{"id":727,"date":"2022-10-12T10:25:50","date_gmt":"2022-10-12T02:25:50","guid":{"rendered":"http:\/\/22pig.com\/?p=727"},"modified":"2022-10-12T10:52:57","modified_gmt":"2022-10-12T02:52:57","slug":"java%e5%85%a5%e9%97%a8%e5%b7%a5%e5%85%b7","status":"publish","type":"post","link":"http:\/\/22pig.com\/?p=727","title":{"rendered":"java\u5165\u95e8\u5de5\u5177"},"content":{"rendered":"<h2>\u4e00\u3001\u7f16\u7801\u5de5\u5177<\/h2>\n<p>1.IDE\uff1aEclipse\u6216\u8005IDEA\uff0c\u719f\u6089\u5c3d\u53ef\u80fd\u591a\u7684\u5feb\u6377\u952e\uff0c\u300aEclipse\u5e38\u89c1\u5feb\u6377\u952e\u5217\u8868\u300b<br \/>\n2.\u63d2\u4ef6\uff1a<br \/>\n(1)\u00a0Findbugs\uff0c\u5728release\u4e4b\u524d\u8fdb\u884c\u4e00\u6b21\u9759\u6001\u4ee3\u7801\u68c0\u67e5\u662f\u5fc5\u987b\u7684<br \/>\n(2)\u00a0Clover\uff0c\u5173\u5fc3\u4f60\u7684\u5355\u5143\u6d4b\u8bd5\u8986\u76d6\u7387<br \/>\n(3)\u00a0Checkstyle\u00a0\u4ee3\u7801\u98ce\u683c\u68c0\u67e5<br \/>\n3.\u6784\u5efa\u548c\u90e8\u7f72\u5de5\u5177:ant\u6216\u8005maven\uff0c\u73b0\u5728\u4e3b\u6d41\u90fd\u662fmaven\u4e86\u5427\uff0c\u4f7f\u7528nexus\u642d\u5efamaven\u79c1\u670d\uff0c\u518d\u52a0\u4e0a\u6301\u7eed\u96c6\u6210jenkins\u3002\u4ee3\u7801\u8d28\u91cf\u4e0d\u7528\u6101\u3002<br \/>\n4.\u7248\u672c\u7ba1\u7406\u5de5\u5177\uff1a\u00a0svn\u6216\u8005git<br \/>\n5.diff\u548cpatch<br \/>\n6.\u8bbe\u7f6e\u4f60\u7684eclipse\u6216\u8005IDEA\uff0c\u5982formatter,save actions\u4ee5\u53cacode template\u7b49\u3002\u4ee3\u7801\u98ce\u683c\uff0c\u76f4\u63a5\u7528google\u7684\u4e5f\u53ef\u4ee5\u554a\u3002\u300aGoogle style guide\u300b<br \/>\n7.\u638c\u63e1\u4e00\u4e2a\u6587\u672c\u7f16\u8f91\u5668\uff0cEmacs\u6216\u8005VIM\uff0c\u719f\u6089\u5e38\u7528\u5feb\u6377\u952e\u3002\u8fd9\u5728\u4f60\u9700\u8981\u5728\u7ebf\u7f16\u8f91\u4ee3\u7801\uff0c\u6216\u8005\u7f16\u5199\u5176\u4ed6\u8bed\u8a00\u4ee3\u7801\u65f6\u5019\u7279\u522b\u6709\u7528\u3002\u300a\u795e\u5668\u5723\u6218\u300b<\/p>\n<h2>\u4e8c\u3001JDK\u76f8\u5173<\/h2>\n<p>1.jstat : \u89c2\u5bdfGC\u60c5\u51b5\uff0c\u5982\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>jstat -gcutil pid 2000<\/pre>\n<\/div>\n<p>2.jmap\uff0c\u67e5\u770bheap\u60c5\u51b5\uff0c\u5982\u67e5\u770b\u5b58\u6d3b\u5bf9\u8c61\u5217\u8868\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>jmap -histo:live pid |grep com.company |less<\/pre>\n<\/div>\n<p>\u6216\u8005dump\u5185\u5b58\u7528\u6765\u5206\u6790\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>jmap -dump:file=test.bin pid<\/pre>\n<\/div>\n<p>3.