{"id":10008262,"date":"2023-09-11T16:14:23","date_gmt":"2023-09-11T08:14:23","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008262"},"modified":"2023-09-11T16:14:23","modified_gmt":"2023-09-11T08:14:23","slug":"%e6%8e%a2%e7%b4%a2-java-%e7%ba%bf%e7%a8%8b%e7%9a%84%e5%88%9b%e5%bb%ba","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008262","title":{"rendered":"\u63a2\u7d22 Java \u7ebf\u7a0b\u7684\u521b\u5efa"},"content":{"rendered":"<blockquote><p>by\u00a0emanjusaka from\u00a0<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=3bkRP9JNGabGhcu9G2i9uA%3D%3D.E5bd4Pjpp6psuRlNiXA%2BXuAvyzjGhfHyRTerpDJjM%2FjyXyxpF9EgZKl7b67p48X8\" rel=\"noopener noreferrer\">https:\/\/www.emanjusaka.top\/archives\/7<\/a>\u00a0\u5f7c\u5cb8\u82b1\u5f00\u53ef\u5948\u4f55  <br \/>\u672c\u6587\u6b22\u8fce\u5206\u4eab\u4e0e\u805a\u5408\uff0c\u5168\u6587\u8f6c\u8f7d\u8bf7\u7559\u4e0b\u539f\u6587\u5730\u5740\u3002<\/p><\/blockquote>\n<h2>\u524d\u8a00<\/h2>\n<p>\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\u6211\u4eec\u4e3a\u5565\u4e00\u822c\u9009\u7528\u521b\u5efa\u591a\u4e2a\u7ebf\u7a0b\u53bb\u5904\u7406\u4efb\u52a1\u800c\u4e0d\u662f\u521b\u5efa\u591a\u4e2a\u8fdb\u7a0b\u5462\uff1f\u8fd9\u662f\u56e0\u4e3a\u7ebf\u7a0b\u4e4b\u95f4\u5207\u6362\u7684\u5f00\u9500\u5c0f\uff0c\u9002\u7528\u4e8e\u4e00\u4e9b\u8981\u6c42\u540c\u65f6\u8fdb\u884c\u5e76\u4e14\u53c8\u8981\u5171\u4eab\u67d0\u4e9b\u53d8\u91cf\u7684\u5e76\u53d1\u64cd\u4f5c\u3002\u800c\u8fdb\u7a0b\u5219\u5177\u6709\u72ec\u7acb\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u72ec\u7acb\u7684\u4ee3\u7801\u548c\u6570\u636e\u7a7a\u95f4\uff0c\u7a0b\u5e8f\u4e4b\u95f4\u7684\u5207\u6362\u4f1a\u6709\u8f83\u5927\u7684\u5f00\u9500\u3002\u4e0b\u9762\u4ecb\u7ecd\u51e0\u79cd\u521b\u5efa\u7ebf\u7a0b\u7684\u65b9\u6cd5\uff0c\u5728\u8fd9\u4e4b\u524d\u6211\u4eec\u8fd8\u662f\u8981\u5148\u4e86\u89e3\u4e00\u4e0b\u4ec0\u4e48\u662f\u8fdb\u7a0b\u4ec0\u4e48\u662f\u7ebf\u7a0b\u3002<\/p>\n<h2>\u4e00\u3001\u4ec0\u4e48\u662f\u8fdb\u7a0b\u548c\u7ebf\u7a0b<\/h2>\n<p>\u7ebf\u7a0b\u662f\u8fdb\u7a0b\u4e2d\u7684\u4e00\u4e2a\u5b9e\u4f53\uff0c\u5b83\u672c\u8eab\u662f\u4e0d\u4f1a\u72ec\u7acb\u5b58\u5728\u7684\u3002\u8fdb\u7a0b\u662f\u7cfb\u7edf\u8fdb\u884c\u8d44\u6e90\u5206\u914d\u548c\u8c03\u5ea6\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u7ebf\u7a0b\u5219\u662f\u8fdb\u7a0b\u7684\u4e00\u4e2a\u6267\u884c\u8def\u5f84\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u81f3\u5c11\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u8fdb\u7a0b\u4e2d\u7684\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u7684\u8d44\u6e90\u3002<\/p>\n<p>\u8fdb\u7a0b\u548c\u7ebf\u7a0b\u7684\u5173\u7cfb\u56fe\u5982\u4e0b\uff1a<\/p>\n<p>\u200b<img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044203238\" alt=\"\u8fdb\u7a0b\u548c\u7ebf\u7a0b\" title=\"\u8fdb\u7a0b\u548c\u7ebf\u7a0b\">\u200b<\/p>\n<p>\u4ece\u4e0a\u9762\u7684\u56fe\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u6709\u591a\u4e2a\u7ebf\u7a0b\uff0c\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u7684\u5806\u548c\u65b9\u6cd5\u533a\u8d44\u6e90\uff