Question

我希望log4j输出INFO级别到info.log和DEBUG级别到debug.log，以便使用这段代码：

logger.info("This is an info message");
logger.debug("This is a debug message");

只有第一个会转到info.log，而两个都转到debug.log。

这不起作用：

log4j.rootLogger=INFO, R, T

# A1 is set to be a ConsoleAppender.
log4j.appender.A1=org.apache.log4j.ConsoleAppender

# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%r %-5p %c %x - %m%n

log4j.appender.R=org.apache.log4j.FileAppender
log4j.appender.R.File=info.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
log4j.appender.R.Threshold = INFO

log4j.appender.T=org.apache.log4j.FileAppender
log4j.appender.T.File=debug.log
log4j.appender.T.layout=org.apache.log4j.PatternLayout
log4j.appender.T.layout.ConversionPattern=%p %t %c - %m%n
log4j.appender.T.Threshold = DEBUG

这两个都没有：

log4j.rootLogger=INFO, R
log4j.rootLogger=DEBUG, T

log4j.appender.R=org.apache.log4j.FileAppender
log4j.appender.R.File=info.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
log4j.appender.R.Threshold = INFO

log4j.appender.T=org.apache.log4j.FileAppender
log4j.appender.T.File=debug.log
log4j.appender.T.layout=org.apache.log4j.PatternLayout
log4j.appender.T.layout.ConversionPattern=%p %t %c - %m%n
log4j.appender.T.Threshold = DEBUG

Answer 1

您可以使用过滤器org.apache.log4j.varia.LevelMatchFilter。 e.g：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN"
                                     "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

    <!-- INFO appender -->
    <appender name="INFOFILE" class="org.apache.log4j.FileAppender">
        <param name="file" value="info.log" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="conversionPattern"
                value="%d{yyyyMMdd-HHmmss.SSS} %-5p (%c.java:%L).%M - %m%n" />
        </layout>
        <filter class="org.apache.log4j.varia.LevelMatchFilter">
            <param name="levelToMatch" value="INFO" />
        </filter>
    </appender>

    <!-- DEBUG appender -->
    <appender name="DEBUGFILE" class="org.apache.log4j.FileAppender">
        <param name="file" value="debug.log" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="conversionPattern"
                value="%d{yyyyMMdd-HHmmss.SSS} %-5p (%c.java:%L).%M - %m%n" />
        </layout>
        <filter class="org.apache.log4j.varia.LevelMatchFilter">
            <param name="levelToMatch" value="DEBUG" />
        </filter>
    </appender>

    <!-- root -->
    <root>
        <priority value="ALL" />
        <appender-ref ref="INFOFILE" />
        <appender-ref ref="DEBUGFILE" />
    </root>

</log4j:configuration>

将所有这些放在默认包中的一个文件中：log4j.xml。

RootLogger将不同的级别输出到不同的文件

1 个答案: