{"id":10008289,"date":"2023-09-19T19:05:58","date_gmt":"2023-09-19T11:05:58","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008289"},"modified":"2023-09-19T19:05:58","modified_gmt":"2023-09-19T11:05:58","slug":"jdk8%e5%8d%87%e7%ba%a7jdk11%e6%9c%80%e5%85%a8%e5%ae%9e%e8%b7%b5%e5%b9%b2%e8%b4%a7%e6%9d%a5%e4%ba%86-%e4%ba%ac%e4%b8%9c%e4%ba%91%e6%8a%80%e6%9c%af%e5%9b%a2%e9%98%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008289","title":{"rendered":"JDK8\u5347\u7ea7JDK11\u6700\u5168\u5b9e\u8df5\u5e72\u8d27\u6765\u4e86 | \u4eac\u4e1c\u4e91\u6280\u672f\u56e2\u961f"},"content":{"rendered":"<h2><strong>1\u3001\u524d\u8a00<\/strong><\/h2>\n<p>\u622a\u81f3\u76ee\u524d\uff082023\u5e74\uff09\uff0cJava8\u53d1\u5e03\u81f3\u4eca\u5df2\u67099\u5e74\uff0c2018\u5e749\u670825\u65e5\uff0cOracle\u53d1\u5e03\u4e86Java11\uff0c\u8fd9\u662fJava8\u4e4b\u540e\u7684\u9996\u4e2aLTS\u7248\u672c\u3002\u90a3\u4e48\u4eceJDK8\u5230JDK11\uff0c\u5230\u5e95\u5e26\u6765\u4e86\u54ea\u4e9b\u7279\u6027\u5462\uff1f\u503c\u5f97\u6211\u4eec\u5347\u7ea7\u5417\uff1f\u800c\u4e14\u5347\u7ea7\u8fc7\u7a0b\u4f1a\u9047\u5230\u54ea\u4e9b\u95ee\u9898\u5462\uff1f\u5e26\u7740\u8fd9\u4e9b\u95ee\u9898\uff0c\u672c\u7bc7\u6587\u7ae0\u5c06\u5e26\u6765\u5b8c\u6574\u7684JDK8\u5347\u7ea7JDK11\u6700\u5168\u5b9e\u8df5\u3002<\/p>\n<h2><strong>2\u3001\u4e3a\u4ec0\u4e48\u5347\u7ea7JDK11<\/strong><\/h2>\n<p><strong>1\uff09\u6027\u80fd\u63d0\u5347<\/strong><\/p>\n<p>\u66f4\u597d\u7684\u5783\u573e\u6536\u673a\u5236\u3001\u66f4\u5feb\u7684\u7c7b\u52a0\u8f7d\u5668, \u52a0\u5feb\u5e94\u7528\u7a0b\u5e8f\u7684\u8fd0\u884c\u901f\u5ea6\u3002\u7efc\u5408\u8bc4\u4f30\uff0c\u4eceJava 8 \u5347\u7ea7\u5230 Java 11\uff0c<strong>G1GC\u5e73\u5747\u901f\u5ea6\u63d0\u534716.1%\uff0cParallelGC\u4e3a4.5%<\/strong>\uff08<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=PNqoI8AqSU5ZBQQ2PrSvJA%3D%3D.Qm%2FcVI22I2YK%2FRSdak7T3tor3PoLcfHyFgVRGmeu0fkH8nHL0Iy%2BpVvFYzXz3oNJx9tL7I8NN1Miij3PAdGyDVLyuyA%2FTKnfE6oU0KF8LnI%3D\" rel=\"noopener noreferrer\">\u57fa\u4e8eOptaPlanner\u7684\u7528\u4f8b\u57fa\u51c6\u6d4b\u8bd5\u8868\u660e\uff09<\/a><\/p>\n<p>2\uff09<strong>\u7279\u6027\u548c\u6539\u8fdb<\/strong><\/p>\n<p>\u5c40\u90e8\u53d8\u7c7b\u578b\u63a8\u65ad\u3001\u65b0\u7684 API\u3001HTTP\/2\u5ba2\u6237\u7aef\u3001Lambda\u8868\u8fbe\u5f0f\u7684\u65b0\u7279\u6027\u7b49\uff0c\u8fd9\u4e9b\u65b0\u7279\u6027\u53ef\u4ee5\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002<\/p>\n<p>3\uff09<strong>\u652f\u6301\u6700\u65b0\u7684\u6280\u672f\u548c\u6846\u67b6<\/strong><\/p>\n<p>\u8bb8\u591a\u65b0\u7684\u6280\u672f\u548c\u6846\u67b6\u5df2\u7ecf\u6216\u5373\u5c06\u5f00\u59cb\u4f9d\u8d56\u4e8eJDK11\u6216\u4ee5\u4e0a\u7248\u672c\uff0c\u5347\u7ea7\u540e\u53ef\u4ee5\u4fdd\u8bc1\u5e94\u7528\u7a0b\u5e8f\u80fd\u591f\u5206\u5229\u7528\u8fd9\u4e9b\u65b0\u7684\u6280\u672f\u548c\u6846\u67b6\u3002<\/p>\n<p>4\uff09<strong>\u957f\u671f\u652f\u6301\u7248\u672c<\/strong><\/p>\n<p>JDK11\u662fOracle\u5b98\u65b9\u53d1\u5e03\u7684\u4e00\u4e2a\u957f\u671f\u652f\u6301\uff08LTS\uff09\uff0c\u610f\u5473\u7740\u5b83\u5c06\u83b7\u5f97\u957f\u671f\u7684\u66f4\u65b0\u548c\u652f\u6301\uff0c\u6709\u52a9\u4e8e\u4fdd\u6301\u7528\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>5\uff09<strong>\u884c\u4e1a\u8d8b\u52bf<\/strong><\/p>\n<p>\u6570\u636e\u6765\u81ea <a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=X%2FLC2QmBWpDL9tKmGzoDlg%3D%3D.O611m%2BDALqjFtKkht2WBGw9jdHUdctIMyD1%2Fgq%2BhEseY4JA1%2FoimsnXeNHflZsXGfOH1NfqjKHeMsmTDTz%2Beos4%2B7dVgsVWH67xw5lU2veY%3D\" rel=\"noopener noreferrer\">New Relic<\/a> \u57282023\u5e741\u6708\u53d1\u5e03\u7684Java\u751f\u6001\u62a5\u544a\uff0c\u4ece\u4e0b\u56fe\u53ef\u4ee5\u770b\u51fa\uff1a<\/p>\n<ul>\n<li>\u76ee\u524d\u5e02\u9762\u4e0a\u6709 <strong>\u8d85\u8fc7 56%\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u4e86JDK 11\uff0cJava 8 \u7684\u4f7f\u7528\u4ece2020\u5e74\u768484%\u964d\u4f4e\u5230\u4e86\u73b0\u5728\u768432%\u5de6\u53f3<\/strong>\u3002\u5927\u90e8\u5206\u516c\u53f8\u5728\u8fd9\u4e09\u5e74\u4e4b\u95f4\u90fd\u5347\u7ea7\u5230\u4e86JDK 11 \u6216\u8005 JDK 17\u8fd9\u4e24\u4e2aLTS\u7248\u672c\u4e0a\u9762\u3002<\/li>\n<li>\u5783\u573e\u6536\u96c6\u5668\u4f7f\u7528\u60c5\u51b5\u6765\u770b\uff0cJDK11\u7248\u672c\u53ca\u4ee5\u4e0a <strong>G1\u4f7f\u7528\u7387\u6700\u9ad8\uff0c\u5360\u6bd4\u9ad8\u8fbe65%<\/strong><\/li>\n<\/ul>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231063\" alt=\"\" title=\"\"><\/p>\n<h2><strong>3\u3001\u5347\u7ea7\u540eGC\u6548\u679c<\/strong><\/h2>\n<p><strong>\u5148\u7ed9\u51fa\u7ed3\u8bba\uff1a<\/strong><\/p>\n<ol>\n<li>JDK11\u76f8\u5bf9\u4e8eJDK8\uff0c<strong>\u6240\u6709\u5783\u573e\u56de\u6536\u5668\u7684\u6027\u80fd\u90fd\u6709\u63d0\u5347\uff0c\u7279\u522b\u662f\u5927\u5185\u5b58\u673a\u5668\u4e0bG1\u7684\u63d0\u5347\u6700\u660e\u663e<\/strong><\/li>\n<li><strong>8G\u5185\u5b58\u4ee5\u4e0b\u7684\u673a\u5668\uff0c\u63a8\u8350\u4f7f\u7528Parallel GC<\/strong>\uff0c\u5982\u679c\u7279\u522b\u8ffd\u6c42\u4f4e\u5ef6\u8fdf\uff0c\u9009\u62e9\u727a\u7272\u541e\u5410\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528G1\uff0c\u5e76\u8bbe\u7f6e\u671f\u671b\u7684\u6700\u5927\u5783\u573e\u56de\u6536\u505c\u987f\u65f6\u95f4\u6765\u63a7\u5236<\/li>\n<li>8G\u53ca\u4ee5\u4e0a\u7684\u5927\u5185\u5b58\u673a\u5668\uff0c\u63a8\u8350\u4f7f\u7528G1 4\u3001<strong>\u4e0d\u63a8\u8350\u4f7f\u7528CMS<\/strong>\uff0c\u5347\u7ea7\u540e\u4ece\u5404\u9879\u6570\u636e\u6765\u770b\uff0cCMS\u6536\u96c6\u5668\u90fd\u4e0d\u5982G1<\/li>\n<\/ol>\n<p><strong>\u6211\u5728JDOS\u5e73\u53f0\u4e0a\u9009\u62e9\u4e86\u4e0d\u540c\u914d\u7f6e\u7684\u673a\u5668\uff082C4G\u30014C8G\u30018C16G\uff09\uff0c\u5e76\u5206\u522b\u4f7f\u7528JDK8\u548cJDK11\u8fdb\u884c\u90e8\u7f72\u548c\u538b\u6d4b\u3002<\/strong><\/p>\n<p>\u6574\u4e2a\u538b\u6d4b\u8fc7\u7a0b\u9650\u65f660\u5206\u949f\uff0c\u7528180\u4e2a\u865a\u62df\u7528\u6237\u5e76\u53d1\u8bf7\u6c42\u4e00\u4e2a\u63a5\u53e3\uff0c\u6bcf\u6b21\u63a5\u53e3\u8bf7\u6c42\u90fd\u521b\u5efa512Kb\u7684\u6570\u636e\u3002\u6700\u7ec8\u4ea7\u51fa\u4e0d\u540cGC\u56de\u6536\u5668\u7684\u5404\u9879\u6307\u6807\u6570\u636e\uff0c\u6765\u5206\u6790GC\u7684\u6027\u80fd\u63d0\u5347\u6548\u679c\u3002<\/p>\n<p><strong>\u4ee5\u4e0b\u662f\u538b\u6d4b\u7684\u6027\u80fd\u60c5\u51b5\uff1a<\/strong><\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231065\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>* \u4e0a\u9762\u7ed9\u51fa\u7684GC\u5347\u7ea7\u6548\u679c\uff0c\u91c7\u7528\u7684\u662f\u9ed8\u8ba4\u7684\u914d\u7f6e\uff0c\u6ca1\u6709\u505a\u4efb\u4f55\u4f18\u5316\uff0c\u53ea\u63d0\u4f9b\u53c2\u8003\u3002\u771f\u6b63\u7684GC\u8c03\u4f18\u662f\u4e2a\u6280\u672f\u6d3b\uff0c\u9700\u8981\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u3001\u673a\u5668\u914d\u7f6e\u548c\u5b9e\u9645\u538b\u6d4b\u6548\u679c\u7b49\u7efc\u5408\u8bc4\u4f30\u6765\u9009\u51fa\u6700\u5408\u9002\u7684GC\u5783\u573e\u56de\u6536\u5668\u3002<\/p>\n<p>* \u4e0d\u540c\u5783\u573e\u56de\u6536\u5668\u7684\u7279\u70b9\uff1a<\/p>\n<ol>\n<li>Parallel GC &#8211; JDK 8\u53ca\u4ee5\u4e0b\u7248\u672c\u7684\u9ed8\u8ba4\u6536\u96c6\u5668\uff0c\u5173\u6ce8\u541e\u5410\u91cf\uff0c\u5c1d\u8bd5\u5728\u6700\u5c0f\u5ef6\u8fdf\u7684\u60c5\u51b5\u4e0b\u5c3d\u5feb\u5b8c\u6210\u5de5\u4f5c\u5e76\u63d0\u9ad8\u541e\u5410\u91cf\u3002<\/li>\n<li>CMS &#8211; \u4e00\u4e2a\u8001\u5e74\u4ee3\u6536\u96c6\u5668\uff0c\u57fa\u4e8e\u6807\u8bb0-\u6e05\u9664\u7b97\u6cd5\u5b9e\u73b0\uff0c\u5173\u6ce8\u5ef6\u8fdf\uff0c\u4ee5\u6700\u77ed\u56de\u6536\u505c\u987f\u65f6\u95f4\u4e3a\u76ee\u6807<\/li>\n<li>Garbage First\uff08G1\uff09- JDK 9\u4ee5\u540e\u7684\u9ed8\u8ba4\u6536\u96c6\u5668\uff0cG1 \u5173\u6ce8\u603b\u4f53\u7684\u6027\u80fd\uff0c\u4f1a\u5c1d\u8bd5\u5728\u541e\u5410\u91cf\u548c\u5ef6\u8fdf\u4e4b\u95f4\u505a\u5e73\u8861\u3002<\/li>\n<\/ol>\n<h2><strong>4\u3001JDK11\u5e26\u6765\u4e86\u54ea\u4e9b\u65b0\u7279\u6027<\/strong><\/h2>\n<h4><strong>4.1\u3001GC\u6539\u8fdb<\/strong><\/h4>\n<blockquote><p><strong>\u9ed8\u8ba4\u5783\u573e\u56de\u6536\u5668\u6539\u4e3aG1\uff0c\u5e9f\u5f03CMS\u5783\u573e\u56de\u6536\u5668<\/strong><\/p><\/blockquote>\n<p>\u25e6 G1\u7279\u70b9\uff1a\u76ee\u6807\u662f\u964d\u4f4e\u5e94\u7528\u7a0b\u5e8f\u7684\u505c\u987f\u65f6\u95f4\u5e76\u63d0\u9ad8\u541e\u5410\u91cf\u3002<\/p>\n<blockquote><p><strong>\u5f15\u5165ZGC\u5783\u573e\u56de\u6536\u5668\uff08\u53ef\u4f38\u7f29\u4f4e\u5ef6\u8fdf\u5783\u573e\u6536\u96c6\u5668\uff09<\/strong> \u4f46\u7531\u4e8eJDK11\u4e2dZGC\u8fd8\u4e0d\u591f\u5b8c\u5584\uff0c\u63a8\u8350\u5728JDK17\u4e2d\u518d\u4f7f\u7528\u7a33\u5b9a\u7248ZGC<\/p><\/blockquote>\n<p>\u25e6 Full GC\u7684\u505c\u987f\u4e0d\u8d85\u8fc710\u6beb\u79d2<\/p>\n<p>\u25e6 \u652f\u6301TB\u7ea7\u5806\u5185\u5b58\u56de\u6536<\/p>\n<p>\u25e6 \u76f8\u5bf9\u4e8eG1\u541e\u5410\u91cf\u4e0b\u964d\u4e0d\u8d85\u8fc715%<\/p>\n<h4><strong>4.2\u3001\u6a21\u5757\u5316<\/strong><\/h4>\n<blockquote><p><strong>Java9\u5f15\u5165\u4e86\u5bf9\u4e8e\u6a21\u5757\u5316\u8f6f\u4ef6\u652f\u6301\uff0c\u800cJava11\u8fdb\u4e00\u6b65\u6269\u5c55\u4e86\u8fd9\u79cd\u7279\u6027\u3002\u6a21\u5757\u5316\u8ba9\u5e94\u7528\u7a0b\u5e8f<\/strong> <strong>\u66f4\u7cbe\u7b80\uff0c\u51cf\u5c11\u5bf9\u5176\u4ed6\u7c7b\u5e93\u7684\u4f9d\u8d56\u548c\u5197\u4f59\u4ee3\u7801\uff0c\u63d0\u9ad8\u8fd0\u884c\u6548\u7387\u548c\u5b89\u5168\u6027<\/strong> <strong>\u3002<\/strong><\/p><\/blockquote>\n<p>\u7136\u800c\uff0c\u76ee\u524d\u4e0d\u63a8\u8350\u4f7f\u7528\u6a21\u5757\u5316\uff0c\u56e0\u4e3a\u76f8\u5173\u7ec4\u4ef6\u751f\u6001\u8fd8\u4e0d\u5b8c\u5584\uff0c\u5e76\u4e14\u6a21\u5757\u5316\u5e26\u6765\u7684\u4ef7\u503c\u4e0d\u591f\u7a81\u51fa\u3002\u5177\u4f53\u539f\u56e0\u8bf7\u770b\u540e\u9762\u7ae0\u8282\u7684\u8be6\u7ec6\u5206\u6790\uff1a\u65b0\u7279\u6027\u5b9e\u8df5-\u6a21\u5757\u5316\u3002<\/p>\n<h4><strong>4.3\u3001\u8bed\u6cd5\u589e\u5f3a<\/strong><\/h4>\n<p>\u25e6 \u5c40\u90e8\u53d8\u91cf\u63a8\u65ad\uff0c\u5f15\u5165var\u5c40\u90e8\u53d8\u91cf\u7c7b\u578b\uff0c\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u7701\u7565\u901a\u5e38\u4e0d\u5fc5\u8981\u7684\u5c40\u90e8\u53d8\u91cf\u7c7b\u578b\u521d\u59cb\u5316\u58f0\u660e<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231066\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u25e6 Lambda\u8868\u8fbe\u5f0f\u7b80\u5316\uff0c\u5185\u90e8\u53ef\u4ee5\u4f7f\u7528var<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231067\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u25e6 <strong>\u63a5\u53e3\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u79c1\u6709\u65b9\u6cd5<\/strong>\uff0c\u53ef\u4ee5\u5b9e\u73b0\u63a5\u53e3\u65b9\u6cd5\u7684\u8bbf\u95ee\u63a7\u5236\u548c\u4ee3\u7801\u590d\u7528<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231068\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h4><strong>4.4\u3001API\u589e\u5f3a<\/strong><\/h4>\n<p>\u25e6 <strong>HTTPClient\u6807\u51c6\u5316\u652f\u6301<\/strong>\uff1a\u5f3a\u5927\u800c\u7075\u6d3b\u7684HTTP\u5ba2\u6237\u7aefAPI\uff0c\u652f\u6301\u591a\u534f\u8bae\uff08HTTP\/2\u3001WebSocket\uff09\u3001\u5f02\u6b65\u975e\u963b\u585e\u3001\u6d41\u64cd\u4f5c\u548c\u8fde\u63a5\u6c60\u7b49\u7279\u6027\u3002ps\uff1a\u518d\u4e5f\u4e0d\u9700\u8981\u7528\u7b2c\u4e09\u5305 HttpClient \u5de5\u5177\u5305<\/p>\n<p>\u25e6 <strong>\u5b57\u7b26\u4e32\u65b9\u6cd5\u589e\u5f3a<\/strong>\uff1a<code>isBlank<\/code>\u3001<code>lines<\/code>\u3001<code>strip<\/code>\u3001<code>stripLeading<\/code>\u3001<code>stripTrailing<\/code>\u548c<code>repeat<\/code><\/p>\n<p>\u25e6 <strong>Files\u589e\u5f3a<\/strong>\uff1areadString\u3001WriteString<\/p>\n<p>\u25e6 <strong>InputStream\u589e\u5f3a<\/strong>\uff1atransferTo\uff08\u6d41\u5feb\u901f\u62f7\u8d1d\uff09<\/p>\n<p>\u25e6 <strong>stream\u589e\u5f3a<\/strong>\uff0cdropWhile\uff08\u4ece\u96c6\u5408\u4e2d\u5220\u9664\u6ee1\u8db3\u7684\uff09\u3001takeWhile\uff08\u4ece\u96c6\u5408\u4e2d\u83b7\u53d6\u6ee1\u8db3\u7684\uff09\u3001ofNullable<\/p>\n<p>\u25e6 <strong>\u96c6\u5408\u5de5\u5382\u65b9\u6cd5<\/strong>\uff1aSets.of()\u3001List.of()\u3001Map.of()\u3001Map.ofEntries()\uff0c\u4e3e\u4f8b\uff1aList&lt;String&gt; list = List.of(&#8220;Java&#8221;, &#8220;Python&#8221;, &#8220;C++&#8221;);<\/p>\n<h2><strong>5\u3001\u5982\u4f55\u5347\u7ea7<\/strong><\/h2>\n<h4><strong>5.1\u3001\u5347\u7ea7\u5e94\u7528\u8bc4\u4f30<\/strong><\/h4>\n<ul>\n<li>\u4e3a\u4fdd\u8bc1\u7a33\u5b9a\u6027\uff0c\u6211\u4eec\u4f18\u5148\u5728\u65b0\u4e1a\u52a1\u65b0\u5e94\u7528\u6765\u843d\u5730\u5b9e\u65bdJDK11\u7684\u5347\u7ea7\u3002<\/li>\n<\/ul>\n<h4><strong>5.2\u3001JDK\u9009\u62e9<\/strong><\/h4>\n<p>\u81ea\u4ece2019\u5e741\u6708\u8d77\uff0cOracle JDK\u540e\u7eed\u7684\u7248\u672c\u5f00\u59cb\u5546\u7528\u6536\u8d39\uff0c\u6240\u4ee5\u63a8\u8350\u5927\u5bb6\u9009\u62e9OpenJDK11\uff0cOpenJDK\u548cOracleJDK\u529f\u80fd\u4e0a\u6ca1\u6709\u5dee\u5f02\uff0c\u652f\u6301\u514d\u8d39\u5546\u7528\u3002<\/p>\n<p>OpenJDK11\u4e0b\u8f7d\u5730\u5740\uff1a<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=OiN8tkS90v3eBFdu5ysq3g%3D%3D.Xia6oR1Sbo8MvhTLVyVdE898xzgCiXCqRPAFoWBQM%2B8%3D\" rel=\"noopener noreferrer\">https:\/\/jdk.java.net\/archive\/<\/a><\/p>\n<h4><strong>5.3\u3001GC\u914d\u7f6e<\/strong><\/h4>\n<blockquote><p>\u6839\u636e\u81ea\u8eab\u9700\u6c42\u548c\u673a\u5668\u914d\u7f6e\u9009\u62e9GC\uff0c\u4e0d\u540cGC\u7684JVM\u542f\u52a8\u53c2\u6570\u914d\u7f6e\uff1a<\/p><\/blockquote>\n<ul>\n<li><strong>G1\u5783\u573e\u56de\u6536\u5668<\/strong>\uff08JDK11\u9ed8\u8ba4\uff0c\u4e0d\u9700\u8981\u624b\u52a8\u914d\u7f6e\uff09\uff1a-XX:+UseG1GC<\/li>\n<li><strong>Parallel GC\u5783\u573e\u56de\u6536\u5668<\/strong>\uff1aXX:+UseParallelGC<\/li>\n<\/ul>\n<h4><strong>5.4\u3001\u5347\u7ea7\u8fc7\u7a0b\u8e29\u5751<\/strong><\/h4>\n<blockquote><p>\u6574\u4e2a\u5347\u7ea7\u8fc7\u7a0b\u8fd8\u662f\u6bd4\u8f83\u7b80\u5355\u7684\uff0c\u9664\u4e86\u5347\u7ea7JDK\u7248\u672c\uff0c\u5b9e\u9645\u9047\u5230\u7684\u95ee\u9898\u5982\u4e0b\uff1a<\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231069\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h4><strong>5.5\u3001\u5347\u7ea7\u540e\u9a8c\u8bc1<\/strong><\/h4>\n<p>\u5347\u7ea7\u540e\u5b8c\u6210\uff0c\u505a\u597d\u5355\u6d4b\u548c\u56de\u5f52\u6d4b\u8bd5\uff0c\u63a8\u8350\u80fd\u505a\u4e2a\u538b\u6d4b\u9a8c\u8bc1\uff0c\u9632\u6b62\u5f71\u54cd\u7ebf\u4e0a\u670d\u52a1\u7a33\u5b9a\u6027<\/p>\n<h2><strong>6\u3001\u65b0\u7279\u6027\u5b9e\u8df5-\u6a21\u5757\u5316<\/strong><\/h2>\n<p>Java\u4e00\u76f4\u662f\u6784\u5efa\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u6d41\u8bed\u8a00\u4e4b\u4e00\u3002\u7136\u800c\u968f\u7740Java\u751f\u6001\u7cfb\u7edf\u4e2d\u5b58\u5728\u7740\u5927\u91cf\u5e93\u548c\u590d\u6742\u7684\u4ee3\u7801\u5757\u4e4b\u95f4\u5173\u7cfb\u96be\u4ee5\u7406\u6e05\u7684\u95ee\u9898\uff0c\u6784\u5efa\u7cfb\u7edf\u53d8\u5f97\u56f0\u96be\u4e14\u8d85\u51fa\u4e86\u6211\u4eec\u7684\u7406\u89e3\u548c\u6709\u6548\u5f00\u53d1\u7684\u8303\u56f4\u3002\u7279\u522b\u662f\u5728\u4f7f\u7528\u7e41\u591a\u7684Java\u5b58\u6863\u6587\u4ef6\uff08Java Archive, JAR\uff09\u65f6\uff0c\u8fd9\u4e00\u95ee\u9898\u53d8\u5f97\u66f4\u52a0\u7a81\u51fa\u3002<strong>\u4e3a\u4e86\u5e94\u5bf9\u8fd9\u79cd\u590d\u6742\u6027\uff0c\u6a21\u5757\u5316\u80fd\u591f\u5f88\u597d\u5730\u7ba1\u7406\u548c\u51cf\u5c11\u4ee3\u7801\u7684\u590d\u6742\u6027<\/strong>\u3002\u56e0\u6b64\u81eaJava9\u5f00\u59cb\uff0c\u5f15\u5165\u4e86\u6a21\u5757\u5316\u7cfb\u7edf\u3002\u901a\u8fc7\u6a21\u5757\u5316\uff0cJava\u672c\u8eab\u4e5f\u5f97\u4ee5\u8fdb\u884c\u6a21\u5757\u5316\u6539\u8fdb\u3002<\/p>\n<h4><strong>6.1\u3001\u6a21\u5757\u5316\u662f\u4ec0\u4e48\uff1f<\/strong><\/h4>\n<p>\u6a21\u5757\u5316\u6307\u7684\u662fJAVA\u5e73\u53f0\u7684\u6a21\u5757\u7cfb\u7edf\uff08Java