{"id":202841,"date":"2025-05-22T08:25:36","date_gmt":"2025-05-22T00:25:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202841\/"},"modified":"2025-05-22T08:25:36","modified_gmt":"2025-05-22T00:25:36","slug":"%e5%bd%b1%e5%93%8d-java-%e5%87%bd%e6%95%b0%e6%89%a7%e8%a1%8c%e6%95%88%e7%8e%87%e7%9a%84%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86%e5%9b%a0%e7%b4%a0%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202841\/","title":{"rendered":"\u5f71\u54cd Java \u51fd\u6570\u6267\u884c\u6548\u7387\u7684\u5185\u5b58\u7ba1\u7406\u56e0\u7d20\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f71\u54cd Java \u51fd\u6570\u6267\u884c\u6548\u7387\u7684\u5185\u5b58\u7ba1\u7406\u56e0\u7d20\u6709\u54ea\u4e9b\uff1f<\/h1>\n

\u76ee\u524d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e\u6587\u7ae0<\/span>\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\u300a\u5f71\u54cd Java \u51fd\u6570\u6267\u884c\u6548\u7387\u7684\u5185\u5b58\u7ba1\u7406\u56e0\u7d20\u6709\u54ea\u4e9b\uff1f\u300b<\/span>\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60\u6587\u7ae0<\/span>\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n

\u5185\u5b58\u7ba1\u7406\u56e0\u7d20\u5bf9 Java \u51fd\u6570\u6267\u884c\u6548\u7387\u81f3\u5173\u91cd\u8981\uff0c\u5305\u62ec\uff1a\u5bf9\u8c61\u5206\u914d\u4f18\u5316\u53ef\u907f\u514d\u5806\u5185\u5b58\u788e\u7247\u5316\u3002\u53ca\u65f6\u6e05\u9664\u5bf9\u8c61\u5f15\u7528\u91ca\u653e\u5185\u5b58\u3002\u907f\u514d\u5f15\u7528\u6cc4\u6f0f\uff0c\u786e\u4fdd\u4e0d\u518d\u4f7f\u7528\u7684\u5bf9\u8c61\u88ab\u56de\u6536\u3002\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u9700\u6c42\u8c03\u6574 GC \u7b97\u6cd5\u548c\u53c2\u6570\u4f18\u5316\u5185\u5b58\u56de\u6536\u3002\u4f7f\u7528\u5185\u5b58\u5206\u6790\u5de5\u5177\u68c0\u6d4b\u548c\u89e3\u51b3\u5185\u5b58\u6cc4\u6f0f\uff0c\u9632\u6b62\u5185\u5b58\u6d88\u8017\u548c\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n

<\/p>\n

\u5f71\u54cd Java \u51fd\u6570\u6267\u884c\u6548\u7387\u7684\u5185\u5b58\u7ba1\u7406\u56e0\u7d20<\/strong><\/p>\n

\u5185\u5b58\u7ba1\u7406\u5bf9\u4e8e Java \u51fd\u6570\u7684\u6267\u884c\u6548\u7387\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u56e0\u7d20\u53ef\u80fd\u4f1a\u5f71\u54cd Java \u51fd\u6570\u7684\u5185\u5b58\u4f7f\u7528\u548c\u6027\u80fd\uff1a<\/p>\n

1. \u5bf9\u8c61\u5206\u914d<\/strong><\/p>\n

\u6bcf\u6b21\u521b\u5efa\u65b0\u5bf9\u8c61\u65f6\uff0cJava \u865a\u62df\u673a (JVM) \u90fd\u4f1a\u4ece\u5806\u5185\u5b58\u4e2d\u5206\u914d\u5185\u5b58\u3002\u8fc7\u5ea6\u9891\u7e41\u7684\u5bf9\u8c61\u5206\u914d\u53ef\u80fd\u5bfc\u81f4\u5806\u5185\u5b58\u788e\u7247\u5316\uff0c\u4ece\u800c\u964d\u4f4e GC \u6027\u80fd\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong>\u907f\u514d\u5728\u5faa\u73af\u6216\u5bc6\u96c6\u8ba1\u7b97\u4e2d\u9891\u7e41\u521b\u5efa\u4e34\u65f6\u5bf9\u8c61\u3002\u76f8\u53cd\uff0c\u53ef\u4ee5\u91cd\u7528\u73b0\u6709\u5bf9\u8c61\u6216\u4f7f\u7528\u5bf9\u8c61\u6c60\u3002<\/p>\n

