log4j的应用

在eclipse 工程的src下新建log4j.properties 文件，在其中加入

log4j.rootLogger=debug,appender1

log4j.appender.appender1=org.apache.log4j.FileAppender

log4j.appender.appender1.File=C:/log.log

log4j.appender.appender1.layout=org.apache.log4j.PatternLayout

log4j.appender.appender1.layout.ConversionPattern=[%d{yyyy-MM-dd HH:mm:ss:SSS}][%C-%M] %m%n 

 

 新建测试类

 

package cn.netcenter.logger;

 

import org.apache.log4j.Logger;

 

public class LogTest {

private static Logger logger=Logger.getLogger(LogTest.class);

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

logger.debug("this is debug message");

logger.info("this is info meesage");

logger.error("this is error message");

}

 

}