7b49\u3002<br \/>*<\/li>\n<\/ul>\n<\/li>\n<li><strong>workQueue<\/strong> \u4efb\u52a1\u961f\u5217<\/li>\n<li>\n<ul>\n<li>\u963b\u585e\u961f\u5217\uff0c\u6838\u5fc3\u7ebf\u7a0b\u6570\u6ee1\u65f6\uff0c\u65b0\u52a0\u5165\u7684\u4efb\u52a1\uff0c\u4f1a\u5148\u6dfb\u52a0\u5230\u963b\u585e\u961f\u5217\u4e2d\u7b49\u5f85\u7ebf\u7a0b\u83b7\u53d6\u4efb\u52a1\u5e76\u6267\u884c\u3002<\/li>\n<li>\u5e38\u7528\u7684BlockingQueue\u5b9e\u73b0\u6709\uff1a<\/li>\n<li>\n<ul>\n<li>ArrayBlockingQueue\uff1a\u6570\u7ec4\u5b9e\u73b0\u7684\u5148\u8fdb\u5148\u51fa\u539f\u5219\u7684\u6709\u754c\u963b\u585e\u961f\u5217\uff0c\u6784\u9020\u65b9\u6cd5\u5fc5\u987b\u6307\u5b9a\u5bb9\u91cf\u3002<\/li>\n<li>LinkedBlockingQueue\uff1a\u94fe\u8868\u5b9e\u73b0\u7684\u963b\u585e\u961f\u5217\uff0c\u6784\u9020\u4f20\u5165\u5bb9\u91cf\u5219\u6709\u754c\uff0c\u672a\u4f20\u5219\u662f\u65e0\u754c\u961f\u5217\uff0c\u6b64\u65f6\u8bbe\u7f6e\u7684\u6700\u5927\u7ebf\u7a0b\u6570\u5176\u5b9e\u5c31\u4e0d\u4f1a\u6709\u4f5c\u7528\u4e86\u3002<\/li>\n<li>SynchronousQueue\uff1a\u4e00\u4e2a\u4e0d\u5b58\u50a8\u5143\u7d20\u7684\u963b\u585e\u961f\u5217\u3002\u6bcf\u4e2aput\u64cd\u4f5c\u5fc5\u987b\u7b49\u5f85\u4e00\u4e2atake\u64cd\u4f5c\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002\u5b83\u76f8\u5f53\u4e8e\u4e00\u4e2a\u4f20\u9012\u901a\u9053\uff0c\u975e\u5e38\u9002\u5408\u4f20\u9012\u6027\u9700\u6c42\uff0c\u541e\u5410\u91cf\u9ad8\uff0c\u4f46\u8981\u6c42maximumPoolSize\u8db3\u591f\u5927\u3002<\/li>\n<li>PriorityBlockingQueue\uff1a\u4e8c\u53c9\u5806\u5b9e\u73b0\u7684\u4f18\u5148\u7ea7\u963b\u585e\u961f\u5217\uff0c\u6784\u9020\u65f6\u53ef\u81ea\u884c\u8c03\u6574\u6392\u5e8f\u884c\u4e3a\uff08\u5c0f\u9876\u5806\u6216\u5927\u9876\u5806\uff09\u3002<\/li>\n<li>DelayQueue\uff1a\u652f\u6301\u5ef6\u65f6\u7684\u65e0\u754c\u963b\u585e\u961f\u5217\uff0c\u4e3b\u8981\u7528\u4e8e\u5468\u671f\u6027\u7684\u4efb\u52a1\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\u5b83\u6765\u5b9e\u73b0\u4e00\u4e9b\u7b80\u5355\u7684\u5ef6\u8fdf\u4efb\u52a1\u9700\u6c42\uff0c\u590d\u6742\u7684\u5468\u671f\u6027\u4efb\u52a1\u5efa\u8bae\u4f7f\u7528ScheduledThreadPoolExecutor\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li><strong>threadFactory<\/strong> \u7ebf\u7a0b\u5de5\u5382<\/li>\n<li>\n<ul>\n<li>\u7528\u4e8e\u521b\u5efa\u65b0\u7ebf\u7a0b\u7684\u5de5\u5382\u3002\u901a\u8fc7\u81ea\u5b9a\u4e49ThreadFactory\uff0c\u6211\u4eec\u53ef\u4ee5\u4e3a\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u8bbe\u7f6e\u66f4\u6709\u610f\u4e49\u7684\u540d\u79f0\u3001\u8bbe\u7f6e\u5b88\u62a4\u7ebf\u7a0b\u72b6\u6001\u3001\u8bbe\u7f6e\u7ebf\u7a0b\u4f18\u5148\u7ea7\u3001\u6307\u5b9aUncaughtExceptionHandler\u7b49\u3002<\/li>\n<li>Executors.defaultThreadFactory()\u662f\u9ed8\u8ba4\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li><strong>handler<\/strong> \u62d2\u7edd\u7b56\u7565<\/li>\n<li>\n<ul>\n<li>ThreadPoolExecutor.AbortPolicy\uff1a\u9ed8\u8ba4\u7684\u62d2\u7edd\u7b56\u7565\uff0c\u7b80\u5355\u7c97\u66b4\uff0c\u5f53execute\u4e2d\u6dfb\u52a0woker\u5931\u8d25\u65f6\uff0c\u76f4\u63a5\u5728\u5f53\u524d\u7ebf\u7a0b\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<li>JDK\u5185\u7f6e\u4e86\u56db\u79cd\u62d2\u7edd\u7b56\u7565\uff1a<\/li>\n<li>\n<ul>\n<li>ThreadPoolExecutor.AbortPolicy\uff1a\u9ed8\u8ba4\u7684\u62d2\u7edd\u7b56\u7565\uff0c\u7b80\u5355\u7c97\u66b4\uff0c\u5f53execute\u4e2d\u6dfb\u52a0woker\u5931\u8d25\u65f6\uff0c\u76f4\u63a5\u5728\u5f53\u524d\u7ebf\u7a0b\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<li>ThreadPoolExecutor.CallerRunsPolicy\uff1a\u63d0\u4ea4\u4efb\u52a1\u7684\u7ebf\u7a0b\uff0c\u76f4\u63a5\u6267\u884c\u4efb\u52a1\u3002\u53d8\u76f8\u7684\u80cc\u538b\u673a\u5236\uff0c\u53ef\u4ee5\u964d\u4f4e\u4efb\u52a1\u5f80\u7ebf\u7a0b\u4e2d\u52a0\u5165\u3002<\/li>\n<li>ThreadPoolExecutor.DiscardPolicy\uff1a\u76f4\u63a5\u4e22\u5f03\u88ab\u62d2\u7edd\u7684\u4efb\u52a1\uff0c\u4e0d\u505a\u4efb\u4f55\u901a\u77e5\uff0c\u9700\u5bb9\u5fcd\u6570\u636e\u4e22\u5931\u3002<\/li>\n<li>ThreadPoolExecutor.DiscardOldestPolicy\uff1a\u4e22\u5f03\u961f\u5217\u4e2d\u6700\u65e7\u7684\u4efb\u52a1\uff0c\u7136\u540e\u91cd\u8bd5\u63d0\u4ea4\u5f53\u524d\u4efb\u52a1\uff0c\u9700\u5bb9\u5fcd\u6570\u636e\u4e22\u5931\u3002<\/li>\n<li>\u5b9e\u73b0RejectedExecutionHandler\u63a5\u53e3\u81ea\u5b9a\u4e49\u62d2\u7edd\u7b56\u7565\uff0c\u5728\u5b9e\u9645\u751f\u4ea7\u5e94\u7528\u4e2d\u63a8\u8350\u4f7f\u7528\uff0c\u53ef\u4ee5\u505a\u4e00\u4e9b\u6253\u5370\u89c2\u5bdf\u65e5\u5fd7\u7684\u64cd\u4f5c\uff0c\u544a\u8b66\u3001\u515c\u5e95\u7684\u76f8\u5173\u5904\u7406\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>3.3 \u8fd0\u884c\u673a\u5236\u8be6\u89e3<\/h2>\n<p>\u65b0\u4efb\u52a1\u901a\u8fc7execute()\u65b9\u6cd5\u63d0\u4ea4\u7ed9ThreadPoolExecutor\u65f6\uff0c\u5176\u5904\u7406\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p><strong>\u5224\u65ad\u6838\u5fc3\u7ebf\u7a0b\u6570<\/strong>\uff1a\u5982\u679c\u5f53\u524d\u8fd0\u884c\u7684\u7ebf\u7a0b\u6570\u5c0f\u4e8ecorePoolSize\uff0c\u5219\u521b\u5efa\u65b0\u7ebf\u7a0b\uff08\u5373\u4f7f\u6709\u7a7a\u95f2\u7684\u6838\u5fc3\u7ebf\u7a0b\uff09\u6765\u6267\u884c\u4efb\u52a1\u3002<\/p>\n<p><strong>\u5c1d\u8bd5\u5165\u961f<\/strong>\uff1a\u5982\u679c\u5f53\u524d\u8fd0\u884c\u7684\u7ebf\u7a0b\u6570\u5927\u4e8e\u6216\u7b49\u4e8ecorePoolSize\uff0c\u5219\u5c1d\u8bd5\u5c06\u4efb\u52a1\u6dfb\u52a0\u5230workQueue\u4e2d\u3002<\/p>\n<ul>\n<li>\u5982\u679cworkQueue.offer()\u6210\u529f\uff08\u961f\u5217\u672a\u6ee1\uff09\uff0c\u4efb\u52a1\u5165\u961f\u7b49\u5f85\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><strong>\u5c1d\u8bd5\u521b\u5efa\u975e\u6838\u5fc3\u7ebf\u7a0b<\/strong>\uff1a\u5982\u679cworkQueue.offer()\u5931\u8d25\uff08\u961f\u5217\u5df2\u6ee1\uff09\uff1a<\/p>\n<ul>\n<li>\u5224\u65ad\u5f53\u524d\u8fd0\u884c\u7684\u7ebf\u7a0b\u6570\u662f\u5426\u5c0f\u4e8emaximumPoolSize\uff1b<\/li>\n<li>\u5982\u679c\u662f\uff0c\u5219\u521b\u5efa\u65b0\u7684\u975e\u6838\u5fc3\u7ebf\u7a0b\u6765\u6267\u884c\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<p><strong>\u6267\u884c\u62d2\u7edd\u7b56\u7565\uff1a<\/strong><\/p>\n<p>\u5982\u679c\u5f53\u524d\u8fd0\u884c\u7684\u7ebf\u7a0b\u6570\u4e5f\u8fbe\u5230\u4e86maximumPoolSize\uff08\u5373\u6838\u5fc3\u7ebf\u7a0b\u548c\u975e\u6838\u5fc3\u7ebf\u7a0b\u90fd\u5df2\u7528\u5c3d\uff0c\u4e14\u961f\u5217\u4e5f\u6ee1\u4e86\uff09\uff0c\u5219\u6267\u884cRejectedExecutionHandler\u6240\u5b9a\u4e49\u7684\u62d2\u7edd\u7b56\u7565\u3002<\/p>\n<p>\u53c2\u8003\u7f51\u7edc\u4e2d\u7684\u7ecf\u5178\u6267\u884c\u56fe\uff1a<\/p>\n<p><img decoding=\"async\" width=\"723\" height=\"321\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVdmIcM\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<p>\u8fd9\u4e2a\u56fe\u80fd\u5f88\u597d\u7684\u8868\u660e\u8fd0\u884c\u539f\u7406\uff0c\u4f46\u662f\u5ffd\u7565\u4e86\u5f88\u591a\u7ec6\u8282\uff0c\u6bd4\u5982\u6240\u8c13\u7684\u7f13\u51b2\u6267\u884c\u662f\u5728\u4ec0\u4e48\u6761\u4ef6\u4e0b\u53bb\u8d70\u7684\u5462\uff1f\u76f4\u63a5\u6267\u884c\u53c8\u662f\u4ec0\u4e48\u903b\u8f91\u4e0b\u6267\u884c\u5462\uff1f\u6700\u540e\u7684\u4efb\u52a1\u62d2\u7edd\u53c8\u662f\u600e\u4e48\u56de\u4e8b\uff1f\u5e26\u7740\u8fd9\u4e9b\u7591\u95ee\u70b9\uff0c\u6211\u4eec\u76f4\u63a5\u6765\u8fdb\u884c\u4e00\u4e2a\u6e90\u7801\u7ea7\u522b\u7684\u5206\u6790\uff1a<\/p>\n<h2>execute\u6838\u5fc3\u6d41\u7a0b\u7684\u6e90\u7801\u5206\u6790<\/h2>\n<pre><code>public\u00a0void\u00a0execute(Runnable command)\u00a0{\n\u00a0 \u00a0\u00a0if\u00a0(command ==\u00a0null)\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0NullPointerException();\n\u00a0 \u00a0\u00a0\/\/\u7ebf\u7a0b\u6c60\u72b6\u6001 \u9ad83\u4f4d\u8868\u793a\u7ebf\u7a0b\u72b6\u6001 \u4f4e29\u4f4d\u4ee3\u8868\u7ebf\u7a0b\u6570\u91cf\n\u00a0 \u00a0\u00a0int\u00a0c = ctl.get();\n\u00a0 \u00a0\u00a0\/\/\u5224\u65ad\u5f53\u524d\u7ebf\u7a0b\u6c60\u7ebf\u7a0b\u6570\u91cf\u662f\u5426\u5c0f\u4e8e\u6838\u5fc3\u7ebf\u7a0b\u6570\n\u00a0 \u00a0\u00a0if\u00a0(workerCountOf(c) &lt; corePoolSize) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u4f5c\u4e3a\u6838\u5fc3\u7ebf\u7a0b\u6570\u8fdb\u884c\u7ebf\u7a0b\u7684\u521b\u5efa\uff0c\u5e76\u4e14\u521b\u5efa\u6210\u529f\u7ebf\u7a0b\u4f1a\u5c06command\u7684\u4efb\u52a1\u6267\u884c--\u300b\u5bf9\u5e94\u56fe\u4e0a\u7684\u76f4\u63a5\u6267\u884c\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(addWorker(command,\u00a0true))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return;\n\u00a0 \u00a0 \u00a0 \u00a0 c = ctl.get();\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\/\/\u521b\u5efa\u6838\u5fc3\u7ebf\u7a0b\u5931\u8d25\u6216\u8005\u5f53\u524d\u7ebf\u7a0b\u6570\u91cf\u8d85\u8fc7\u6838\u5fc3\u7ebf\u7a0b\u6570\n\u00a0 \u00a0\u00a0\/\/\u5f53\u524d\u7ebf\u7a0b\u6c60\u662f\u5426\u8fd8\u5728\u8fd0\u884c\u72b6\u6001\uff0c\u5c1d\u8bd5\u5c06\u4efb\u52a1\u6dfb\u52a0\u5230\u963b\u585e\u961f\u5217 --\u300b\u5bf9\u5e94\u56fe\u4e0a\u7684\u7f13\u51b2\u6267\u884c\n\u00a0 \u00a0\u00a0\/\/BlockingQueue\u961f\u5217\u7684\u9876\u7ea7\u62bd\u8c61\u5b9a\u4e49\u4e86offer\u4e0d\u662f\u8fdb\u884c\u963b\u585e\u6dfb\u52a0\u800c\u662f\u7acb\u5373\u8fd4\u56de\uff0c\u6dfb\u52a0\u5931\u8d25\u76f4\u63a5\u8fd4\u56defalse\uff0c\u533a\u522b\u4e8eput\n\u00a0 \u00a0\u00a0if\u00a0(isRunning(c) &amp;&amp; workQueue.offer(command)) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u91cd\u65b0\u83b7\u53d6\u7ebf\u7a0b\u6c60\u6807\u5fd7\u4f4d\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0recheck = ctl.get();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5982\u679c\u7ebf\u7a0b\u6b64\u65f6\u4e0d\u5728\u8fd0\u884c\u72b6\u6001\u4e2d\uff0c\u90a3\u4e48\u5c06\u4efb\u52a1\u5220\u9664\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(! isRunning(recheck) &amp;&amp;\u00a0remove(command))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5220\u9664\u4efb\u52a1\u6210\u529f\uff0c\u8d70\u62d2\u7edd\u7b56\u7565\u62d2\u7edd\u6389\u5f53\u524d\u4efb\u52a1\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 reject(command);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0else\u00a0if\u00a0(workerCountOf(recheck) ==\u00a00)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5982\u679c\u7ebf\u7a0b\u6c60\u4e2d\u7684\u5de5\u4f5c\u7ebf\u7a0b\u90fd\u6ca1\u6709\u7684\u65f6\u5019\uff0c\u8fd9\u91cc\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u6267\u884c\u6dfb\u52a0\u5230\u961f\u5217\u4e2d\u7684\u4efb\u52a1\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u9632\u6b62\u56e0\u4e3a\u5e76\u53d1\u7684\u539f\u56e0\u5de5\u4f5c\u7ebf\u7a0b\u90fd\u88ab\u7ec8\u6b62\u6389\u4e86\uff0c\u6b64\u65f6\u4efb\u52a1\u5728\u963b\u585e\u961f\u5217\u91cc\u7b49\u7740\uff0c\u7f3a\u6ca1\u6709\u5de5\u4f5c\u7ebf\u7a0b\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 addWorker(null,\u00a0false);\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\/\/\u5230\u8fd9\u91cc\u90a3\u5c31\u662f\u6dfb\u52a0\u961f\u5217\u5931\u8d25\uff0c\u6216\u8005\u7ebf\u7a0b\u6c60\u72b6\u6001\u5f02\u5e38\uff0c\u4f46\u662f\u8fd9\u91cc\u4ecd\u7136\u5c1d\u8bd5\u8fdb\u884c\u521b\u5efa\u4e00\u4e2aworker\n\u00a0 \u00a0\u00a0\/\/\u5982\u679c\u521b\u5efa\u5931\u8d25\uff0c\u4e5f\u662f\u8d70\u62d2\u7edd\u7b56\u7565\u62d2\u7edd\u5f53\u524d\u4efb\u52a1\n\u00a0 \u00a0\u00a0else\u00a0if\u00a0(!addWorker(command,\u00a0false))\n\u00a0 \u00a0 \u00a0 \u00a0 reject(command);\n}\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\u6211\u4eec\u4ed4\u7ec6\u770b\u770baddWorker\u8fd9\u4e2a\u65b9\u6cd5\u5177\u4f53\u662f\u5728\u505a\u4ec0\u4e48\uff1a<\/p>\n<pre><code>\/\/\u6838\u5fc3\u903b\u8f91\u5176\u5b9e\u5c31\u662f\u5728\u65e0\u9650\u5faa\u73af\u521b\u5efa\u4e00\u4e2aworker\uff0c\u521b\u5efa\u5931\u8d25\u76f4\u63a5\u8fd4\u56de\uff0c\u521b\u5efa\u6210\u529f\uff0c\u5219\u5c06worker\u6267\u884c\n\/\/ \u56e0\u4e3aworker\u6709thread\u7684\u6210\u5458\u53d8\u91cf\uff0c\u6700\u7ec8\u6dfb\u52a0worker\u6210\u529f\uff0c\u4f1a\u542f\u52a8\u7ebf\u7a0b\u7684start\u65b9\u6cd5\n\/\/start\u65b9\u6cd5\u6700\u7ec8\u4f1a\u56de\u8c03\u5230\u5916\u5c42\u7684runWorker\u65b9\u6cd5\uff0c\u6539\u65b9\u6cd5\u4f1a\u4e0d\u505c\u7684\u4ece\u963b\u585e\u961f\u5217\u91cc\u4ee5\u963b\u585e\u7684take\u65b9\u5f0f\n\/\/\u83b7\u53d6\u4efb\u52a1\uff0c\u9664\u975e\u8fbe\u5230\u80fd\u88ab\u7ec8\u6b62\u7684\u6761\u4ef6\uff0c\u6b64\u65f6\u5f53\u524d\u7ebf\u7a0b\u4f1a\u7ec8\u6b62\nprivate\u00a0boolean\u00a0addWorker(Runnable firstTask,\u00a0boolean\u00a0core)\u00a0{\n\u00a0 \u00a0 retry:\n\u00a0 \u00a0\u00a0for\u00a0(;;) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0c\u00a0=\u00a0ctl.get();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0rs\u00a0=\u00a0runStateOf(c);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ Check if queue empty only if necessary.