{"id":1828,"date":"2016-12-27T09:45:04","date_gmt":"2016-12-27T01:45:04","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1828"},"modified":"2016-12-27T09:45:36","modified_gmt":"2016-12-27T01:45:36","slug":"%e6%97%a5%e5%bf%97%e8%be%93%e5%87%ba%e6%a1%86%e6%9e%b6log4j%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1828","title":{"rendered":"\u65e5\u5fd7\u8f93\u51fa\u6846\u67b6Log4j\u4f7f\u7528"},"content":{"rendered":"

\u4e00\u3001Log4j\u65e5\u5fd7\u4ecb\u7ecd<\/h2>\n

Log4j\u662fApache\u7684\u4e00\u4e2a\u5f00\u6e90\u9879\u76ee\uff0c\u4f7f\u7528Log4j\u8fdb\u884c\u65e5\u5fd7\u64cd\u4f5c\uff0c\u6211\u4eec\u53ef\u4ee5\u63a7\u5236\u65e5\u5fd7\u4fe1\u606f\u8f93\u9001\u7684\u76ee\u7684\u5730\u662f\u63a7\u5236\u53f0\u3001\u6587\u4ef6\u7b49\uff1b\u6211\u4eec\u4e5f\u53ef\u4ee5\u63a7\u5236\u6bcf\u4e00\u6761\u65e5\u5fd7\u7684\u8f93\u51fa\u683c\u5f0f\uff1b\u901a\u8fc7\u5b9a\u4e49\u6bcf\u4e00\u6761\u65e5\u5fd7\u4fe1\u606f\u7684\u7ea7\u522b\uff0c\u6211\u4eec\u80fd\u591f\u66f4\u52a0\u7ec6\u81f4\u5730\u63a7\u5236\u65e5\u5fd7\u7684\u751f\u6210\u8fc7\u7a0b\u3002\u6700\u4ee4\u4eba\u611f\u5174\u8da3\u7684\u5c31\u662f\uff0c\u8fd9\u4e9b\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u6765\u7075\u6d3b\u5730\u8fdb\u884c\u914d\u7f6e\uff0c\u800c\u4e0d\u9700\u8981\u4fee\u6539\u5e94\u7528\u7684\u4ee3\u7801\u3002<\/p>\n

\u6b64\u5916\uff0c\u901a\u8fc7Log4j\u5176\u4ed6\u8bed\u8a00\u63a5\u53e3\uff0c\u60a8\u53ef\u4ee5\u5728C\u3001C++\u3001.Net\u3001PL\/SQL\u7a0b\u5e8f\u4e2d\u4f7f\u7528Log4j\uff0c\u5176\u8bed\u6cd5\u548c\u7528\u6cd5\u4e0e\u5728Java\u7a0b\u5e8f\u4e2d\u4e00\u6837\uff0c\u4f7f\u5f97\u591a\u8bed\u8a00\u5206\u5e03\u5f0f\u7cfb\u7edf\u5f97\u5230\u4e00\u4e2a\u7edf\u4e00\u4e00\u81f4\u7684\u65e5\u5fd7\u7ec4\u4ef6\u6a21\u5757\u3002\u800c\u4e14\uff0c\u901a\u8fc7\u4f7f\u7528\u5404\u79cd\u7b2c\u4e09\u65b9\u6269\u5c55\uff0c\u60a8\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u5c06Log4j\u96c6\u6210\u5230J2EE\u3001JINI\u751a\u81f3\u662fSNMP\u5e94\u7528\u4e2d\u3002<\/p>\n

\u4e8c\u3001Log4j\u4e09\u4e2a\u7ec4\u4ef6<\/h2>\n

Log4j\u6709\u4e09\u4e2a\u4e3b\u8981\u7684\u7ec4\u4ef6\uff1aLoggers(\u8bb0\u5f55\u5668)\uff0cAppenders (\u8f93\u51fa\u6e90)\u548cLayouts(\u5e03\u5c40)\u3002\u8fd9\u91cc\u53ef\u7b80\u5355\u7406\u89e3\u4e3a\u65e5\u5fd7\u7c7b\u522b\uff0c\u65e5\u5fd7\u8981\u8f93\u51fa\u7684\u5730\u65b9\u548c\u65e5\u5fd7\u4ee5\u4f55\u79cd\u5f62\u5f0f\u8f93\u51fa\u3002\u7efc\u5408\u4f7f\u7528\u8fd9\u4e09\u4e2a\u7ec4\u4ef6\u53ef\u4ee5\u8f7b\u677e\u5730\u8bb0\u5f55\u4fe1\u606f\u7684\u7c7b\u578b\u548c\u7ea7\u522b\uff0c\u5e76\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u63a7\u5236\u65e5\u5fd7\u8f93\u51fa\u7684\u6837\u5f0f\u548c\u4f4d\u7f6e\u3002\u00a0<\/p>\n

1\u3001Loggers <\/h3>\n

Loggers\u7ec4\u4ef6\u5728\u6b64\u7cfb\u7edf\u4e2d\u88ab\u5206\u4e3a\u4e94\u4e2a\u7ea7\u522b\uff1aDEBUG\u3001INFO\u3001WARN\u3001ERROR\u548cFATAL\u3002\u8fd9\u4e94\u4e2a\u7ea7\u522b\u662f\u6709\u987a\u5e8f\u7684\uff0cDEBUG < INFO < WARN < ERROR 2\u3001Appenders <\/h3>\n

Log4j\u65e5\u5fd7\u7cfb\u7edf\u5141\u8bb8\u628a\u65e5\u5fd7\u8f93\u51fa\u5230\u4e0d\u540c\u7684\u5730\u65b9\uff0c\u5982\u63a7\u5236\u53f0\uff08Console\uff09\u3001\u6587\u4ef6\uff08Files\uff09\u7b49\uff0c\u53ef\u4ee5\u6839\u636e\u5929\u6570\u6216\u8005\u6587\u4ef6\u5927\u5c0f\u4ea7\u751f\u65b0\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u4ee5\u6d41\u7684\u5f62\u5f0f\u53d1\u9001\u5230\u5176\u5b83\u5730\u65b9\u7b49\u7b49\u3002\u00a0<\/p>\n

\u5e38\u4f7f\u7528\u7684\u7c7b\u5982\u4e0b\uff1a\u00a0
\n[java]org.apache.log4j.ConsoleAppender\uff08\u63a7\u5236\u53f0\uff09\u00a0
\norg.apache.log4j.FileAppender\uff08\u6587\u4ef6\uff09\u00a0
\norg.apache.log4j.DailyRollingFileAppender\uff08\u6bcf\u5929\u4ea7\u751f\u4e00\u4e2a\u65e5\u5fd7\u6587\u4ef6\uff09\u00a0
\norg.apache.log4j.RollingFileAppender\uff08\u6587\u4ef6\u5927\u5c0f\u5230\u8fbe\u6307\u5b9a\u5c3a\u5bf8\u7684\u65f6\u5019\u4ea7\u751f\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\uff09\u00a0
\norg.apache.log4j.WriterAppender\uff08\u5c06\u65e5\u5fd7\u4fe1\u606f\u4ee5\u6d41\u683c\u5f0f\u53d1\u9001\u5230\u4efb\u610f\u6307\u5b9a\u7684\u5730\u65b9\uff09\u00a0[\/java]<\/p>\n

\u914d\u7f6e\u6a21\u5f0f\uff1a\u00a0
\n[java]log4j.appender.appenderName = className [\/java]<\/p>\n