0c\u4f46\u662f\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u7a0b\u5e8f\u8ba1\u6570\u5668\u548c\u6808\u533a\u57df\u3002\u5806\u662f\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u6700\u5927\u7684\u4e00\u5757\u5185\u5b58\uff0c\u5806\u662f\u88ab\u8fdb\u7a0b\u4e2d\u7684\u6240\u6709\u7ebf\u7a0b\u5171\u4eab\u7684\uff0c\u662f\u8fdb\u7a0b\u521b\u5efa\u65f6\u5206\u914d\u7684\uff0c\u5806\u91cc\u9762\u4e3b\u8981\u5b58\u653e\u4f7f\u7528new\u64cd\u4f5c\u521b\u5efa\u7684\u5bf9\u8c61\u5b9e\u4f8b\u3002\u65b9\u6cd5\u533a\u5219\u7528\u6765\u5b58\u653e JVM \u52a0\u8f7d\u7684\u7c7b\u3001\u5e38\u91cf\u53ca\u9759\u6001\u53d8\u91cf\u7b49\u4fe1\u606f\uff0c\u4e5f\u662f\u7ebf\u7a0b\u5171\u4eab\u7684\u3002<\/p>\n<h2>\u4e8c\u3001\u7ebf\u7a0b\u7684\u521b\u5efa<\/h2>\n<p>Java \u4e2d\u6709\u51e0\u79cd\u7ebf\u7a0b\u521b\u5efa\u7684\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u5b9e\u73b0 Runnable \u63a5\u53e3\u7684 run \u65b9\u6cd5<\/li>\n<li>\u7ee7\u627f Thread \u7c7b\u5e76\u91cd\u5199 run \u7684\u65b9\u6cd5<\/li>\n<\/ul>\n<p>&lt;!&#8212;-&gt;<\/p>\n<ul>\n<li>\u4f7f\u7528 FutureTask \u65b9\u5f0f<\/li>\n<li>\u4f7f\u7528\u7ebf\u7a0b\u6c60\u521b\u5efa<\/li>\n<\/ul>\n<h3>2.1\u3001\u5b9e\u73b0 Runnable \u63a5\u53e3\u7684 run \u65b9\u6cd5<\/h3>\n<pre><code>public static void main(String[] args) {\n        RunableTask task = new RunableTask();\n        new Thread(task).start();\n        new Thread(task).start();\n    }\n\n    public static class RunableTask implements Runnable {\n        @Override\n        public void run() {\n            System.out.println(&quot;I am a child thread&quot;);\n        }\n    }\n\/\/ \u8f93\u51fa\nI am a child thread\nI am a child thread<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2aRunableTask\u200b\u200b\u7c7b\uff0c\u8be5\u7c7b\u5b9e\u73b0\u4e86Runnable\u200b\u200b\u63a5\u53e3\uff0c\u5e76\u91cd\u5199\u4e86run()\u200b\u200b\u65b9\u6cd5\u3002\u5728run()\u200b\u200b\u65b9\u6cd5\u4e2d\uff0c\u5b83\u6253\u5370\u4e86\u4e00\u6761\u6d88\u606f\uff1a&#8221;I am a child thread&#8221;\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u662fmain()\u200b\u200b\u65b9\u6cd5\uff0c\u5b83\u662fJava\u7a0b\u5e8f\u7684\u5165\u53e3\u70b9\u3002\u5728main()\u200b\u200b\u65b9\u6cd5\u4e2d\uff0c\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2aRunableTask\u200b\u200b\u5bf9\u8c61\uff0c\u7136\u540e\u901a\u8fc7\u8c03\u7528Thread\u200b\u200b\u7c7b\u7684\u6784\u9020\u51fd\u6570\u5c06\u8be5\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9Thread\u200b\u200b\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff0c\u521b\u5efa\u4e86\u4e24\u4e2a\u65b0\u7684\u7ebf\u7a0b\u5bf9\u8c61\u3002\u8fd9\u4e24\u4e2a\u7ebf\u7a0b\u5bf9\u8c61\u5206\u522b\u4f7f\u7528start()\u200b\u200b\u65b9\u6cd5\u542f\u52a8\uff0c\u4ece\u800c\u4f7f\u5f97\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u80fd\u591f\u5e76\u53d1\u5730\u6267\u884c\u3002<\/p>\n<p>\u5f53\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u4f1a\u521b\u5efa\u4e24\u4e2a\u5b50\u7ebf\u7a0b\uff0c\u5b83\u4eec\u5c06\u5e76\u53d1\u5730\u6267\u884cRunableTask\u200b\u200b\u5bf9\u8