\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(rs &gt;= SHUTDOWN &amp;&amp;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ! (rs == SHUTDOWN &amp;&amp;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0firstTask ==\u00a0null\u00a0&amp;&amp;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0! workQueue.isEmpty()))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0false;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0for\u00a0(;;) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0wc\u00a0=\u00a0workerCountOf(c);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(wc &gt;= CAPACITY ||\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 wc &gt;= (core ? corePoolSize : maximumPoolSize))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0false;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u4e0d\u505c\u7684\u91cd\u8bd5\u6dfb\u52a0worker\u7684\u8ba1\u6570\uff0c\u53ea\u6709\u6dfb\u52a0\u6210\u529f\u7684\u624d\u4f1a\u8fdb\u884c\u540e\u7eed\u7684worker\u542f\u52a8\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(compareAndIncrementWorkerCount(c))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0break\u00a0retry;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 c = ctl.get(); \u00a0\/\/ Re-read ctl\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u91cd\u8bd5\u671f\u95f4\uff0c\u5982\u679c\u5176\u4ed6\u7ebf\u7a0b\u5bfc\u81f4\u7ebf\u7a0b\u6c60\u72b6\u6001\u4e0d\u4e00\u81f4\u4e86\u3002\u91cd\u65b0\u56de\u5230\u7b2c\u4e00\u4e2a\u5faa\u73af\u8fdb\u884ccheck\u5224\u65ad\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(runStateOf(c) != rs)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0continue\u00a0retry;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ else CAS failed due to workerCount change; retry inner loop\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0boolean\u00a0workerStarted\u00a0=\u00a0false;\n\u00a0 \u00a0\u00a0boolean\u00a0workerAdded\u00a0=\u00a0false;\n\u00a0 \u00a0\u00a0Worker\u00a0w\u00a0=\u00a0null;\n\u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 w =\u00a0new\u00a0Worker(firstTask);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0final\u00a0Thread\u00a0t\u00a0=\u00a0w.thread;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(t !=\u00a0null) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u8fd9\u91cc\u52a0\u9501\u4e00\u4e2a\u662fworkers.add\u65f6\u9700\u8981\u52a0\u9501\uff0c\u53e6\u5916\u662f\u9632\u6b62\u5176\u4ed6\u7ebf\u7a0b\u5df2\u7ecf\u5728\u5c1d\u8bd5\u4fee\u6539\u7ebf\u7a0b\u6c60\u72b6\u6001\u4e86\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0final\u00a0ReentrantLock\u00a0mainLock\u00a0=\u00a0this.mainLock;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mainLock.lock();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ Recheck while holding lock.\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ Back out on ThreadFactory failure or if\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ shut down before lock acquired.\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0rs\u00a0=\u00a0runStateOf(ctl.get());\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(rs &lt; SHUTDOWN ||\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (rs == SHUTDOWN &amp;&amp; firstTask ==\u00a0null)) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(t.isAlive())\u00a0\/\/ precheck that t is startable\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0IllegalThreadStateException();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5c06worker\u7684\u5f15\u7528\u6dfb\u52a0\u5230workers\u7684hashSet\u4e2d\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 workers.add(w);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0s\u00a0=\u00a0workers.size();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u66f4\u65b0\u7ebf\u7a0b\u6c60\u6b64\u65f6\u6700\u5927\u7684\u7ebf\u7a0b\u6570\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(s &gt; largestPoolSize)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 largestPoolSize = s;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 workerAdded =\u00a0true;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mainLock.unlock();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5982\u679c\u6dfb\u52a0\u6210\u529f\uff0c\u5c31\u542f\u52a8worker\u4e2d\u7684\u7ebf\u7a0b\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(workerAdded) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 t.start();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 workerStarted =\u00a0true;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u8fd9\u91cc\u6dfb\u52a0\u5931\u8d25\u7684\u8bdd\uff0c\u9700\u8981\u628a\u7ebf\u7a0b\u6c60\u7684count\u6570\u8fdb\u884c--\uff0c\u5e76\u4e14\u8981\u628aworker\u5f15\u7528\u4ecehashSer\u4e2d\u79fb\u9664\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(! workerStarted)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 addWorkerFailed(w);\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0return\u00a0workerStarted;\n}\n<\/code><\/pre>\n<h2>3.4 \u7ebf\u7a0b\u6c60\u7684\u751f\u547d\u5468\u671f<\/h2>\n<p>\u5728\u4ecb\u7ecd\u8fd0\u884c\u673a\u5236\u539f\u7406\u7684\u6e90\u7801\u5206\u6790\u65f6\uff0c\u5176\u5b9e\u662f\u6709\u63d0\u5230\u7ebf\u7a0b\u6c60\u72b6\u6001\u8fd9\u4e2a\u6982\u5ff5\u7684\u3002\u4ecb\u7ecd\u8fd9\u4e2a\u72b6\u6001\u5176\u5b9e\u4e5f\u662f\u8ba9\u5927\u5bb6\u66f4\u65b9\u4fbf\u7684\u53bb\u7ba1\u7406\u7ebf\u7a0b\u6c60\uff0c\u6bd4\u5982\u6211\u4eec\u5173\u95ed\u7ebf\u7a0b\u6c60\u65f6\uff0c\u600e\u4e48\u53bb\u4f18\u96c5\u7684\u5173\u95ed\uff0c\u4f7f\u7528\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u6548\u679c\uff0c\u6211\u4eec\u9700\u8981\u6839\u636e\u81ea\u5df1\u7684\u4e1a\u52a1\u573a\u666f\u53bb\u914c\u60c5\u5206\u6790\u3001\u6743\u8861\u4f7f\u7528\u3002<\/p>\n<pre><code>\/\/\u7ebf\u7a0b\u6c60\u7684\u72b6\u6001\u548c\u8ba1\u6570\u91c7\u7528\u4e00\u4e2aInteger\u53d8\u91cf\u8bbe\u7f6e\u7684\n\/\/\u8fd9\u91cc\u4e4b\u6240\u4ee5\u7528\u4e00\u4e2a\u53d8\u91cf\u6765\u50a8\u5b58\u72b6\u6001\u548c\u6570\u91cf\uff0c\u5176\u5b9e\u5f88\u6709\u8bb2\u7a76\u7684\uff0c\u56e0\u4e3a\u6211\u4eec\u5728\u4e0a\u9762\u7684\u8fd0\u884c\u539f\u7406\u4e0a\u53ef\u4ee5\u770b\u5230\n\/\/\u6e90\u7801\u4e2d\u6709\u5927\u91cf\u7684\u8fdb\u884c\u72b6\u6001\u4ee5\u53ca\u6570\u91cf\u7684\u5224\u65ad\uff0c\u5982\u679c\u5206\u5f00\u91c7\u7528\u53d8\u91cf\u7684\u8bb0\u5f55\u7684\u8bdd\uff0c\u5728\u7ef4\u62a4\u4e8c\u8005\u4e00\u81f4\u6027\u65b9\u9762\n\/\/\u53ef\u80fd\u5c31\u9700\u8981\u52a0\u9501\u7684\u7ef4\u62a4\u6210\u672c\u4e86\uff0c\u800c\u4e14\u8ba1\u7b97\u4e2d\u90fd\u662f\u4f4d\u79fb\u8fd0\u7b97\u4e5f\u662f\u975e\u5e38\u9ad8\u6548\u7684\nprivate\u00a0final\u00a0AtomicInteger\u00a0ctl\u00a0=\u00a0new\u00a0AtomicInteger(ctlOf(RUNNING,\u00a00));\n\/\/\u7ebf\u7a0b\u6c60\u7684\u5927\u5c0f\u7531ctl\u4f4e29\u4f4d\u8868\u793a\uff0c\u73b0\u6210\u72b6\u6001\u7531ctl\u9ad83\u4f4d\u8868\u793a\nprivate\u00a0static\u00a0final\u00a0int\u00a0COUNT_BITS\u00a0=\u00a0Integer.SIZE -\u00a03;\nprivate\u00a0static\u00a0final\u00a0int\u00a0CAPACITY\u00a0 \u00a0=\u00a0(1\u00a0&lt;&lt; COUNT_BITS) -\u00a01;\n\n\n\/\/ \u7ebf\u7a0b\u6c60\u7684\u72b6\u6001\u901a\u8fc7\u7b80\u5355\u7684\u4f4d\u79fb\u5c31\u80fd\u8ba1\u7b97\u51fa\u6765\uff0c\u72b6\u6001\u53ea\u80fd\u4ece\u4f4e\u5230\u9ad8\u6d41\u8f6c\uff0c\u4e0d\u80fd\u9006\u5411\nprivate\u00a0static\u00a0final\u00a0int\u00a0RUNNING\u00a0 \u00a0\u00a0=\u00a0-1\u00a0&lt;&lt; COUNT_BITS;\nprivate\u00a0static\u00a0final\u00a0int\u00a0SHUTDOWN\u00a0 \u00a0=\u00a0\u00a00\u00a0&lt;&lt; COUNT_BITS;\nprivate\u00a0static\u00a0final\u00a0int\u00a0STOP\u00a0 \u00a0 \u00a0 \u00a0=\u00a0\u00a01\u00a0&lt;&lt; COUNT_BITS;\nprivate\u00a0static\u00a0final\u00a0int\u00a0TIDYING\u00a0 \u00a0\u00a0=\u00a0\u00a02\u00a0&lt;&lt; COUNT_BITS;\nprivate\u00a0static\u00a0final\u00a0int\u00a0TERMINATED\u00a0=\u00a0\u00a03\u00a0&lt;&lt; COUNT_BITS;\n\n\n\/\/ \u8fd9\u91cc\u662f\u83b7\u53d6\u7ebf\u7a0b\u72b6\u6001\u4ee5\u53ca\u83b7\u53d6\u7ebf\u7a0b\u6570\u91cf\u7684\u7b80\u5355\u9ad8\u6548\u7684\u4f4d\u79fb\u65b9\u6cd5\nprivate\u00a0static\u00a0int\u00a0runStateOf(int\u00a0c)\u00a0 \u00a0 \u00a0{\u00a0return\u00a0c &amp; ~CAPACITY; }\nprivate\u00a0static\u00a0int\u00a0workerCountOf(int\u00a0c)\u00a0 {\u00a0return\u00a0c &amp; CAPACITY; }\nprivate\u00a0static\u00a0int\u00a0ctlOf(int\u00a0rs,\u00a0int\u00a0wc)\u00a0{\u00a0return\u00a0rs | wc; }\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\u7ed3\u5408\u6e90\u7801\u8be6\u7ec6\u4ecb\u7ecd\u4e0b\u7ebf\u7a0b\u6c60\u76845\u79cd\u72b6\u6001\u4ee5\u53ca\u5206\u522b\u6709\u4ec0\u4e48\u4e0d\u540c\u7684\u8868\u73b0\u884c\u4e3a\uff1f<\/p>\n<pre><code>\u5148\u8bf4\u4e0b\u7ed3\u8bba\uff1a\n\n\nRUNNING\u00a0 \u00a0 \u00a0\u8fd9\u4e2a\u5c31\u662f\u7ebf\u7a0b\u6c60\u8fd0\u884c\u4e2d\u72b6\u6001\uff0c\u6211\u4eec\u53ef\u4ee5\u6dfb\u52a0\u4efb\u52a1\u4e5f\u53ef\u4ee5\u5904\u7406\u963b\u585e\u961f\u5217\u4efb\u52a1\n\n\nSHUTDOWN \u00a0 \u4e0d\u80fd\u6dfb\u52a0\u65b0\u7684\u4efb\u52a1\uff0c\u4f46\u662f\u4f1a\u5c06\u963b\u585e\u961f\u5217\u4e2d\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\n\n\nSTOP \u00a0 \u00a0 \u00a0 \u4e0d\u80fd\u6dfb\u52a0\u65b0\u7684\u4efb\u52a1\uff0c\u6267\u884c\u4e2d\u7684\u7ebf\u7a0b\u4e5f\u4f1a\u88ab\u6253\u65ad\uff0c\u4e5f\u4e0d\u4f1a\u5904\u7406\u963b\u585e\u961f\u5217\u7684\u4efb\u52a1\n\n\nTIDYING \u00a0 \u00a0\u6240\u6709\u7ebf\u7a0b\u90fd\u88ab\u7ec8\u6b62\uff0c\u5e76\u4e14workCount=0\u65f6\u4f1a\u88ab\u7f6e\u4e3a\u7684\u72b6\u6001\n\n\nTERMINATED \u00a0 \u8c03\u7528\u5b8c\u94a9\u5b50\u65b9\u6cd5terminated()\u88ab\u7f6e\u4e3a\u7684\u72b6\u6001\u00a0\n<\/code><\/pre>\n<h2>shutdown\u72b6\u6001\u6e90\u7801\u5206\u6790\uff1a<\/h2>\n<pre><code>\u00a0\n\u00a0\/\/\u7ebf\u7a0b\u6c60\u5173\u95ed\n\u00a0public\u00a0void\u00a0shutdown()\u00a0{\n\u00a0 \u00a0\u00a0final\u00a0ReentrantLock\u00a0mainLock\u00a0=\u00a0this.mainLock;\n\u00a0 \u00a0 mainLock.lock();\n\u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 checkShutdownAccess();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5faa\u73afcas\u8bbe\u7f6e\u7ebf\u7a0b\u6c60\u72b6\u6001\uff0c\u76f4\u5230\u6210\u529f\u6216\u72b6\u6001\u5df2\u7ecfstate&gt;=SHUTDOWN\n\u00a0 \u00a0 \u00a0 \u00a0 advanceRunState(SHUTDOWN);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u8fd9\u4e2a\u662f\u771f\u6b63\u5f97\u51fa\u7ed3\u8bba\u7684\u5730\u65b9\n\u00a0 \u00a0 \u00a0 \u00a0 interruptIdleWorkers();\n\u00a0 \u00a0 \u00a0 \u00a0 onShutdown();\u00a0\/\/ hook for ScheduledThreadPoolExecutor\n\u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 mainLock.unlock();\n\u00a0 \u00a0 }\n\u00a0 \u00a0 tryTerminate();\n}\n\n\nprivate\u00a0void\u00a0interruptIdleWorkers()\u00a0{\n\u00a0 \u00a0 interruptIdleWorkers(false);\n}\n\n\n\/\/\u6253\u65ad\u7a7a\u95f2\u7684\u7ebf\u7a0b\uff0c\u5982\u4f55\u5224\u65ad\u7ebf\u7a0b\u662f\u5426\u7a7a\u95f2\u8fd8\u662f\u8fd0\u884c\uff1f\nprivate\u00a0void\u00a0interruptIdleWorkers(boolean\u00a0onlyOne)\u00a0{\n\u00a0 \u00a0\u00a0final\u00a0ReentrantLock\u00a0mainLock\u00a0=\u00a0this.mainLock;\n\u00a0 \u00a0 mainLock.lock();\n\u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0for\u00a0(Worker