3\u3001Layouts <\/h3>\n

\u6709\u65f6\u7528\u6237\u5e0c\u671b\u6839\u636e\u81ea\u5df1\u7684\u559c\u597d\u683c\u5f0f\u5316\u81ea\u5df1\u7684\u65e5\u5fd7\u8f93\u51fa\uff0cLog4j\u53ef\u4ee5\u5728Appenders\u7684\u540e\u9762\u9644\u52a0Layouts\u6765\u5b8c\u6210\u8fd9\u4e2a\u529f\u80fd\u3002Layouts\u63d0\u4f9b\u56db\u79cd\u65e5\u5fd7\u8f93\u51fa\u6837\u5f0f\uff0c\u5982\u6839\u636eHTML\u6837\u5f0f\u3001\u81ea\u7531\u6307\u5b9a\u6837\u5f0f\u3001\u5305\u542b\u65e5\u5fd7\u7ea7\u522b\u4e0e\u4fe1\u606f\u7684\u6837\u5f0f\u548c\u5305\u542b\u65e5\u5fd7\u65f6\u95f4\u3001\u7ebf\u7a0b\u3001\u7c7b\u522b\u7b49\u4fe1\u606f\u7684\u6837\u5f0f\u3002\u00a0
\n\u5e38\u4f7f\u7528\u7684\u7c7b\u5982\u4e0b\uff1a\u00a0
\n[java]org.apache.log4j.HTMLLayout\uff08\u4ee5HTML\u8868\u683c\u5f62\u5f0f\u5e03\u5c40\uff09\u00a0
\norg.apache.log4j.PatternLayout\uff08\u53ef\u4ee5\u7075\u6d3b\u5730\u6307\u5b9a\u5e03\u5c40\u6a21\u5f0f\uff09\u00a0
\norg.apache.log4j.SimpleLayout\uff08\u5305\u542b\u65e5\u5fd7\u4fe1\u606f\u7684\u7ea7\u522b\u548c\u4fe1\u606f\u5b57\u7b26\u4e32\uff09\u00a0
\norg.apache.log4j.TTCCLayout\uff08\u5305\u542b\u65e5\u5fd7\u4ea7\u751f\u7684\u65f6\u95f4\u3001\u7ebf\u7a0b\u3001\u7c7b\u522b\u7b49\u4fe1\u606f\uff09\u00a0[\/java]<\/p>\n

\u914d\u7f6e\u6a21\u5f0f\uff1a\u00a0
\n[java]log4j.appender.appenderName.layout =className[\/java] <\/p>\n

\u4e00\u822c\u6211\u4eec\u90fd\u91c7\u7528\u7b2c\u4e8c\u79cdorg.apache.log4j.PatternLayout\uff0c\u81ea\u5b9a\u4e49\u683c\u5f0f\uff0clog4j.properties\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u8fd9\u79cd\u683c\u5f0f\u9700\u8981\u6211\u4eec\u81ea\u5b9a\u4e49\uff0c\u5982\u4e0b\u5b9a\u4e49\uff1a<\/p>\n

[java]log4j.appender.*.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] – [ %p ] %m%n[\/java]<\/p>\n

\u5176\u4e2d\u542b\u4e49\u4ecb\u7ecd\uff1a<\/p>\n

[java]%p \u8f93\u51fa\u4f18\u5148\u7ea7\uff0c\u5373DEBUG\uff0cINFO\uff0cWARN\uff0cERROR\uff0cFATAL
\n%r \u8f93\u51fa\u81ea\u5e94\u7528\u542f\u52a8\u5230\u8f93\u51fa\u8be5log\u4fe1\u606f\u8017\u8d39\u7684\u6beb\u79d2\u6570
\n%c \u8f93\u51fa\u6240\u5c5e\u7684\u7c7b\u76ee\uff0c\u901a\u5e38\u5c31\u662f\u6240\u5728\u7c7b\u7684\u5168\u540d
\n%t \u8f93\u51fa\u4ea7\u751f\u8be5\u65e5\u5fd7\u4e8b\u4ef6\u7684\u7ebf\u7a0b\u540d
\n%n \u8f93\u51fa\u4e00\u4e2a\u56de\u8f66\u6362\u884c\u7b26\uff0cWindows\u5e73\u53f0\u4e3a\u201crn\u201d\uff0cUnix\u5e73\u53f0\u4e3a\u201cn\u201d
\n%d \u8f93\u51fa\u65e5\u5fd7\u65f6\u95f4\u70b9\u7684\u65e5\u671f\u6216\u65f6\u95f4\uff0c\u9ed8\u8ba4\u683c\u5f0f\u4e3aISO8601\uff0c\u4e5f\u53ef\u4ee5\u5728\u5176\u540e\u6307\u5b9a\u683c\u5f0f\uff0c\u6bd4\u5982\uff1a%d{yyy MMM dd HH:mm:ss,SSS}\uff0c\u8f93\u51fa\u7c7b\u4f3c\uff1a2002\u5e7410\u670818\u65e5 22\uff1a10\uff1a28\uff0c921
\n%l \u8f93\u51fa\u65e5\u5fd7\u4e8b\u4ef6\u7684\u53d1\u751f\u4f4d\u7f6e\uff0c\u5305\u62ec\u7c7b\u76ee\u540d\u3001\u53d1\u751f\u7684\u7ebf\u7a0b\uff0c\u4ee5\u53ca\u5728\u4ee3\u7801\u4e2d\u7684\u884c\u6570\u3002\u4e3e\u4f8b\uff1aTestlog4.main(TestLog4.java:10)[\/java]<\/p>\n

