{"id":919,"date":"2014-05-15T22:18:35","date_gmt":"2014-05-15T14:18:35","guid":{"rendered":"http:\/\/coderbee.net\/?p=919"},"modified":"2014-05-15T22:21:20","modified_gmt":"2014-05-15T14:21:20","slug":"java-se-6-%e6%95%85%e9%9a%9c%e6%8e%92%e9%99%a4%e6%8c%87%e5%8d%97-3%e3%80%81%e5%86%85%e5%ad%98%e6%b3%84%e9%9c%b2","status":"publish","type":"post","link":"https:\/\/coderbee.net\/index.php\/jvm\/20140515\/919","title":{"rendered":"Java SE 6 \u6545\u969c\u6392\u9664\u6307\u5357 &#8211; 3\u3001\u5185\u5b58\u6cc4\u9732"},"content":{"rendered":"<h1>\u5185\u5b58\u6cc4\u9732\u6545\u969c\u6392\u9664<\/h1>\n<p>\u5982\u679c\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u6267\u884c\u7684\u65f6\u95f4\u8d8a\u6765\u8d8a\u957f\uff0c\u6216\u5982\u679c\u64cd\u4f5c\u7cfb\u7edf\u6267\u884c\u8d8a\u6765\u8d8a\u6162\uff0c\u8fd9\u53ef\u80fd\u662f\u5185\u5b58\u6cc4\u9732\u7684\u6307\u793a\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u865a\u62df\u5185\u5b58\u88ab\u5206\u914d\u4f46\u5728\u4e0d\u9700\u8981\u65f6\u6ca1\u6709\u5f52\u8fd8\u3002\u6700\u7ec8\u5e94\u7528\u7a0b\u5e8f\u6216\u7cfb\u7edf\u6ca1\u6709\u53ef\u7528\u5185\u5b58\uff0c\u5e94\u7528\u7a0b\u5e8f\u975e\u6b63\u5e38\u7ec8\u6b62\u3002<\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6d89\u53ca\u5185\u5b58\u6cc4\u9732\u7684\u95ee\u9898\u8bca\u65ad\u7684\u5efa\u8bae\u3002<\/p>\n<h2>3.1  OutOfMemoryError \u7684\u542b\u4e49<\/h2>\n<p>\u4e00\u4e2a\u6700\u5e38\u89c1\u7684\u5185\u5b58\u6cc4\u9732\u7684\u6307\u793a\u662f java.lang.OutOfMemoryError \u9519\u8bef\u3002\u8fd9\u4e2a\u9519\u8bef\u5728Java\u5806\u6216\u5806\u7684\u7279\u5b9a\u533a\u57df\u6ca1\u6709\u8db3\u591f\u7a7a\u95f4\u7528\u4e8e\u5206\u914d\u5bf9\u8c61\u65f6\u629b\u51fa\u3002\u5783\u573e\u6536\u96c6\u5668\u4e0d\u80fd\u521b\u9020\u66f4\u591a\u53ef\u7528\u7a7a\u95f4\u6765\u5bb9\u7eb3\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u5806\u4e5f\u4e0d\u80fd\u6269\u5c55\u3002<\/p>\n<p>\u5f53 java.lang.OutOfMemoryError \u9519\u8bef\u629b\u51fa\u65f6\uff0c\u6808\u8f68\u8ff9\u4e5f\u4f1a\u88ab\u6253\u5370\u3002<\/p>\n<p>java.lang.OutOfMemoryError \u4e5f\u53ef\u4ee5\u88ab\u672c\u5730\u5e93\u4ee3\u7801\u629b\u51fa\uff0c\u5f53\u672c\u5730\u5206\u914d\u4e0d\u80fd\u6ee1\u8db3\u65f6\uff0c\u4f8b\u5982\uff0c\u4ea4\u6362\u7a7a\u95f4\u5f88\u4f4e\u3002<\/p>\n<p>\u8bca\u65ad java.lang.OutOfMemoryError \u7684\u4e00\u4e2a\u65e9\u671f\u6b65\u9aa4\u662f\u786e\u5b9a\u9519\u8bef\u7684\u542b\u4e49\u3002\u5b83\u662f\u5426\u610f\u5473\u7740Java\u5806\u6ee1\u4e86\uff0c\u6216\u610f\u5473\u7740\u672c\u5730\u5806\u6ee1\u4e86\uff1f\u4e3a\u5e2e\u52a9\u4f60\u56de\u7b54\u8fd9\u4e2a\u95ee\u9898\uff0c\u4e0b\u9762\u7684\u5b50\u7ae0\u8282\u89e3\u91ca\u4e86\u4e00\u4e9b\u53ef\u80fd\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u8fd8\u6709\u8fde\u63a5\u5230\u66f4\u8be6\u7ec6\u4fe1\u606f\u7684\u94fe\u63a5\uff1a<\/p>\n<p><!--more--><\/p>\n<ul>\n<li>&#8220;main&#8221; \u7ebf\u7a0b\u91cc\u7684 java.lang.OutOfMemoryError \u5f02\u5e38\uff1aJava \u5806\u7a7a\u95f4\u3002\u8be6\u89c1 3.1.1\u3002<\/li>\n<li>&#8220;main&#8221; \u7ebf\u7a0b\u91cc\u7684 java.lang.OutOfMemoryError \u5f02\u5e38\uff1aJava PermGen\u7a7a\u95f4\u3002\u8be6\u89c1 3.1.2\u3002<\/li>\n<li>&#8220;main&#8221; \u7ebf\u7a0b\u91cc\u7684 java.lang.OutOfMemoryError \u5f02\u5e38\uff1a\u8bf7\u6c42\u7684\u6570\u7ec4\u5927\u5c0f\u8d85\u8fc7VM\u9650\u5236\u3002\u8be6\u89c1 3.1.3\u3002<\/li>\n<li>&#8220;main&#8221; \u7ebf\u7a0b\u91cc\u7684 java.lang.OutOfMemoryError \u5f02\u5e38\uff1a<code>request &lt;size&gt; bytes for &lt;reason&gt;. Out of swap space?