w : workers) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Thread\u00a0t\u00a0=\u00a0w.thread;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/worker\u7684\u7ebf\u7a0b\u6ca1\u6709\u88ab\u6253\u65ad\u8fc7\uff0c\u5e76\u4e14\u80fd\u83b7\u53d6\u5230worker\u7684aqs\u72ec\u5360\u9501\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(!t.isInterrupted() &amp;&amp; w.tryLock()) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u6253\u65ad\u5f53\u524d\u7ebf\u7a0b\uff0c\u5982\u679c\u7ebf\u7a0b\u5728\u963b\u585e\u961f\u5217\u4e2d\u963b\u585e\uff0c\u6b64\u65f6\u4f1a\u88ab\u4e2d\u65ad\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 t.interrupt();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(SecurityException ignore) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 w.unlock();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(onlyOne)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0break;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 mainLock.unlock();\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<h2>STOP\u72b6\u6001\u5206\u6790<\/h2>\n<pre><code>\/\/\u5faa\u73afcas\u4fee\u6539\u7ebf\u7a0b\u6c60\u72b6\u6001\u4e3astop\u3002\u6253\u65ad\u6240\u6709\u7ebf\u7a0b\uff0c\u53d6\u51fa\u963b\u585e\u961f\u5217\u7684\u6240\u6709\u4efb\u52a1\npublic\u00a0List&lt;Runnable&gt;\u00a0shutdownNow()\u00a0{\n\u00a0 \u00a0 List&lt;Runnable&gt; tasks;\n\u00a0 \u00a0 final ReentrantLock mainLock =\u00a0this.mainLock;\n\u00a0 \u00a0 mainLock.lock();\n\u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u68c0\u67e5\u7ebf\u7a0b\u7684\u6743\u9650\n\u00a0 \u00a0 \u00a0 \u00a0 checkShutdownAccess();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5c06\u72b6\u6001case\u4e3astop\n\u00a0 \u00a0 \u00a0 \u00a0 advanceRunState(STOP);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u6253\u65ad\u6240\u6709worker\u4e0d\u7ba1\u662f\u4e0d\u662f\u6b63\u5728\u6267\u884c\u4efb\u52a1\n\u00a0 \u00a0 \u00a0 \u00a0 interruptWorkers();\n\u00a0 \u00a0 \u00a0 \u00a0 tasks = drainQueue();\n\u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 mainLock.unlock();\n\u00a0 \u00a0 }\n\u00a0 \u00a0 tryTerminate();\n\u00a0 \u00a0\u00a0return\u00a0tasks;\n}\n\n\n\/\/\u8fd9\u91cc\u83b7\u53d6\u9501\u4e4b\u540e\u3002\u6253\u65ad\u4e86\u6240\u6709\u7684\u7ebf\u7a0b\nprivate\u00a0void\u00a0interruptWorkers()\u00a0{\n\u00a0 \u00a0 final ReentrantLock mainLock =\u00a0this.mainLock;\n\u00a0 \u00a0 mainLock.lock();\n\u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0for\u00a0(Worker w : workers)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 w.interruptIfStarted();\n\u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 mainLock.unlock();\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<h2>TIDYING\u3001TERMINATED\u00a0\u72b6\u6001\u5206\u6790<\/h2>\n<pre><code>\/\/\u8fd9\u4e2a\u65b9\u6cd5\u5728\u6bcf\u4e2a\u7ebf\u7a0b\u9000\u51fa\u65f6\u90fd\u4f1a\u8fdb\u884c\u8c03\u7528\uff0c\u5982\u679c\u662f\u8fd0\u884c\u4e2d\u3001\u6216\u8005\u72b6\u6001\u5927\u4e8e\u7b49\u4e8eTIDYING\u6216\u8005shutdown\u4f46\u662f\u961f\u5217\u4e0d\u4e3a\u7a7a\u90fd\n\/\/\u76f4\u63a5\u8fd4\u56de\uff0c\u5982\u679c\u4e0d\u6ee1\u8db3\u4ee5\u4e0a\u6761\u4ef6\uff0c\u5e76\u4e14\u7ebf\u7a0b\u6570\u4e0d\u4e3a0\u7684\u8bdd\uff0c\u6253\u65ad\u4e00\u4e2a\u7a7a\u95f2\u7ebf\u7a0b\nfinal\u00a0void tryTerminate() {\n\u00a0 \u00a0\u00a0for\u00a0(;;) {\n\u00a0 \u00a0 \u00a0 \u00a0 int c = ctl.get();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(isRunning(c) ||\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 runStateAtLeast(c, TIDYING) ||\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (runStateOf(c) == SHUTDOWN &amp;&amp; ! workQueue.isEmpty()))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(workerCountOf(c) !=\u00a00) {\u00a0\/\/ Eligible to terminate\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 interruptIdleWorkers(ONLY_ONE);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\n\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u6b64\u65f6\u5230\u8fd9\u91cc\uff0c\u72b6\u6001\u8981\u4e48\u4e3aSTOP\u3002\u8981\u4e48\u662fshutdown\u5e76\u4e14\u961f\u5217\u4e3a\u7a7a\u4e86\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u83b7\u53d6\u4e00\u4e2a\u9501\uff0c\u5c1d\u8bd5cas\u4fee\u6539\u72b6\u6001\u4e3aTIDYING\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u8c03\u7528terminated()\u7684\u94a9\u5b50\u65b9\u6cd5\uff0c\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u4fee\u6539\u7ebf\u7a0b\u6c60\u4e3a\u7ec8\u6001TERMINATED\uff0c\u5e76\u4e14\u5524\u9192\u963b\u585e\u5728termination\u961f\u5217\u4e0a\u7684\u7ebf\u7a0b\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0final\u00a0ReentrantLock mainLock =\u00a0this.mainLock;\n\u00a0 \u00a0 \u00a0 \u00a0 mainLock.lock();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(ctl.compareAndSet(c, ctlOf(TIDYING,\u00a00))) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 terminated();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ctl.set(ctlOf(TERMINATED,\u00a00));\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 termination.signalAll();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mainLock.unlock();\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ else retry on failed CAS\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<h2>\u56db\u3001JDK\u5185\u7f6e\u7ebf\u7a0b\u6c60\u7684\u95ee\u9898<\/h2>\n<p>java.util.concurrent.Executors\u5de5\u5382\u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9759\u6001\u65b9\u6cd5\uff0c\u65b9\u4fbf\u6211\u4eec\u5feb\u901f\u521b\u5efa\u51e0\u79cd\u9884\u8bbe\u914d\u7f6e\u7684\u7ebf\u7a0b\u6c60\uff1a<\/p>\n<ul>\n<li>Executors.newFixedThreadPool(int nThreads)\uff1a<\/li>\n<li>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u7ebf\u7a0b\u6c60\u3002corePoolSize\u548cmaximumPoolSize\u90fd\u7b49\u4e8enThreads\u3002<\/li>\n<li>keepAliveTime\u4e3a0L\uff08\u56e0\u4e3a\u7ebf\u7a0b\u6570\u4e0d\u4f1a\u8d85\u8fc7corePoolSize\uff0c\u6240\u4ee5\u6b64\u53c2\u6570\u65e0\u6548\uff0c\u9664\u975eallowCoreThreadTimeOut\u4e3atrue\uff09\u3002<\/li>\n<li>\u4f7f\u7528\u65e0\u754c\u7684LinkedBlockingQueue\u4f5c\u4e3a\u5de5\u4f5c\u961f\u5217\u3002<\/li>\n<li><strong>\u95ee\u9898<\/strong>\uff1a\u7531\u4e8e\u4f7f\u7528\u65e0\u754c\u961f\u5217\uff0c\u5f53\u4efb\u52a1\u63d0\u4ea4\u901f\u5ea6\u8fdc\u5927\u4e8e\u5904\u7406\u901f\u5ea6\u65f6\uff0c\u961f\u5217\u4f1a\u6301\u7eed\u589e\u957f\uff0c\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\uff08OOM\uff09\u3002\u6b64\u65f6maximumPoolSize\u53c2\u6570\u5b9e\u9645\u4e0a\u662f\u65e0\u6548\u7684\uff0c\u7ebf\u7a0b\u6570\u6c38\u8fdc\u4e0d\u4f1a\u8d85\u8fc7nThreads\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li>Executors.newSingleThreadExecutor()\uff1a<\/li>\n<li>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u53ea\u6709\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u7684\u7ebf\u7a0b\u6c60\u3002corePoolSize\u548cmaximumPoolSize\u90fd\u4e3a1\u3002<\/li>\n<li>\u540c\u6837\u4f7f\u7528<strong>\u65e0\u754c<\/strong>\u7684LinkedBlockingQueue\u3002<\/li>\n<li>\u4fdd\u8bc1\u6240\u6709\u4efb\u52a1\u6309\u7167\u63d0\u4ea4\u987a\u5e8f\uff08FIFO\uff09\u6267\u884c\u3002<\/li>\n<li><strong>\u95ee\u9898<\/strong>\uff1a\u4e0enewFixedThreadPool\u7c7b\u4f3c\uff0c\u65e0\u754c\u961f\u5217\u53ef\u80fd\u5bfc\u81f4OOM\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li>Executors.newCachedThreadPool()\uff1a<\/li>\n<li>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u53ef\u7f13\u5b58\u7684\u7ebf\u7a0b\u6c60\u3002<\/li>\n<li>corePoolSize\u4e3a0\u3002<\/li>\n<li>maximumPoolSize\u4e3aInteger.MAX\/_VALUE (\u51e0\u4e4e\u662f\u65e0\u754c\u7684)\u3002<\/li>\n<li>keepAliveTime\u4e3a60\u79d2\u3002<\/li>\n<li>\u4f7f\u7528SynchronousQueue\u4f5c\u4e3a\u5de5\u4f5c\u961f\u5217\u3002\u8fd9\u79cd\u961f\u5217\u4e0d\u5b58\u50a8\u5143\u7d20\uff0c\u4efb\u52a1\u63d0\u4ea4\u540e\u5fc5\u987b\u6709\u7a7a\u95f2\u7ebf\u7a0b\u7acb\u5373\u63a5\u6536\uff0c\u5426\u5219\u4f1a\u521b\u5efa\u65b0\u7ebf\u7a0b\uff08\u5982\u679c\u672a\u8fbe\u5230maximumPoolSize\uff09\u3002<\/li>\n<li><strong>\u95ee\u9898<\/strong>\uff1a\u5982\u679c\u4efb\u52a1\u63d0\u4ea4\u901f\u5ea6\u8fc7\u5feb\uff0c\u4f1a\u521b\u5efa\u5927\u91cf\u7ebf\u7a0b\uff08\u7406\u8bba\u4e0a\u53ef\u8fbeInteger.MAX\/_VALUE\u4e2a\uff09\uff0c\u53ef\u80fd\u8017\u5c3d\u7cfb\u7edf\u8d44\u6e90\uff0c\u5bfc\u81f4OOM\u4ee5\u53ca\u9891\u7e41\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li>Executors.newSingleThreadScheduledExecutor()\u3001Executors.newScheduledThreadPool(int corePoolSize):<\/li>\n<li>\n<ul>\n<li>\u521b\u5efa\u7528\u4e8e\u8c03\u5ea6\u4efb\u52a1\u7684\u7ebf\u7a0b\u6c60\u3002<\/li>\n<li>\u5185\u90e8\u4f7f\u7528ScheduledThreadPoolExecutor\u5b9e\u73b0\uff0c\u5176\u4efb\u52a1\u961f\u5217\u662fDelayedWorkQueue (\u4e00\u79cd\u7279\u6b8a\u7684PriorityQueue)\u3002<\/li>\n<li>newSingleThreadScheduledExecutor\u7684corePoolSize\u4e3a1\uff0cmaximumPoolSize\u4e3aInteger.MAX\/_VALUE\uff08\u4f46\u7531\u4e8e\u961f\u5217\u662fDelayedWorkQueue\uff0c\u901a\u5e38\u4e0d\u4f1a\u65e0\u9650\u589e\u957f\u7ebf\u7a0b\uff0c\u9664\u975e\u6709\u5927\u91cf\u540c\u65f6\u5230\u671f\u7684\u4efb\u52a1\u4e14\u5904\u7406\u4e0d\u8fc7\u6765\uff09\u3002<\/li>\n<li>newScheduledThreadPool\u53ef\u4ee5\u6307\u5b9acorePoolSize\u3002<\/li>\n<li><strong>\u95ee\u9898<\/strong>\uff1a\u867d\u7136DelayedWorkQueue\u672c\u8eab\u662f\u65e0\u754c\u7684\uff0c\u4f46ScheduledThreadPoolExecutor\u5728\u4efb\u52a1\u6267\u884c\u903b\u8f91\u4e0a\u4e0e\u666e\u901aThreadPoolExecutor\u6709\u6240\u4e0d\u540c\u3002\u4e3b\u8981\u98ce\u9669\u4ecd\u7136\u662f\u5982\u679ccorePoolSize\u8bbe\u7f6e\u4e0d\u5f53\uff0c\u4e14\u5927\u91cf\u4efb\u52a1\u540c\u65f6\u5230\u671f\u5e76\u6267\u884c\u7f13\u6162\uff0c\u53ef\u80fd\u5bfc\u81f4\u4efb\u52a1\u79ef\u538b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>!<img decoding=\"async\" width=\"723\" height=\"323\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVdmIcL\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<p>\u67d0\u4e00\u7ebf\u4e92\u8054\u7f51Java\u5f00\u53d1\u624b\u518c<\/p>\n<h2>\u4e94\u3001\u7ebf\u7a0b\u6c60\u4e2d\u7684\u95ee\u9898\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n<h2>5.1 invokeAll \u8d85\u65f6\u673a\u5236\u65e0\u6548\uff1f<\/h2>\n<p>ExecutorService.invokeAll(Collection\/&lt;? extends Callable&lt;T&gt;&gt; tasks, long timeout, TimeUnit unit)\u65b9\u6cd5\u4f1a\u63d0\u4ea4\u4e00\u7ec4Callable\u4efb\u52a1\uff0c\u5e76\u7b49\u5f85\u6240\u6709\u4efb\u52a1\u5b8c\u6210\uff0c\u6216\u8005\u76f4\u5230\u8d85\u65f6\u3002\u5982\u679c\u8d85\u65f6\u53d1\u751f\uff0c\u5b83\u4f1a\u5c1d\u8bd5\u53d6\u6d88\uff08\u4e2d\u65ad\uff09\u6240\u6709\u5c1a\u672a\u5b8c\u6210\u7684\u4efb\u52a1\uff0c\u7136\u540e\u8fd4\u56de\u4e00\u4e2aList&lt;Future&gt;\u3002<\/p>\n<p><strong>\u5931\u6548\u573a\u666f\u5206\u6790\uff1a<\/strong><\/p>\n<ul>\n<li>\u4efb\u52a1\u4e0d\u54cd\u5e94\u4e2d\u65ad\uff08\u6700\u5e38\u89c1\uff09\uff1a\u4efb\u52a1\u5185\u90e8\u6355\u83b7\u00a0InterruptedException\u00a0\u540e\u9759\u9ed8\u5904\u7406\uff0c\u6216\u6267\u884c\u4e0d\u68c0\u67e5\u4e2d\u65ad\u72b6\u6001\u7684\u963b\u585e\u64cd\u4f5c\uff08\u5982\u5faa\u73af\u8ba1\u7b97\uff09\uff1a<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<pre><code>Callable&lt;String&gt; task = () -&gt; {\n\u00a0 \u00a0\u00a0while\u00a0(true) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u7f3a\u5c11\u6b64\u68c0\u67e5\u5c06\u5bfc\u81f4\u8d85\u65f6\u5931\u6548\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(Thread.interrupted())\u00a0break;\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u8017\u65f6\u8ba1\u7b97...