我正在尝试在我的 java 应用程序中使用 log4j
。我需要仅将 DEBUG
日志写入 debug.log 文件,仅将 INFO
日志写入 info.log 文件,仅将 ERROR
日志写入 error.log文件。我设法将调试和错误日志写入相应的文件,但信息不起作用。我不明白为什么它不起作用。我想请求您的帮助是否也可以同时仅将调试和信息日志写入控制台。
结果
每个级别的日志创建 3 个文件(debug.log、info.log 和 error.log) DEBUG 日志写入 debug.log,ERROR 日志写入 error.log,但 INFO 日志既不写入 info.log,也不写入 debug.log 或 error.log!
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<!-- only DEBUG Appender -->
<appender name="file1" class="org.apache.log4j.FileAppender">
<param name="File" value="D:\\debugFile.log "/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-4r %d{dd MMM yyyy HH:mm:ss} [%t] %-5p %c %x - %m%n"/>
</layout>
<!-- Use LevelMatchFilter to write only DEBUG messages to error.log -->
<filter class="org.apache.log4j.varia.LevelMatchFilter">
<param name="LevelToMatch" value="debug" />
<param name="AcceptOnMatch" value="true"/>
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter" />
</appender>
<!-- only INFO Appender -->
<appender name="file2" class="org.apache.log4j.FileAppender">
<param name="File" value="D:\\infoFile.log "/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-4r %d{dd MMM yyyy HH:mm:ss} [%t] %-5p %c %x - %m%n"/>
</layout>
<!-- Use LevelMatchFilter to write only INFO messages to error.log -->
<filter class="org.apache.log4j.varia.LevelMatchFilter">
<param name="LevelToMatch" value="info" />
<param name="AcceptOnMatch" value="true"/>
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter" />
</appender>
<!-- only ERROR Appender -->
<appender name="file3" class="org.apache.log4j.FileAppender">
<param name="File" value="D:\\errorFile.log "/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-4r %d{dd MMM yyyy HH:mm:ss} [%t] %-5p %c %x - %m%n"/>
</layout>
<!-- Use LevelMatchFilter to write only ERROR messages to error.log -->
<filter class="org.apache.log4j.varia.LevelMatchFilter">
<param name="LevelToMatch" value="error" />
<param name="AcceptOnMatch" value="true"/>
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter" />
</appender>
<root>
<level value="info"/>
<appender-ref ref="file1" /> <!-- sadece DEBUG -->
<appender-ref ref="file2" /> <!-- sadece INFO -->
<appender-ref ref="file3" /> <!-- sadece ERROR -->
</root>
</log4j:configuration>
最佳答案
稍微修改了一下,效果很好
<?xml version="1.0" encoding="UTF-8"?>
<appender name="stdout" class="org.apache.log4j.ConsoleAppender">
<param name="target" value="System.out"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n"/>
</layout>
</appender>
<appender name="info" class="org.apache.log4j.RollingFileAppender">
<param name="Threshold" value="INFO" />
<param name="MaxFileSize" value="3KB" />
<param name="MaxBackupIndex" value="10" />
<param name="File" value="D:\\info.txt" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{MMM-dd-yyyy HH:mm:ss:SSS} %-5p %m%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
<param name="LevelToMatch" value="info" />
<param name="AcceptOnMatch" value="true"/>
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter" />
</appender>
<appender name="debug" class="org.apache.log4j.RollingFileAppender">
<param name="Threshold" value="DEBUG" />
<param name="MaxFileSize" value="3KB" />
<param name="MaxBackupIndex" value="10" />
<param name="File" value="D:\\debug.txt" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{MMM-dd-yyyy HH:mm:ss:SSS} %-5p %m%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
<param name="LevelToMatch" value="debug" />
<param name="AcceptOnMatch" value="true"/>
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter" />
</appender>
<appender name="error" class="org.apache.log4j.RollingFileAppender">
<param name="Threshold" value="ERROR" />
<param name="MaxFileSize" value="3KB" />
<param name="MaxBackupIndex" value="10" />
<param name="File" value="D:\\error.txt" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{MMM-dd-yyyy HH:mm:ss:SSS} %-5p %m%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelMatchFilter">
<param name="LevelToMatch" value="error" />
<param name="AcceptOnMatch" value="true"/>
</filter>
<filter class="org.apache.log4j.varia.DenyAllFilter" />
</appender>
<root>
<level value="all"/>
<appender-ref ref="info" />
<appender-ref ref="debug" />
<appender-ref ref="error" />
</root>
关于java - 使用 log4j 记录到不同的文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22270098/