Log4j日志编写

package test;

import org.apache.struts.action.*;
import javax.servlet.http.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;


public class loginAction extends Action {
public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
Log loger = LogFactory.getLog("loginAction");
loger.info("log info");
loger.debug("log debug");
loger.warn("log warn");
System.out.println("ok");
return(actionMapping.findForward("login"));
}
}



注意要配置文件：log4j.properties

路径放到classes下面。

##LOGGERS##
#定义Log 可操作项
log4j.rootLogger=INFO,console,file

##APPENDERS##
#定义控制台类
log4j.appender.console=org.apache.log4j.ConsoleAppender

#定义 log文件,默认路径在服务器下
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=log.txt

##LAYOUTS##
# 定义控制台版面类
log4j.appender.console.layout=org.apache.log4j.SimpleLayout

# 定义文件版面类
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=\u6211\u7684\u7a0b\u5f0f\u65e5\u5fd7: %p %d{yyyy-MM-dd HH:mm:ss} %c - %m%n