structs.xml 中用 include 了structs-yxwl.xml 

structs-yxwl.xml 内容如下

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

    <package name="default" extends="struts-default"  namespace="/">    

        <action name="loginaction" class="struts2.LoginAction">   

              <result name="success">/index.jsp</result>

              <result name="error">/error.html</result>

        </action>

    </package>

</struts>

--------------------

web.xml 中设置如下:

 <servlet> 

    <servlet-name>loginValidateServlet</servlet-name>

    <servlet-class>servlet.loginValidateServlet</servlet-class>

  </servlet> 

  <servlet-mapping>

    <servlet-name>loginValidateServlet</servlet-name>

    <url-pattern>/index.jsp</url-pattern>

  </servlet-mapping>

----------------------

我逻辑是:

当用进入 http://192.168.1.xxx:8888/yxwl 时 缺省页面为 index.jsp 主页面



当进入主页面时  调用servlet.loginValidateServlet  判断当前用户是否登录

servlet.loginValidateServlet 的代吗如下:



package servlet;

import ..........

..................

import Gen.md5uitl;

import Gen.cookieuitl;

import com.yxwl.model.*;



public class loginValidateServlet extends HttpServlet {



	private static final long serialVersionUID = 1L;

	public loginValidateServlet() {	super();	}

	public void destroy() {	super.destroy(); }



	public void doGet(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {

		this.doPost(request, response);		

	}



	public void doPost(HttpServletRequest request, HttpServletResponse response)

			throws ServletException, IOException {



	    response.setCharacterEncoding("gb2312");			   

	    Cookie cookie= cookieuitl.getCookieByName(request, "yxwl_Login");

	   

	    try{

	    	 

	           if(cookie!=null){

		   //用户已登录

				

		    }else {

                         //用户未登录, 跳到登录页面

		       	 response.sendRedirect("login.jsp");

		    }

	    }catch(Exception ex){