详解Log4j 日志文件存放位置设置

<context-param>   <param-name>webAppRootKey</param-name>   <param-value>webApp.root</param-value>  </context-param>  <context-param>  <param-name>log4jConfigLocation</param-name>   <param-value>classpath:log4j.properties</param-value>  </context-param> <listener>     <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>   </listener> 

log4j.appender.logfile.File=${user.home}/logs/app.log

public class log4jlistener implements ServletContextListener {   public static final String log4jdirkey = "log4jdir";   public void contextDestroyed(ServletContextEvent servletcontextevent) {     System.getProperties().remove(log4jdirkey);   }   public void contextInitialized(ServletContextEvent servletcontextevent) {   String log4jdir = servletcontextevent.getServletContext().getRealPath("/");   //System.out.println("log4jdir:"+log4jdir);   System.setProperty(log4jdirkey, log4jdir);   } } 

<listener>   <listener-class>com.log4j.log4jlistener</listener-class> </listener>