Log4j2 示例 不同类log到不同的文件

Log4j2 示例

1. 在项目中lib中加入要使用的jar

2. 在src文件夹下，写配置文件log4j2.xml

<?xml version="1.0" encoding="UTF-8"?><configuration status="warn">
    <Properties>
        <Property name="test1logDir">log/test1</Property>
        <Property name="test1logFile">test1.log</Property>
        <Property name="test1logRollingFile">test1Rolling.log</Property>
		
        <Property name="test2logDir">log/test2</Property>
        <Property name="test2logFile">test2.log</Property>
        <Property name="test2logRollingFile">test2Rolling.log</Property>
    </Properties>
    
    <appenders>
        <!--fileName中如果使用相对路径，则是相对于工程路径。这里是 工程路径/log/test1/test1.log-->
        <File name="test1File" fileName="${test1logDir}/${test1logFile}" append="false">
            <PatternLayout pattern="%d{HH:mm:ss} %-5level %class{36}  %L %M - %msg%xEx%n"/>
        </File>
        <RollingFile name="test1RollingFile" fileName="${test1logDir}/${test1logRollingFile}" append="true"
                             filePattern="${test1logDir}/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
            <PatternLayout pattern="%d{yyyy-MM-dd 'at' HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n"/>
            <SizeBasedTriggeringPolicy size="4 MB"/>
        </RollingFile>
		
        <File name="test2File" fileName="${test2logDir}/${test2logFile}" append="false">
            <PatternLayout pattern="%d{HH:mm:ss} %-5level %class{36}  %L %M - %msg%xEx%n"/>
        </File>
        <RollingFile name="test2RollingFile" fileName="${test2logDir}/${test2logRollingFile}" append="true"
                             filePattern="log/test2/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
            <PatternLayout pattern="%d{yyyy-MM-dd 'at' HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n"/>
            <SizeBasedTriggeringPolicy size="4 MB"/>
        </RollingFile>
    </appenders>
    
    <loggers>
        <Logger name="test1Logger" additivity="TRUE" level="ALL">
            <AppenderRef ref="test1File" level="ALL" />
            <AppenderRef ref="test1RollingFile" level="ALL" />
        </Logger>
        <Logger name="test2Logger" additivity="TRUE" level="ALL">
            <AppenderRef ref="test2RollingFile" level="ALL" />
        </Logger>
    </loggers>
</configuration>

3. 写两个class做测试

public class Log4J2TestClass{
    //配置文件中logger的名字
    static Logger logger = LogManager.getLogger("test1Logger");
    public static void log(){
        logger.info("log---------");
    }
}
class Log4jTestclass2{
    static Logger logger = LogManager.getLogger("test2Logger");
    public static void log(){
        logger.info("log++++++++++");
    }
}
class TestMain{
    public static void main(String[] args) {
        Log4J2TestClass.log();
    }
}

其他有用的link：

http://www.cnblogs.com/KissKnife/p/3958086.html