{"id":10008350,"date":"2023-09-28T12:48:05","date_gmt":"2023-09-28T04:48:05","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008350"},"modified":"2023-09-28T12:48:05","modified_gmt":"2023-09-28T04:48:05","slug":"java-21-%e6%96%b0%e7%89%b9%e6%80%a7%ef%bc%9a%e8%99%9a%e6%8b%9f%e7%ba%bf%e7%a8%8b%ef%bc%88virtual-threads%ef%bc%89","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008350","title":{"rendered":"Java 21 \u65b0\u7279\u6027\uff1a\u865a\u62df\u7ebf\u7a0b\uff08Virtual Threads\uff09"},"content":{"rendered":"

\u5728Java 21\u4e2d\uff0c\u5f15\u5165\u4e86\u865a\u62df\u7ebf\u7a0b\uff08Virtual Threads\uff09\u6765\u7b80\u5316\u548c\u589e\u5f3a\u5e76\u53d1\u6027\uff0c\u8fd9\u4f7f\u5f97\u5728Java\u4e2d\u7f16\u7a0b\u5e76\u53d1\u7a0b\u5e8f\u66f4\u5bb9\u6613\u3001\u66f4\u9ad8\u6548\u3002<\/p>\n

\u865a\u62df\u7ebf\u7a0b<\/a>\uff0c\u4e5f\u79f0\u4e3a\u201c\u7528\u6237\u6a21\u5f0f\u7ebf\u7a0b\uff08user-mode threads\uff09\u201d\u6216\u201c\u7ea4\u7a0b\uff08fibers\uff09\u201d\u3002\u8be5\u529f\u80fd\u65e8\u5728\u7b80\u5316\u5e76\u53d1\u7f16\u7a0b\u5e76\u63d0\u4f9b\u66f4\u597d\u7684\u53ef\u6269\u5c55\u6027\u3002\u865a\u62df\u7ebf\u7a0b\u662f\u8f7b\u91cf\u7ea7\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u53ef\u4ee5\u6bd4\u4f20\u7edf\u7ebf\u7a0b\u521b\u5efa\u66f4\u591a\u6570\u91cf\uff0c\u5e76\u4e14\u5f00\u9500\u8981\u5c11\u5f97\u591a\u3002\u8fd9\u4f7f\u5f97\u5728\u81ea\u5df1\u7684\u7ebf\u7a0b\u4e2d\u8fd0\u884c\u5355\u72ec\u4efb\u52a1\u6216\u8bf7\u6c42\u53d8\u5f97\u66f4\u52a0\u5b9e\u7528\uff0c\u5373\u4f7f\u5728\u9ad8\u541e\u5410\u91cf\u7684\u7a0b\u5e8f\u4e2d\u4e5f\u662f\u5982\u6b64\u3002<\/p>\n

\u521b\u5efa\u548c\u4f7f\u7528\u865a\u62df\u7ebf\u7a0b<\/h2>\n

\u5728Java 21\u4e2d\u521b\u5efa\u548c\u4f7f\u7528\u865a\u62df\u7ebf\u7a0b\u6709\u591a\u79cd\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528\u9759\u6001\u6784\u5efa\u5668\u65b9\u6cd5<\/h3>\n

Thread.startVirtualThread<\/code>\u65b9\u6cd5\u5c06\u53ef\u8fd0\u884c\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570\u6765\u521b\u5efa\uff0c\u5e76\u7acb\u5373\u542f\u52a8\u865a\u62df\u7ebf\u7a0b\uff0c\u5177\u4f53\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n

Runnable runnable = () -> {\n    System.out.println("Hello, www.didispace.com");\n};\n\n\/\/ \u4f7f\u7528\u9759\u6001\u6784\u5efa\u5668\u65b9\u6cd5\nThread virtualThread = Thread.startVirtualThread(runnable);<\/code><\/pre>\n
\u4e5f\u53ef\u4ee5\u4f7f\u7528Thread.ofVirtual()<\/code>\u6765\u521b\u5efa\uff0c\u8fd9\u91cc\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e9b\u5c5e\u6027\uff0c\u6bd4\u5982\uff1a\u7ebf\u7a0b\u540d\u79f0\u3002\u5177\u4f53\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n
Thread.ofVirtual()\n        .name("didispace-virtual-thread")\n        .start(runnable);<\/code><\/pre>\n
2. \u4e0eExecutorService<\/code>\u7ed3\u5408\u4f7f\u7528<\/h3>\n
\u4eceJava 5\u5f00\u59cb\uff0c\u5c31\u63a8\u8350\u5f00\u53d1\u4eba\u5458\u4f7f\u7528ExecutorServices<\/code>\u800c\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528Thread<\/code>\u7c7b\u4e86\u3002\u73b0\u5728\uff0cJava 21\u4e2d\u5f15\u5165\u4e86\u4f7f\u7528\u865a\u62df\u7ebf\u7a0b\uff0c\u6240\u4ee5\u4e5f\u6709\u4e86\u65b0\u7684ExecutorService<\/code>\u6765\u9002\u914d\uff0c\u770b\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n
Runnable runnable = () -> {\n    System.out.println("Hello, www.didispace.com");\n};\n\ntry (ExecutorService executorService = Executors.newVirtualThreadPerTaskExecutor()) {\n    for (int i = 0; i < 100; i++) {\n        executorService.submit(runnable);\n    }\n}<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u5728try\u4ee3\u7801\u5757\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2aExecutorServices<\/code>\uff0c\u7528\u6765\u4e3a\u6bcf\u4e2a\u63d0\u4ea4\u7684\u4efb\u52a1\u521b\u5efa\u865a\u62df\u7ebf\u7a0b\u3002<\/p>\n
3. \u4f7f\u7528\u865a\u62df\u7ebf\u7a0b\u5de5\u5382<\/h3>\n
\u5f00\u53d1\u8005\u8fd8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u751f\u6210\u865a\u62df\u7ebf\u7a0b\u7684\u5de5\u5382\u6765\u7ba1\u7406\uff0c\u5177\u4f53\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\u4f8b\u5b50\uff1a<\/p>\n
Runnable runnable = () -> {\n    System.out.println("Hello, www.didispace.com");\n};\n\nThreadFactory virtualThreadFactory = Thread.ofVirtual()\n        .name("didispace", 0)\n        .factory();\n\nThread factoryThread = virtualThreadFactory.newThread(runnable);\nfactoryThread.start;<\/code><\/pre>\n
\u8fd9\u6bb5\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u865a\u62df\u7ebf\u7a0b\u5de5\u5382\uff0c\u6bcf\u4e2a\u865a\u62df\u7ebf\u7a0b\u90fd\u4f1a\u4ee5didispace<\/code>\u4e3a\u524d\u7f00\u3001\u4ee5\u6570\u5b57\u7ed3\u5c3e\uff08\u4ece0\u5f00\u59cb\u7d2f\u52a0\uff09\u7684\u540d\u79f0\u3002<\/p>\n
\u5c0f\u7ed3<\/h2>\n
\u4e0a\u9762\u6211\u4eec\u4ecb\u7ecd\u4e86\u865a\u62df\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u4f7f\u7528\uff0c\u800c\u6211\u4eec\u5927\u591a\u6570Java\u5f00\u53d1\u8005\u90fd\u57fa\u4e8eSpring\u6765\u5f00\u53d1\u5177\u4f53\u4e1a\u52a1\u5e94\u7528\uff0c\u6240\u4ee5\u5f88\u591a\u573a\u666f\u4e0b\u53ef\u80fd\u90fd\u4e0d\u592a\u6d89\u53ca\u624b\u5de5\u521b\u5efa\u7684\u64cd\u4f5c\u3002\u6240\u4ee5\uff0c\u5bf9\u4e8e\u865a\u62df\u7ebf\u7a0b\u7684\u6982\u5ff5\uff0c\u4f60\u53ea\u9700\u8981\u6709\u4e00\u4e2a\u57fa\u672c\u7684\u8ba4\u8bc6\u3002\u6240\u4ee5\uff0c\u5728\u6587\u7ae0\u7684\u6700\u540e\uff0c\u505a\u4e00\u4e2a\u5c0f\u7ed3\uff0c\u4ee5\u65b9\u4fbf\u5927\u5bb6\u7406\u89e3\u548c\u8bb0\u5fc6\uff1a<\/p>\n