c61\u7684run()\u200b\u200b\u65b9\u6cd5\u3002\u7531\u4e8e\u4e24\u4e2a\u7ebf\u7a0b\u662f\u540c\u65f6\u8fd0\u884c\u7684\uff0c\u56e0\u6b64\u5b83\u4eec\u53ef\u80fd\u4f1a\u4ea4\u66ff\u6267\u884crun()\u200b\u200b\u65b9\u6cd5\u4e2d\u7684\u4ee3\u7801\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7531\u4e8e\u7ebf\u7a0b\u8c03\u5ea6\u7684\u4e0d\u786e\u5b9a\u6027\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u60c5\u51b5\u4e4b\u4e00\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u7ebf\u7a0b\u5148\u6267\u884crun()\u200b\u200b\u65b9\u6cd5\uff0c\u6253\u5370\u51fa&#8221;I am a child thread&#8221;\u3002<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u7ebf\u7a0b\u5148\u6267\u884crun()\u200b\u200b\u65b9\u6cd5\uff0c\u6253\u5370\u51fa&#8221;I am a child thread&#8221;\u3002<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u7ebf\u7a0b\u7684\u6267\u884c\u987a\u5e8f\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u6240\u4ee5\u6bcf\u6b21\u8fd0\u884c\u7a0b\u5e8f\u65f6\uff0c\u8f93\u51fa\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h3>2.2\u3001\u7ee7\u627f Thread \u7c7b\u65b9\u5f0f\u7684\u5b9e\u73b0<\/h3>\n<pre><code>public static void main(String[] args) {\n        MyThread thread = new MyThread();\n        thread.start();\n    }\n\n    \/\/\u7ee7\u627fThread\u7c7b\u5e76\u91cd\u5199run\u65b9\u6cd5\n    public static class MyThread extends Thread {\n        @Override\n        public void run() {\n            System.out.println(&quot;I am a child thread&quot;);\n        }\n    }<\/code><\/pre>\n<p>\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aMyThread\u200b\u200b\u7684\u7c7b\uff0c\u8be5\u7c7b\u7ee7\u627f\u4e86Thread\u200b\u200b\u7c7b\uff0c\u5e76\u91cd\u5199\u4e86run()\u200b\u200b\u65b9\u6cd5\u3002<\/p>\n<h3>2.3\u3001\u7528 FutureTask \u7684\u65b9\u5f0f<\/h3>\n<pre><code> public static void main(String[] args) throws InterruptedException {\n        \/\/ \u521b\u5efa\u5f02\u6b65\u4efb\u52a1\n        FutureTask&lt;String&gt; futureTask = new FutureTask&lt;&gt;(new CallerTask());\n        \/\/\u542f\u52a8\u7ebf\u7a0b\n        new Thread(futureTask).start();\n        try {\n            \/\/\u7b49\u5f85\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\uff0c\u5e76\u8fd4\u56de\u7ed3\u679c\n            String result = futureTask.get();\n            System.out.println(result);\n        } catch (ExecutionException e) {\n            e.printStackTrace();\n        }\n    }\n\n    \/\/\u521b\u5efa\u4efb\u52a1\u7c7b\uff0c\u7c7b\u4f3cRunable\n    public static class CallerTask implements Callable&lt;String&gt; {\n        @Override\n        public String call() throws Exception {\n            return &quot;hello emanjusaka&quot;;\n        }\n    }<\/code><\/pre>\n<p>\u4e0a\u9762\u4f7f\u7528\u4e86FutureTask\u200b\u200b\u548cCallable\u200b\u200b\u63a5\u53e3\u6765\u5b9e\u73b0\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u3002\u9996\u5148\uff0c\u5728main()\u200b\u200b\u65b9\u6cd5\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2aFutureTask\u200b\u200b\u5bf9\u8c61\uff0c\u5e76\u5c06\u4e00\u4e2a\u533f\u540d\u5185\u90e8\u7c7bCallerTask\u200b\u200b\u7684\u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5b83\u3002\u8fd9\u4e2a\u533f\u540d\u5185\u90e8\u7c7b\u5b9e\u73b0\u4e86Callable\u200b\u200b\u63a5\u53e3\uff0c\u5e76\u91cd\u5199\u4e86call()\u200b\u200b\u65b9\u6cd5\u3002\u5728call()\u200b\u200b\u65b9\u6cd5\u4e2d\uff0c\u5b83\u8fd4\u56de\u4e86\u4e00\u4e2a\u5b57\u7b26\u4e32&#8221;hello emanjusaka&#8221;\u3002\u63a5\u4e0b\u6765\uff0c\u901a\u8fc7\u8c03\u7528FutureTask\u200b\u200b\u5bf9\u8c61\u7684start()\u200b\u200b\u65b9\u6cd5\u542f\u52a8\u4e86\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\uff0c\u8be5\u7ebf\u7a0b\u4f1a\u6267\u884cCallerTask\u200b\u200b\u5bf9\u8c61\u7684call()\u200b\u200b\u65b9\u6cd5\u3002\u7531\u4e8estart()\u200b\u200b\u65b9\u6cd5\u662f\u5f02\u6b65\u6267\u884c\u7684\uff0c\u4e3b\u7ebf\u7a0b\u4f1a\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u7684\u4ee3\u7801\u3002\u7136\u540e\uff0c\u4f7f\u7528futureTask.get()\u200b\u200b\u65b9\u6cd5\u6765\u7b49\u5f85\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\u3002\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\uff0c\u76f4\u5230\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u5e76\u8fd4\u56de\u7ed3\u679c\u3002\u5982\u679c\u4efb\u52a1\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u4e86\u5f02\u5e38\uff0c\u53ef\u4ee5\u901a\u8fc7\u6355\u83b7ExecutionException\u200b\u200b\u6765\u5904\u7406\u5f02\u5e38\u60c5\u51b5\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u5f02\u6b65\u4efb\u52a1\u7684\u6267\u884c\u662f\u5e76\u53d1\u8fdb\u884c\u7684\uff0c\u56e0\u6b64\u8f93\u51fa\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u53e6\u5916\uff0c\u7531\u4e8eFutureTask\u200b\u200b\u548cCallable\u200b\u200b\u63a5\u53e3\u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u548c\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u56e0\u6b64\u5728\u9700\u8981\u5904\u7406\u8fd4\u56de\u7ed3\u679c\u6216\u5904\u7406\u5f02\u5e38\u7684\u60c5\u51b5\u4e0b\uff0c\u5b83\u4eec\u6bd4\u7ee7\u627fThread\u200b\u200b\u7c7b\u5e76\u91cd\u5199run()\u200b\u200b\u65b9\u6cd5\u7684\u65b9\u5f0f\u66f4\u52a0\u65b9\u4fbf\u548c\u53ef\u9760\u3002<\/p>\n<h3>2.4\u3001\u4f7f\u7528\u7ebf\u7a0b\u6c60<\/h3>\n<ul>\n<li>\n<p>Executors<\/p>\n<pre><code>package top.emanjusaka;\n\nimport java.util.concurrent.ExecutorService;\nimport java.util.concurrent.Executors;\n\npublic class Main {\n    public static void main(String[] args) {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u7ebf\u7a0b\u6c60\uff0c\u5927\u5c0f\u4e3a5\n        ExecutorService executor = Executors.newFixedThreadPool(5);\n\n        \/\/ \u63d0\u4ea410\u4e2a\u4efb\u52a1\u5230\u7ebf\u7a0b\u6c60\u4e2d\u6267\u884c\n        for (int i = 0; i &lt; 10; i++) {\n            Runnable worker = new WorkerThread(&quot;&quot; + i);\n            executor.execute(worker);\n        }\n\n        \/\/ \u5173\u95ed\u7ebf\u7a0b\u6c60\n        executor.shutdown();\n        while (!executor.isTerminated()) {\n        }\n\n        System.out.println(&quot;\u6240\u6709\u4efb\u52a1\u5df2\u5b8c\u6210&quot;);\n    }\n}\n\nclass WorkerThread implements