\u5206\u6790dump\u7684\u5806\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528jhat:<\/p>\n<div class=\"cnblogs_code\">\n<pre>jhat test.bin<\/pre>\n<\/div>\n<p>\u5206\u6790\u5b8c\u6210\u540e\u53ef\u4ee5\u7528\u6d4f\u89c8\u5668\u67e5\u770b\u5806\u7684\u60c5\u51b5\u3002\u8fd9\u4e2a\u5de5\u5177\u7684\u5206\u6790\u7ed3\u679c\u8fd8\u6bd4\u8f83\u539f\u59cb\uff0c\u4f60\u8fd8\u53ef\u4ee5\u7528Eclipse MAT\u63d2\u4ef6\u8fdb\u884c\u56fe\u5f62\u5316\u5206\u6790\uff0c\u6216\u8005IBM\u7684Heap Analyzer.<br \/>\n4.jvisualvm\u548cjconsole\uff1a JVM\u81ea\u5e26\u7684\u6027\u80fd\u5206\u6790\u548c\u76d1\u63a7\u5de5\u5177\uff0c\u600e\u4e48\u7528\uff1f\u8bf7\u81ea\u5df1\u770b\u6587\u6863\u3002<br \/>\n5.jstack\uff1a\u5206\u6790\u7ebf\u7a0b\u5806\u6808\uff0c\u5982<\/p>\n<div class=\"cnblogs_code\">\n<pre>jstack pid &gt; thread_dump<\/pre>\n<\/div>\n<p>\u67e5\u770bCPU\u6700\u9ad8\u7684\u7ebf\u7a0b\u5728\u5e72\u4ec0\u4e48\u7684\u65b9\u6cd5\u7ed3\u5408top\u548cjstack\uff1ahttp:\/\/www.iteye.com\/topic\/1114219<br \/>\n6.\u66f4\u591aJVM\u5de5\u5177\uff0c\u53c2\u89c1\u5b98\u65b9\u6587\u6863\uff1ahttp:\/\/docs.oracle.com\/javase\/6\/docs\/technotes\/tools\/<br \/>\n7.\u5b66\u4e60\u4f7f\u7528btrace\u5206\u6790java\u8fd0\u884c\u65f6\u95ee\u9898\u3002\u300aBtrace\u4f7f\u7528\u7b80\u4ecb\u300b<br \/>\n8.GC\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff1aGC viewer\u3001GC-console\u6216\u8005\u81ea\u5df1\u6311\u5427\u3002<br \/>\n9.\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u9664\u4e86\u81ea\u5e26\u7684jvisualvm\u5916\uff0c\u8fd8\u53ef\u4ee5\u7528\u5546\u4e1a\u7684jprofiler\u3002<br \/>\n10.JVM\u53c2\u6570\u5927\u5168<br \/>\n11.\u300aJVM\u8c03\u4f18\u6807\u51c6\u53c2\u6570\u9677\u9631\u300b\uff0citeye\u795e\u8d34\u3002<br \/>\n\u4e09\u3001Linux\u5de5\u5177<br \/>\n1.\u719f\u6089\u5e38\u7528\u7684shell\u547d\u4ee4\uff0c<\/p>\n<p>2.\u8bbe\u7f6essh\u514d\u767b\u9646<\/p>\n<p>3.\u4f7f\u7528htop\u66ff\u6362top\u3002<br \/>\n4.\u719f\u6089\u4e0bstrace,gdb\u751a\u81f3systemtap\u6765\u5206\u6790\u95ee\u9898\u3002<br \/>\n5.\u719f\u6089vmstat,iostat,sar\u7b49\u6027\u80fd\u7edf\u8ba1\u5de5\u5177\u3002<br \/>\n5.\u81ea\u52a8\u5316\u90e8\u7f72\u811a\u672c\uff0cpy-fabric\u6216\u8005\u81ea\u8350\u4e0b\u6211\u7684clojure-control\u3002<br \/>\n\u56db\u3001\u5176\u4ed6<br \/>\n1.\u638c\u63e1\u4e00\u95e8\u811a\u672c\u8bed\u8a00\uff0cPython\u6216\u8005Ruby\uff0c\u9ad8\u6548\u89e3\u51b3\u4e00\u4e9b\u9700\u8981quick and dirty\u7684\u4efb\u52a1\uff1a\u6bd4\u5982\u8bfb\u5199\u6587\u4ef6\u3001\u5bfc\u5165\u5bfc\u51fa\u6570\u636e\u5e93\u3001\u7f51\u9875\u722c\u866b\u7b49\u3002\u6ce8\u610f\u4e0d\u662fpython.com\uff0c\u5494\u5494\u3002<br \/>\n2.