Platform Module System\uff09\uff0c\u7b80\u79f0JPMS\u3002JPMS\u5f15\u5165\u4e00\u79cd\u65b0\u65b9\u5f0f\u6765\u7ec4\u7ec7\u548c\u6784\u5efaJava\u5e94\u7528\u7a0b\u5e8f\uff0c\u5b83\u5c06\u4ee3\u7801\u5206\u4e3a\u76f8\u4e92\u72ec\u7acb\u3001\u53ef\u590d\u7528\u7684\u6a21\u5757\u3002\u6bcf\u4e2a\u5757\u90fd\u6709\u81ea\u5df1\u7684\u547d\u540d\u7a7a\u95f4\uff0c\u660e\u786e\u58f0\u660e\u5e76\u63a7\u5236\u5176\u4ed6\u6a21\u5757\u7684\u8bbf\u95ee\u6743\u9650\u3002\u8fd9\u79cd\u6a21\u5757\u5316\u8bbe\u8ba1\u4f7f\u5f97\u5f00\u53d1\u4eba\u5458\u80fd\u591f\u66f4\u597d\u5730\u7ef4\u62a4\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u590d\u7528\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u5b89\u5168\u6027\uff0c\u540c\u65f6\u63d0\u5347\u5e94\u7528\u7684\u52a0\u8f7d\u901f\u5ea6\u548c\u6027\u80fd<strong>\u3002<\/strong><strong>\u6700\u5927\u7684\u7279\u70b9\u662f\u53ef\u4ee5\u5b9a\u4e49\u6a21\u5757\u63cf\u8ff0\u7b26\u6765\u9694\u79bbmodule\uff08Jar\u5305\uff09\u5185\u90e8\u7c7b\u7684\u8bbf\u95ee\u6743\u9650\u3002<\/strong><\/p>\n<p><strong>\u6a21\u5757\u5316\u7684\u51e0\u70b9\u5173\u952e\u8bf4\u660e\uff1a<\/strong><\/p>\n<p><strong>1\uff09\u76f8\u5bf9\u4e8eJDK8\u7684\u53d8\u52a8<\/strong><\/p>\n<ul>\n<li>JDK9\u4ee5\u540e\u5f15\u5165\u4e86\u4e00\u4e2a\u65b0\u7ec4\u4ef6module\uff1a\u6a21\u5757\u63cf\u8ff0\u7b26module-info.java\uff0c\u7528\u4e8e\u5c06\u4e00\u7ec4\u76f8\u5173\u7684\u5305\u653e\u5165\u4e00\u4e2a\u7ec4\u4e2d\u3002<\/li>\n<li>\u5728Java8\u548c\u66f4\u65e9\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5e94\u7528\u7a0b\u5e8f\u5c06\u5305\u4f5c\u4e3a\u9876\u7ea7\u7ec4\u4ef6\uff0cJava9\u4ee5\u540e\u5e94\u7528\u7a0b\u5e8f\u5c06\u6a21\u5757\u4f5c\u4e3a\u9876\u7ea7\u7ec4\u4ef6<\/li>\n<li>\u4e00\u4e2a\u6a21\u5757\uff08Jar\u5305\uff09\u53ea\u80fd\u6709\u4e00\u4e2amodule-info.java\u3002<\/li>\n<\/ul>\n<p><strong>2\uff09\u548cmaven\u7684\u5173\u7cfb<\/strong><\/p>\n<p>\u6a21\u5757\u5316\u5e76\u4e0d\u662f\u8981\u66ff\u4ee3maven\uff0c\u548cmaven\u672c\u8eab\u5e76\u4e0d\u51b2\u7a81\uff0cmaven\u5b9a\u4e49jar\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u6a21\u5757\u5316\u662f\u5bf9\u5df2\u7ecf\u4f9d\u8d56\u7684jar\u4e0b\u7684\u5305\u8fdb\u884c\u66f4\u7ec6\u7c92\u5ea6\u4f9d\u8d56\u63a7\u5236<\/p>\n<p><strong>3\uff09\u5982\u4f55\u517c\u5bb9\u65e7\u5e94\u7528<\/strong><\/p>\n<p>\u5929\u7136\u517c\u5bb9\u65e7\u5e94\u7528\u3002\u4e3a\u4e86\u5411\u540e\u517c\u5bb9\u65e7\u9879\u76ee\uff0c\u4e00\u4e9b\u5e93\u672c\u8eab\u5e76\u672a\u6a21\u5757\u5316\uff0c\u5176\u4ecd\u7136\u53ef\u4ee5\u4f5c\u4e3a\u6a21\u5757\u5728\u6a21\u5757\u8def\u5f84\u4e2d\u4f7f\u7528\uff0c\u800c\u8fd9\u4e9b\u5e93\u5728\u6a21\u5757\u8def\u5f84\u4e0a\u65f6\u4f1a\u88ab\u8f6c\u5316\u4e3a\u81ea\u52a8\u6a21\u5757\uff0c\u4f8b\u5982\uff1ajackson-databind-1.0.0.jar\u5c06\u6210\u4e3a\u81ea\u52a8\u6a21\u5757jackson.databind<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231070\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h4><strong>6.2\u3001\u5e26\u6765\u4e86\u54ea\u4e9b\u597d\u5904\uff1f<\/strong><\/h4>\n<p><strong>1\uff09\u5c01\u88c5\u548c\u9694\u79bb\uff0c\u66f4\u597d\u7684\u8bbf\u95ee\u63a7\u5236<\/strong><\/p>\n<p>\u6a21\u5757\u5316\u5141\u8bb8\u5f00\u53d1\u8005\u5c06\u4ee3\u7801\u548c\u8d44\u6e90\u5c01\u88c5\u5728\u72ec\u7acb\u7684\u6a21\u5757\u4e2d\u3002\u6a21\u5757\u4e4b\u95f4\u53ef\u4ee5\u660e\u786e\u5730\u5b9a\u4e49\u516c\u5f00\u548c\u79c1\u6709\u7684API\uff0c\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u4ee3\u7801\u9694\u79bb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p>ps\uff1a\u65b0\u4e1a\u52a1\u5355\u5e94\u7528\u53ef\u4ee5\u6309\u7167\u9886\u57df\u6a21\u578b\u6765\u8fdb\u884c\u591a\u6a21\u5757\u7684\u5212\u5206\uff0c\u4ee5\u907f\u514d\u4ee3\u7801\u8150\u5316\u3002\u7b80\u5355\u4e3e\u4f8b\u5355\u5e94\u7528\u4e0b\u5b58\u5728\u4ea7\u54c1.jar\u3001\u8ba2\u5355.jar\u3002\u8ba2\u5355\u4f9d\u8d56\