Runnable {\n    private String command;\n\n    public WorkerThread(String s) {\n        this.command = s;\n    }\n\n    @Override\n    public void run() {\n        System.out.println(Thread.currentThread().getName() + &quot; \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a &quot; + command);\n        processCommand();\n        System.out.println(Thread.currentThread().getName() + &quot; \u5b8c\u6210\u4efb\u52a1\uff1a &quot; + command);\n    }\n\n    private void processCommand() {\n        try {\n            Thread.sleep(5000);\n        } catch (InterruptedException e) {\n            e.printStackTrace();\n        }\n    }\n}\n\/\/ \u8f93\u51fa\npool-1-thread-1 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 0\npool-1-thread-2 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 1\npool-1-thread-3 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 2\npool-1-thread-4 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 3\npool-1-thread-5 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 4\npool-1-thread-2 \u5b8c\u6210\u4efb\u52a1\uff1a 1\npool-1-thread-4 \u5b8c\u6210\u4efb\u52a1\uff1a 3\npool-1-thread-2 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 5\npool-1-thread-4 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 6\npool-1-thread-1 \u5b8c\u6210\u4efb\u52a1\uff1a 0\npool-1-thread-3 \u5b8c\u6210\u4efb\u52a1\uff1a 2\npool-1-thread-5 \u5b8c\u6210\u4efb\u52a1\uff1a 4\npool-1-thread-3 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 8\npool-1-thread-1 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 7\npool-1-thread-5 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a 9\npool-1-thread-2 \u5b8c\u6210\u4efb\u52a1\uff1a 5\npool-1-thread-4 \u5b8c\u6210\u4efb\u52a1\uff1a 6\npool-1-thread-1 \u5b8c\u6210\u4efb\u52a1\uff1a 7\npool-1-thread-3 \u5b8c\u6210\u4efb\u52a1\uff1a 8\npool-1-thread-5 \u5b8c\u6210\u4efb\u52a1\uff1a 9\n\u6240\u6709\u4efb\u52a1\u5df2\u5b8c\u6210<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u5927\u5c0f\u4e3a5\u7684\u7ebf\u7a0b\u6c60\u3002\u7136\u540e\uff0c\u6211\u4eec\u63d0\u4ea4\u4e8610\u4e2a\u4efb\u52a1\u5230\u7ebf\u7a0b\u6c60\u4e2d\u6267\u884c\u3002\u6bcf\u4e2a\u4efb\u52a1\u90fd\u662f\u4e00\u4e2a\u5b9e\u73b0\u4e86Runnable\u63a5\u53e3\u7684WorkerThread\u5bf9\u8c61\u3002\u6700\u540e\uff0c\u6211\u4eec\u5173\u95ed\u7ebf\u7a0b\u6c60\u5e76\u7b49\u5f85\u6240\u6709\u4efb\u52a1\u5b8c\u6210\u3002<\/p>\n<p>\u963f\u91cc\u5df4\u5df4\u5f00\u53d1\u89c4\u8303\u5efa\u8bae\u4f7f\u7528ThreadPoolExecutor\u6765\u521b\u5efa\u7ebf\u7a0b\u6c60\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528Executors\u3002\u8fd9\u6837\u505a\u7684\u539f\u56e0\u662f\uff0cExecutors\u521b\u5efa\u7684\u7ebf\u7a0b\u6c60\u53ef\u80fd\u4f1a\u5b58\u5728\u8d44\u6e90\u8017\u5c3d\u7684\u98ce\u9669\uff0c\u800cThreadPoolExecutor\u5219\u53ef\u4ee5\u66f4\u597d\u5730\u63a7\u5236\u7ebf\u7a0b\u6c60\u7684\u8fd0\u884c\u89c4\u5219\uff0c\u89c4\u907f\u8d44\u6e90\u8017\u5c3d\u7684\u98ce\u9669 \u3002<\/p>\n<ul>\n<li>\n<p>ThreadPoolExecutor<\/p>\n<pre><code>package top.emanjusaka;\n\nimport java.util.concurrent.LinkedBlockingQueue;\nimport