<\/code><\/li>\n<li>request <size> bytes for <reason>. Out of swap space?  \u8be6\u89c1 3.1.4<\/li>\n<li>&#8220;main&#8221; \u7ebf\u7a0b\u91cc\u7684 java.lang.OutOfMemoryError \u5f02\u5e38\uff1a<code>java.lang.OutOfMemoryError: &lt;reason&gt; &lt;stack trace&gt; (Native method)<\/code>\uff0c\u8be6\u89c1 3.1.5<\/li>\n<\/ul>\n<h3>3.1.1  Java\u5806\u7a7a\u95f4\u8be6\u7ec6\u4fe1\u606f<\/h3>\n<p>Java\u5806\u7a7a\u95f4\u8be6\u7ec6\u4fe1\u606f\u6307\u51fa\u4e86\u5bf9\u8c61\u4e0d\u80fd\u518dJava\u91cc\u5206\u914d\u3002\u8fd9\u4e2a\u9519\u8bef\u4e0d\u662f\u5fc5\u7136\u8868\u793a\u5185\u5b58\u6cc4\u9732\u3002\u8fd9\u4e2a\u95ee\u9898\u53ef\u80fd\u4ec5\u4ec5\u53ea\u662f\u914d\u7f6e\u95ee\u9898\uff0c\u6307\u5b9a\u7684\u5806\u5927\u5c0f\u4e0d\u80fd\u6ee1\u8db3\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u5728\u5176\u4ed6\u60c5\u51b5\u4e0b\uff0c\u7279\u522b\u662f\u957f\u671f\u5b58\u6d3b\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u8fd9\u4e2a\u6d88\u606f\u53ef\u80fd\u6307\u793a\u4e86\u5e94\u7528\u7a0b\u5e8f\u65e0\u610f\u5730\u6301\u6709\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u8fd9\u5bfc\u81f4\u5bf9\u8c61\u4e0d\u80fd\u88ab\u5783\u573e\u6536\u96c6\u3002\u8fd9\u662fJava\u8bed\u8a00\u7b49\u4ef7\u7684\u5185\u5b58\u6cc4\u9732\u3002\u6ce8\u610f\uff0c\u5e94\u7528\u7a0b\u5e8f\u8c03\u7528\u7684API\u4e5f\u53ef\u80fd\u65e0\u610f\u5730\u6301\u6709\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u6f5c\u5728\u7684\u53ef\u80fd\u629b\u51fa OutOfMemoryError \u7684\u6765\u6e90\u662f\u5e94\u7528\u7a0b\u5e8f\u8fc7\u591a\u4f7f\u7528finalizer\u3002\u5982\u679c\u7c7b\u6709 finalize \u65b9\u6cd5\uff0c\u90a3\u4e48\u90a3\u79cd\u7c7b\u578b\u7684\u5bf9\u8c61\u5728\u5783\u573e\u6536\u96c6\u65f6\u4e0d\u56de\u6536\u5b83\u4eec\u7684\u7a7a\u95f4\u3002\u800c\u662f\uff0c\u5728\u5783\u573e\u6536\u96c6\u540e\uff0c\u5bf9\u8c61\u6392\u961f\u7b49\u5f85 finalization\uff0c\u8fd9\u5728\u7a0d\u540e\u7684\u65f6\u95f4\u53d1\u751f\u3002\u5728 Sun \u7684\u5b9e\u73b0\u91cc\uff0cfinalizer\u7531\u4e00\u4e2a\u5b88\u62a4\u7ebf\u7a0b\u6267\u884c\uff0c\u670d\u52a1\u4e8e finalization \u961f\u5217\u3002\u5982\u679c finalizer \u7ebf\u7a0b\u4e0d\u80fd\u8ddf\u4e0a finalization \u961f\u5217\uff0c\u90a3\u4e48Java\u5806\u5c06\u5145\u6ee1\uff0c OutOfMemoryError \u5c06\u88ab\u629b\u51fa\u3002\u5bfc\u81f4\u6298\u8877\u60c5\u51b5\u7684\u4e00\u4e2a\u60c5\u666f\u662f\u5e94\u7528\u7a0b\u5e8f\u521b\u5efa\u9ad8\u4f18\u5148\u7ea7\u7ebf\u7a0b\uff0c\u5bfc\u81f4finalization \u961f\u5217\u589e\u52a0\u7684\u901f\u7387\u5feb\u4e8e finalizer \u7ebf\u7a0b\u670d\u52a1\u90a3\u4e2a\u961f\u5217\u7684\u901f\u7387\u30023.3.6\u8282\u8ba8\u8bba\u4e86\u5982\u4f55\u7ba1\u7406\u7b49\u5f85finalization\u7684\u5bf9\u8c61\u3002<\/p>\n<h3>3.1.2  PermGen \u7a7a\u95f4\u8be6\u7ec6\u4fe1\u606f<\/h3>\n<p>PermGen \u7a7a\u95f4\u8be6\u7ec6\u4fe1\u606f\u6307\u793a\u4e86\u6c38\u4e45\u4ee3\u662f\u6ee1\u7684\u3002\u6c38\u4e45\u4ee3\u662f\u5806\u7684\u4e00\u5757\u533a\u57df\uff0c\u5b58\u50a8\u4e86\u7c7b\u548c\u65b9\u6cd5\u5bf9\u8c61\uff08\u5143\u6570\u636e\uff09\u3002\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u52a0\u8f7d\u4e86\u5927\u91cf\u7684\u7c7b\uff0c\u90a3\u4e48\u6c38\u4e45\u4ee3\u7684\u5927\u5c0f\u53ef\u80fd\u9700\u8981\u589e\u52a0\uff0c\u7528 <code>-XX:MaxPermSize<\/code> \u9009\u9879\u3002<\/p>\n<p>interned\u7684 java.lang.String \u5bf9\u8c61\u4e5f\u5b58\u50a8\u5728\u6c38\u4e45\u4ee3\u3002java.lang.String \u7c7b\u7ef4\u6301\u4e86\u4e00\u4e2a\u5b57\u7b26\u4e32\u6c60\u3002\u5f53 <code>intern<\/code> \u65b9\u6cd5\u8c03\u7528\u65f6\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u68c0\u67e5\u6c60\u6765\u770b\u7b49\u4ef7\u7684\u5b57\u7b26\u4e32\u662f\u5426\u5df2\u5b58\u5728\u4e8e\u6c60\u91cc\u3002\u66f4\u51c6\u786e\u7684\u89d2\u5ea6\uff0c<code>java.lang.String.intern<\/code> \u65b9\u6cd5\u7528\u4e8e\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u6807\u51c6\u8868\u793a\uff0c\u7ed3\u679c\u662f\u540c\u4e00\u7c7b\u7684\u5b9e\u4f8b\u7684\u5f15\u7528\u5c06\u88ab\u8fd4\u56de\uff0c\u5982\u679c\u5b57\u7b26\u4e32\u4f5c\u4e3a\u6807\u91cf\u51fa\u73b0\u3002\u5982\u679c\u5e94\u7528\u7a0b\u5e8fintern\u4e86\u5927\u91cf\u7684\u5b57\u7b26\u4e32\uff0c\u6c38\u4e45\u4ee3\u53ef\u80fd\u9700\u8981\u589e\u957f\u3002<\/p>\n<p>\u5f53\u8fd9\u7c7b\u9519\u8bef\u53d1\u751f\u65f6\uff0c\u6587\u672c <code>String.intern<\/code> \u6216 <code>ClassLoader.defineClass<\/code> \u53ef\u80fd\u51fa\u73b0\u5728\u6808\u8f68\u8ff9\u7684\u9644\u8fd1\u3002<\/p>\n<p><code>jmap -permgen<\/code> \u547d\u4ee4\u6253\u5370\u6c38\u4e45\u4ee3\u91cc\u5bf9\u8c61\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u5305\u62ec internalized \u7684\u5b57\u7b26\u4e32\u5b9e\u4f8b\u4fe1\u606f\u3002\u89c1 2.7.4 \u83b7\u53d6\u6c38\u4e45\u4ee3\u4fe1\u606f\u3002<\/p>\n<h3>3.1.3  \u8bf7\u6c42\u7684\u6570\u7ec4\u5927\u5c0f\u8d85\u8fc7VM\u9650\u5236 \u8be6\u7ec6\u4fe1\u606f<\/h3>\n<p>&#8220;\u8bf7\u6c42\u7684\u6570\u7ec4\u5927\u5c0f\u8d85\u8fc7VM\u9650\u5236&#8221; \u8be6\u7ec6\u4fe1\u606f\u6307\u793a\u4e86\u5e94\u7528\u7a0b\u5e8f\u5c1d\u8bd5\u5206\u914d\u4e00\u4e2a\u6570\u7ec4\uff0c\u5b83\u7684\u5927\u5c0f\u5927\u4e8e\u5806\u7684\u5927\u5c0f\u3002\u4f8b\u5982\uff0c\u5e94\u7528\u7a0b\u5e8f\u5c1d\u8bd5\u5206\u914d 512MB \u7684\u6570\u7ec4\uff0c\u4f46\u5806\u5927\u5c0f\u7684\u6700\u5927\u503c\u662f 256MB\uff0c\u90a3\u4e48 OutOfMemoryError \u5c06\u4ee5 &#8220;\u8bf7\u6c42\u7684\u6570\u7ec4\u5927\u5c0f\u8d85\u8fc7VM\u9650\u5236&#8221; \u7684\u7406\u7531\u629b\u51fa\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e2a\u95ee\u9898\u8981\u4e48\u662f\u914d\u7f6e\u95ee\u9898\uff0c\u8981\u4e48\u662f\u5e94\u7528\u7a0b\u5e8f\u7684bug\uff0c\u5c1d\u8bd5\u521b\u5efa\u4e00\u4e2a\u8d85\u7ea7\u5927\u7684\u6570\u7ec4\u3002<\/p>\n<h3>3.1.4  <code>request &lt;size&gt; bytes for &lt;reason&gt;. Out of swap space?<\/code> \u8be6\u7ec6\u4fe1\u606f<\/h3>\n<p>\u8fd9\u4e2a\u4fe1\u606f\u4ee5 OutOfMemoryError \u5f62\u5f0f\u51fa\u73b0\u3002\u7136\u800c\uff0cHotSpot VM\u4ee3\u7801\u62a5\u544a\u8fd9\u4e2a\u8868\u9762\u5f02\u5e38\uff0c\u5f53\u4ece\u672c\u5730\u5806\u5206\u914d\u5931\u8d25\u548c\u672c\u5730\u5806\u53ef\u80fd\u63a5\u8fd1\u8017\u5c3d\u3002\u8fd9\u4e2a\u6d88\u606f\u6307\u793a\u4e86\u5931\u8d25\u7684\u8bf7\u6c42\u7684\u5927\u5c0f\uff08\u6309\u5b57\u8282\uff09\uff0c\u548c\u5185\u5b58\u8bf7\u6c42\u7684\u7406\u7531\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u6d88\u606f\u7684 <code>&lt;reason&gt;<\/code> \u90e8\u5206\u662f\u62a5\u544a\u5206\u914d\u5931\u8d25\u7684\u6e90\u6a21\u5757\u7684\u540d\u5b57\uff0c\u867d\u7136\u6709\u4e9b\u60c5\u51b5\u4e0b\u5b83\u6307\u793a\u4e86\u7406\u7531\u3002<\/p>\n<p>\u5f53\u8fd9\u4e2a\u9519\u8bef\u6d88\u606f\u88ab\u629b\u51fa\u65f6\uff0cVM\u53d1\u8d77\u81f4\u547d\u9519\u8bef\u5904\u7406\u673a\u5236\uff0c\u5b83\u751f\u6210\u4e00\u4e2a\u81f4\u547d\u9519\u8bef\u65e5\u5fd7\u6587\u4ef6\uff0c\u5305\u542b\u4e86\u5173\u4e8e\u7ebf\u7a0b\u3001\u8fdb\u7a0b\u548c\u5d29\u6e83\u65f6\u7cfb\u7edf\u7684\u6709\u7528\u4fe1\u606f\u3002\u5728\u672c\u5730\u5806\u8017\u5c3d\u7684\u60c5\u51b5\u4e0b\uff0c\u65e5\u5fd7\u91cc\u7684\u5806\u5185\u5b58\u548c\u5185\u5b58\u6620\u5c04\u4fe1\u606f\u5c06\u6709\u7528\u3002<\/p>\n<p>\u5982\u679c\u8fd9\u7c7b