u4ea7\u54c1\uff0c\u901a\u8fc7\u6a21\u5757\u5316\u7684\u9650\u5236\uff0c\u8ba2\u5355\u53ea\u80fd\u4f7f\u7528\u4ea7\u54c1\u4e2d\u660e\u786e\u5bf9\u5916\u66b4\u9732\u7684\u7c7b\uff0c\u8fd9\u6837\u5c31\u907f\u514d\u4f20\u7edf\u6a21\u5f0f\u8ba2\u5355.jar\u53ef\u80fd\u4f9d\u8d56\u4e86\u4ea7\u54c1.jar\u4e2d\u666e\u901a\u7684\u7c7b\u5bfc\u81f4\u4ee3\u7801\u8150\u5316\u7684\u95ee\u9898\uff0c\u4e5f\u964d\u4f4e\u540e\u7eed\u9886\u57df\u670d\u52a1\u62c6\u5206\u7684\u590d\u6742\u5ea6<\/p>\n<p><strong>2\uff09\u66f4\u597d\u7684\u53ef\u4f38\u7f29\u6027\uff0c\u52a0\u8f7d\u901f\u5ea6\u7684\u63d0\u5347<\/strong><\/p>\n<p>\u6a21\u5757\u5316\u7cfb\u7edf\u4f7f\u5f97Java\u5e73\u53f0\u66f4\u52a0\u53ef\u4f38\u7f29\uff0c\u901a\u8fc7\u6a21\u5757\u5316\u5b9a\u4e49\uff0c\u53ef\u4ee5\u4ec5\u52a0\u8f7d\u9700\u8981\u7684\u6a21\u5757\uff0c\u4ece\u800c\u63d0\u5347\u52a0\u8f7d\u7c7b\u7684\u6548\u7387\uff0c\u6700\u7ec8\u51cf\u5c11\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u5185\u5b58\u5360\u7528\u548c\u542f\u52a8\u65f6\u95f4\uff0c\u540c\u65f6\u6253\u5305\u540e\u7684\u7a0b\u5e8f\u4e5f\u66f4\u5c0f\u3002<\/p>\n<p><strong>3\uff09\u660e\u786e\u7684\u4f9d\u8d56\u5173\u7cfb<\/strong><\/p>\n<p>\u6a21\u5757\u5316\u7cfb\u7edf\u8981\u6c42\u5728\u6a21\u5757\u4e4b\u95f4\u660e\u786e\u5b9a\u4e49\u4f9d\u8d56\u5173\u7cfb\u3002\u5728\u7f16\u8bd1\u6216\u8fd0\u884c\u4ee3\u7801\u4e4b\u524d\uff0c\u6a21\u5757\u7cfb\u7edf\u4f1a\u68c0\u67e5\u6a21\u5757\u662f\u5426\u6ee1\u8db3\u6240\u6709\u4f9d\u8d56\u5173\u7cfb\uff0c\u4ece\u800c\u5bfc\u81f4\u66f4\u5c11\u7684\u8fd0\u884c\u65f6\u9519\u8bef\u3002<\/p>\n<p><strong>4\uff09\u5b89\u5168<\/strong><\/p>\n<p>\u5728JVM\u7684\u6700\u6df1\u5c42\u6b21\u4e0a\u6267\u884c\u5f3a\u5c01\u88c5\uff0c\u51cf\u5c11Java\u8fd0\u884c\u65f6\u7684\u653b\u51fb\u9762\uff0c\u540c\u65f6\u65e0\u6cd5\u83b7\u5f97\u5bf9\u654f\u611f\u5185\u90e8\u7c7b\u7684\u53cd\u5c04\u8bbf\u95ee\u3002<\/p>\n<h4><strong>6.3\u3001\u5982\u4f55\u4f7f\u7528<\/strong><\/h4>\n<p><strong>1\uff09\u5b9a\u4e49module-a.jar<\/strong><\/p>\n<p>\u5305\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n<pre><code>com.jdt.a\n        person\n            Men.java\n        reflect\n            ReflectModel.java\n        module-info.java    \n\n\n\n<\/code><\/pre>\n<p>module-info\u6587\u4ef6\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>module module.a { \n    \/\/\u6307\u4ee4\u7528\u4e8e\u6307\u5b9a\u4e00\u4e2a\u6a21\u5757\u4e2d\u54ea\u4e9b\u5305\u4e0b\u7684public\u5bf9\u5916\u662f\u53ef\u8bbf\u95ee\u7684\uff0c\u5305\u62ec\u76f4\u63a5\u5f15\u5165\u548c\u53cd\u5c04\u4f7f\u7528 \n    exports com.jdt.a.person; \n    \/\/ \u53ea\u80fd\u88ab\u53cd\u5c04\u8c03\u7528\uff0c\u7528\u4e8e\u6307\u5b9a\u67d0\u4e2a\u5305\u4e0b\u6240\u6709\u7684 public \u7c7b\u90fd\u53ea\u80fd\u5728\u8fd0\u884c\u65f6\u53ef\u88ab\u522b\u7684\u6a21\u5757\u8fdb\u884c\u53cd\u5c04\uff0c\u5e76\u4e14\u8be5\u5305\u4e0b\u7684\u6240\u6709\u7684\u7c7b\u53ca\u5176\u4e58\u5458\u90fd\u53ef\u4ee5\u901a\u8fc7\u53cd\u5c04\u8fdb\u884c\u8bbf\u95ee\u3002 \n    opens com.jdt.a.refect; \n}\n\n\n\n<\/code><\/pre>\n<p><strong>2\uff09\u5b9a\u4e49module-b.jar,\u5305\u7684pom\u4e2d\u6307\u5b9a\u4f9d\u8d56\u4e86module-a<\/strong><\/p>\n<p>\u5305\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n<pre><code>com.jdt.b\n        test\n            Test.java\n        module-info.java    \n\n\n\n<\/code><\/pre>\n<p>module-info\u6587\u4ef6\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><code>module module.b {\n     \/\/\u4f9d\u8d56a\u4e0b\u7684\u5305\n     requires