java.util.concurrent.ThreadPoolExecutor;\nimport java.util.concurrent.TimeUnit;\n\npublic class Main {\n    public static void main(String[] args) {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u7ebf\u7a0b\u6c60\uff0c\u5927\u5c0f\u4e3a5\n        ThreadPoolExecutor executor = new ThreadPoolExecutor(5, 10, 200, TimeUnit.MILLISECONDS, new LinkedBlockingQueue&lt;Runnable&gt;());\n\n        for (int i = 0; i &lt; 10; i++) {\n            Runnable worker = new WorkerThread(&quot;&quot; + i);\n            executor.execute(worker);\n        }\n\n        \/\/ \u5173\u95ed\u7ebf\u7a0b\u6c60\n        executor.shutdown();\n        try {\n            executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);\n        } catch (InterruptedException e) {\n            e.printStackTrace();\n        }\n\n        System.out.println(&quot;\u6240\u6709\u4efb\u52a1\u5df2\u5b8c\u6210&quot;);\n    }\n}\n\nclass WorkerThread implements Runnable {\n    private String command;\n\n    public WorkerThread(String s) {\n        this.command = s;\n    }\n\n    @Override\n    public void run() {\n        System.out.println(Thread.currentThread().getName() + &quot; \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a&quot; + command);\n        processCommand();\n        System.out.println(Thread.currentThread().getName() + &quot; \u5b8c\u6210\u4efb\u52a1\uff1a&quot; + command);\n    }\n\n    private void processCommand() {\n        try {\n            Thread.sleep(5000);\n        } catch (InterruptedException e) {\n            e.printStackTrace();\n        }\n    }\n}\n\n\/\/ \u8f93\u51fa\npool-1-thread-1 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a0\npool-1-thread-3 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a2\npool-1-thread-2 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a1\npool-1-thread-4 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a3\npool-1-thread-5 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a4\npool-1-thread-2 \u5b8c\u6210\u4efb\u52a1\uff1a1\npool-1-thread-3 \u5b8c\u6210\u4efb\u52a1\uff1a2\npool-1-thread-5 \u5b8c\u6210\u4efb\u52a1\uff1a4\npool-1-thread-3 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a5\npool-1-thread-4 \u5b8c\u6210\u4efb\u52a1\uff1a3\npool-1-thread-1 \u5b8c\u6210\u4efb\u52a1\uff1a0\npool-1-thread-4 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a8\npool-1-thread-2 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a7\npool-1-thread-5 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a6\npool-1-thread-1 \u5f00\u59cb\u5904\u7406\u4efb\u52a1\uff1a9\npool-1-thread-4 \u5b8c\u6210\u4efb\u52a1\uff1a8\npool-1-thread-3 \u5b8c\u6210\u4efb\u52a1\uff1a5\npool-1-thread-2 \u5b8c\u6210\u4efb\u52a1\uff1a7\npool-1-thread-1 \u5b8c\u6210\u4efb\u52a1\uff1a9\npool-1-thread-5 \u5b8c\u6210\u4efb\u52a1\uff1a6\n\u6240\u6709\u4efb\u52a1\u5df2\u5b8c\u6210<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u5927\u5c0f\u4e3a5\u7684\u7ebf\u7a0b\u6c60\uff0c\u5176\u4e2d\u6838\u5fc3\u7ebf\u7a0b\u6570\u4e3a5\uff0c\u6700\u5927\u7ebf\u7a0b\u6570\u4e3a10\uff0c\u7a7a\u95f2\u7ebf\u7a0b\u5b58\u6d3b\u65f6\u95f4\u4e3a200\u6beb\u79d2\uff0c\u5de5\u4f5c\u961f\u5217\u4e3aLinkedBlockingQueue\u3002\u7136\u540e\uff0c\u6211\u4eec\u63d0\u4ea4\u4e8610\u4e2a\u4efb\u52a1\u5230\u7ebf\u7a0b\u6c60\u4e2d\u6267\u884c\u3002\u6700\u540e\uff0c\u6211\u4eec\u5173\u95ed\u7ebf\u7a0b\u6c60\u5e76\u7b49\u5f85\u6240\u6709\u4efb\u52a1\u5b8c\u6210\u3002<\/p>\n<p>ThreadPoolExecutor\u7684\u6784\u9020\u51fd\u6570\u6709\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<ol>\n<li>corePoolSize\uff1a\u6838\u5fc3\u7ebf\u7a0b\u6570\uff0c\u5373\u7ebf\u7a0b\u6c60\u4e2d\u59cb\u7ec8\u4fdd\u6301\u6d3b\u8dc3\u7684\u7ebf\u7a0b\u6570\u3002<\/li>\n<li>maximumPoolSize\uff1a\u6700\u5927\u7ebf\u7a0b\u6570\uff0c\u5373\u7ebf\u7a0b\u6c60\u4e2d\u5141\u8bb8\u7684\u6700\u5927\u7ebf\u7a0b\u6570\u3002\u5f53\u5de5\u4f5c\u961f\u5217\u6ee1\u4e86\u4e4b\u540e\uff0c\u7ebf\u7a0b\u6c60\u4f1a\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u4efb\u52a1\uff0c\u76f4\u5230\u8fbe\u5230\u6700\u5927\u7ebf\u7a0b\u6570\u3002<\/li>\n<li>keepAliveTime\uff1a\u7a7a\u95f2\u7ebf\u7a0b\u5b58\u6d3b\u65f6\u95f4\uff0c\u5373\u5f53\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u6570\u91cf\u8d85\u8fc7\u6838\u5fc3\u7ebf\u7a0b\u6570\u65f6\uff0c\u591a\u4f59\u7684\u7a7a\u95f2\u7ebf\u7a0b\u5728\u7b49\u5f85\u65b0\u4efb\u52a1\u7684\u6700\u957f\u65f6\u95f4\u3002\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u95f4\u540e\uff0c\u7a7a\u95f2\u7ebf\u7a0b\u5c06\u88ab\u9500\u6bc1\u3002<\/li>\n<li>unit\uff1akeepAliveTime\u7684\u65f6\u95f4\u5355\u4f4d\uff0c\u4f8b\u5982TimeUnit.SECONDS\u8868\u793a\u79d2\uff0cTimeUnit.MILLISECONDS\u8868\u793a\u6beb\u79d2\u3002<\/li>\n<li>workQueue\uff1a\u5de5\u4f5c\u961f\u5217\uff0c\u7528\u4e8e\u5b58\u653e\u5f85\u5904\u7406\u7684\u4efb\u52a1\u3002\u5e38\u7528\u7684\u6709ArrayBlockingQueue\u3001LinkedBlockingQueue\u548cSynchronousQueue\u7b49\u3002<\/li>\n<li>threadFactory\uff1a\u7ebf\u7a0b\u5de5\u5382\uff0c\u7528\u4e8e\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u3002\u53ef\u4ee5\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u7684\u540d\u79f0\u3001\u4f18\u5148\u7ea7\u7b49\u5c5e\u6027\u3002<\/li>\n<li>handler\uff1a\u62d2\u7edd\u7b56\u7565\uff0c\u5f53\u5de5\u4f5c\u961f\u5217\u6ee1\u4e86\u4e14\u7ebf\u7a0b\u6c60\u5df2\u6ee1\u65f6\uff0c\u7ebf\u7a0b\u6c60\u5982\u4f55\u5904\u7406\u65b0\u63d0\u4ea4\u7684\u4efb\u52a1\u3002\u5e38\u7528\u7684\u6709AbortPolicy\uff08\u629b\u51fa\u5f02\u5e38\uff09\u3001DiscardPolicy\uff08\u4e22\u5f03\u4efb\u52a1\uff09\u548cDiscardOldestPolicy\uff08\u4e22\u5f03\u961f\u5217\u4e2d\u6700\u65e7\u7684\u4efb\u52a1\uff09\u3002<\/li>\n<li>executorListeners\uff1a\u76d1\u542c\u5668\uff0c\u7528\u4e8e\u76d1\u542c\u7ebf\u7a0b\u6c60\u7684\u72b6\u6001\u53d8\u5316\u3002\u5e38\u7528\u7684\u6709ThreadPoolExecutor.AbortPolicy\u3001ThreadPoolExecutor.CallerRunsPolicy\u548cThreadPoolExecutor.DiscardPolicy\u3002<\/li>\n<\/ol>\n<h2>\u4e09\u3001\u603b\u7ed3<\/h2>\n<p>\u4f7f\u7528\u7ee7\u627f\u65b9\u5f0f\u7684\u597d\u5904\u662f\u65b9\u4fbf\u4f20\u53c2\uff0c\u4f60\u53ef\u4ee5\u5728\u5b50\u7c7b\u91cc\u9762\u6dfb\u52a0\u6210\u5458\u53d8\u91cf\uff