log4j.rootLogger=INFO,stdout,R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
#其中log4j提供4種佈局
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
#R 輸出到文件 RollingFileAppender的擴展,可以提供一種日誌的備份功能。
log4j.appender.R=org.apache.log4j.RollingFileAppender
#日誌文件的名稱
log4j.appender.R.File=${webappHome}logs/wisdomxf.log
#日誌文件的大小
log4j.appender.R.MaxFileSize=20KB
#保存一個備份文件
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n
package com.zwj.tools;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @模塊功能:讀取log4j 配置文件
* @UserName 周文俊
* @Mail [email protected]
* @Date 2010-11-19
* @Version V1.0
*/
public class Log4jInit extends HttpServlet {
private static final long serialVersionUID = 1L;
private static Logger logger = Logger.getLogger(Log4jInit.class);
public void init() {
String prefix = getServletContext().getRealPath("/");
String file = getInitParameter("log4j-init-file");
System.setProperty("webappHome", prefix);
if (file != null) {
PropertyConfigurator.configure(prefix + file);
logger.info(">>>>>>>>>Log4j 日誌記錄器 已啓動..............");
}
}
public void doGet(HttpServletRequest req, HttpServletResponse res) {
}
}
[color=red]web.xml[/color]
<!-- log4j日誌 -->
<servlet>
<servlet-name>log4j-init</servlet-name>
<servlet-class>com.zwj.tools.Log4jInit</servlet-class>
<init-param>
<param-name>log4j-init-file</param-name>
<param-value>WEB-INF/classes/log4j.properties</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>