module.a;\n}\n\n\n\n<\/code><\/pre>\n<p><strong>3\uff09\u6b64\u65f6module-b.jar,\u5728\u7f16\u5199\u7f16\u7801\u65f6\uff0c\u4f1a\u9047\u5230\u5982\u4e0b\u95ee\u9898<\/strong><\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231071\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h4><strong>6.4\u3001\u5b9e\u8df5\u8fc7\u7a0b\u7684\u5751<\/strong><\/h4>\n<p>\u4e0a\u9762\u7b80\u5355\u4ecb\u7ecd\u4e86\u6a21\u5757\u5316\u7684\u77e5\u8bc6\uff0c\u5177\u4f53\u5728\u843d\u5730\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u4e3b\u8981\u8e29\u4e86\u4ee5\u4e0b\u7684\u5751\uff0c\u4f9b\u5927\u5bb6\u53c2\u8003<\/p>\n<p><strong>1\uff09\u4f9d\u8d56JSF\u5305\u65f6\u65e0\u6cd5\u6a21\u5757\u5316<\/strong><\/p>\n<p>* JSF\u662f\u4eac\u4e1c\u5185\u90e8\u4f7f\u7528\u7684\u9ad8\u6027\u80fdRPC\u6846\u67b6<\/p>\n<p>\u8fdb\u884c\u6a21\u5757\u5316\u65f6\uff0cpom\u4e2d\u4f9d\u8d56\u4e86jsf\u5305\uff0c\u6a21\u5757\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<pre><code>module module.a {\n    requires  fastjson;\n    \/\/\u4f9d\u8d56jsf\u5305\u540d\n    requires  jsf.lite;\n\n    exports com.jd.jdk.test.module;\n}\n\n\n\n<\/code><\/pre>\n<p>\u6b64\u65f6\u7f16\u8bd1\u62a5\u9519\u5982\u4e0b\uff1a\u63d0\u793a\u627e\u4e0d\u5230\u6a21\u5757\uff1ajsf.lite\uff0c\u4f46\u662fpom\u4e2d\u660e\u660e\u6307\u5b9a\u4f9d\u8d56\u4e86jsf.lite<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231072\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p><strong>\u95ee\u9898\u539f\u56e0\uff1a<\/strong><\/p>\n<p>\u7ecf\u8fc7\u4e00\u7cfb\u5217\u5b9a\u4f4d\u7814\u7a76\uff0c\u53d1\u73b0jsf-lite\u5305\u4e2d\uff0c\/META-INF\/services\u4e0b\u7684\u6587\u4ef6org.glassfish.jersey.internal.spi.AutoDiscoverable\u91cc\u9762\u5199\u7684\u7c7b\u662fcom.alibaba.fastjson.support.jaxrs.FastJsonAutoDiscoverable\uff0c\u6b64\u7c7b\u5e76\u672a\u5728\u5f53\u524djsf.lite\u5305\u4e2d\u5b9a\u4e49\uff0c\u5c5e\u4e8ecom.alibaba.fastjson\u5305\u7684\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231073\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4f46\u662f\u6211\u4eec\u7684pom\u4e2d\u660e\u660e\u4e5f\u4f9d\u8d56\u4e86com.alibaba.fastjson\u5305\uff0c\u4e3a\u4ec0\u4e48\u6a21\u5757\u5316\u540e\uff0c\u5c31\u627e\u4e0d\u5230\u4e86\u5462\uff1f<\/p>\n<p><strong>\u4e3b\u8981\u539f\u56e0\u5728\u4e8e\u6a21\u5757\u5316\u9047\u5230SPI\uff08Service Provider Interface\uff09\u65f6\u7684\u7ea6\u675f\uff1a\u6a21\u5757\u5316\u65f6\uff0cSPI\u673a\u5236\u8981\u6c42\u914d\u7f6e\u4e2d\u5b9a\u4e49\u4f9d\u8d56\u7684\u7c7b\u5fc5\u987b\u672c\u6a21\u5757\u5b9a\u4e49\u7684\uff0c\u4e0d\u80fd\u662f\u5176\u4ed6\u6a21\u5757\u7684\u5305\uff08\u6765\u81ea\u5b83\u4e0d\u62e5\u6709\u7684\u5305\uff09\uff0c\u5426\u5219\uff0c\u6b64\u5305\u5c06\u65e0\u6cd5\u88ab\u6a21\u5757\u5316<\/strong><\/p>\n<p>\u8fd9\u6837\u4e5f\u5c31\u89e3\u91ca\u4e86\uff0c\u4e3a\u4ec0\u4e48\u4e0a\u9762jsf\u65e0\u6cd5\u627e\u5230module\u7684\u95ee\u9898\uff0cjsf-lite\u91cc\u9762\u8bbe\u7f6e\u4e86\u5b83\u4e0d\u62e5\u6709\u7684\u5305\uff1acom.alibaba.fastjson.support.jaxrs.FastJsonAutoDiscoverable\uff0c\u5bfc\u81f4jsf-lite\u5305\u65e0\u6cd5\u88ab\u81ea\u52a8\u6a21\u5757\u5316<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p>1\u3001\u8054\u7cfbJSF\u56e2\u961f\uff0c\u5347\u7ea7JSF\u5305\uff0c\u4fee\u590d\u4e0a\u9762\u8bf4\u7684FastJsonAutoDiscoverable\u914d\u7f6e\u9519\u8bef\u7684\u95ee\u9898\u3002<\/p>\n<p><strong>2\uff09\u62c6\u5305\u95ee\u9898\uff08\u6a21\u5757\u9694\u79bb\uff09<\/strong><\/p>\n<p><strong>\u6a21\u5757\u5316\u7ea6\u675f\uff1ajdk9\u4ee5\u4e0a\uff0c\u4f7f\u7528\u6a21\u5757\u5316\u65f6\u4e0d\u652f\u6301\u62c6\u5206\u5305\u7684\u5f62\u5f0f\u4f9d\u8d56<\/strong><\/p>\n<p>\u62c6\u5206\u5305\u610f\u5473\u7740\u4e24\u4e2a\u6a21\u5757\u5305\u542b\u76f8\u540c\u7684\u5305\uff0cJava\u6a21\u5757\u7cfb\u7edf\u4e0d\u5141\u8bb8\u62c6\u5206\u5305\u3002\u62c6\u5206\u5305\u59cb\u7ec8\u662f\u4e0d\u6b63\u5e38\u7684\uff0c\u800c\u5f53\u4f7f\u7528\u89e3\u6790\u53ef\u4f20\u9012\u4f9d\u8d56\u9879\u7684\u6784\u5efa\u5de5\u5177\uff08\u5982Maven\u7b49\uff09\u65f6\uff0c\u5f88\u5bb9\u6613\u51fa\u73b0\u540c\u4e00\u4e2a\u5e93\u7684\u591a\u4e2a\u7248\u672c\uff0c\u5f53Java\u6a21\u5757\u7cfb\u7edf\u68c0\u6d4b\u5230\u4e00\u4e2a\u5305\u5b58\u5728\u4e8e\u6a21\u5757\u8def\u5f84\u4e0a\u7684\u591a\u4e2a\u6a21\u5757\u4e2d\u65f6\uff0c\u5c31\u4f1a\u62d2\u7edd\u542f\u52a8\u3002<\/p>\n<p><strong>\u4f8b\u5982\uff1a<\/strong><\/p>\n<pre><code>module-a.jar\u5305\u7ed3\u6784\u5b9a\u4e49\uff1a\ncom.foo.package\n    