\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0return\u00a0&quot;done&quot;;\n};\n<\/code><\/pre>\n<ul>\n<li><strong>\u4f7f\u7528\u975e\u54cd\u5e94\u4e2d\u65ad\u7684API<\/strong>\uff1a\u4efb\u52a1\u8c03\u7528\u4e86\u4e0d\u54cd\u5e94\u00a0interrupt()\u00a0\u7684\u7b2c\u4e09\u65b9\u5e93\u6216JNI\u4ee3\u7801\uff08\u5982\u67d0\u4e9bIO\u64cd\u4f5c\uff09<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<pre><code>Callable&lt;Integer&gt; task\u00a0=\u00a0() -&gt; {\n\u00a0 \u00a0\u00a0Files.copy(in, path);\u00a0\/\/ \u67d0\u4e9bNIO\u64cd\u4f5c\u4e0d\u54cd\u5e94\u4e2d\u65ad\n\u00a0 \u00a0\u00a0return\u00a01;\n};\n<\/code><\/pre>\n<ul>\n<li><strong>\u4efb\u52a1\u4f9d\u8d56\u5916\u90e8\u8d44\u6e90\u963b\u585e<\/strong>\uff1a\u4efb\u52a1\u56e0\u5916\u90e8\u8d44\u6e90\uff08\u5982\u6570\u636e\u5e93\u8fde\u63a5\u3001\u7f51\u7edc\u8bf7\u6c42\uff09\u963b\u585e\u4e14\u672a\u8bbe\u7f6e\u8d85\u65f6\u3002<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<pre><code>Callable&lt;Result&gt; task\u00a0=\u00a0() -&gt; {\n\u00a0 \u00a0\u00a0\/\/\u672a\u8bbe\u67e5\u8be2\u8d85\u65f6\u65f6\u95f4\n\u00a0 \u00a0\u00a0return\u00a0jdbcTemplate.query(&quot;SELECT * FROM large_table&quot;);\u00a0\n};\n<\/code><\/pre>\n<ul>\n<li><strong>\u7ebf\u7a0b\u6c60\u914d\u7f6e\u7f3a\u9677<\/strong>\uff1a\u6838\u5fc3\u7ebf\u7a0b\u6570\u8fc7\u5927\u6216\u961f\u5217\u65e0\u754c\uff0c\u5bfc\u81f4\u00a0invokeAll\u00a0\u8d85\u65f6\u524d\u4efb\u52a1\u65e0\u6cd5\u5168\u90e8\u542f\u52a8\uff0c\u4efb\u52a1\u5806\u79ef\u5728\u961f\u5217\uff0cinvokeAll\u00a0\u8d85\u65f6\u540e\u4ecd\u6709\u5927\u91cf\u4efb\u52a1\u672a\u6267\u884c\u3002<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<pre><code>new\u00a0ThreadPoolExecutor(\n\u00a0 \u00a0\u00a0100,\u00a0100,\u00a0\/\/ \u6838\u5fc3\u7ebf\u7a0b\u6570\u8fc7\u5927\n\u00a0 \u00a0 0L,\u00a0TimeUnit.MILLISECONDS,\n\u00a0 \u00a0\u00a0new\u00a0LinkedBlockingQueue&lt;&gt;()\u00a0\/\/ \u65e0\u754c\u961f\u5217\n);\n<\/code><\/pre>\n<p><strong>invokeAll\u8d85\u65f6\u5931\u6548demo:<\/strong><\/p>\n<pre><code>import\u00a0java.util.*;\nimport\u00a0java.util.concurrent.*;\n\n\npublic\u00a0class\u00a0InvokeAllTimeoutDemo\u00a0{\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0\/\/ \u6a21\u62df\u8017\u65f6\u4efb\u52a1\uff08\u53ef\u914d\u7f6e\u662f\u5426\u54cd\u5e94\u4e2d\u65ad\uff09\n\u00a0 \u00a0\u00a0static\u00a0class\u00a0Task\u00a0implements\u00a0Callable&lt;String&gt; {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0private\u00a0final\u00a0int\u00a0id;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0private\u00a0final\u00a0long\u00a0durationMs;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0private\u00a0final\u00a0boolean\u00a0respectInterrupt;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 Task(int\u00a0id,\u00a0long\u00a0durationMs,\u00a0boolean\u00a0respectInterrupt) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0this.id = id;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0this.durationMs = durationMs;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0this.respectInterrupt = respectInterrupt;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0@Override\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0public\u00a0String\u00a0call()\u00a0throws\u00a0Exception {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.printf(&quot;Task %d started%n&quot;, id);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0long\u00a0start\u00a0=\u00a0System.currentTimeMillis();\n\n\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u6a21\u62df\u5de5\u4f5c\uff08\u68c0\u67e5\u4e2d\u65ad\u72b6\u6001\uff09\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0while\u00a0(System.currentTimeMillis() - start &lt; durationMs) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(respectInterrupt &amp;&amp; Thread.interrupted()) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0InterruptedException(&quot;Task &quot;\u00a0+ id +\u00a0&quot; interrupted&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u4e0d\u54cd\u5e94\u4e2d\u65ad\u7684\u4efb\u52a1\u4f1a\u7ee7\u7eed\u6267\u884c\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\n\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.printf(&quot;Task %d completed%n&quot;, id);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0&quot;Result-&quot;\u00a0+ id;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0public\u00a0static\u00a0void\u00a0main(String[] args)\u00a0throws\u00a0InterruptedException {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0ExecutorService\u00a0executor\u00a0=\u00a0Executors.newFixedThreadPool(2);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 List&lt;Callable&lt;String&gt;&gt; tasks = Arrays.asList(\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0new\u00a0Task(1,\u00a02000,\u00a0true), \u00a0\u00a0\/\/ 2\u79d2\uff0c\u54cd\u5e94\u4e2d\u65ad\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0new\u00a0Task(2,\u00a010000,\u00a0false) \u00a0\/\/ 10\u79d2\uff0c\u4e0d\u54cd\u5e94\u4e2d\u65ad\n\u00a0 \u00a0 \u00a0 \u00a0 );\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;Invoking with 3s timeout...&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u8bbe\u7f6e3\u79d2\u8d85\u65f6\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 List&lt;Future&lt;String&gt;&gt; futures = executor.invokeAll(tasks,\u00a03, TimeUnit.SECONDS);\n\n\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0for\u00a0(Future&lt;String&gt; f : futures) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u660e\u786e\u5904\u7406\u53d6\u6d88\u72b6\u6001\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(f.isCancelled()) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;Task was cancelled&quot;); \u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0else\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;Result: &quot;\u00a0+ f.get(100, TimeUnit.MILLISECONDS));\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(TimeoutException | ExecutionException e) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;Task failed: &quot;\u00a0+ e.getCause());\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 executor.shutdownNow();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;Executor shutdown&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<p>\u5f53\u6211\u4eec\u4f7f\u7528invokeAll(tasks, timeout)\u00a0\u63d0\u4ea4\u591a\u4e2a\u4efb\u52a1\u65f6\uff0c\u5982\u679c\u51fa\u73b0\u67d0\u4e2a\u4efb\u52a1\u5bf9\u4e2d\u65ad\u4e0d\u54cd\u5e94\u6216\u8005\u54cd\u5e94\u4e0d\u53ca\u65f6\uff0c\u90a3\u6211\u4eec\u5373\u4f7f\u8bbe\u7f6e\u4e86\u8d85\u65f6\u65f6\u95f4\uff0c\u4e0d\u54cd\u5e94\u4e2d\u65ad\u7684\u4efb\u52a12\u4ecd\u5728\u540e\u53f0\u8fd0\u884c\uff08\u5373\u4f7f\u8c03\u7528\u4e86\u00a0shutdownNow()\uff09<\/p>\n<h2>5.2 submit()\u7684\u5f02\u5e38\u6d88\u5931\u4e86\uff1f<\/h2>\n<p>\u4f7f\u7528ExecutorService.submit()\u63d0\u4ea4\u4efb\u52a1\u65f6\uff0c\u4efb\u52a1\u6267\u884c\u8fc7\u7a0b\u4e2d\u5982\u679c\u629b\u51fa\u672a\u6355\u83b7\u7684\u5f02\u5e38\uff08\u65e0\u8bba\u662f\u53d7\u68c0\u5f02\u5e38\u8fd8\u662f\u8fd0\u884c\u65f6\u5f02\u5e38\uff09\uff0c\u8fd9\u4e2a\u5f02\u5e38\u4f1a\u88abFuture\u7684\u5305\u88c5\u7c7b\u5982FutureTask\u91cd\u5199\u7684run()\u65b9\u6cd5\u6355\u83b7\u5e76\u5c01\u88c5\u5728\u8fd4\u56de\u7684Future\u5305\u88c5\u5bf9\u8c61\u7684\u6210\u5458\u53d8\u91cf\u4e2d\u3002<\/p>\n<ul>\n<li><strong>\u4e0d\u663e\u793a\u8c03\u7528<\/strong>Future.get()\uff0c\u8be5\u5f02\u5e38\u6211\u4eec\u5c31\u65e0\u6cd5\u611f\u77e5\uff0c\u597d\u50cf\u6ca1\u6709\u53d1\u751f\u8fc7\u4e00\u6837\u3002\u7ebf\u7a0b\u6c60\u7684\u5de5\u4f5c\u7ebf\u7a0b\u672c\u8eab\u901a\u5e38\u4f1a\u6709\u4e00\u4e2a\u9ed8\u8ba4\u7684\u672a\u6355\u83b7\u5f02\u5e38\u5904\u7406\u5668\uff0c\u53ef\u80fd\u4f1a\u6253\u5370\u5806\u6808\u5230\u63a7\u5236\u53f0\uff0c\u4f46\u4f60\u7684\u4e3b\u4e1a\u52a1\u903b\u8f91\u4e0d\u4f1a\u77e5\u9053\u3002<\/li>\n<li><strong>\u663e\u793a\u8c03\u7528<\/strong>Future.get()\uff0c\u629b\u51fa\u58f0\u660e\u5f0f\u7684ExecutionException\uff0c\u5176cause\u5c5e\u6027\u624d\u662f\u539f\u59cb\u7684\u4efb\u52a1\u5f02\u5e38\u3002<\/li>\n<li>\u5982\u679c\u8c03\u7528Future.get(long timeout, TimeUnit unit)\u8d85\u65f6\uff0c\u5411\u5916\u629b\u51fa\u58f0\u660e\u5f0f\u7684TimeoutException\u3002\u6b64\u65f6\u4efb\u52a1\u53ef\u80fd\u4ecd\u5728\u540e\u53f0\u6267\u884c\uff0c\u53ef\u80fd\u9519\u8fc7\u4e86\u5185\u90e8\u7684\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<p><strong>submit()\u5f02\u5e38\u6d88\u5931demo:<\/strong><\/p>\n<pre><code>public\u00a0class\u00a0ThreadPoolExceptionDemo\u00a0{\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0public\u00a0static\u00a0void\u00a0main(String[] args)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u521b\u5efa\u5355\u7ebf\u7a0b\u7ebf\u7a0b\u6c60\uff08\u4fbf\u4e8e\u89c2\u5bdf\u5f02\u5e38\uff09\n\u00a0 \u00a0 \u00a0 \u00a0 ExecutorService executor = Executors.newSingleThreadExecutor();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u573a\u666f1\uff1aCallable\u629b\u51fa\u5f02\u5e38\uff08\u901a\u8fc7Future.get()\u6355\u83b7\uff09\n\u00a0 \u00a0 \u00a0 \u00a0 Future&lt;String&gt; future1 = executor.submit(() -&gt; {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;[Callable] \u5f00\u59cb\u6267\u884c&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Thread.sleep(100);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0RuntimeException(&quot;Callable\u6545\u610f\u629b\u51fa\u7684\u5f02\u5e38&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 });\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;Callable\u7ed3\u679c: &quot;\u00a0+ future1.get());\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(ExecutionException e) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.err.println(&quot;\u6355\u83b7\u5230Callable\u5f02\u5e38: &quot;\u00a0+ e.getCause().getMessage());\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(InterruptedException e) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Thread.currentThread().interrupt();\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u573a\u666f2\uff1aRunnable\u629b\u51fa\u5f02\u5e38\uff08\u540c\u6837\u901a\u8fc7Future.get()\u6355\u83b7\uff09\n\u00a0 \u00a0 \u00a0 \u00a0 Future&lt;?&gt; future2 = executor.submit(() -&gt; {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;[Runnable] \u5f00\u59cb\u6267\u884c&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0IllegalArgumentException(&quot;Runnable\u6545\u610f\u629b\u51fa\u7684\u5f02\u5e38&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 });\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 future2.get();\u00a0\/\/ Runnable\u6210\u529f\u65f6\u8fd4\u56denull\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(ExecutionException e) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.err.println(&quot;\u6355\u83b7\u5230Runnable\u5f02\u5e38: &quot;\u00a0+ e.getCause().getMessage());\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(InterruptedException e) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Thread.currentThread().interrupt();\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u573a\u666f3\uff1a\u672a\u5904\u7406\u7684\u4efb\u52a1\u5f02\u5e38\uff08\u9700\u8bbe\u7f6e\u5f02\u5e38\u5904\u7406\u5668\uff09\n\u00a0 \u00a0 \u00a0 \u00a0 executor.submit(() -&gt; {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.out.println(&quot;[\u672a\u6355\u83b7\u7684\u4efb\u52a1] \u5f00\u59cb\u6267\u884c&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0IllegalStateException(&quot;\u8fd9\u4e2a\u5f02\u5e38\u4f1a\u88ab\u9ed8\u8ba4\u5904\u7406\u5668\u5904\u7406&quot;);\n\u00a0 \u00a0 \u00a0 \u00a0 });\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 executor.shutdown();\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<h2>5.3 \u5f02\u5e38\u5904\u7406\u5b9e\u8df5<\/h2>\n<p><img decoding=\"async\" width=\"723\" height=\"558\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/bVdmIcK\" alt=\"image.png\" title=\"image.png\" loading=\"lazy\"><\/p>\n<ul>\n<li><strong>Callable\/Runnable