{"id":202845,"date":"2025-05-22T11:18:46","date_gmt":"2025-05-22T03:18:46","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202845\/"},"modified":"2025-05-22T11:18:46","modified_gmt":"2025-05-22T03:18:46","slug":"java%e5%87%bd%e6%95%b0%e7%9a%84%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e5%92%8c%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202845\/","title":{"rendered":"Java\u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u548c\u5206\u6790"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u548c\u5206\u6790<\/h1>\n<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava\u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u548c\u5206\u6790\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01<\/p>\n<p>Java \u51fd\u6570\u6027\u80fd\u4f18\u5316\u548c\u5206\u6790\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u5206\u6790\u51fd\u6570\u4f7f\u7528\uff1a\u4f7f\u7528\u5256\u6790\u5de5\u5177\u548c\u4ee3\u7801\u5ba1\u67e5\u6765\u8bc6\u522b\u6027\u80fd\u74f6\u9888\u3002\u4f18\u5316\u6280\u672f\uff1a\u91cd\u6784\u4ee3\u7801\u3001\u4f18\u5316\u7b97\u6cd5\u3001\u5e76\u884c\u5316\u3001\u5185\u5b58\u7ba1\u7406\u548c\u7f13\u5b58\u6765\u63d0\u9ad8\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u4f7f\u7528Apache Commons Lang\u7684StringUtils.split()\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f18\u5316splitString()\u51fd\u6570\u6027\u80fd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729949688671ceff8cec3a.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u548c\u5206\u6790<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u51fd\u6570\u7684\u6027\u80fd\u5bf9\u4e8e\u5e94\u7528\u7a0b\u5e8f\u7684\u6574\u4f53\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u4f18\u5316\u51fd\u6570\uff0c\u53ef\u4ee5\u51cf\u5c11\u6267\u884c\u65f6\u95f4\u5e76\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u54cd\u5e94\u80fd\u529b\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5206\u6790\u548c\u4f18\u5316 Java \u51fd\u6570\u6027\u80fd\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u5206\u6790\u51fd\u6570<\/strong><\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5256\u6790\u5de5\u5177\uff1a<\/strong>\u4f7f\u7528 Java VisualVM \u6216 JProfiler \u7b49\u5de5\u5177\u6765\u5206\u6790\u51fd\u6570\u7684\u6027\u80fd\u3002\u8fd9\u4e9b\u5de5\u5177\u53ef\u4ee5\u663e\u793a\u51fd\u6570\u8c03\u7528\u7684\u65f6\u95f4\u548c\u5185\u5b58\u6d88\u8017\u3002<\/li>\n<li><strong>\u4ee3\u7801\u5ba1\u67e5\uff1a<\/strong>\u624b\u52a8\u5ba1\u67e5\u4ee3\u7801\u4ee5\u8bc6\u522b\u53ef\u80fd\u9020\u6210\u6027\u80fd\u74f6\u9888\u7684\u533a\u57df\uff0c\u4f8b\u5982\u5d4c\u5957\u5faa\u73af\u3001\u9012\u5f52\u548c\u5927\u91cf\u7684 I\/O \u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p><strong>2. \u4f18\u5316\u6280\u672f<\/strong><\/p>\n<ul>\n<li><strong>\u91cd\u6784\u4ee3\u7801\uff1a<\/strong>\u91cd\u6784\u4ee3\u7801\u4ee5\u6d88\u9664\u5197\u4f59\u548c\u63d0\u9ad8\u6e05\u6670\u5ea6\u3002\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u53ef\u8bfb\u6027\u5e76\u51cf\u5c11\u56e0\u4e0d\u5fc5\u8981\u7684\u590d\u6742\u6027\u9020\u6210\u7684\u6027\u80fd\u635f\u5931\u3002<\/li>\n<li><strong>\u4f18\u5316\u7b97\u6cd5\uff1a<\/strong>\u8003\u8651\u4f7f\u7528\u66f4\u6709\u6548\u7684\u7b97\u6cd5\u6765\u6267\u884c\u7279\u5b9a\u7684\u4efb\u52a1\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4e8c\u5206\u641c\u7d22\u4ee3\u66ff\u7ebf\u6027\u641c\u7d22\u6765\u67e5\u627e\u5143\u7d20\u3002<\/li>\n<li><strong>\u5e76\u884c\u5316\uff1a<\/strong>\u5982\u679c\u51fd\u6570\u53ef\u4ee5\u5e76\u884c\u5316\uff0c\u53ef\u4ee5\u4f7f\u7528 Java \u4e2d\u7684 <code>Fork\/Join<\/code> \u6846\u67b6\u6216 <code>ExecutorService<\/code>\u3002\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u591a\u6838 CPU \u4e0a\u7684\u6027\u80fd\u3002<\/li>\n<li><strong>\u5185\u5b58\u7ba1\u7406\uff1a<\/strong>\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u4ee5\u907f\u514d\u5bf9\u8c61\u5206\u914d\u548c\u5783\u573e\u56de\u6536\u5f00\u9500\u3002\u8003\u8651\u4f7f\u7528\u6c60\u5316\u5bf9\u8c61\u6216\u4f7f\u7528\u6bd4\u6570\u7ec4\u66f4\u6709\u6548\u7684\u96c6\u5408\u7c7b\u578b\u3002<\/li>\n<li><strong>\u7f13\u5b58\uff1a<\/strong>\u5bf9\u4e8e\u7ecf\u5e38\u8c03\u7528\u7684\u6570\u636e\u6216\u5bf9\u8c61\uff0c\u4f7f\u7528\u7f13\u5b58\u53ef\u4ee5\u663e\u7740\u63d0\u9ad8\u6027\u80fd\u3002\u8fd9\u53ef\u4ee5\u51cf\u5c11\u6570\u636e\u5e93\u6216\u6587\u4ef6\u7cfb\u7edf\u7b49\u5916\u90e8\u8d44\u6e90\u7684\u8bbf\u95ee\u6b21\u6570\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b Java \u51fd\u6570\uff1a<\/p>\n<pre>public static String[] splitString(String input, String delimiter) {\n    String[] result = new String[0];\n    if (input != null &amp;&amp; delimiter != null) {\n        result = input.split(delimiter);\n    }\n    return result;\n}<\/pre>\n<p>\u901a\u8fc7\u4f7f\u7528\u5256\u6790\u5de5\u5177\u5206\u6790\u8be5\u51fd\u6570\uff0c\u53d1\u73b0 <code>split()<\/code> \u65b9\u6cd5\u662f\u6700\u8017\u65f6\u7684\u3002\u4e3a\u4e86\u4f18\u5316\u6027\u80fd\uff0c\u53ef\u4ee5\u4f7f\u7528 Apache Commons Lang \u63d0\u4f9b\u7684\u9ad8\u6548\u7684 <code>StringUtils.split()<\/code> \u65b9\u6cd5\uff1a<\/p>\n<pre>public static String[] splitString(String input, String delimiter) {\n    if (input != null &amp;&amp; delimiter != null) {\n        return StringUtils.split(input, delimiter);\n    }\n    return new String[0];\n}<\/pre>\n<p>\u4f7f\u7528 Apache Commons Lang \u7684 <code>StringUtils.split()<\/code> \u65b9\u6cd5\u540e\uff0c\u51fd\u6570\u7684\u6027\u80fd\u663e\u7740\u63d0\u9ad8\u3002<\/p>\n<p>\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":"<p>Java\u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u548c\u5206\u6790 \u5077&#46;&#46;&#46;<\/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-202845","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202845","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=202845"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202845\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}