OutOfMemoryError \u88ab\u629b\u51fa\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u7684\u6545\u969c\u6392\u9664\u5b9e\u7528\u7a0b\u5e8f\u6765\u8bca\u65ad\u8bae\u9898issue\u3002<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u53ef\u80fd\u8ddf\u5e94\u7528\u7a0b\u5e8f\u65e0\u5173\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u914d\u7f6e\u4e86\u4e0d\u5145\u8db3\u7684\u4ea4\u6362\u7a7a\u95f4\u3002<\/li>\n<li>\u7cfb\u7edf\u4e0a\u7684\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u6d88\u8017\u4e86\u6240\u6709\u5185\u5b58\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<h3>3.1.5  <code>java.lang.OutOfMemoryError: &lt;reason&gt; &lt;stack trace&gt; (Native method)<\/code> \u8be6\u7ec6\u4fe1\u606f<\/h3>\n<p>\u5982\u679c\u5728\u9519\u8bef\u4fe1\u606f\u7684\u8be6\u7ec6\u90e8\u5206\u662f <code>&lt;reason&gt; &lt;stack trace&gt; (Native method)<\/code> \uff0c\u4e14\u6808\u8f68\u8ff9\u5c06\u88ab\u6253\u5370\uff0c\u6700\u9876\u90e8\u7684\u5e27\u662f\u672c\u5730\u65b9\u6cd5\uff0c\u90a3\u4e48\u8fd9\u6307\u793a\u4e86\u672c\u5730\u65b9\u6cd5\u906d\u9047\u4e86\u5206\u914d\u5931\u8d25\u3002\u8fd9\u4e2a\u4e0e\u524d\u4e00\u4e2a\u6d88\u606f\u7684\u533a\u522b\u662f\u5206\u914d\u5931\u8d25\u662f\u5728JNI\u6216\u672c\u5730\u65b9\u6cd5\u800c\u4e0d\u662f\u5728Java VM \u4ee3\u7801\u91cc\u68c0\u6d4b\u5230\u3002<\/p>\n<h2>3.2  \u5d29\u6e83\u800c\u4e0d\u662f OutOfMemoryError<\/h2>\n<p>\u6709\u65f6\u5019\u5e94\u7528\u7a0b\u5e8f\u5728\u672c\u5730\u5806\u5206\u914d\u5931\u8d25\u540e\u9a6c\u4e0a\u5c31\u5d29\u6e83\u4e86\u3002\u8fd9\u5728\u672c\u5730\u4ee3\u7801\u4e0d\u68c0\u67e5\u5185\u5b58\u5206\u914d\u51fd\u6570\u8fd4\u56de\u7684\u9519\u8bef\u65f6\u51fa\u73b0\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6ca1\u6709\u53ef\u7528\u5185\u5b58\u65f6 <code>malloc<\/code> \u7cfb\u7edf\u8c03\u7528\u8fd4\u56de NULL\u3002\u5982\u679c <code>malloc<\/code> \u7684\u8fd4\u56de\u6ca1\u6709\u88ab\u68c0\u67e5\uff0c\u5f53\u5c1d\u8bd5\u8bbf\u95ee\u4e00\u4e2a\u975e\u6cd5\u5185\u5b58\u5730\u5740\u65f6\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u5d29\u6e83\u3002\u4f9d\u8d56\u4e8e\u73af\u5883\uff0c\u8fd9\u79cd\u7c7b\u578b\u7684issue\u53ef\u80fd\u5f88\u96be\u5b9a\u4f4d\u3002<\/p>\n<p>\u7136\u800c\uff0c\u6765\u81ea\u81f4\u547d\u9519\u8bef\u65e5\u5fd7\u6216\u5d29\u6e83\u8f6c\u50a8\u7684\u4fe1\u606f\u8db3\u4ee5\u8bca\u65ad\u8fd9\u4e2aissue\u3002\u81f4\u547d\u9519\u8bef\u65e5\u5fd7\u5728 \u9644\u5f55C \u91cc\u3002\u5982\u679c\u5d29\u6e83\u7684\u539f\u56e0\u88ab\u786e\u5b9a\u4e3a\u6ca1\u6709\u68c0\u67e5\u5206\u914d\u5931\u8d25\uff0c\u90a3\u4e48\u5206\u914d\u5931\u8d25\u7684\u7406\u7531\u5fc5\u987b\u88ab\u9a8c\u8bc1\u3002\u4e0e\u5176\u4ed6\u672c\u5730\u5806issue\u4e00\u6837\uff0c\u7cfb\u7edf\u53ef\u80fd\u6ca1\u6709\u914d\u7f6e\u8db3\u591f\u7684\u4ea4\u6362\u7a7a\u95f4\uff0c\u7cfb\u7edf\u91cc\u7684\u5176\u5b83\u8fdb\u7a0b\u6d88\u8017\u4e86\u6240\u6709\u5185\u5b58\u8d44\u6e90\uff0c\u6216\u5e94\u7528\u7a0b\u5e8f\u91cc\u6709\u6cc4\u9732\uff0c\u5bfc\u81f4\u7cfb\u7edf\u6ca1\u6709\u5185\u5b58\u3002<\/p>\n<h2>3.3  Java \u8bed\u8a00\u4ee3\u7801\u91cc\u7684\u6cc4\u9732\u8bca\u65ad\u3002<\/h2>\n<p>\u8bca\u65adJava\u8bed\u8a00\u4ee3\u7801\u91cc\u7684\u6cc4\u9732\u662f\u4e2a\u56f0\u96be\u7684\u4efb\u52a1\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5b83\u8981\u6c42\u5bf9\u5e94\u7528\u7a0b\u5e8f\u975e\u5e38\u8be6\u7ec6\u7684\u77e5\u8bc6\u3002\u53e6\u5916\u8fc7\u7a0b\u901a\u5e38\u662f\u53cd\u590d\u548c\u5197\u957f\u7684\u3002\u8fd9\u8282\u63d0\u4f9b\u4e86\u4e0b\u9762\u7684\u5b50\u7ae0\u8282\uff1a<\/p>\n<ul>\n<li>3.3.1 NetBeans Profiler<\/li>\n<li>3.3.2 \u4f7f\u7528 jhat \u5b9e\u7528\u7a0b\u5e8f<\/li>\n<li>3.3.3 \u521b\u5efa\u5806\u8f6c\u50a8<\/li>\n<li>3.3.4 \u83b7\u53d6\u6b63\u5728\u8fd0\u884c\u8fdb\u7a0b\u7684\u5806 histogram<\/li>\n<li>3.3.5 \u5728 OutOfMemoryError \u65f6\u83b7\u53d6\u5806\u7684histogram<\/li>\n<li>3.3.6 \u76d1\u89c6\u7b49\u5f85 finalization \u5bf9\u8c61\u7684\u6570\u91cf<\/li>\n<li>3.3.7 \u7b2c\u4e09\u65b9\u5185\u5b58\u8c03\u8bd5\u5668<\/li>\n<\/ul>\n<h3>3.3.1 NetBeans Profiler<\/h3>\n<p>NetBeans Profiler \u662f\u4e2a\u975e\u5e38\u51fa\u8272\u7684\u5256\u6790\u5668\uff0c\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u5185\u5b58\u6cc4\u9732\u3002\u591a\u6570\u5546\u4e1a\u5185\u5b58\u6cc4\u9732\u8c03\u8bd5\u5de5\u5177\u9700\u8981\u5f88\u957f\u65f6\u95f4\u6765\u5b9a\u4f4d\u5927\u5e94\u7528\u7a0b\u5e8f\u91cc\u7684\u6cc4\u9732\u3002NetBeans Profiler \u4f7f\u7528\u5185\u5b58\u5206\u914d\u6a21\u5f0f\u548c\u56de\u6536\u8fd9\u4e9b\u5bf9\u8c61\u7684\u5178\u578b\u901a\u5e38\u8bc1\u660e\u3002\u8fd9\u4e2a\u5904\u7406\u6db2\u5305\u62ec\u7f3a\u4e4f\u5185\u5b58\u56de\u6536\u3002\u5256\u6790\u5668\u80fd\u591f\u68c0\u67e5\u8fd9\u4e9b\u5bf9\u8c61\u5728\u54ea\u91cc\u5206\u914d\uff0c\u5728\u5927\u591a\u60c5\u51b5\u4e0b\u8fd9\u8db3\u4ee5\u8bc6\u522b\u5bfc\u81f4\u6cc4\u9732\u7684\u6839\u6e90\u3002<\/p>\n<p>\u66f4\u591a\u4fe1\u606f\u89c1 <a href=\"http:\/\/profiler.netbeans.org\">http:\/\/profiler.netbeans.org<\/a>\u3002<\/p>\n<h3>3.3.2 \u4f7f\u7528 jhat \u5b9e\u7528\u7a0b\u5e8f<\/h3>\n<p>jhat \u5de5\u5177\u961f\u8c03\u8bd5\u65e0\u610f\u4fdd\u7559\u7684\u5bf9\u8c61\uff08\u6216\u5185\u5b58\u6cc4\u9732\uff09\u6709\u7528\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u6cd5\u6765\u6d4f\u89c8\u5bf9\u8c61\u8f6c\u50a8\uff0c\u67e5\u770b\u5806\u91cc\u7684\u6240\u6709\u53ef\u8fbe\u5bf9\u8c61\uff0c\u77e5\u9053\u90a3\u4e2a\u5f15\u7528\u4fdd\u7559\u4e86\u5b58\u6d3b\u5bf9\u8c61\u3002<\/p>\n<p>\u4e3a\u4f7f\u7528 jhat \u4f60\u5fc5\u987b\u83b7\u53d6\u4e00\u4e2a\u6216\u591a\u4e2a\u6b63\u5728\u8fd0\u884c\u7a0b\u5e8f\u7684\u5806\u8f6c\u50a8\uff0c\u8fd9\u4e9b\u8f6c\u50a8\u5fc5\u987b\u662f\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684\u3002\u4e00\u65e6\u8f6c\u50a8\u6587\u4ef6\u521b\u5efa\uff0c\u5b83\u53ef\u4ee5\u4f5c\u4e3a jhat \u7684\u8f93\u5165\uff0c\u89c1 2.5 \u8282\u3002<\/p>\n<h3>3.3.3 \u521b\u5efa\u5806\u8f6c\u50a8<\/h3>\n<p>\u5806\u8f6c\u50a8\u63d0\u4f9b\u4e86\u5806\u5185\u5b58\u5206\u914d\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n<h4>3.3.3.1 HPROF \u5256\u6790\u5668<\/h4>\n<p>HPROF \u5256\u6790\u5668\u4ee3\u7406\u53ef\u4ee5\u521b\u5efa\u5728\u6267\u884c\u7a0b\u5e8f\u7684\u5806\u8f6c\u50a8\u3002\u4e0b\u9762\u662f\u547d\u4ee4\u884c\u793a\u4f8b\uff1a<br \/>\n<code>java -agentlib:hprof=file=snapshot.hprof,format=b application<\/code> \u3002<\/p>\n<p>\u5982\u679cVM\u662f\u5d4c\u5165\u5f0f\u7684\u6216\u4e0d\u662f\u7528\u547d\u4ee4\u884c\u542f\u52a8\u5668\u542f\u52a8\u7684\uff0c\u90a3\u4e48\u53ef\u4ee5\u7528 <code>JAVA_TOOLS_OPTIONS<\/code> \u73af\u5883\u53d8\u91cf\u6765\u81ea\u52a8\u628a <code>-agentlib<\/code> \u9009\u9879\u52a0\u5165\u547d\u4ee4\u884c\uff0c\u89c1 A.2 \u3002<\/p>\n<p>\u4e00\u65e6\u7a0b\u5e8f\u4e0eHPROF\u4e00\u8d77\u8fd0\u884c\uff0c\u5806\u8f6c\u50a8\u53ef\u4ee5\u5728\u7a0b\u5e8f\u547d\u4ee4\u884c\u7528 <code>Ctrl-\\<\/code> \u6216 <code>Ctrl-Break<\/code> \u521b\u5efa\u3002\u5728 Solaris OS \u548c Linux\u4e0a\u4e00\u4e2a\u53ef\u9009\u7684\u65b9\u6cd5\u662f\u53d1\u9001 <code>QUIT<\/code> \u4fe1\u53f7\uff0c\u7528 <code>kill -QUIT pid<\/code> \u547d\u4ee4\u3002\u5f53\u4fe1\u53f7\u88ab\u63a5\u53d7\u540e\uff0c\u5806\u8f6c\u50a8\u5c06\u88ab\u521b\u5efa\uff1b\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u91cc\uff0c\u6587\u4ef6 <code>snapshot.hprof<\/code> \u5c06\u88ab\u521b\u5efa\u3002<\/p>\n<p>\u5806\u8f6c\u50a8\u6587\u4ef6\u4fdd\u62a4\u6240\u6709\u539f\u59cb\u6570\u636e\u548c\u6808\u8f68\u8ff9\u3002<\/p>\n<p>\u4e00\u4e2a\u8f6c\u50a8\u6587\u4ef6\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u5806\u8f6c\u50a8\u3002\u5982\u679c <code>Ctrl-\\<\/code> \u6216 <code>Ctrl-Break<\/code> \u88ab\u6309\u4e86\u591a\u6b21\uff0c\u540e\u7eed\u7684\u8f6c\u50a8\u5c06\u88ab\u8ffd\u52a0\u5230\u6587\u4ef6\u3002jhat \u5de5\u5177\u7528 <code># n<\/code> \u8bed\u6cd5\u6765\u533a\u522b\u8f6c\u50a8\uff0c<code>n<\/code> \u662f\u8f6c\u50a8\u53f7\u3002<\/p>\n<h4>3.3.3.2  jmap \u5de5\u5177<\/h4>\n<p>\u4e5f\u53ef\u4ee5\u7528 jmap \u5de5\u5177\u6765\u83b7\u53d6\u5806\u8f6c\u50a8\uff1a <code>jmap -dump:format=b,file=snapshot.jmap process-pid<\/code> \u3002<\/p>\n<p>\u4e0d\u7ba1JVM\u5982\u4f55\u542f\u52a8\uff0cjmap \u5de5\u5177\u53ef\u4ee5\u751f\u6210\u5806\u8f6c\u50a8\u5feb\u7167\uff0c\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u91cc\uff0c\u6587\u4ef6\u88ab\u53eb\u4f5c <code>snapshot.jmap<\/code>\u3002jmap \u8f93\u51fa\u6587\u4ef6\u5e94\u8be5\u5305\u542b\u6240\u6709\u539f\u59cb\u6570\u636e\uff0c\u4f46\u4e0d\u5305\u62ec\u4efb\u4f55\u663e\u793a\u5bf9\u8c61\u5728\u54ea\u91cc\u521b\u5efa\u7684\u6808\u8f68\u8ff9\u3002<\/p>\n<h4>3.3.3.3  JConsole \u5de5\u5177<\/h4>\n<p>\u83b7\u53d6\u5806\u8f6c\u50a8\u7684\u53e6\u4e00\u4e2a\u65b9\u6cd5\u662f\u7528JConsole\u5de5\u5177\uff0c\u9009\u62e9 <code>HotSpotDiagnostic<\/code> MBean\uff0c\u663e\u793a  Operations\uff0c\u9009\u62e9 dumpHeap \u9009\u9879\u3002<\/p>\n<h4>3.3.3.4  <code>-XX:+HeapDumpOnOutOfMemoryError<\/code> \u547d\u4ee4\u884c\u9009\u9879<\/h4>\n<p>\u5982\u679c\u6307\u5b9a\u4e86 <code>-XX:+HeapDumpOnOutOfMemoryError<\/code> \u547d\u4ee4\u884c\u9009\u9879\uff0c\u4e14\u5982\u679c\u629b\u51fa\u4e86 <code>OutOfMemoryError<\/code>\uff0cVM\u5c06\u751f\u6210\u5806\u8f6c\u50a8\u3002<\/p>\n<h3>3.3.4  \u5728\u8fd0\u884c\u8fdb\u7a0b\u4e0a\u83b7\u53d6\u5806 histogram<\/h3>\n<p>\u4f60\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u5806histogram\u6765\u5c1d\u8bd5\u5feb\u901f\u7f29\u5c0f\u5185\u5b58\u6cc4\u9732\u8303\u56f4\u3002\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u83b7\u53d6\u8fd9\u4e2a\u4fe1\u606f\uff1a<\/p>\n<ul>\n<li>\u7528\u547d\u4ee4 <code>jmap -histo pid<\/code> \u6765\u83b7\u53d6\u3002\u8f93\u51fa\u663e\u793a\u4e86\u603b\u7684\u5927\u5c0f\u548c\u5806\u91cc\u6bcf\u79cd\u7c7b\u578b\u7684\u5b9e\u4f8b\u6570\u91cf\u3002\u5982\u679c\u4e00\u5e8f\u5217histogram\u88ab\u83b7\u53d6\uff08\u4f8b\u5982\u6bcf\u96942\u5206\u949f\uff09\uff0c\u4f60\u5c06\u53ef\u4ee5\u89c2\u5bdf\u5230\u4e00\u4e2a\u8d8b\u52bf\uff0c\u5f15\u5411\u8fdb\u4e00\u6b65\u5206\u6790\u3002<\/li>\n<li>\u5728Solaris