01.创建登录界面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>                  
         
         
             
         
         
           
     
       
      
                   
        
                        
用户名：
                        
                    
                    
                        
密码：
                        
                    
                    
                        
                        
                    
              
      
   
     
  

02.配置struts.xml文件

     
      
           
             
                  
        
         /success.jsp
              
           
      
     

03.创建对应的UserAction

package cn.bdqn.action;import java.util.Map;import javax.servlet.ServletContext;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;/** *  用户登录的action *  jsp九大内置对象 *   *  out *  page *  pageContext *  request *  response *  session *  application *  config *  exception */public class UserAction extends ActionSupport{/**    public  String  login(){          获取前台的值          01.耦合方式  不推荐使用        String name = ServletActionContext.getRequest().getParameter("name");        String password = ServletActionContext.getRequest().getParameter("password");        System.out.println(name);        System.out.println(password);        //放入作用域        ServletActionContext.getRequest().setAttribute("name",name);        ServletActionContext.getRequest().setAttribute("password",password);        return  SUCCESS;    }*/        /**     * 登录的方法     02. 解耦两种方法              001. 使用ActionContext!       sturts2在底层把我们的request,session,application用Map集合保存起来了！     */    private  String  name;    private  String  password;        public  String  login(){    Map
     
       request=(Map
      
       ) ActionContext.getContext().get("request");    //让success.jsp获取数据    request.put("name",name);//  等同于setAttribute("name",name);     request.put("password",password);        return  SUCCESS;    }            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;    }        }
      
     

04.使用第二种解耦的方式 ，就是实现对应的Aware接口

import org.apache.struts2.interceptor.RequestAware;import com.opensymphony.xwork2.ActionSupport;/** *  实现对应的Aware接口 */public class UserAction2 extends ActionSupport implements RequestAware{    private  String  name;    private  String  password;    private Map
     
       request;  //并不用写 set和get        //登录的方法    public  String  login(){    request.put("name",name);     request.put("password",password);        return  SUCCESS;    }    //重写方法   给请求request赋值    @Override    public void setRequest(Map
      
        request) {        this.request=request;            }            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;    }            }
      
     

05.success.jsp

===============el表达式获取数据=============
  ${name}  ${password} 
   ===============struts2标签获取数据=============
   
      <%--值栈中获取的    --%>   
       <%--栈的上下文中获取的    --%>