使用 log4j 记录到不同的文件

Question

我正在尝试在我的 java 应用程序中使用 log4j。我只需要将 DEBUG 日志写入 debug.log 文件，仅将 INFO 日志写入 info.log 文件，并且仅将 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。我想请教您是否可以同时将调试日志和信息日志写入控制台。 结果

为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>

Answer 1

我稍微修改了一下，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>