0c\u901a\u8fc7set\u65b9\u6cd5\u8bbe\u7f6e\u53c2\u6570\u6216\u8005\u901a\u8fc7\u6784\u9020\u51fd\u6570\u8fdb\u884c\u4f20\u9012\uff0c\u800c\u5982\u679c\u4f7f\u7528Runnable\u65b9\u5f0f\uff0c\u5219\u53ea\u80fd\u4f7f\u7528\u4e3b\u7ebf\u7a0b\u91cc\u9762\u88ab\u58f0\u660e\u4e3afinal\u7684\u53d8\u91cf\u3002\u4e0d\u597d\u7684\u5730\u65b9\u662fJava\u4e0d\u652f\u6301\u591a\u7ee7\u627f\uff0c\u5982\u679c\u7ee7\u627f\u4e86Thread\u7c7b\uff0c\u90a3\u4e48\u5b50\u7c7b\u4e0d\u80fd\u518d\u7ee7\u627f\u5176\u4ed6\u7c7b\uff0c\u800cRunable\u5219\u6ca1\u6709\u8fd9\u4e2a\u9650\u5236\u3002\u524d\u4e24\u79cd\u65b9\u5f0f\u90fd\u6ca1\u529e\u6cd5\u62ff\u5230\u4efb\u52a1\u7684\u8fd4\u56de\u7ed3\u679c\uff0c\u4f46\u662fFuturetask\u65b9\u5f0f\u53ef\u4ee5\u3002<\/p>\n<p>\u4f7f\u7528Callable\u548cFuture\u521b\u5efa\u7ebf\u7a0b\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5c06\u7ebf\u7a0b\u4f5c\u4e3a\u4efb\u52a1\u63d0\u4ea4\u7ed9\u7ebf\u7a0b\u6c60\u6267\u884c\uff0c\u800c\u4e14\u53ef\u4ee5\u83b7\u53d6\u5230\u7ebf\u7a0b\u7684\u6267\u884c\u7ed3\u679c\u3002\u4f46\u662f\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u7ebf\u7a0b\u629b\u51fa\u4e86\u5f02\u5e38\uff0c\u90a3\u4e48\u5728\u4e3b\u7ebf\u7a0b\u4e2d\u662f\u65e0\u6cd5\u83b7\u53d6\u5230\u7684\u3002\u4f7f\u7528\u7ebf\u7a0b\u6c60\u3002\u7ebf\u7a0b\u6c60\u662f\u4e00\u79cd\u7ba1\u7406\u7ebf\u7a0b\u7684\u673a\u5236\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u7ebf\u7a0b\u7684\u6570\u91cf\u548c\u590d\u7528\u7ebf\u7a0b\uff0c\u907f\u514d\u4e86\u9891\u7e41\u5730\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\u5e26\u6765\u7684\u6027\u80fd\u5f00\u9500\u3002<\/p>\n<h2>\u53c2\u8003\u8d44\u6599<\/h2>\n<ol>\n<li>\u300aJava\u5e76\u53d1\u7f16\u7a0b\u4e4b\u7f8e\u300b<\/li>\n<\/ol>\n<blockquote>\n<p>\u672c\u6587\u539f\u521b\uff0c\u624d\u758f\u5b66\u6d45\uff0c\u5982\u6709\u7eb0\u6f0f\uff0c\u6b22\u8fce\u6307\u6b63\u3002\u5c0a\u8d35\u7684\u670b\u53cb\uff0c\u5982\u679c\u672c\u6587\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\uff0c\u6b22\u8fce\u70b9\u8d5e\uff0c\u5e76\u671f\u5f85\u60a8\u7684\u53cd\u9988\uff0c\u4ee5\u4fbf\u4e8e\u4e0d\u65ad\u4f18\u5316\u3002<\/p>\n<p>\u539f\u6587\u5730\u5740\uff1a\u00a0<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=ibHvhPTraeDLp5C6uzHOCg%3D%3D.cFLt24PKVCxwBMa%2FihQyNZIrO%2FMRCPN%2BjAwYXOvQ9raruekjUMU5%2Bp0w%2FrOZkAGR\" rel=\"noopener noreferrer\">https:\/\/www.emanjusaka.top\/archives\/7<\/a><\/p>\n<p>\u5fae\u4fe1\u516c\u4f17\u53f7\uff1aemanjusaka\u7684\u7f16\u7a0b\u6808<\/p>\n<\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044203236\">https:\/\/segmentfault.com\/a\/1190000044203236<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>by\u00a0emanjusaka from\u00a0https:\/\/www.emanjusaka.top\/archives\/ [&hellip;]<\/p>\n","protected":false},"author":1,"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-10008262","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\/10008262","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008262"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008262\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}