\u4e09\u3001Log4j\u4f7f\u7528\u5b9e\u4f8b<\/h2>\n

1.\u4e0b\u8f7dlog4j.jar\u5305<\/h3>\n

\u5730\u5740: http:\/\/logging.apache.org\/log4j\/1.2\/download.html<\/p>\n

2.log4j.properties\u914d\u7f6e\u6587\u4ef6<\/h3>\n

[java]### \u8bbe\u7f6e###
\nlog4j.rootLogger = debug,stdout,D,E<\/p>\n

### \u8f93\u51fa\u4fe1\u606f\u5230\u63a7\u5236\u62ac ###
\nlog4j.appender.stdout = org.apache.log4j.ConsoleAppender
\nlog4j.appender.stdout.Target = System.out
\nlog4j.appender.stdout.layout = org.apache.log4j.PatternLayout
\nlog4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n<\/p>\n

### \u8f93\u51faDEBUG \u7ea7\u522b\u4ee5\u4e0a\u7684\u65e5\u5fd7\u5230=D:\/\/logs\/debug.log ###
\nlog4j.appender.D = org.apache.log4j.DailyRollingFileAppender
\nlog4j.appender.D.File = D:\/\/logs\/debug.log
\nlog4j.appender.D.Append = true
\nlog4j.appender.D.Threshold = DEBUG
\nlog4j.appender.D.layout = org.apache.log4j.PatternLayout
\nlog4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] – [ %p ] %m%n<\/p>\n

### \u8f93\u51faERROR \u7ea7\u522b\u4ee5\u4e0a\u7684\u65e5\u5fd7\u5230=D:\/\/logs\/error.log ###
\nlog4j.appender.E = org.apache.log4j.DailyRollingFileAppender
\nlog4j.appender.E.File =D:\/\/logs\/error.log
\nlog4j.appender.E.Append = true
\nlog4j.appender.E.Threshold = ERROR
\nlog4j.appender.E.layout = org.apache.log4j.PatternLayout
\nlog4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] – [ %p ] %m%n [\/java]<\/p>\n

3.\u4ee3\u7801\u4f7f\u7528<\/h3>\n

[java]import org.apache.log4j.Logger;<\/p>\n

public class LogTest {<\/p>\n

\u00a0\u00a0\u00a0 private static Logger logger = Logger.getLogger(LogTest.class); \u00a0\u00a0\u00a0<\/p>\n

\u00a0\u00a0\u00a0 public static void main(String[] args) { \u00a0\u00a0\u00a0\u00a0\u00a0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u8bb0\u5f55debug\u7ea7\u522b\u7684\u4fe1\u606f\u00a0\u00a0\u00a0\u00a0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 logger.debug("This is debug message."); \u00a0\u00a0\u00a0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u8bb0\u5f55info\u7ea7\u522b\u7684\u4fe1\u606f\u00a0\u00a0\u00a0\u00a0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 logger.info("This is info message."); \u00a0\u00a0\u00a0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u8bb0\u5f55error\u7ea7\u522b\u7684\u4fe1\u606f\u00a0\u00a0\u00a0\u00a0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 logger.error("This is error message."); \u00a0\u00a0
\n\u00a0\u00a0\u00a0 } \u00a0\u00a0\u00a0
\n}[\/java]<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001Log4j\u65e5\u5fd7\u4ecb\u7ecd Log4j\u662fApache\u7684\u4e00\u4e2a\u5f00\u6e90\u9879\u76ee\uff0c\u4f7f\u7528Log4j\u8fdb\u884c\u65e5\u5fd7\u64cd\u4f5c\uff0c\u6211\u4eec\u53ef\u4ee5\u63a7\u5236\u65e5\u5fd7\u4fe1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[86],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1828"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1828"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1828\/revisions"}],"predecessor-version":[{"id":1831,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1828\/revisions\/1831"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}