logback.xml例子

<?xml version="1.0" encoding="UTF-8"?>
<configuration  scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>projectName</contextName>
    <property name="contextName" value="projectName" />
    <property name="log_dir" value="./logs/" />
    <!--输出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <!-- 级别过滤器。如果日志级别低于WARN，将被过滤掉。 ALL TRACE DEBUG INFO WARN ERROR-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %msg - %file:%line%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>
    
    <!-- 每天记录info级别日志文件 -->
    <appender name="InfoRollingFileAppender"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <Prudent>true</Prudent>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss} %-5level %msg - %file:%line%n</Pattern>
        </layout>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>${log_dir}/${contextName}_info%d{yyyy-MM-dd}.log
            </FileNamePattern>
        </rollingPolicy>
        <!-- 级别过滤器。如果日志级别低于WARN，将被过滤掉。ALL TRACE DEBUG INFO WARN ERROR-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
        <!-- 除了DEBUG级别的日志，其它什么级别的日志都不要 -->
        <!-- <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY </onMismatch>
        </filter> -->
    </appender>
    
    <!-- 每天记录ERROR级别日志文件 -->
    <appender name="ErrorRollingFileAppender"
        class="ch.qos.logback.core.rolling.RollingFileAppender">
        <Prudent>true</Prudent>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>%d{yyyy-MM-dd HH:mm:ss} %-5level %msg - %file:%line%n</Pattern>
        </layout>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>${log_dir}/${contextName}_error%d{yyyy-MM-dd}.log
            </FileNamePattern>
        </rollingPolicy>
        <!-- 级别过滤器。如果日志级别低于WARN，将被过滤掉。 -->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>
        <!-- 除了DEBUG级别的日志，其它什么级别的日志都不要 -->
        <!-- <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY </onMismatch>
        </filter> -->
    </appender>

    <root>
        <appender-ref ref="console" />
        <appender-ref ref="InfoRollingFileAppender" />
        <appender-ref ref="ErrorRollingFileAppender" />
    </root>
</configuration>