{"id":3991,"date":"2025-07-28T21:18:07","date_gmt":"2025-07-28T13:18:07","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3991"},"modified":"2025-07-28T21:18:07","modified_gmt":"2025-07-28T13:18:07","slug":"%e5%bd%93%e4%bb%bb%e5%8a%a1%e6%95%b0%e8%b6%85%e8%bf%87%e7%ba%bf%e7%a8%8b%e6%b1%a0%e7%9a%84%e6%a0%b8%e5%bf%83%e7%ba%bf%e7%a8%8b%e6%95%b0%e6%97%b6%ef%bc%8c%e5%a6%82%e4%bd%95%e8%ae%a9%e5%ae%83%e4%b8%8d","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/07\/28\/%e5%bd%93%e4%bb%bb%e5%8a%a1%e6%95%b0%e8%b6%85%e8%bf%87%e7%ba%bf%e7%a8%8b%e6%b1%a0%e7%9a%84%e6%a0%b8%e5%bf%83%e7%ba%bf%e7%a8%8b%e6%95%b0%e6%97%b6%ef%bc%8c%e5%a6%82%e4%bd%95%e8%ae%a9%e5%ae%83%e4%b8%8d\/","title":{"rendered":"\u5f53\u4efb\u52a1\u6570\u8d85\u8fc7\u7ebf\u7a0b\u6c60\u7684\u6838\u5fc3\u7ebf\u7a0b\u6570\u65f6\uff0c\u5982\u4f55\u8ba9\u5b83\u4e0d\u8fdb\u5165\u961f\u5217\uff0c\u800c\u662f\u76f4\u63a5\u542f\u7528\u6700\u5927\u7ebf\u7a0b\u6570"},"content":{"rendered":"\n<p>\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38<strong>\u5b9e\u6218\u4e14\u5173\u952e\u7684\u7ebf\u7a0b\u6c60\u8c03\u4f18\u95ee\u9898<\/strong>\u3002Java \u7684\u7ebf\u7a0b\u6c60\u9ed8\u8ba4\u884c\u4e3a\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u5f53\u4efb\u52a1\u6570\u8d85\u8fc7 <code>corePoolSize<\/code> \u65f6\uff0c\u4efb\u52a1\u4f1a\u88ab\u653e\u5165\u4efb\u52a1\u961f\u5217\uff0c\u800c\u4e0d\u662f\u7acb\u5373\u521b\u5efa\u65b0\u7ebf\u7a0b\uff08\u5373\u4f7f\u8fd8\u6ca1\u8fbe\u5230 <code>maximumPoolSize<\/code>\uff09<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6211\u4eec\u7684\u76ee\u6807\u662f\uff1a<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201c<strong>\u4efb\u52a1\u6570\u8d85\u8fc7\u6838\u5fc3\u7ebf\u7a0b\u6570\u65f6\uff0c\u4e0d\u8ba9\u4efb\u52a1\u6392\u961f\uff0c\u800c\u662f\u9a6c\u4e0a\u542f\u7528\u6700\u5927\u7ebf\u7a0b\u6570\u5185\u7684\u65b0\u7ebf\u7a0b\u6765\u5904\u7406\u4efb\u52a1<\/strong>\u201d<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u73b0\u65b9\u6cd5\uff1a\u4f7f\u7528 <code>SynchronousQueue<\/code> + \u81ea\u5b9a\u4e49 <code>ThreadPoolExecutor<\/code><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u539f\u56e0\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ed8\u8ba4\u5982 <code>LinkedBlockingQueue<\/code> \u662f<strong>\u6709\u961f\u5217\u5bb9\u91cf\u7684\u963b\u585e\u961f\u5217<\/strong>\uff0c\u4f1a\u4f18\u5148\u6392\u961f\u800c\u4e0d\u662f\u521b\u5efa\u65b0\u7ebf\u7a0b\uff1b<\/li>\n\n\n\n<li><strong><code>SynchronousQueue<\/code> \u662f\u65e0\u7f13\u51b2\u961f\u5217<\/strong>\uff0c\u4e0d\u4f1a\u4fdd\u5b58\u4efb\u52a1\uff0c\u800c\u662f<strong>\u5c06\u4efb\u52a1\u76f4\u63a5\u4ea4\u7ed9\u7ebf\u7a0b\u5904\u7406<\/strong>\uff1b<\/li>\n\n\n\n<li>\u6240\u4ee5\uff0c\u53ea\u8981\u6ca1\u6709\u7a7a\u95f2\u7ebf\u7a0b\uff0c\u7ebf\u7a0b\u6c60\u5c31\u4f1a\u5c1d\u8bd5\u521b\u5efa\u65b0\u7ebf\u7a0b\uff0c\u76f4\u5230\u8fbe\u5230 <code>maximumPoolSize<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u63a8\u8350\u4ee3\u7801\u793a\u4f8b<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.concurrent.*;\n\npublic class ForceMaxThreadPool {\n\n    public static void main(String&#91;] args) {\n        ThreadPoolExecutor executor = new ThreadPoolExecutor(\n                2,                      \/\/ corePoolSize\n                5,                      \/\/ maximumPoolSize\n                60L, TimeUnit.SECONDS, \/\/ keepAliveTime\n                new SynchronousQueue&lt;&gt;(), \/\/ \u2705 \u65e0\u961f\u5217\uff0c\u4efb\u52a1\u4e0d\u4f1a\u6392\u961f\n                Executors.defaultThreadFactory(),\n                new ThreadPoolExecutor.AbortPolicy() \/\/ \u53ef\u6362\u6210 CallerRunsPolicy \u7b49\n        );\n\n        \/\/ \u63d0\u4ea4 6 \u4e2a\u4efb\u52a1\uff08&gt; maxPoolSize = 5 \u4f1a\u88ab\u62d2\u7edd\uff09\n        for (int i = 0; i &lt; 6; i++) {\n            int taskId = i;\n            executor.execute(() -&gt; {\n                System.out.println(Thread.currentThread().getName() + \" \u6267\u884c\u4efb\u52a1 \" + taskId);\n                try {\n                    Thread.sleep(3000);\n                } catch (InterruptedException e) {\n                    Thread.currentThread().interrupt();\n                }\n            });\n        }\n\n        executor.shutdown();\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa\u89c2\u5bdf\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7ebf\u7a0b\u6c60\u7acb\u5373\u521b\u5efa\u65b0\u7ebf\u7a0b\u5904\u7406\u4efb\u52a1<\/strong><\/li>\n\n\n\n<li><strong>\u4e0d\u6392\u961f\uff0c\u53ea\u8981\u6ca1\u8fbe\u5230\u6700\u5927\u7ebf\u7a0b\u6570\u5c31\u521b\u5efa\u65b0\u7ebf\u7a0b<\/strong><\/li>\n\n\n\n<li><strong>\u8d85\u8fc7\u6700\u5927\u7ebf\u7a0b\u6570\u7684\u4efb\u52a1\u5c06\u89e6\u53d1\u62d2\u7edd\u7b56\u7565<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u62d3\u5c55\u8bf4\u660e\uff1a\u4e3a\u4ec0\u4e48\u9ed8\u8ba4\u4f1a\u6392\u961f\uff1f<\/h2>\n\n\n\n<p>Java \u7684\u9ed8\u8ba4 <code>newFixedThreadPool()<\/code> \u4f7f\u7528\u7684\u662f <code>LinkedBlockingQueue<\/code>\uff0c\u5b83\u662f<strong>\u65e0\u754c\u961f\u5217<\/strong>\uff08Integer.MAX_VALUE\uff09\uff0c\u6240\u4ee5\u9664\u975e\u4efb\u52a1\u7206\u6ee1\u5bfc\u81f4\u5185\u5b58\u95ee\u9898\uff0c\u5426\u5219<strong>\u4e0d\u4f1a\u89e6\u53d1\u65b0\u7ebf\u7a0b\u7684\u521b\u5efa\u6216\u62d2\u7edd\u7b56\u7565<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u4e8b\u9879<\/th><th>\u5efa\u8bae<\/th><\/tr><\/thead><tbody><tr><td>\u4f7f\u7528 <code>SynchronousQueue<\/code> \u624d\u80fd\u8df3\u8fc7\u6392\u961f<\/td><td><\/td><\/tr><tr><td>\u5408\u7406\u8bbe\u7f6e <code>maximumPoolSize<\/code>\uff0c\u9632\u6b62\u7ebf\u7a0b\u7206\u70b8<\/td><td><\/td><\/tr><tr><td>\u914d\u7f6e\u5408\u9002\u7684\u62d2\u7edd\u7b56\u7565\uff08\u5982 <code>CallerRunsPolicy<\/code>\uff09\u6765\u907f\u514d\u4e22\u4efb\u52a1<\/td><td><\/td><\/tr><tr><td>\u53ef\u914d\u5408\u7ebf\u7a0b\u6c60\u76d1\u63a7\u5de5\u5177\u89c2\u5bdf\u52a8\u6001\u7ebf\u7a0b\u6570\u53d8\u5316<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u6587\u6863<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/util\/concurrent\/ThreadPoolExecutor.html\">ThreadPoolExecutor \u5b98\u65b9\u6587\u6863<\/a><\/li>\n\n\n\n<li>\u300aJava \u5e76\u53d1\u7f16\u7a0b\u5b9e\u6218\u300b\u7b2c 8 \u7ae0\uff1a\u7ebf\u7a0b\u6c60\u8bbe\u8ba1<\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/openjdk\/jdk\/blob\/master\/src\/java.base\/share\/classes\/java\/util\/concurrent\/ThreadPoolExecutor.java\">Java \u6e90\u7801\u5206\u6790 ThreadPoolExecutor \u7b56\u7565<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u60f3\u8981\u201c\u4efb\u52a1\u6570\u8d85\u8fc7\u6838\u5fc3\u7ebf\u7a0b\u6570\u65f6\u7acb\u5373\u521b\u5efa\u65b0\u7ebf\u7a0b\u201d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5fc5\u987b\u4f7f\u7528 <code>SynchronousQueue<\/code> \u66ff\u4ee3\u4efb\u52a1\u961f\u5217<\/strong>\uff1b<\/li>\n\n\n\n<li><strong>\u8ba9\u7ebf\u7a0b\u6c60\u76f4\u63a5\u6269\u5bb9\u7ebf\u7a0b\uff0c\u800c\u4e0d\u662f\u5148\u6392\u961f<\/strong>\uff1b<\/li>\n\n\n\n<li><strong>\u8fd9\u662f\u5b9e\u73b0\u7c7b\u4f3c\u7f13\u5b58\u7ebf\u7a0b\u6c60\u884c\u4e3a\u7684\u6700\u4f73\u5b9e\u8df5\u65b9\u5f0f\u4e4b\u4e00<\/strong>\u3002<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u5b9e\u6218\u4e14\u5173\u952e\u7684\u7ebf\u7a0b\u6c60\u8c03\u4f18\u95ee\u9898\u3002Java \u7684\u7ebf\u7a0b\u6c60\u9ed8\u8ba4\u884c\u4e3a\u662f\uff1a \u5f53\u4efb\u52a1\u6570\u8d85\u8fc7 corePoolSize [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3992,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68,86],"tags":[],"class_list":["post-3991","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","category-java-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3991"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3991\/revisions"}],"predecessor-version":[{"id":3993,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3991\/revisions\/3993"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3992"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}