catch\u5904\u7406\u5f02\u5e38\uff1a<\/strong><\/li>\n<li>\n<ul>\n<li><strong>\u4e0d\u8981\u6355\u83b7Throwable\u6216Exception\u7136\u540e\u9759\u9ed8\u5904\u7406\uff08\u53ea\u6253\u65e5\u5fd7\uff09<\/strong> \u3002\u5982\u679c\u786e\u5b9e\u9700\u8981\u6355\u83b7\uff0c\u8bf7\u8003\u8651\u662f\u5426\u5e94\u8be5\u91cd\u65b0\u629b\u51fa\uff08\u5305\u88c5\u6210\u4e1a\u52a1\u5141\u8bb8\u7684\u53d7\u68c0\u5f02\u5e38\u6216\u8fd0\u884c\u65f6\u5f02\u5e38\uff09\u3002<\/li>\n<li><strong>\u7981\u6b62\u9759\u9ed8\u5904\u7406<\/strong> InterruptedException\uff1a<\/li>\n<li>\u5728JDK\u7684JUC\u5e95\u5c42\u6e90\u7801\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5f88\u591a\u58f0\u660e\u4e86InterruptedException\u7684\u65b9\u6cd5\uff0c\u57fa\u672c\u4e0a\u90fd\u662f\u5bf9\u8fd9\u7c7b\u65b9\u6cd5catch\u5f02\u5e38\uff0c\u8981\u4e48\u7ee7\u7eed\u5f80\u5916\u629b\u51fa\uff0c\u6216\u8005\u5904\u7406\u5b8c\u76f8\u5173\u8d44\u6e90\u540e\uff0c\u91cd\u7f6e\u4e2d\u65ad\u72b6\u6001\uff0c<strong>\u7edd\u5bf9\u4e0d\u8981\u9759\u9ed8\u5904\u7406\u3002<\/strong><\/li>\n<li>\u5982\u679c\u65b9\u6cd5\u6ca1\u6709\u58f0\u660eInterruptedException\u5982Runnable.run()\uff0c\u5728catch\u00a0InterruptedException\u540e\u6700\u597d\u8c03\u7528Thread.currentThread().interrupt()\u6765\u6062\u590d\u4e2d\u65ad\u6807\u8bb0\u3002<\/li>\n<li><strong>\u6b63\u786e\u5904\u7406\u4e2d\u65ad<\/strong>\uff1acallable\u5728\u8017\u65f6\u7684loop\u4efb\u52a1\u5904\u7406\u4e2d\uff0c\u5982\u679c\u51fa\u73b0\u4e86\u4e2d\u65ad\u5f02\u5e38\uff0c\u56e0\u4e3aJava\u4ee3\u7801\u4e2d\u4e2d\u65ad\u53ea\u662f\u4e00\u79cd\u534f\u4f5c\u65b9\u5f0f\uff0c\u5176\u5e76\u6ca1\u771f\u7684\u7ec8\u6b62\u7ebf\u7a0b\uff0c\u6240\u4ee5\u4e00\u822c\u90fd\u662f\u9700\u8981\u6211\u4eec\u8fdb\u884c\u4e00\u4e2a\u4e2d\u65ad\u6807\u5fd7\u7684\u4f20\u9012\uff0c\u5982\u7ebf\u7a0b\u6c60\u4e2d\u7684shutdownNow()\u5c31\u4f9d\u8d56\u6b21\u673a\u5236\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li><strong>submit()\u6267\u884c\u7684\u4efb\u52a1\uff0c\u8c28\u614e\u5904\u7406Future\uff1a<\/strong><\/li>\n<li>\n<ul>\n<li>\u4f7f\u7528\u5e26\u8fc7\u671f\u65f6\u95f4\u7684future.get(long timeOut)\u83b7\u53d6\u7ed3\u679c\uff0c\u5e76\u8981\u5bf9\u8be5\u65b9\u6cd5\u8fdb\u884ctry cache\u9632\u6b62\u5176\u4ed6\u5f02\u5e38\u629b\u51fa\u3002<\/li>\n<li>\u591a\u4e2a\u4efb\u52a1\u5e76\u884c\u5904\u7406\u65f6\uff0c\u5982\u679c\u6709\u4e0b\u4e2a\u8bf7\u6c42\u4f9d\u8d56\u4e0a\u4e2a\u8bf7\u6c42\uff0c\u52a1\u5fc5\u4f7f\u7528get()\u8ba9\u4e3b\u7ebf\u7a0b\u7b49\u5f85\u8fd9\u4e00\u7ed3\u679c\u6267\u884c\u5b8c\u6210\u540e\uff0c\u6d41\u8f6c\u5230\u4e0b\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li><strong>\u5b9e\u73b0\u7ebf\u7a0bThread\u7684UncaughtExceptionHandler\u5c5e\u6027<\/strong>\uff0c\u5728\u81ea\u5b9a\u4e49\u7684TheadFactory\u4e2d\u901a\u8fc7set\u65b9\u6cd5\u8d4b\u503c\uff1aexecute()\u65b9\u6cd5\u6267\u884c\u65f6\uff0c\u5bf9\u4e8e\u6ca1\u6709\u6355\u83b7\u7684\u5f02\u5e38\u4f7f\u7528\u7ebf\u7a0b\u7ec4\u7684\u515c\u5e95\u7edf\u4e00\u5904\u7406\u673a\u5236\u3002<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<pre><code>\/\/\u81ea\u5b9a\u4e49\u5f53\u524d\u7ebf\u7a0b\u7ec4\u521b\u5efa\u7ebf\u7a0b\u7684\u7edf\u4e00\u5f02\u5e38\u5904\u7406\uff0c\u7c7b\u4f3c\u4e8econtroller\u7684\u7edf\u4e00\u5f02\u5e38\u5904\u7406\u673a\u5236\nThreadFactory\u00a0myThreadFactory\u00a0=\u00a0new\u00a0ThreadFactory() {\n\u00a0 \u00a0\u00a0private\u00a0final\u00a0AtomicInteger\u00a0atomicInteger\u00a0=\u00a0new\u00a0AtomicInteger(0);\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0private\u00a0final\u00a0String\u00a0threadNamePrefix\u00a0=\u00a0&quot;myThreadFactory-&quot;;\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0@Override\n\u00a0 \u00a0\u00a0public\u00a0Thread\u00a0newThread(Runnable r)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0Thread\u00a0t\u00a0=\u00a0\u00a0new\u00a0Thread(r,threadNamePrefix + atomicInteger.getAndIncrement());\n\u00a0 \u00a0 \u00a0 \u00a0 t.setUncaughtExceptionHandler((thread, throwable) -&gt; {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/\u5f02\u5e38\u7684\u7edf\u4e00\u5904\u7406\uff0c\u65e5\u5fd7\u6253\u5370\u3001\u515c\u5e95\u5904\u7406\u3001\u76d1\u63a7\u3001\u8d44\u6e90\u91ca\u653e\u7b49\n\u00a0 \u00a0 \u00a0 \u00a0 System.err.println(&quot;\u7ebf\u7a0b[&quot;\u00a0+ thread.getName() +\u00a0&quot;]\u5f02\u5e38: &quot;\u00a0+ throwable);});\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0t;\n\u00a0 \u00a0 }\n};\n\n\n\/\/\u6784\u9020\u65b9\u6cd5\u65f6\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684\u7ebf\u7a0b\u5de5\u5382\nExecutorService\u00a0executor\u00a0=\u00a0new\u00a0ThreadPoolExecutor(\n\u00a0 \u00a0 corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue,\n\u00a0 \u00a0 threadFactory,\n\u00a0 \u00a0 handler\n);\n<\/code><\/pre>\n<ul>\n<li><strong>\u4f7f\u7528\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60\u65f6\u5efa\u8bae\u91cd\u5199\u94a9\u5b50\u65b9\u6cd5afterExecute(Runnable r, Throwable t)<\/strong> \uff1a\u8fd9\u4e2ahook\u65b9\u6cd5\u662f\u7528\u6765\u89e3\u51b3\u5f53\u524d\u4efb\u52a1\u7ebf\u7a0b\u53d1\u751f\u7684\u5f02\u5e38\uff0c\u9ed8\u8ba4\u662f\u7a7a\u5b9e\u73b0\uff0c\u6211\u4eec\u53ef\u4ee5\u91cd\u5199\u4ed6\uff0c\u6bd4\u5982\u8fdb\u884c\u515c\u5e95\u7684\u7ebf\u7a0b\u7ee7\u7eed\u6267\u884c\uff0c\u6253\u5370\u65e5\u5fd7\u8bb0\u5f55\uff0c\u4ee5\u53ca\u540c\u6b65\u5931\u8d25\u4f7f\u7528\u515c\u5e95\u5f02\u6b65\u5904\u7406\u7b49\u7b49\u65b9\u5f0f\u3002\u8fd8\u8981\u6ce8\u610f\u91ca\u653e\u5e94\u7528\u4e2d\u7684\u8d44\u6e90\uff0c\u6bd4\u5982\u6587\u4ef6\u9501\u7684\u5360\u7528\u7b49\uff0c\u6700\u597d\u624b\u52a8\u91ca\u653e\u6389\uff0c\u907f\u514d\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u7ebf\u7a0b\u5bf9\u8fd9\u7c7b\u8d44\u6e90\u91ca\u653e\u5931\u8d25\u5bfc\u81f4\u957f\u671f\u5360\u7528\uff0c\u6700\u540e\u53ea\u80fd\u91cd\u542fJava\u8fdb\u7a0b\u7684\u5c34\u5c2c\u5730\u6b65\u3002<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<pre><code>public\u00a0class\u00a0MyThreadPoolExecutor\u00a0extends\u00a0ThreadPoolExecutor\u00a0{\n\u00a0 \u00a0\u00a0public\u00a0MyThreadPoolExecutor(int\u00a0corePoolSize,\u00a0int\u00a0maximumPoolSize,\u00a0long\u00a0keepAliveTime, TimeUnit unit, BlockingQueue&lt;Runnable&gt; workQueue)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0@Override\n\u00a0 \u00a0\u00a0protected\u00a0void\u00a0afterExecute(Runnable r, Throwable t)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\/\/\u9700\u8981\u7279\u522b\u6ce8\u610f\u4efb\u52a1\u662f\u5426\u4e3asubmit\u63d0\u4ea4\uff0c\u5982\u679c\u662fexecute\u63d0\u4ea4\u7684\u4efb\u52a1\uff0c\u90a3\u8fd9\u91cc\u5f88\u76f4\u63a5\u7684\u77e5\u9053\u4efb\u52a1\u662f\u5426\u53d1\u751f\u5f02\u5e38\u4ee5\u53ca\u540e\u7eed\u53bb\u600e\u4e48\u5904\u7406\n\u00a0 \u00a0 \u00a0 \u00a0if(r\u00a0instanceof\u00a0Future){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if(((Future&lt;?&gt;) r).isDone() || ((Future&lt;?&gt;) r).isCancelled()){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u7ee7\u7eed\u4f7f\u7528\u4e3b\u7ebf\u7a0b\u5b8c\u6210\u4efb\u52a1,\u4e00\u822c\u4e0d\u5efa\u8bae\uff0c\u6700\u597d\u4f7f\u7528\u515c\u5e95\u65b9\u5f0f\uff1a\u4f8b\u5982\u5f02\u6b65\u53d1\u6d88\u606f\uff0c\u7531\u540e\u7eed\u7684\u6d88\u8d39\u7ec4\u7edf\u4e00\u5904\u7406\u5f02\u5e38\u7684\u4efb\u52a1\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0}\n\u00a0 \u00a0 \u00a0 \u00a0}else\u00a0if( t !=\u00a0null){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/execute\u5f02\u5e38\u5904\u7406\n\u00a0 \u00a0 \u00a0 \u00a0}\n\u00a0 \u00a0 }\n}\n\n\n\/\/FutureTask \u628arun\u65b9\u6cd5\u8fdb\u884c\u4e86\u91cd\u5199\uff0c\u5e76\u4e14catch\u4f4f\u4e86\u5f02\u5e38\uff0c\u6240\u4ee5\u8bf4afterExecute\u7684t \u5982\u679c\u662fsubmit\u63d0\u4ea4\u7684\u65b9\u5f0f\n\/\/\u90a3\u4e48t\u57fa\u672c\u4e0a\u5c31\u662fnull\npublic\u00a0void\u00a0run()\u00a0{\n\u00a0 \u00a0\u00a0\/\/....\n\u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 Callable&lt;V&gt; c = callable;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(c !=\u00a0null\u00a0&amp;&amp; state == NEW) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 V result;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0boolean\u00a0ran;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 result = c.call();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ran =\u00a0true;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(Throwable ex) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 result =\u00a0null;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ran =\u00a0false;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 setException(ex);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(ran)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 set(result);\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\u00a0finally\u00a0{\n\u00a0 \u00a0 \u00a0\/\/...\n}\n<\/code><\/pre>\n<p><strong>afterExecute\u53ef\u4ee5\u501f\u9274\u7684\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre><code>import\u00a0java.util.concurrent.*;\nimport\u00a0java.util.concurrent.atomic.*;\nimport\u00a0org.slf4j.*;\n\n\npublic\u00a0class\u00a0RobustThreadPool\u00a0extends\u00a0ThreadPoolExecutor\u00a0{\n\u00a0 \u00a0\u00a0private\u00a0static\u00a0final\u00a0Logger\u00a0logger\u00a0=\u00a0LoggerFactory.getLogger(RobustThreadPool.class);\n\u00a0 \u00a0\u00a0private\u00a0final\u00a0AtomicLong\u00a0failureCounter\u00a0=\u00a0new\u00a0AtomicLong();\n\u00a0 \u00a0\u00a0private\u00a0final\u00a0RetryPolicy retryPolicy;\u00a0\/\/ \u91cd\u8bd5\u7b56\u7565\n\u00a0 \u00a0\u00a0private\u00a0final\u00a0ThreadLocal&lt;Long&gt; startTime =\u00a0new\u00a0ThreadLocal&lt;&gt;();\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0public\u00a0RobustThreadPool(int\u00a0corePoolSize,\u00a0int\u00a0maxPoolSize,\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 BlockingQueue&lt;Runnable&gt; workQueue,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RetryPolicy retryPolicy) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0super(corePoolSize, maxPoolSize,\u00a060L, TimeUnit.SECONDS, workQueue);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0this.retryPolicy = retryPolicy;\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0@Override\n\u00a0 \u00a0\u00a0protected\u00a0void\u00a0beforeExecute(Thread t, Runnable r)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 logger.debug(&quot;\u5f00\u59cb\u6267\u884c\u4efb\u52a1: {}&quot;, r);\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0@Override\n\u00a0 \u00a0\u00a0protected\u00a0void\u00a0afterExecute(Runnable r, Throwable t)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 1. \u5f02\u5e38\u5206\u7c7b\u5904\u7406\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0if(r\u00a0instanceof\u00a0Future){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if(((Future&lt;?&gt;) r).isDone()){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u9519\u8bef\u8bb0\u5f55\u4ee5\u53ca\u5f02\u5e38\u5904\u7406\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 failureCounter.incrementAndGet();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 handleFailure(r, t, costTime);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0}\n\u00a0 \u00a0 \u00a0 \u00a0}else\u00a0if( t !