2. \u5bf9\u8c61\u5f15\u7528<\/strong><\/p>\n

\u5bf9\u5bf9\u8c61\u7684\u5f15\u7528\u4f1a\u4fdd\u7559\u5bf9\u5bf9\u8c61\u7684\u5185\u5b58\u5730\u5740\u7684\u6307\u9488\u3002\u5982\u679c\u5bf9\u8c61\u4e0d\u518d\u9700\u8981\uff0c\u5219\u5e94\u663e\u5f0f\u5730\u5c06\u5f15\u7528\u8bbe\u7f6e\u4e3a null<\/code>\uff0c\u4ee5\u4fbf JVM \u53ef\u4ee5\u91ca\u653e\u5185\u5b58\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong>\u5728\u5b8c\u6210\u4e0e\u5bf9\u8c61\u7684\u4ea4\u4e92\u540e\uff0c\u7acb\u5373\u53d6\u6d88\u5bf9\u5b83\u4eec\u7684\u5f15\u7528\u3002\u4f8b\u5982\uff0c\u5728\u51fd\u6570\u7ed3\u675f\u65f6\u5c06\u5176\u8bbe\u7f6e\u4e3a null<\/code>\u3002<\/p>\n

3. \u5f15\u7528\u6cc4\u6f0f<\/strong><\/p>\n

\u5f53\u4e00\u4e2a\u5bf9\u8c61\u65e0\u6cd5\u518d\u88ab\u8bbf\u95ee\uff0c\u4f46\u4ecd\u88ab\u5f15\u7528\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u5f15\u7528\u6cc4\u6f0f\u3002\u8fd9\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\uff0c\u56e0\u4e3a JVM \u65e0\u6cd5\u91ca\u653e\u8be5\u5bf9\u8c61\u5360\u7528\u7684\u5185\u5b58\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong>\u4f7f\u7528 try-with-resources \u8bed\u53e5\u7ba1\u7406\u8d44\u6e90\uff0c\u786e\u4fdd\u5728\u4f7f\u7528\u540e\u81ea\u52a8\u91ca\u653e\u5bf9\u8c61\u3002\u8fd8\u5e94\u907f\u514d\u5728\u7c7b\u4e2d\u4fdd\u7559\u5bf9\u5916\u90e8\u5bf9\u8c61\u7684\u957f\u671f\u5f15\u7528\u3002<\/p>\n

4. \u5783\u573e\u56de\u6536<\/strong><\/p>\n

JVM \u5b9a\u671f\u8fd0\u884c\u5783\u573e\u56de\u6536\u5668 (GC) \u6765\u56de\u6536\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\u3002GC \u7b97\u6cd5\u548c\u53c2\u6570\u4f1a\u5f71\u54cd\u5185\u5b58\u7ba1\u7406\u7684\u6548\u7387\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong>\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u8981\u8c03\u6574 JVM \u7684 GC \u53c2\u6570\uff0c\u4f8b\u5982\u4f7f\u7528\u5e76\u884c GC \u6216\u8c03\u4f18\u5806\u5185\u5b58\u5927\u5c0f\u3002<\/p>\n

5. \u5185\u5b58\u6cc4\u6f0f<\/strong><\/p>\n

\u5185\u5b58\u6cc4\u6f0f\u662f\u6307\u7531\u4ee3\u7801\u7f3a\u9677\u5bfc\u81f4\u5bf9\u8c61\u957f\u65f6\u95f4\u5b58\u5728\u4e8e\u5185\u5b58\u4e2d\u7684\u60c5\u51b5\u3002\u8fd9\u4f1a\u6d88\u8017\u5927\u91cf\u5185\u5b58\u5e76\u635f\u5bb3\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong>\u4f7f\u7528\u5185\u5b58\u5206\u6790\u5668\u5de5\u5177\uff0c\u4f8b\u5982 jvisualvm \u6216 JProfiler\uff0c\u4ee5\u68c0\u6d4b\u548c\u8bca\u65ad\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\u3002<\/p>\n

\u901a\u8fc7\u4e86\u89e3\u5e76\u7ba1\u7406\u8fd9\u4e9b\u56e0\u7d20\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6539\u5584 Java \u51fd\u6570\u7684\u5185\u5b58\u7ba1\u7406\uff0c\u63d0\u9ad8\u5176\u6267\u884c\u6548\u7387\u3002<\/p>\n

\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5f71\u54cd Java \u51fd\u6570\u6267\u884c\u6548\u7387\u7684\u5185...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202841","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202841"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202841\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}