log4j是否提供任何用于每日存档日志的机制? [英] Does log4j provide any mechanism to daily archive log?

问题描述

log4j 1.2是否提供每日存档日志的任何机制?

Does log4j 1.2 provide any mechanism to daily archive log?

每个人都说我可以通过org.apache.log4j.rolling.TimeBasedRollingPolicy做到这一点，但是在1.2.15的源代码中我看不到任何TimeBasedRollingPolicy类.

Everybody say that i can do it via org.apache.log4j.rolling.TimeBasedRollingPolicy but in sources of 1.2.15 i don't see any TimeBasedRollingPolicy class.

我找到了解决方法:

<appender name="FILE" class="org.apache.log4j.rolling.RollingFileAppender">
   <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/>

   <rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
       <param name="ActiveFileName" value="${jboss.server.log.dir}/server.log"/>
       <!-- roll log file once a day -->
       <param name="FileNamePattern" value="${jboss.server.log.dir}/archives/server.log.%d.gz"/>
   </rollingPolicy>

   <!-- A PatternLayout that limits the number of lines in stack traces -->
   <layout class="com.mtvi.log4j.StackTraceLimitingPatternLayout">
       <!-- The full pattern: Date MS Priority [Category] (Thread) Message\n -->
       <param name="ConversionPattern" value="%d %-5p [%c] (%t) %m%n"/>
   </layout>
</appender>

推荐答案

您需要将自己的附加程序定义为DailyRollingFileAppender，并定义日期格式以达到最新的粒度.以下是一个名为文件"的示例附加程序，该附加程序输出到application.log并通过将日期附加到午夜之后的末尾并开始一个新文件来每天滚动文件.

You need to define your appender as DailyRollingFileAppender and define the date pattern to be up to day granularity. The following is an example appender named 'file' that outputs to application.log and rolls the file daily by appending the date to the end after midnight and starting a new file.

log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.File=application.log
log4j.appender.file.DatePattern='.'yyyy-MM-dd
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d %5p [%t] - %m%n

然后，您将需要定义记录器(或rootLogger)以输出到此附加程序.例如:

You will then need to define your loggers (or rootLogger) to output to this appender. For example:

log4j.rootLogger=debug, file

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