如何知道一个访客在一个网站上停留多长时间?
package org.javaer.test;
import java.util.Date;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
public class TestSession extends HttpServlet implements HttpSessionListener {
private static final long serialVersionUID = 1L;
public void sessionCreated(HttpSessionEvent arg0) {
// TODO Auto-generated method stub
System.out.print("访问时间--------");
System.out.println(new Date().toString());
}
public void sessionDestroyed(HttpSessionEvent arg0) {
// TODO Auto-generated method stub
System.out.print("离开时间--------");
System.out.println(new Date().toString());
}
}
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>EncodingFilter</filter-name>
<filter-class>org.javaer.servlet.EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.javaer.test.TestSession</listener-class>
</listener>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
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上面两个分别是我的SERVLET 和web.xml文件。
现在出现的问题是用户退出的时候。sessionDestroyed 方法不能被执行