\u4f7f\u7528Linux\u6216\u8005Mac os\u7cfb\u7edf\u4f5c\u4e3a\u4f60\u7684\u5f00\u53d1\u73af\u5883\u3002<br \/>\n3.\u5347\u7ea7\u4f60\u7684\u201c\u786c\u4ef6\u5de5\u5177\u201d\uff0c\u53cc\u5c4f\u5927\u5c4f\u663e\u793a\u5668\u3001SSD\u30018G\u5185\u5b58\u751a\u81f3\u66f4\u591a\u3002<br \/>\n4.\u4f60\u61c2\u7684\uff1ahttps:\/\/code.google.com\/p\/goagent\/<br \/>\n\u4e94\u3001\u5982\u4f55\u67e5\u627e\u5de5\u5177\uff1f<br \/>\n1.\u641c\u7d22\u5f15\u64ce\uff0cgoogle\u6216\u8005baidu\uff0c\u300a\u641c\u7d22\u6280\u5de7\u300b<br \/>\n2.\u4e07\u80fd\u7684stack overflow\uff1ahttp:\/\/stackoverflow.com\/<\/p>\n<p>3.\u865a\u5fc3\u95ee\u725b\u4eba\u3002<br \/>\n\u516d\u3001\u6700\u91cd\u8981\u7684\u662f\u22ef\u22ef<br \/>\n\u4e00\u9897\u6c38\u4e0d\u505c\u6b62\u5b66\u4e60\u7684\u5fc3\u3002<\/p>\n<p>\u539f\u6587\u5730\u5740\uff1a http:\/\/www.pingtaimeng.com\/article\/detail\/id\/1505978<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u7f16\u7801\u5de5\u5177 1.IDE\uff1aEclipse\u6216\u8005IDEA\uff0c\u719f\u6089\u5c3d\u53ef\u80fd\u591a\u7684\u5feb\u6377\u952e\uff0c\u300aEclipse\u5e38\u89c1\u5feb\u6377\u952e\u5217\u8868\u300b 2.\u63d2\u4ef6\uff1a (1)\u00a0Findbugs\uff0c\u5728release\u4e4b\u524d\u8fdb\u884c\u4e00\u6b21\u9759\u6001\u4ee3\u7801\u68c0\u67e5\u662f\u5fc5\u987b\u7684 (2)\u00a0Clover\uff0c\u5173\u5fc3\u4f60\u7684\u5355\u5143\u6d4b\u8bd5\u8986\u76d6\u7387 (3)\u00a0Checkstyle\u00a0\u4ee3\u7801\u98ce\u683c\u68c0\u67e5 3.\u6784\u5efa\u548c\u90e8\u7f72\u5de5\u5177:ant\u6216\u8005maven\uff0c\u73b0\u5728\u4e3b\u6d41\u90fd\u662fmaven\u4e86\u5427\uff0c\u4f7f\u7528nexus\u642d\u5efamaven\u79c1\u670d\uff0c\u518d\u52a0\u4e0a\u6301\u7eed\u96c6\u6210jenkins\u3002\u4ee3\u7801\u8d28\u91cf\u4e0d\u7528\u6101\u3002 4.\u7248\u672c\u7ba1\u7406\u5de5\u5177\uff1a\u00a0svn\u6216\u8005git 5.diff\u548cpatch 6.\u8bbe\u7f6e\u4f60\u7684eclipse\u6216\u8005IDEA\uff0c\u5982formatter,save actions\u4ee5\u53cacode template\u7b49\u3002\u4ee3\u7801\u98ce\u683c\uff0c\u76f4\u63a5\u7528google\u7684\u4e5f\u53ef\u4ee5\u554a\u3002\u300aGoogle style guide\u300b 7.