=\u00a0null){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/execute\u5f02\u5e38\u5904\u7406\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 failureCounter.incrementAndGet();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 handleFailure(r, t, costTime);\n\u00a0 \u00a0 \u00a0 \u00a0}\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 2. \u8d44\u6e90\u6e05\u7406\n\u00a0 \u00a0 \u00a0 \u00a0 cleanThreadLocals();\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0private\u00a0void\u00a0handleFailure(Runnable r, Throwable t)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 1. \u5f02\u5e38\u7c7b\u578b\u8bc6\u522b\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(t\u00a0instanceof\u00a0OutOfMemoryError) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 logger.error(&quot;JVM\u5185\u5b58\u4e0d\u8db3\uff0c\u7ec8\u6b62\u4efb\u52a1: {}&quot;, t.getMessage());\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System.exit(1);\u00a0\/\/ \u4e25\u91cd\u9519\u8bef\u76f4\u63a5\u7ec8\u6b62\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 2. \u53ef\u91cd\u8bd5\u5f02\u5e38\u5904\u7406\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0else\u00a0if\u00a0(isRetryable(t)) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0retryCount\u00a0=\u00a0retryPolicy.getCurrentRetryCount(r);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(retryCount &lt; retryPolicy.getMaxRetries()) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 logger.warn(&quot;\u4efb\u52a1\u7b2c{}\u6b21\u5931\u8d25\uff0c\u51c6\u5907\u91cd\u8bd5...&quot;,\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 retryCount +\u00a01, t);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 retryPolicy.retry(r,\u00a0this);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0else\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 logger.error(&quot;\u4efb\u52a1\u8d85\u8fc7\u6700\u5927\u91cd\u8bd5\u6b21\u6570({})\uff0c\u8f6c\u5165\u6b7b\u4fe1\u961f\u5217&quot;,\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 retryPolicy.getMaxRetries(), t);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 DeadLetterQueue.add(r, t);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 3. \u4e0d\u53ef\u91cd\u8bd5\u5f02\u5e38\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0else\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 logger.error(&quot;\u4e0d\u53ef\u6062\u590d\u4efb\u52a1\u5931\u8d25&quot;, t);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Metrics.recordFailure(t.getClass());\u00a0\/\/ \u4e0a\u62a5\u76d1\u63a7\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0private\u00a0boolean\u00a0isRetryable(Throwable t)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0t\u00a0instanceof\u00a0IOException ||\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0t\u00a0instanceof\u00a0TimeoutException ||\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(t.getCause() !=\u00a0null\u00a0&amp;&amp; isRetryable(t.getCause()));\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0private\u00a0void\u00a0cleanThreadLocals()\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ \u6e05\u7406\u53ef\u80fd\u7684\u5185\u5b58\u6cc4\u6f0f\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ThreadLocal&lt;?&gt;[] holders = {\u00a0\/* \u5176\u4ed6ThreadLocal *\/};\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0for\u00a0(ThreadLocal&lt;?&gt; holder : holders) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 holder.remove();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(Exception e) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 logger.warn(&quot;\u6e05\u7406ThreadLocal\u5931\u8d25&quot;, e);\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0\/\/ \u91cd\u8bd5\u7b56\u7565\u5d4c\u5957\u7c7b\n\u00a0 \u00a0\u00a0public\u00a0static\u00a0class\u00a0RetryPolicy\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0private\u00a0final\u00a0int\u00a0maxRetries;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0private\u00a0final\u00a0long\u00a0retryDelayMs;\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0private\u00a0final\u00a0Map&lt;Runnable, AtomicInteger&gt; retryMap =\u00a0new\u00a0ConcurrentHashMap&lt;&gt;();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0public\u00a0RetryPolicy(int\u00a0maxRetries,\u00a0long\u00a0retryDelayMs)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0this.maxRetries = maxRetries;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0this.retryDelayMs = retryDelayMs;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0public\u00a0void\u00a0retry(Runnable task, Executor executor)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 retryMap.computeIfAbsent(task, k -&gt;\u00a0new\u00a0AtomicInteger()).incrementAndGet();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(retryDelayMs &gt;\u00a00) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 executor.execute(() -&gt; {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0try\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Thread.sleep(retryDelayMs);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0catch\u00a0(InterruptedException ignored) {}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 executor.execute(task);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 });\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\u00a0else\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 executor.execute(task);\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0public\u00a0int\u00a0getCurrentRetryCount(Runnable task)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0retryMap.getOrDefault(task,\u00a0new\u00a0AtomicInteger()).get();\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0public\u00a0int\u00a0getMaxRetries()\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0maxRetries;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<p><strong>\u5f02\u5e38\u5904\u7406\u5c0f\u7ed3<\/strong>\uff1a\u8981\u7279\u522b\u6ce8\u610f\u4f7f\u7528future.get()\u65b9\u6cd5\u65f6\uff0c\u6211\u4eec\u4e00\u5b9a\u8981\u6ce8\u610f\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\uff0c\u9632\u6b62\u4e3b\u7ebf\u7a0b\u65e0\u9650\u671f\u7684\u963b\u585e\u907f\u514d\u8fb9\u7f18\u7684\u4e1a\u52a1\u67e5\u8be2\u5f71\u54cd\u4e86\u4e3b\u4e1a\u52a1\u9020\u6210\u5f97\u4e0d\u507f\u5931\u7684\u6548\u679c\uff0c\u53e6\u5916\u6211\u4eec\u9700\u8981\u6ce8\u610f\u4e00\u4e2a\u70b9\u5c31\u662fsubmit()\u65b9\u6cd5\u7684\u63d0\u4ea4\u4efb\u52a1\u65f6\uff0cafterExecute(Runnable r, Throwable t)\u4e2d\u7684t\u6052\u4e3anull\uff0c\u5982\u679c\u662fexecute\u65b9\u6cd5\u63d0\u4ea4\u7684\u4efb\u52a1\uff0c\u90a3\u4e48\u5c31\u662f\u76f4\u63a5\u83b7\u53d6\u7684\u4efb\u52a1\u6267\u884c\u7684\u5f02\u5e38\uff0c\u5bf9\u4e8esubmit\u63d0\u4ea4\u7684\u4efb\u52a1\u5f02\u5e38\u5176\u88ab\u5c01\u88c5\u5230\u4e86Futrure\u00a0\u5305\u88c5\u5bf9\u8c61\u4e2d\uff0c\u4e00\u822c\u9700\u8981\u6211\u4eec\u518d\u6b21\u5224\u65ad\u4efb\u52a1\u65f6\u6267\u884c\u5b8c\u6bd5\u8fd8\u662f\u5f02\u5e38\u6216\u88ab\u53d6\u6d88\u4e86\uff0c\u5982\u679c\u53d1\u751f\u4e86\u5f02\u5e38\uff0cFuture.get()\u4f1a\u629b\u51fa\u5c01\u88c5\u7684ExecutionException\u5f02\u5e38\uff0c\u5f53\u7136\u8fd8\u53ef\u80fd\u662f\u53d6\u6d88\u5f02\u5e38\u4ee5\u53ca\u4e2d\u65ad\u5f02\u5e38\u3002invokeAll\u548cinvokeAny\u6211\u4eec\u9700\u8981\u5bf9\u8fd4\u56de\u7684Future\u7ed3\u679c\u68c0\u67e5\u53ef\u80fd\u629b\u51fa\u7684\u5f02\u5e38\uff0c\u5bf9\u4e8ecallable\u00a0\u524d\u9762\u4e00\u518d\u5f3a\u8c03\u4e86\u8981\u5bf9InterruptedException\u4e0d\u8981\u9759\u9ed8\u5904\u7406\uff0c\u56e0\u4e3a\u7ebf\u7a0b\u7684\u4e2d\u65ad\u6807\u8bb0\u53ea\u662f\u4e00\u4e2a\u534f\u4f5c\u65b9\u5f0f\uff0c\u4ed6\u5e76\u6ca1\u6709\u505c\u6b62\u5f53\u524d\u7ebf\u7a0b\u7684\u8fd0\u884c\uff0c\u6211\u4eec\u9700\u8981\u6839\u636e\u81ea\u8eab\u7684\u573a\u666f\u5bf9\u53d1\u751f\u7684\u4e2d\u65ad\u8fdb\u884c\u5feb\u901f\u54cd\u5e94\u4ee5\u53ca\u4f20\u9012\u4e2d\u65ad\u6807\u5fd7\u3002<\/p>\n<h2>5.4 \u62d2\u7edd\u7b56\u7565\u5b9e\u8df5<\/h2>\n<p>\u5148\u5e26\u5927\u5bb6\u56de\u987e\u4e00\u4e0b\u7b56\u7565\u662f\u5982\u4f55\u89e6\u53d1\u6267\u884c\u7684\u6d41\u7a0b\uff1a<\/p>\n<pre><code>\/\/\u6dfb\u52a0\u4efb\u52a1\uff0c\u5f53\u4e0d\u6ee1\u8db3\u6761\u4ef6\u65f6\u4f1a\u6267\u884c\u62d2\u7edd\u65b9\u6cd5reject\npublic\u00a0void\u00a0execute(Runnable command)\u00a0{\n\u00a0 \u00a0\/\/...\n\u00a0 \u00a0\u00a0if\u00a0(isRunning(c) &amp;&amp; workQueue.offer(command)) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0recheck = ctl.get();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(! isRunning(recheck) &amp;&amp;\u00a0remove(command))\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 reject(command);\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0else\u00a0if\u00a0(workerCountOf(recheck) ==\u00a00)\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 addWorker(null,\u00a0false);\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0else\u00a0if\u00a0(!addWorker(command,\u00a0false))\n\u00a0 \u00a0 \u00a0 \u00a0 reject(command);\n}\n\n\n\/\/\u8fd9\u91cc\u5c31\u662f\u62d2\u7edd\u7684\u5165\u53e3\u3002handler\u662f\u6709\u6784\u9020\u65b9\u6cd5\u4f20\u5165\nfinal\u00a0void\u00a0reject(Runnable command)\u00a0{\n\u00a0 \u00a0 handler.rejectedExecution(command,\u00a0this);\n}\n\n\npublic\u00a0ThreadPoolExecutor(int\u00a0corePoolSize,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0maximumPoolSize,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0long\u00a0keepAliveTime,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 TimeUnit unit,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 BlockingQueue&lt;Runnable&gt; workQueue,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ThreadFactory threadFactory,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 RejectedExecutionHandler handler) {\n\u00a0 \u00a0\u00a0\/\/....\n\u00a0 \u00a0\u00a0\/\/\u6307\u5b9a\u62d2\u7edd\u7b56\u7565\n\u00a0 \u00a0\u00a0this.handler = handler;\n}\n<\/code><\/pre>\n<p><strong>AbortPolicy<\/strong>\uff1a\u9ed8\u8ba4\u7684\u62d2\u7edd\u7b56\u7565\uff0c\u7b80\u5355\u7c97\u66b4\uff0c\u5f53execute\u4e2d\u6dfb\u52a0woker\u5931\u8d25\u65f6\uff0c\u76f4\u63a5\u5728\u5f53\u524d\u7ebf\u7a0b\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<pre><code>public\u00a0static\u00a0class\u00a0AbortPolicy\u00a0implements\u00a0RejectedExecutionHandler\u00a0{\n\n\n\u00a0 \u00a0 \u00a0\/\/\u76f4\u63a5\u629b\u51faRejectedExecutionException\n\u00a0 \u00a0\u00a0public\u00a0void\u00a0rejectedExecution(Runnable r, ThreadPoolExecutor e) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0RejectedExecutionException(&quot;Task &quot;\u00a0+ r.toString() +\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0&quot; rejected from &quot;\u00a0+\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0e.toString());\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u5feb\u901f\u5931\u8d25\uff0c\u7acb\u5373\u66b4\u9732\u7cfb\u7edf\u8fc7\u8f7d\u95ee\u9898\u3001\u907f\u514d\u4efb\u52a1\u9759\u9ed8\u4e22\u5931\uff0c\u4fbf\u4e8e\u76d1\u63a7\u7cfb\u7edf\u6355\u83b7<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u9700\u8981\u8c03\u7528\u65b9\u663e\u5f0f\u5904\u7406\u5f02\u5e38\uff0c\u589e\u52a0\u4ee3\u7801\u590d\u6742\u5ea6\uff0c\u53ef\u80fd\u4e2d\u65ad\u4e3b\u4e1a\u52a1\u6d41\u7a0b<\/p>\n<p><strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a\u9002\u7528\u4e8e\u90a3\u4e9b\u5bf9\u4efb\u52a1\u4e22\u5931\u975e\u5e38\u654f\u611f\uff0c\u914d\u5408\u7194\u65ad\u673a\u5236\u4f7f\u7528\u7684\u5feb\u901f\u5931\u8d25\u573a\u666f<\/p>\n<p><strong>CallerRunsPolicy<\/strong>\uff1a\u63d0\u4ea4\u4efb\u52a1\u7684\u7ebf\u7a0b\uff0c\u76f4\u63a5\u6267\u884c\u4efb\u52a1<\/p>\n<pre><code>public\u00a0static\u00a0class\u00a0CallerRunsPolicy\u00a0implements\u00a0RejectedExecutionHandler\u00a0{\n\u00a0 \u00a0\u00a0\/\/\u76f4\u63a5\u5728\u63d0\u4ea4\u4efb\u52a1\u7684\u7ebf\u7a0b\u4e2d\u6267\u884c\u4efb\u52a1\n\u00a0 \u00a0\u00a0public\u00a0void\u00a0rejectedExecution(Runnable r, ThreadPoolExecutor e) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(!e.isShutdown()) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 