SSH2中的No result defined for action的有关问题。

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name></display-name>    
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
  <filter>
      <filter-name>struts2</filter-name>
      <filter-class>
          org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
      </filter-class>
  </filter>
  <filter-mapping>
      <filter-name>struts2</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping></web-app>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <package name="default" extends="struts-default">
        <!-- 配置名为 login的action -->
        <action name="login" class="login">
                        <result name="pe">/pe.jsp</result>
            <result name="success">/success.jsp</result>
        </action>
    </package>
</struts>    

package com.zjj.action;

import com.opensymphony.xwork2.ActionSupport;
import com.zjj.service.AdminService;

public class Login extends ActionSupport {
    /**
     * 
     */
    private static final long serialVersionUID = 1459299920038614538L;
    private AdminService adminService;
    private Integer adminId;
    private String name;
    private String password;

    public AdminService getAdminService() {
        return adminService;
    }

    public void setAdminService(AdminService adminService) {
        this.adminService = adminService;
    }

    public Integer getAdminId() {
        return adminId;
    }

    public void setAdminId(Integer adminId) {
        this.adminId = adminId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    public String execute() throws Exception {
        if(name.equals("zjj")){
            if(password.equals("123")){
                return "success";
            }
            else
                return "pe";
        }
        else 
            return "pe";
        
    }
}