OS\u548cLinux\u4e0a\uff0cjmap\u5de5\u5177\u4e5f\u53ef\u4ee5\u4ececore\u6587\u4ef6\u63d0\u4f9bhistogram\u3002<\/li>\n<li>\u5982\u679cJava\u8fdb\u7a0b\u662f\u5e26 <code>-XX:+PrintClassHistogram<\/code> \u9009\u9879\u542f\u52a8\uff0cCtrl-Break \u5904\u7406\u5668\u5c06\u751f\u6210\u5806histogram\u3002<\/li>\n<\/ul>\n<h3>3.3.5  OutOfMemoryError \u65f6\u83b7\u53d6\u5806histogram<\/h3>\n<p>\u5982\u679c\u6307\u5b9a\u4e86 <code>-XX:+HeapDumpOnOutOfMemoryError<\/code> \u9009\u9879\uff0c\u4e14\u5982\u679c\u629b\u51fa\u4e86 <code>OutOfMemoryError<\/code> \uff0cVM\u5c06\u751f\u6210\u5806\u8f6c\u50a8\u3002\u4f60\u53ef\u4ee5\u7528 jmap \u5de5\u5177\u4ece\u5806\u8f6c\u50a8\u83b7\u53d6histogram\u3002<\/p>\n<p>\u5982\u679c\u629b\u51fa OutOfMemoryError \u65f6\u751f\u6210\u4e86core\u6587\u4ef6\uff0c\u4f60\u53ef\u4ee5\u5728core\u6587\u4ef6\u4e0a\u6267\u884c jmap \u6765\u83b7\u5f97 histogram\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre><code>$jmap -histo \\ \/java\/re\/javase\/6\/latest\/binaries\/solaris-sparc\/bin\/java core.27421\n\nAttaching to core core.27421 from executable \n\/java\/re\/javase\/6\/latest\/binaries\/solaris-sparc\/bin\/java, please wait...\nDebugger attached successfully.\nServer compiler detected.\nJVM version is 1.6.0-beta-b63\nIterating over heap. This may take a while...\nHeap traversal took 8.902 seconds.\n\nObject Histogram:\n\nSize      Count   Class description\n-------------------------------------------------------\n86683872  3611828 java.lang.String\n20979136  204     java.lang.Object[]\n403728    4225    * ConstMethodKlass\n306608    4225    * MethodKlass\n220032    6094    * SymbolKlass\n152960    294     * ConstantPoolKlass\n108512    277     * ConstantPoolCacheKlass\n104928    294     * InstanceKlassKlass\n68024     362     byte[]\n65600     559     char[]\n31592     359     java.lang.Class\n27176     462     java.lang.Object[]\n25384     423     short[]\n17192     307     int[]\n:\n\n<\/code><\/pre>\n<p>\u793a\u4f8b\u8868\u660eOutOfMemoryError \u662f\u7531 java.lang.String \u5bf9\u8c61\u7684\u6570\u91cf\uff08\u5806\u91cc\u67093611828\u4e2a\u5b9e\u4f8b\uff09\u5bfc\u81f4\u7684\u3002\u6ca1\u6709\u8fdb\u4e00\u6b65\u5206\u6790\u662f\u4e0d\u77e5\u9053\u5b57\u7b26\u4e32\u662f\u5728\u54ea\u5206\u914d\u7684\u3002\u7136\u800c\u4fe1\u606f\u4ecd\u7136\u662f\u6709\u7528\u7684\uff0c\u7ee7\u7eed\u8c03\u67e5\u53ef\u4ee5\u7528 HPROF \u6216 jhat \u6765\u627e\u51fa\u5b57\u7b26\u4e32\u662f\u5728\u54ea\u5206\u914d\u7684\uff0c\u548c\u54ea\u4e9b\u5f15\u7528\u8ba9\u5b83\u4eec\u4fdd\u6301\u5b58\u6d3b\uff0c\u963b\u6b62\u5b83\u4eec\u88ab\u5783\u573e\u56de\u6536\u3002<\/p>\n<h3>3.3.6  \u76d1\u89c6\u7b49\u5f85 finalization \u7684\u5bf9\u8c61\u6570\u91cf<\/h3>\n<p>\u59823.1.1\u8282\u63d0\u5230\uff0c\u8fc7\u5ea6\u4f7f\u7528 finalizer\u53ef\u4ee5\u5bfc\u81f4 OutOfMemoryError \u3002\u4f60\u6709\u591a\u79cd\u9009\u62e9\u6765\u76d1\u89c6\u7b49\u5f85finalization \u7684\u5bf9\u8c61\u6570\u91cf\uff1a<\/p>\n<ul>\n<li>JConsole \u7ba1\u7406\u5de5\u5177\u53ef\u7528\u4e8e\u76d1\u89c6\u7b49\u5f85finalization\u7684\u5bf9\u8c61\u6570\u91cf\u3002\u8fd9\u4e2a\u5de5\u5177\u62a5\u544a\u7b49\u5f85finalization\u7684\u8ba1\u6570\uff0c\u5728\u5185\u5b58\u7edf\u8ba1\u4fe1\u606f\u7684 &#8220;Summary&#8221; \u6807\u7b7e\u9762\u677f\u3002\u8fd9\u4e2a\u8ba1\u6570\u662f\u4f30\u7b97\u7684\uff0c\u4f46\u5b83\u53ef\u7528\u4e8e\u63cf\u7ed8\u5e94\u7528\u7279\u5f81\uff0c\u660e\u767d\u5b83\u4f9d\u8d56\u4e8e\u5927\u91cffinalization\u3002<\/li>\n<li>\u5728Solaris