r.run();\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u4efb\u52a1\u90fd\u4f1a\u88ab\u6267\u884c\uff0c\u4e0d\u4f1a\u4e22\u4efb\u52a1\uff0c\u5e76\u4e14\u7531\u4e8e\u4e3b\u7ebf\u7a0b\u6267\u884c\u4efb\u52a1\uff0c\u5929\u7136\u7684\u6d41\u91cf\u63a7\u5236\uff0c\u907f\u514d\u4e86\u5927\u91cf\u7684\u4efb\u52a1\u8fdb\u5165\u7ebf\u7a0b\u6c60\u3002<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u8c03\u7528\u7ebf\u7a0b\u53ef\u80fd\u88ab\u963b\u585e\uff0c\u5bfc\u81f4\u4e0a\u6e38\u670d\u52a1\u96ea\u5d29\u3002\u4e0d\u9002\u5408\u9ad8\u5e76\u53d1\u573a\u666f\uff08\u53ef\u80fd\u62d6\u57ae\u6574\u4e2a\u8c03\u7528\u94fe\uff09\u3002<\/p>\n<p><strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a\u9002\u7528\u4e8e\u5904\u7406\u80fd\u529b\u4e0d\u9ad8\uff0c\u5e76\u4e14\u8d44\u6e90\u8fc7\u8f7d\u80fd\u591f\u5e73\u6ed1\u8fc7\u6e21\uff0c\u540c\u65f6\u4e0d\u4e22\u5931\u4efb\u52a1\u7684\u573a\u666f\u3002\u5982\uff1a\u4f4e\u5e76\u53d1\u3001\u9ad8\u53ef\u9760\u6027\u7684\u540e\u53f0\u4efb\u52a1\uff08\u5982\u65e5\u5fd7\u5f52\u6863\uff09\u3001\u5141\u8bb8\u540c\u6b65\u6267\u884c\u7684\u6279\u5904\u7406\u7cfb\u7edf\u3002<\/p>\n<p><strong>DiscardPolicy<\/strong>\uff1a\u76f4\u63a5\u4e22\u5f03\u88ab\u62d2\u7edd\u7684\u4efb\u52a1\uff0c\u4e0d\u505a\u4efb\u4f55\u901a\u77e5\u3002<\/p>\n<pre><code>public\u00a0static\u00a0class\u00a0DiscardPolicy\u00a0implements\u00a0RejectedExecutionHandler\u00a0{\n\u00a0 \u00a0\/\/\u7a7a\u5b9e\u73b0\n\u00a0 \u00a0\u00a0public\u00a0void\u00a0rejectedExecution(Runnable r, ThreadPoolExecutor e) {\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u5b9e\u73b0\u7b80\u5355\uff0c\u65e0\u989d\u5916\u6027\u80fd\u5f00\u9500\u3002\u907f\u514d\u5f02\u5e38\u4f20\u64ad\u5f71\u54cd\u4e3b\u6d41\u7a0b<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u6570\u636e\u9759\u9ed8\u4e22\u5931\uff0c\u53ef\u80fd\u4f1a\u63a9\u76d6\u7cfb\u7edf\u5bb9\u91cf\u95ee\u9898<\/p>\n<p><strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a\u8fb9\u7f18\u4e1a\u52a1\u7684\u76d1\u63a7\u4e0a\u62a5\u6570\u636e\uff0c\u7edf\u8ba1\u7c7b\u7684uv\u3001pv\u7edf\u8ba1\u4efb\u52a1<\/p>\n<p>DiscardOldestPolicy\uff1a\u4e22\u5f03\u961f\u5217\u4e2d\u6700\u65e7\u7684\u4efb\u52a1\uff0c\u7136\u540e\u91cd\u8bd5\u63d0\u4ea4\u5f53\u524d\u4efb\u52a1\u3002<\/p>\n<pre><code>public\u00a0static\u00a0class\u00a0DiscardOldestPolicy\u00a0implements\u00a0RejectedExecutionHandler\u00a0{\n\u00a0 \u00a0\u00a0\/\/\u4e22\u5f03\u961f\u5217\u4e2d\u6700\u65e7\u7684\u4efb\u52a1\uff0c\u91cd\u8bd5\u5f53\u524d\u4efb\u52a1\n\u00a0 \u00a0\u00a0public\u00a0void\u00a0rejectedExecution(Runnable r, ThreadPoolExecutor e) {\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0if\u00a0(!e.isShutdown()) {\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 e.getQueue().poll();\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 e.execute(r);\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<p><strong>\u4f18\u70b9<\/strong>\uff1a\u4f18\u5148\u4fdd\u8bc1\u65b0\u4efb\u52a1\u6267\u884c\uff0c\u907f\u514d\u961f\u5217\u5806\u79ef\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<p><strong>\u7f3a\u70b9<\/strong>\uff1a\u53ef\u80fd\u4e22\u5931\u5173\u952e\u65e7\u4efb\u52a1\u3001\u4efb\u52a1\u6267\u884c\u987a\u5e8f\u65e0\u6cd5\u4fdd\u8bc1\u3002<\/p>\n<p><strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a\u9002\u7528\u4e8e\u53ef\u5bb9\u5fcd\u90e8\u5206\u6570\u636e\u4e22\u5931\uff0c\u5e76\u4e14\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\u4e8e\u5386\u53f2\u6570\u636e\u7684\u573a\u666f\uff0c\u6bd4\u5982\uff1a\u884c\u60c5\u63a8\u9001\u3002<\/p>\n<p>\u901a\u8fc7\u4e0a\u7ebf\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230JDK\u5185\u7f6e\u7b56\u7565\u57fa\u672c\u4e0a\u53ea\u4f7f\u7528\u4e8e\u7b80\u5355\u5904\u7406\u7684\u573a\u666f\uff0c\u5728\u751f\u4ea7\u5b9e\u8df5\u4e2d\u4e00\u822c\u63a8\u8350\u6211\u4eec\u81ea\u5b9a\u4e49\u62d2\u7edd\u7b56\u7565\uff0c\u8fdb\u884c\u76f8\u5173\u7684\u4e1a\u52a1\u5904\u7406\u3002<\/p>\n<p><strong>1. \u81ea\u5b9a\u4e49RejectedExecutionHandler<\/strong>\uff1a<\/p>\n<pre><code>\/**\n\u00a0* \u5e26\u76d1\u63a7\u7edf\u8ba1\u7684\u62d2\u7edd\u7b56\u7565\u5904\u7406\u5668\n\u00a0*\/\npublic\u00a0class\u00a0MetricsRejectedExecutionHandler\u00a0implements\u00a0RejectedExecutionHandler\u00a0{\n\u00a0 \u00a0\u00a0private\u00a0static\u00a0final\u00a0org.slf4j.Logger\u00a0logger\u00a0=\u00a0org.slf4j.LoggerFactory.getLogger(MetricsRejectedExecutionHandler.class);\n\n\n\u00a0 \u00a0\u00a0\/\/ \u7edf\u8ba1\u88ab\u62d2\u7edd\u7684\u4efb\u52a1\u6570\u91cf\n\u00a0 \u00a0\u00a0private\u00a0final\u00a0AtomicLong\u00a0rejectedCount\u00a0=\u00a0new\u00a0AtomicLong(0);\n\n\n\u00a0 \u00a0\u00a0@Override\n\u00a0 \u00a0\u00a0public\u00a0void\u00a0rejectedExecution(Runnable r, ThreadPoolExecutor executor)\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 1. \u91c7\u96c6\u7ebf\u7a0b\u6c60\u5173\u952e\u6307\u6807\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0poolSize\u00a0=\u00a0executor.getPoolSize();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0activeThreads\u00a0=\u00a0executor.getActiveCount();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0corePoolSize\u00a0=\u00a0executor.getCorePoolSize();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0maxPoolSize\u00a0=\u00a0executor.getMaximumPoolSize();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0int\u00a0queueSize\u00a0=\u00a0executor.getQueue().size();\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0long\u00a0completedTasks\u00a0=\u00a0executor.getCompletedTaskCount();\n\n\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 2. \u9012\u589e\u62d2\u7edd\u8ba1\u6570\u5668\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0long\u00a0totalRejected\u00a0=\u00a0rejectedCount.incrementAndGet();\n\n\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 3. \u8f93\u51fa\u8b66\u544a\u65e5\u5fd7\uff08\u5305\u542b\u5b8c\u6574\u6307\u6807\uff09\n\u00a0 \u00a0 \u00a0 \u00a0 logger.warn(&quot;&quot;&quot;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u4efb\u52a1\u88ab\u62d2\u7edd\u6267\u884c\uff01\u7ebf\u7a0b\u6c60\u72b6\u6001:\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 |- \u6d3b\u8dc3\u7ebf\u7a0b\u6570\/\u5f53\u524d\u7ebf\u7a0b\u6570: {}\/{}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 |- \u6838\u5fc3\/\u6700\u5927\u7ebf\u7a0b\u6570: {}\/{}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 |- \u961f\u5217\u5927\u5c0f: {}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 |- \u5df2\u5b8c\u6210\u4efb\u52a1\u6570: {}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 |- \u5386\u53f2\u62d2\u7edd\u603b\u6570: {}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 |- \u88ab\u62d2\u7edd\u4efb\u52a1: {}\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 &quot;&quot;&quot;,\u00a0\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 activeThreads, poolSize,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 corePoolSize, maxPoolSize,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 queueSize,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 completedTasks,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 totalRejected,\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 r.getClass().getName());\n\n\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 4. \u53ef\u9009\uff1a\u964d\u7ea7\u5904\u7406\uff08\u5982\u5b58\u5165\u6570\u636e\u5e93\u7b49\u5f85\u91cd\u8bd5\uff09\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ fallbackToDatabase(r);\n\n\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\/\/ 5. \u629b\u51faRejectedExecutionException\uff08\u4fdd\u6301\u9ed8\u8ba4\u884c\u4e3a\uff09\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0throw\u00a0new\u00a0RejectedExecutionException(&quot;Task &quot;\u00a0+ r.toString() +\u00a0&quot; rejected&quot;);\n\u00a0 \u00a0 }\n\u00a0 \u00a0\u00a0\n\u00a0 \u00a0\u00a0\/\/ \u83b7\u53d6\u7d2f\u8ba1\u62d2\u7edd\u6b21\u6570\uff08\u7528\u4e8e\u76d1\u63a7\uff09\n\u00a0 \u00a0\u00a0public\u00a0long\u00a0getRejectedCount()\u00a0{\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0return\u00a0rejectedCount.get();\n\u00a0 \u00a0 }\n}\n<\/code><\/pre>\n<ul>\n<li><strong>\u8bb0\u5f55\u65e5\u5fd7\u5e76\u544a\u8b66<\/strong>\uff1a\u6240\u6709\u7684\u5f02\u5e38\u5904\u7406\u4e2d\uff0c\u6700\u5e38\u89c1\u7b80\u5355\u7684\u65b9\u5f0f\u65e0\u5916\u4e4e\uff0c\u5148\u8bb0\u5f55\u4e2a\u65e5\u5fd7\uff0c\u7136\u540e\u6709\u544a\u8b66\u7cfb\u7edf\u7684\u8fdb\u884c\u76f8\u5173\u7684\u67d0\u4e66\u3001\u67d0\u4fe1\u4ee5\u53ca\u77ed\u4fe1\u7b49\u7684\u544a\u8b66\u4fe1\u606f\u63a8\u9001\uff0c\u65b9\u4fbf\u5f00\u53d1\u4eba\u5458\u4ee5\u53ca\u8fd0\u7ef4\u4eba\u5458\u7684\u53ca\u65f6\u53d1\u73b0\u95ee\u9898\u5e76\u4ecb\u5165\u5904\u7406\u3002<\/li>\n<li><strong>\u515c\u5e95\u5904\u7406\u673a\u5236<\/strong>\uff1a\u4e00\u822c\u5e38\u89c1\u7684\u5c31\u662f\u901a\u8fc7\u5f02\u6b65\u7684\u65b9\u5f0f\u63d0\u4ea4\u5230MQ\uff0c\u7136\u540e\u7edf\u4e00\u8fdb\u884c\u515c\u5e95\u5904\u7406\u3002<\/li>\n<li><strong>\u5e26\u8d85\u65f6\u548c\u91cd\u8bd5\u7684\u62d2\u7edd<\/strong>\uff1a\u53ef\u4ee5\u5c1d\u8bd5\u7b49\u5f85\u4e00\u5c0f\u6bb5\u65f6\u95f4\uff0c\u6216\u8005\u91cd\u8bd5\u51e0\u6b21\u63d0\u4ea4\uff0c\u5982\u679c\u4ecd\u7136\u5931\u8d25\uff0c\u518d\u6267\u884c\u6700\u7ec8\u7684\u62d2\u7edd\u903b\u8f91\uff08\u5982\u544a\u8b66\u3001\u6301\u4e45\u5316\u6216\u629b\u5f02\u5e38\uff09\u3002<\/li>\n<li><strong>\u52a8\u6001\u8c03\u6574\u7b56\u7565<\/strong>\uff1a\u6839\u636e\u7cfb\u7edf\u7684\u8d1f\u8f7d\u6216\u4efb\u52a1\u7c7b\u578b\uff0c\u52a8\u6001\u7684\u6267\u884c\u515c\u5e95\u7b56\u7565\u673a\u5236\uff0c\u5c31\u5982\u524d\u9762\u5199\u7684\u6e90\u7801\u793a\u4f8b\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<p><strong>2. \u6839\u636e\u81ea\u8eab\u4e1a\u52a1\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u62d2\u7edd\u7b56\u7565\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u6838\u5fc3\u4e1a\u52a1\uff0c\u4e0d\u5bb9\u4e22\u5931<\/strong>\uff1a\u5982\u679c\u4efb\u52a1\u975e\u5e38\u91cd\u8981\uff0c\u4e0d\u80fd\u4e22\u5931\uff0c\u53ef\u4ee5\u8003\u8651\uff1a<\/li>\n<li>\n<ul>\n<li>CallerRunsPolicy\uff1a\u8c03\u7528\u7ebf\u7a0b\u627f\u62c5\u4efb\u52a1\u6267\u884c\u538b\u529b\uff0c\u662f\u5426\u53ef\u652f\u6491\uff1b<\/li>\n<li>\u81ea\u5b9a\u4e49\u7b56\u7565\uff1a\u5c1d\u8bd5\u6301\u4e45\u5316\u5230MQ\u6216DB\uff0c\u7136\u540e\u7531\u4e13\u95e8\u7684\u6d88\u8d39\u7ec4\u8865\u507f\u4efb\u52a1\u5904\u7406\uff1b<\/li>\n<li>AbortPolicy\uff1a\u5982\u679c\u5e0c\u671b\u7cfb\u7edf\u5feb\u901f\u5931\u8d25\u5e76\u7531\u4e0a\u5c42\u8fdb\u884c\u91cd\u8bd5\u6216\u7194\u65ad\u3002<br \/>*<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u975e\u6838\u5fc3\u4e1a\u52a1\uff0c\u53ef\u5bb9\u5fcd\u90e8\u5206\u4e22\u5931<\/strong>\uff1a<\/li>\n<li>\n<ul>\n<li>DiscardOldestPolicy\uff1a\u65b0\u4efb\u52a1\u66f4\u91cd\u8981\u65f6\uff0c\u5982\u884c\u60c5\u63a8\u9001\uff1b<\/li>\n<li>DiscardPolicy\uff1a\u8fb9\u7f18\u4e1a\u52a1\u573a\u666f\uff0c\u6bd4\u5982\u4e00\u4e9bpv\u7edf\u8ba1\u7b49\uff0c\u4e22\u5931\u4e86\u65e0\u6240\u8c13\uff1b<\/li>\n<li>\u53ca\u65f6\u7684\u8fdb\u884c\u76d1\u63a7\u67e5\u770b\uff0c\u4e86\u89e3\u4efb\u52a1\u7684\u4e22\u5931\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>3. \u7ed3\u5408\u7ebf\u7a0b\u6c60\u53c2\u6570\u7efc\u5408\u8003\u8651\uff1a<\/strong><\/p>\n<ul>\n<li>\u62d2\u7edd\u7b56\u7565\u7684\u9009\u62e9\u4e5f\u4e0e\u7ebf\u7a0b\u6c60\u7684\u961f\u5217\u7c7b\u578b\uff08\u6709\u754c\/\u65e0\u754c\uff09\u3001\u961f\u5217\u5bb9\u91cf\u3001maximumPoolSize\u7b49\u53c2\u6570\u5bc6\u5207\u76f8\u5173\u3002<\/li>\n<li>\u5982\u679c\u4f7f\u7528\u65e0\u754c\u961f\u5217LinkedBlockingQueue\u7684\u65e0\u53c2\u6784\u9020\uff0c\u53ea\u6709\u673a\u5668\u5185\u5b58\u4e0d\u591f\u65f6\u624d\u4f1a\u8fdb\u884c\u62d2\u7edd\u7b56\u7565\uff0c\u4e0d\u8fc7\u8fd9\u79cd\u6781\u7aef\u573a\u666f\u5df2\u7ecf\u4e0d\u662f\u5f71\u54cd\u7ebf\u7a0b\u6c60\u672c\u8eab\uff0c\u5185\u5b58\u4e0d\u591f\u53ef\u80fd\u5bfc\u81f4Java\u8fdb\u7a0b\u88ab\u64cd\u4f5c\u7cfb\u7edf\u76f4\u63a5kill\u53ef\u80fd\u3002<\/li>\n<li>\u5982\u679c\u4f7f\u7528\u6709\u754c\u961f\u5217\uff0c\u9700\u8981\u6743\u8861\u961f\u5217\u7684\u5927\u5c0f\uff0c\u6838\u5fc3\u573a\u666f\u751a\u81f3\u53ef\u4ee5\u52a8\u6001\u8ffd\u8e2a\u963b\u585e\u961f\u5217\u5927\u5c0f\uff0c\u4ee5\u53ca\u52a8\u6001\u8c03\u6574\u961f\u5217\u5927\u5c0f\u6765\u4fdd\u8bc1\u6838\u5fc3\u4e1a\u52a1\u7684\u6b63\u5e38\u6d41\u8f6c\u3002<\/li>\n<\/ul>\n<ol