\u638c\u63e1\u4e00\u4e2a\u6587\u672c\u7f16\u8f91\u5668\uff0cEmacs\u6216\u8005VIM\uff0c\u719f\u6089\u5e38\u7528\u5feb\u6377\u952e\u3002\u8fd9\u5728\u4f60\u9700\u8981\u5728\u7ebf\u7f16\u8f91\u4ee3\u7801\uff0c\u6216\u8005\u7f16\u5199\u5176\u4ed6\u8bed\u8a00\u4ee3\u7801\u65f6\u5019\u7279\u522b\u6709\u7528\u3002\u300a\u795e\u5668\u5723\u6218\u300b \u4e8c\u3001JDK\u76f8\u5173 1.jstat : \u89c2\u5bdfGC\u60c5\u51b5\uff0c\u5982\uff1a jstat -gcutil pid 2000 2.jmap\uff0c\u67e5\u770bheap\u60c5\u51b5\uff0c\u5982\u67e5\u770b\u5b58\u6d3b\u5bf9\u8c61\u5217\u8868\uff1a jmap -histo:live pid |grep com.company |less \u6216\u8005dump\u5185\u5b58\u7528\u6765\u5206\u6790\uff1a jmap -dump:file=test.bin pid 3.\u5206\u6790dump\u7684\u5806\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528jhat: jhat test.bin \u5206\u6790\u5b8c\u6210\u540e\u53ef\u4ee5\u7528\u6d4f\u89c8\u5668\u67e5\u770b\u5806\u7684\u60c5\u51b5\u3002\u8fd9\u4e2a\u5de5\u5177\u7684\u5206\u6790\u7ed3\u679c\u8fd8\u6bd4\u8f83\u539f\u59cb\uff0c\u4f60\u8fd8\u53ef\u4ee5\u7528Eclipse MAT\u63d2\u4ef6\u8fdb\u884c\u56fe\u5f62\u5316\u5206\u6790\uff0c\u6216\u8005IBM\u7684Heap Analyzer. 4.jvisualvm\u548cjconsole\uff1a JVM\u81ea\u5e26\u7684\u6027\u80fd\u5206\u6790\u548c\u76d1\u63a7\u5de5\u5177\uff0c\u600e\u4e48\u7528\uff1f\u8bf7\u81ea\u5df1\u770b\u6587\u6863\u3002 5.jstack\uff1a\u5206\u6790\u7ebf\u7a0b\u5806\u6808\uff0c\u5982 jstack pid &gt; thread_dump \u67e5\u770bCPU\u6700\u9ad8\u7684\u7ebf\u7a0b\u5728\u5e72\u4ec0\u4e48\u7684\u65b9\u6cd5\u7ed3\u5408top\u548cjstack\uff1ahttp:\/\/www.iteye.com\/topic\/1114219 6.\u66f4\u591aJVM\u5de5\u5177\uff0c\u53c2\u89c1\u5b98\u65b9\u6587\u6863\uff1ahttp:\/\/docs.oracle.com\/javase\/6\/docs\/technotes\/tools\/ 7.\u5b66\u4e60\u4f7f\u7528btrace\u5206\u6790java\u8fd0\u884c\u65f6\u95ee\u9898\u3002\u300aBtrace\u4f7f\u7528\u7b80\u4ecb\u300b 8.GC\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff1aGC viewer\u3001GC-console\u6216\u8005\u81ea\u5df1\u6311\u5427\u3002 9.\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u9664\u4e86\u81ea\u5e26\u7684jvisualvm\u5916\uff0c\u8fd8\u53ef\u4ee5\u7528\u5546\u4e1a\u7684jprofiler\u3002 10.JVM\u53c2\u6570\u5927\u5168 11.\u300aJVM\u8c03\u4f18\u6807\u51c6\u53c2\u6570\u9677\u9631\u300b\uff0citeye\u795e\u8d34\u3002 &#8230; <a title=\"java\u5165\u95e8\u5de5\u5177\" class=\"read-more\" href=\"http:\/\/22pig.com\/?p=727\" aria-label=\"More on java\u5165\u95e8\u5de5\u5177\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-727","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=727"}],"version-history":[{"count":2,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/727\/revisions"}],"predecessor-version":[{"id":730,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/727\/revisions\/730"}],"wp:attachment":[{"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=727"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}