OS\u548cLinux\u4e0a\uff0c<code>jmap -finalization<\/code> \u9009\u9879\u6253\u5370\u7b49\u5f85finalization\u7684\u5bf9\u8c61\u4fe1\u606f\u3002<\/li>\n<li>\u5e94\u7528\u53ef\u4ee5\u7528 <code>java.lang.management.MemoryMXBean<\/code> \u7c7b\u7684 <code>getObjectPendingFinalizationCount<\/code> \u65b9\u6cd5\u6765\u62a5\u544a\u5927\u7ea6\u7684\u7b49\u5f85finalization\u5bf9\u8c61\u7684\u6570\u91cf\u3002<\/li>\n<\/ul>\n<h3>3.3.7  \u7b2c\u4e09\u65b9\u5185\u5b58\u8c03\u8bd5\u5668<\/h3>\n<p>\u9664\u4e86\u524d\u9762\u7ae0\u8282\u63d0\u5230\u7684\u5de5\u5177\uff0c\u8fd8\u6709\u5f88\u591a\u7b2c\u4e09\u65b9\u7684\u5185\u5b58\u8c03\u8bd5\u5668\u53ef\u7528\u3002JProbe from Quest Software, and OptimizeIt from Borland are two examples of commercial tools with memory debugging capability. There are many others and no specific product is recommended\u3002<\/p>\n<h2>3.4  \u8bca\u65ad\u672c\u5730\u4ee3\u7801\u91cc\u7684\u6cc4\u9732<\/h2>\n<p>\u6709\u4e9b\u6280\u672f\u53ef\u7528\u4e8e\u627e\u51fa\u548c\u9694\u79bb\u672c\u5730\u4ee3\u7801\u5185\u5b58\u6cc4\u9732\u3002\u4e00\u822c\u6ca1\u6709\u5355\u4e00\u7406\u60f3\u7684\u89e3\u51b3\u65b9\u6848\u9002\u7528\u4e8e\u6240\u6709\u5e73\u53f0\u3002<\/p>\n<h3>3.4.1 \u8ddf\u8e2a\u6240\u6709\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u8c03\u7528<\/h3>\n<p>\u4e00\u4e2a\u6700\u5e38\u89c1\u7684\u5b9e\u8df5\u662f\u8ddf\u8e2a\u6240\u6709\u7684\u672c\u5730\u5206\u914d\u548c\u91ca\u653e\u3002\u8fd9\u53ef\u80fd\u662f\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u8fc7\u7a0b\u4e5f\u53ef\u4ee5\u662f\u975e\u5e38\u590d\u6742\u7684\u3002<\/p>\n<h3>3.4.2  \u8ddf\u8e2aJNI\u5e93\u91cc\u7684\u5185\u5b58\u5206\u914d<\/h3>\n<p>TODO<\/p>\n<h3>3.4.3  \u7528OS\u652f\u6301\u8ddf\u8e2a\u5185\u5b58\u5206\u914d<\/h3>\n<p>TODO<\/p>\n<h3>3.4.4  \u7528 dbx \u67e5\u627e\u6cc4\u9732<\/h3>\n<p>TODO<\/p>\n<h3>3.4.5  \u7528 libumem \u67e5\u627e\u6cc4\u9732<\/h3>\n<p>TODO<\/p>\n<hr\/>\n<p>\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u5fae\u4fe1\u516c\u4f17\u53f7: <strong>coderbee\u7b14\u8bb0<\/strong>\uff0c\u53ef\u4ee5\u66f4\u53ca\u65f6\u56de\u590d\u4f60\u7684\u8ba8\u8bba\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"258\" src=\"https:\/\/coderbee.net\/wp-content\/uploads\/2019\/01\/coderbee-note.jpg\" class=\"alignnone size-full wp-image-1707\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5185\u5b58\u6cc4\u9732\u6545\u969c\u6392\u9664 \u5982\u679c\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u6267\u884c\u7684\u65f6\u95f4\u8d8a\u6765\u8d8a\u957f\uff0c\u6216\u5982\u679c\u64cd\u4f5c\u7cfb\u7edf\u6267\u884c\u8d8a\u6765\u8d8a\u6162 &hellip; <a href=\"https:\/\/coderbee.net\/index.php\/jvm\/20140515\/919\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[231,233,166],"_links":{"self":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/919"}],"collection":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/comments?post=919"}],"version-history":[{"count":2,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/919\/revisions"}],"predecessor-version":[{"id":924,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/919\/revisions\/924"}],"wp:attachment":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/media?parent=919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/categories?post=919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/tags?post=919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}