start=\"4\">\n<li><strong>\u5145\u5206\u6d4b\u8bd5\u548c\u76d1\u63a7<\/strong>\uff1a\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u7b56\u7565\uff0c\u90fd\u5fc5\u987b\u5728\u538b\u6d4b\u73af\u5883\u4e2d\u5145\u5206\u6d4b\u8bd5\u5176\u884c\u4e3a\uff0c\u5e76\u5728\u7ebf\u4e0a\u73af\u5883\u5efa\u7acb\u5b8c\u5584\u7684\u76d1\u63a7\u4f53\u7cfb\uff0c\u76d1\u63a7\u7ebf\u7a0b\u6c60\u7684\u5404\u9879\u6307\u6807\uff08\u6d3b\u8dc3\u7ebf\u7a0b\u6570\u3001\u961f\u5217\u957f\u5ea6\u3001\u4efb\u52a1\u5b8c\u6210\u6570\u3001\u4efb\u52a1\u62d2\u7edd\u6570\u7b49\uff09\u3002\u5f53\u62d2\u7edd\u53d1\u751f\u65f6\uff0c\u5e94\u6709\u76f8\u5e94\u7684\u544a\u8b66\u901a\u77e5\u3002<\/li>\n<\/ol>\n<p><strong>\u62d2\u7edd\u7b56\u7565\u5c0f\u7ed3<\/strong>\uff1a<\/p>\n<p>\u7b56\u7565\u7684\u9009\u62e9\u8ddf\u6211\u4eec\u5927\u591a\u6570\u7684\u7cfb\u7edf\u8bbe\u8ba1\u54f2\u5b66\u662f\u4fdd\u6301\u4e00\u81f4\u7684\uff0c\u90fd\u662f\u5728\u5e94\u5bf9\u4e0d\u540c\u7684\u573a\u666f\u4e2d\uff0c\u505a\u51fa\u4e00\u5b9a\u7684trade off\u3002\u6700\u597d\u7684\u7b56\u7565\u9700\u8981\u6839\u636e\u4e1a\u52a1\u573a\u666f\u3001\u7cfb\u7edf\u5bb9\u5fcd\u5ea6\u3001\u8d44\u6e90\u7b49\u65b9\u9762\u7684\u7efc\u5408\u8003\u91cf\uff0c<strong>\u4e00\u4e2a\u9ec4\u91d1\u7684\u5b9e\u8df5\u539f\u5219<\/strong>\uff1a\u62d2\u7edd\u4e8b\u4ef6\u505a\u597d\u76d1\u63a7\u544a\u8b66\u3001\u6839\u636e\u4e1a\u52a1SLA\u5b9a\u4e49\u7b56\u7565\uff0c\u662f\u5426\u53ef\u4e22\u5931\uff0c\u5feb\u901f\u5931\u8d25\u7b49\uff0c\u5b9a\u671f\u7684\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\uff0c\u9a8c\u8bc1\u7b56\u7565\u7684\u6709\u6548\u6027\u3002<\/p>\n<h2>5.5 \u6c60\u9694\u79bb\u5b9e\u8df5<\/h2>\n<p><strong>\u6838\u5fc3\u601d\u60f3<\/strong>\uff1a\u6839\u636e\u4efb\u52a1\u7684\u8d44\u6e90\u7c7b\u578b \u3001\u4f18\u5148\u7ea7\u548c\u4e1a\u52a1\u7279\u6027 \uff0c\u5212\u5206\u591a\u4e2a\u72ec\u7acb\u7684\u7ebf\u7a0b\u6c60\uff0c\u907f\u514d\u4e0d\u540c\u6027\u8d28\u7684\u4efb\u52a1\u76f8\u4e92\u5e72\u6270\u3002<\/p>\n<p><strong>1. \u9694\u79bb\u7ef4\u5ea6<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>\u8d44\u6e90\u7c7b\u578b<\/strong>\uff1aCPU\u5bc6\u96c6\u578b vs \u00a0I\/O\u5bc6\u96c6\u578b\u4efb\u52a1<\/li>\n<li><strong>\u6267\u884c\u65f6\u957f<\/strong>\uff1a\u77ed\u65f6\u4efb\u52a1\uff08\u6beb\u79d2\u7ea7\uff09 vs \u957f\u65f6\u4efb\u52a1\uff08\u5206\u949f\u7ea7\uff09<\/li>\n<li><strong>\u5b9e\u65f6\u6027\u8981\u6c42<\/strong>\uff1a\u9ad8\u5b9e\u65f6\u6027 vs \u53ef\u5ef6\u8fdf\uff08\u6700\u7ec8\u4e00\u81f4\u5373\u53ef\uff09<\/li>\n<li><strong>\u4e1a\u52a1\u91cd\u8981\u6027<\/strong>\uff1a\u652f\u4ed8\u4ea4\u6613\uff08\u9ad8\u4f18\u5148\u7ea7\uff09 vs \u65e5\u5fd7\u6e05\u7406\uff08\u4f4e\u4f18\u5148\u7ea7\uff09<\/li>\n<li><strong>\u662f\u5426\u4f9d\u8d56\u5916\u90e8\u8d44\u6e90<\/strong>\uff1a\u4f8b\u5982\uff0c\u8bbf\u95ee\u7279\u5b9a\u6570\u636e\u5e93\u3001\u8c03\u7528\u7279\u5b9a\u7b2c\u4e09\u65b9API\u7684\u4efb\u52a1\u53ef\u4ee5\u5f52\u4e3a\u4e00\u7c7b\u3002<\/li>\n<\/ul>\n<p><strong>2. \u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u7ebf\u7a0b\u6c60\u72ec\u7acb\u4f7f\u7528<\/strong>\uff1a\u5728\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u4e0b\uff0c\u4e3a\u81ea\u5df1\u7684\u7279\u5b9a\u4e1a\u52a1\uff0c\u521b\u5efa\u72ec\u7acb\u7684\u7ebf\u7a0b\u6c60\u3002<\/p>\n<ul>\n<li><strong>\u7ebf\u7a0b\u547d\u540d<\/strong>\uff1a\u901a\u8fc7ThreadFactory\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u6c60\u53ca\u5176\u7ebf\u7a0b\u8bbe\u7f6e\u6709\u610f\u4e49\u7684\u540d\u79f0\uff0c\u4f8b\u5982netty-io-compress-pool-%d\uff0cexcel-export-pool-%d, \u4e3b\u8981\u65b9\u4fbf\u533a\u522b\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u4ee5\u53ca\u95ee\u9898\u6392\u67e5\u3002<\/li>\n<li><strong>\u53c2\u6570\u8c03\u4f18<\/strong>\uff1a\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u8bbe\u7f6e\u4e0d\u540c\u7684\u53c2\u6570\u3002<\/li>\n<li>\n<ul>\n<li>corePoolSize, maximumPoolSize\uff1aCPU\u5bc6\u96c6\u578b\u7684\u8ba1\u7b97\u4efb\u52a1\u53ef\u4ee5\u8bbe\u7f6e\u5c0f\u70b9\u51cf\u5c11\u4e0a\u4e0b\u6587\u7684\u5207\u6362\uff0cI\/O\u5bc6\u96c6\u578b\u53ef\u4ee5\u8f83\u5927\uff0c\u5728io\u963b\u585e\u7b49\u5f85\u671f\u95f4\uff0c\u591a\u53bb\u5904\u7406\u5176\u4ed6\u4efb\u52a1\u3002<\/li>\n<li>\u963b\u585e\u961f\u5217blockQueue\uff1a\u9009\u62e9\u5408\u9002\u7684\u961f\u5217\u7c7b\u578b\uff0c\u4ee5\u53ca\u8bbe\u7f6e\u5408\u7406\u7684\u961f\u5217\u5927\u5c0f\u3002<\/li>\n<li>RejectedExecutionHandler\uff1a\u6709\u5185\u7f6e\u7684\u56db\u79cd\u7684\u7b56\u7565\u4ee5\u53ca\u81ea\u5b9a\u4e49\u7b56\u7565\u9009\u62e9\uff0c\u4e00\u822c\u5efa\u8bae\u505a\u597d\u65e5\u5fd7\u3001\u76d1\u63a7\u4ee5\u53ca\u515c\u5e95\u7684\u5904\u7406\u3002<br \/>*<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>3. \u81ea\u5b9a\u4e49Executor\u907f\u514d\u7ebf\u7a0b\u6c60\u5171\u7528<\/strong><\/p>\n<pre><code>\/\/ \u521b\u5efaCPU\u5bc6\u96c6\u578b\u4efb\u52a1\u7ebf\u7a0b\u6c60\uff08\u7ebf\u7a0b\u6570=CPU\u6838\u5fc3\u6570\uff09\nExecutorService cpuIntensiveExecutor =\u00a0new\u00a0ThreadPoolExecutor(\n\u00a0 \u00a0 Runtime.getRuntime().availableProcessors(),\u00a0\/\/ \u6838\u5fc3\u7ebf\u7a0b\u6570=CPU\u6838\u5fc3\u6570\n\u00a0 \u00a0 Runtime.getRuntime().availableProcessors(),\u00a0\/\/ \u6700\u5927\u7ebf\u7a0b\u6570=CPU\u6838\u5fc3\u6570\n\u00a0 \u00a0\u00a030L, TimeUnit.SECONDS,\n\u00a0 \u00a0\u00a0new\u00a0LinkedBlockingQueue&lt;&gt;(500),\n\u00a0 \u00a0\u00a0new\u00a0ThreadFactoryBuilder()\n\u00a0 \u00a0 \u00a0 \u00a0 .setNameFormat(&quot;cpu-pool-%d&quot;)\n\u00a0 \u00a0 \u00a0 \u00a0 .setPriority(Thread.MAX_PRIORITY)\u00a0\/\/ \u63d0\u9ad8\u4f18\u5148\u7ea7\n\u00a0 \u00a0 \u00a0 \u00a0 .build(),\n\u00a0 \u00a0\u00a0new\u00a0ThreadPoolExecutor.AbortPolicy()\u00a0\/\/ \u76f4\u63a5\u62d2\u7edd\n);\n\n\n\/\/ \u4f7f\u7528\u793a\u4f8b\nCompletableFuture.supplyAsync(() -&gt; {\n\u00a0 \u00a0\u00a0\/\/ \u77e9\u9635\u8ba1\u7b97\u7b49CPU\u5bc6\u96c6\u578b\u4efb\u52a1\n\u00a0 \u00a0\u00a0double[][] result = matrixMultiply(largeMatrixA, largeMatrixB);\n\u00a0 \u00a0\u00a0return\u00a0result;\n}, cpuIntensiveExecutor)\n.thenAccept(result -&gt; {\n\u00a0 \u00a0 System.out.println(&quot;\u8ba1\u7b97\u7ed3\u679c\u7ef4\u5ea6: &quot;\u00a0+ result.length +\u00a0&quot;x&quot;\u00a0+ result[0].length);\n});\n<\/code><\/pre>\n<p><strong>\u7ebf\u7a0b\u6c60\u9694\u79bb\u5c0f\u7ed3<\/strong>\uff1a<\/p>\n<p>\u4e13\u6c60\u4e13\u7528\u7684\u672c\u8d28\u662f\u901a\u8fc7\u7269\u7406\u9694\u79bb\u5b9e\u73b0\uff1a<\/p>\n<ul>\n<li>\u8d44\u6e90\u4fdd\u969c \uff1a\u5173\u952e\u4e1a\u52a1\u72ec\u5360\u7ebf\u7a0b\u8d44\u6e90<\/li>\n<li>\u6545\u969c\u9694\u79bb \uff1a\u907f\u514d\u7ea7\u8054\u96ea\u5d29<\/li>\n<li>\u6027\u80fd\u4f18\u5316 \uff1a\u9488\u5bf9\u4efb\u52a1\u7c7b\u578b\u6700\u5927\u5316\u541e\u5410\u91cf<\/li>\n<\/ul>\n<p>\u6700\u7ec8\u5448\u73b0\u7684\u6548\u679c\u662f\u50cf\u4e13\u4e1a\u53a8\u623f\u7684\u5206\u533a\uff08\u5207\u914d\u533a\/\u7092\u83dc\u533a\/\u9762\u70b9\u533a\uff09\u4e00\u6837\uff0c\u8ba9\u6bcf\u4e2a\u7ebf\u7a0b\u6c60\u4e13\u6ce8\u5904\u7406\u540c\u7c7b\u4efb\u52a1\uff0c\u63d0\u5347\u6574\u4f53\u6548\u7387\u548c\u53ef\u9760\u6027\u3002<\/p>\n<h2>\u516d\u3001\u603b\u7ed3<\/h2>\n<p>\u7ebf\u7a0b\u6c60\u662fJava\u5e76\u53d1\u7f16\u7a0b\u7684\u6838\u5fc3\u7ec4\u4ef6\uff0c\u901a\u8fc7\u590d\u7528\u7ebf\u7a0b\u51cf\u5c11\u8d44\u6e90\u5f00\u9500\uff0c\u63d0\u5347\u7cfb\u7edf\u541e\u5410\u91cf\u3002\u5176\u6838\u5fc3\u8bbe\u8ba1\u5305\u62ec\u7ebf\u7a0b\u590d\u7528\u673a\u5236 \u3001\u4efb\u52a1\u961f\u5217\u548c\u62d2\u7edd\u7b56\u7565 \uff0c\u901a\u8fc7ThreadPoolExecutor\u7684\u53c2\u6570\uff08\u6838\u5fc3\u7ebf\u7a0b\u6570\u3001\u6700\u5927\u7ebf\u7a0b\u6570\u3001\u961f\u5217\u5bb9\u91cf\u7b49\uff09\u5b9e\u73b0\u7075\u6d3b\u7684\u8d44\u6e90\u63a7\u5236\u3002\u7ebf\u7a0b\u6c60\u7684\u751f\u547d\u5468\u671f\u7531RUNNING\u3001SHUTDOWN\u7b49\u72b6\u6001\u7ba1\u7406\uff0c\u786e\u4fdd\u4efb\u52a1\u6709\u5e8f\u6267\u884c\u6216\u7ec8\u6b62\u3002<\/p>\n<p>\u5185\u7f6e\u7ebf\u7a0b\u6c60\uff08\u5982Executors.newCachedThreadPool\uff09\u867d\u4fbf\u6377\uff0c\u4f46\u5b58\u5728\u5185\u5b58\u6ea2\u51fa\u6216\u65e0\u754c\u961f\u5217\u5806\u79ef\u7684\u98ce\u9669\uff0c\u9700\u8c28\u614e\u9009\u62e9\u3002invokeAll\u7684\u8d85\u65f6\u5931\u6548\u548csubmit\u63d0\u4ea4\u4efb\u52a1\u7684\u5f02\u5e38\u6d88\u5931\u662f\u5e38\u89c1\u9677\u9631\u9700\u901a\u8fc7\u6b63\u786e\u5904\u7406\u4e2d\u65ad\u548c\u68c0\u67e5Future.get()\u89c4\u907f\u3002<\/p>\n<p>\u6700\u4f73\u5b9e\u8df5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5f02\u5e38\u5904\u7406\uff1a\u901a\u8fc7afterExecute\u6765\u5bf9\u53d1\u751f\u7684\u5f02\u5e38\u8fdb\u884c\u515c\u5e95\u5904\u7406\uff0c\u4efb\u52a1\u7ec6\u7c92\u5ea6\u7684try catch\u6216UncaughtExceptionH\u6355\u83b7\u5f02\u5e38\u5904\u7406\u9632\u6b62\u7ebf\u7a0b\u5d29\u6e83\u9000\u51fa\uff1b<\/li>\n<li>\u62d2\u7edd\u7b56\u7565\uff1a\u6839\u636e\u4e1a\u52a1\u9009\u62e9\u62d2\u7edd\u7b56\u7565\u6216\u81ea\u5b9a\u4e49\u964d\u7ea7\u903b\u8f91\uff0c\u751f\u4ea7\u7ea7\u5e94\u7528\u5efa\u8bae\u5c3d\u91cf\u81ea\u5b9a\u4e49\u5904\u7406\uff1b<\/li>\n<li>\u7ebf\u7a0b\u9694\u79bb \uff1a\u6309\u4efb\u52a1\u7c7b\u578b\uff08CPU\/I\/O\uff09\u6216\u4f18\u5148\u7ea7\u5212\u5206\u7ebf\u7a0b\u6c60\uff0c\u907f\u514d\u8d44\u6e90\u7ade\u4e89\u3002<\/li>\n<\/ul>\n<p>\u5408\u7406\u4f7f\u7528\u7ebf\u7a0b\u6c60\u80fd\u663e\u8457\u63d0\u5347\u6027\u80fd\uff0c\u4f46\u9700\u7ed3\u5408\u4e1a\u52a1\u573a\u666f\u7cbe\u7ec6\u8c03\u53c2\uff0c\u786e\u4fdd\u7a33\u5b9a\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e9b\u751f\u4ea7\u5b9e\u8df5\u4e0a\u7684\u6307\u5bfc\uff0c\u51cf\u5c11\u4e00\u4e9b\u56e0\u4e3a\u4e0d\u719f\u6089\u7ebf\u7a0b\u6c60\u76f8\u5173\u539f\u7406\u751f\u4ea7\u8bef\u7528\u5bfc\u81f4\u7684\u4e00\u4e9b\u95ee\u9898\u3002<\/p>\n<h5>\u5f80\u671f\u56de\u987e<\/h5>\n<p>1.\u00a0\u57fa\u4e8e\u6d4f\u89c8\u5668\u6269\u5c55 API Mock \u5de5\u5177\u5f00\u53d1\u63a2\u7d22\uff5c\u5f97\u7269\u6280\u672f<\/p>\n<p>2.\u00a0\u7834\u89e3gh-ost\u53d8\u66f4\u5bfc\u81f4MySQL\u8868\u81a8\u80c0\u4e4b\u8c1c\uff5c\u5f97\u7269\u6280\u672f<\/p>\n<p>3.\u00a0MySQL\u5355\u8868\u4e3a\u4f55\u522b\u8d852000\u4e07\u884c\uff1f\u63ed\u79d8B+\u6811\u4e0e16KB\u9875\u7684\u751f\u6b7b\u535a\u5f08\uff5c\u5f97\u7269\u6280\u672f<\/p>\n<p>4.\u00a00\u57fa\u7840\u5e26\u4f60\u7cbe\u901aJava\u5bf9\u8c61\u5e8f\u5217\u5316&#8211;\u4ee5Hessian\u4e3a\u4f8b\uff5c\u5f97\u7269\u6280\u672f<\/p>\n<p>5.\u00a0\u524d\u7aef\u65e5\u5fd7\u56de\u635e\u7cfb\u7edf\u7684\u6027\u80fd\u4f18\u5316\u5b9e\u8df5\uff5c\u5f97\u7269\u6280\u672f<\/p>\n<h5>\u6587 \/\u820d\u5f97<\/h5>\n<p>\u5173\u6ce8\u5f97\u7269\u6280\u672f\uff0c\u6bcf\u5468\u66f4\u65b0\u6280\u672f\u5e72\u8d27<\/p>\n<p>\u8981\u662f\u89c9\u5f97\u6587\u7ae0\u5bf9\u4f60\u6709\u5e2e\u52a9\u7684\u8bdd\uff0c\u6b22\u8fce\u8bc4\u8bba\u8f6c\u53d1\u70b9\u8d5e\uff5e<\/p>\n<p>\u672a\u7ecf\u5f97\u7269\u6280\u672f\u8bb8\u53ef\u4e25\u7981\u8f6c\u8f7d\uff0c\u5426\u5219\u4f9d\u6cd5\u8ffd\u7a76\u6cd5\u5f8b\u8d23\u4efb\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000047319805\">https:\/\/segmentfault.com\/a\/1190000047319805<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u5f15 \u8a00 \u4e3a\u4ec0\u4e48\u8fdb\u884c\u6e90\u7801\u89d2\u5ea6\u7684\u6df1\u5ea6\u89e3\u6790\uff1f \u5927\u5bb6\u5728\u9879\u76ee\u4e2d\u5230\u5904\u90fd\u5728\u4f7f\u7528\u7ebf\u7a0b\u6c60\u505a\u4e00\u4e9b\u6027\u80fd\u63a5\u53e3\u5c42\u6b21\u7684\u4f18\u5316\uff0c\u539f\u5148\u4e32\u884c\u7684 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10021031","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10021031"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021031\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10021031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10021031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10021031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}