A.java\n    \nmodule-b.jar\u5305\u7ed3\u6784\u5b9a\u4e49\uff1a\ncom.foo.package\n    B.java   \n\n\n\n<\/code><\/pre>\n<p>\u5f53module-c\u540c\u65f6\u4f9d\u8d56module-a\u548cmodule-b\u65f6\uff0c\u5982\u4e0a\u7f16\u8bd1\u65f6\u4f1a\u62a5\u4e00\u4e2a\u9519\uff0c<code>Package com.foo.package in both module module.b and module module.a<\/code>\uff0c\u8fd9\u5c31\u662fJAVA9\u7684\u6a21\u5757\u9694\u79bb\uff0c\u8981\u6c42\u53ea\u80fd\u4ece\u4e00\u4e2a\u6a21\u5757\uff08module\uff09\u4e2d\u8bfb\u53d6\u540c\u4e00\u4e2a\u5305\uff08package\uff09\uff0c\u4e0d\u80fd\u8de8\u6a21\u5757\u8bfb\u53d6\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p>\u5982\u679c\u5728\u4f7f\u7528\u6a21\u5757\u5316\u65f6\uff0c\u9047\u5230\u4e86\u62c6\u5206\u5305\u95ee\u9898\uff0c\u65e0\u8bba\u5982\u4f55\u90fd\u662f\u65e0\u6cd5\u7ed5\u8fc7\u7684\u3002\u5373\u4f7f\u4ece\u7528\u6237\u89d2\u5ea6\u6765\u770b\u57fa\u4e8e\u7c7b\u8def\u5f84\u7684\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u6b63\u786e\u5de5\u4f5c\uff0c\u4f60\u4e5f\u6700\u7ec8\u9700\u8981\u5904\u7406\u8fd9\u4e9b\u95ee\u9898\u3002\u6b64\u65f6\u53ea\u80fd\u505c\u7528\u6a21\u5757\u5316\u6216\u5347\u7ea7jar\u5305\uff0c\u907f\u514d\u62c6\u5206\u5305\u95ee\u9898<\/p>\n<h4><strong>6.5\u3001\u6a21\u5757\u5316\u843d\u5730\u603b\u7ed3<\/strong><\/h4>\n<p>\u76ee\u524d<strong>\u4e0d\u63a8\u8350\u4f7f\u7528\u6a21\u5757\u5316<\/strong>\uff0c\u56e0\u4e3a\u76f8\u5173\u7ec4\u4ef6\u751f\u6001\u8fd8\u4e0d\u5b8c\u5584\uff0c\u5e76\u4e14\u6a21\u5757\u5316\u5e26\u6765\u7684\u4ef7\u503c\u4e0d\u591f\u7a81\u51fa\uff1a<\/p>\n<ol>\n<li>\u5f88\u591a\u4e2d\u95f4\u4ef6\u90fd\u662f\u57fa\u4e8ejdk8\u6784\u5efa\u7684\uff0c\u90fd\u6709\u53ef\u80fd\u9047\u5230\u6a21\u5757\u5316\u517c\u5bb9\u7684\u95ee\u9898\uff0c\u6bd4\u5982\uff1ajsf\uff0c\u9700\u8981jsf\u5f3a\u5236\u5347\u7ea7\u624d\u53ef\u4ee5\u4f7f\u7528\u6a21\u5757\u5316<\/li>\n<li>\u62c6\u5305\u95ee\u9898\u65e0\u6cd5\u89e3\u51b3\uff0c\u6bd4\u5982\uff1aaws-java-sdk-s3\u3001fluent\u7b49\u3002<\/li>\n<\/ol>\n<h2><strong>7\u3001\u603b\u7ed3<\/strong><\/h2>\n<ol>\n<li>\u5347\u7ea7\u8fc7\u7a0b\u7b80\u5355\uff0c\u5347\u7ea7\u540e\u53ef\u4ee5\u4f7f\u7528\u66f4\u591a\u65b0\u7279\u6027\u548c\u66f4\u597d\u7684GC\u6027\u80fd\uff0c\u6240\u4ee5 <strong>\u5efa\u8bae\u5347\u7ea7\u5230JDK11<\/strong>\u3002<\/li>\n<li>\u73b0\u9636\u6bb5 <strong>\u4e0d\u63a8\u8350\u4f7f\u7528\u6a21\u5757\u5316<\/strong>\uff0c\u4f46\u662f\u4e0d\u7528\u62c5\u5fc3\u4f1a\u5f71\u54cdJDK11\u7684\u5347\u7ea7\u3002<\/li>\n<\/ol>\n<p>\u53e6\u5916\u542c\u8bf4JDK17\u7684 ZGC\u53ef\u4ee5\u8fbe\u5230\u4e9a\u79d2\u7ea7\u505c\u987f\uff0c\u4f46\u8003\u8651\u5230JDK11\u7684ZGC\u8fd8\u4e0d\u662f\u5f88\u7a33\u5b9a\uff0c\u6240\u4ee5\u672c\u6b21\u4e0d\u505a\u6d4b\u8bd5\uff0c\u540e\u9762\u5347\u7ea7\u5230JDK17\u540e\u518d\u7ed9\u5927\u5bb6\u5206\u4eabZGC\u538b\u6d4b\u6548\u679c\u3002<\/p>\n<p>\u5e0c\u671b\u4ee5\u4e0a\u5206\u4eab\u53ef\u4ee5\u7ed9\u5927\u5bb6\u5e26\u6765\u5b9e\u9645\u7684\u5e2e\u52a9\u3002<\/p>\n<blockquote>\n<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u79d1\u6280\u00a0\u66f2\u632f\u5bcc<\/p>\n<p>\u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044231061\">https:\/\/segmentfault.com\/a\/1190000044231061<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u524d\u8a00 \u622a\u81f3\u76ee\u524d\uff082023\u5e74\uff09\uff0cJava8\u53d1\u5e03\u81f3\u4eca\u5df2\u67099\u5e74\uff0c2018\u5e749\u670825\u65e5\uff0cOracle\u53d1\u5e03\u4e86Java [&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-10008289","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\/10008289","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=10008289"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008289\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}