struts2 简单应用

 web.xml(WEB-INF)

 1  <? xml version="1.0" encoding="UTF-8" ?>
 2  < web-app  xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
 3      xmlns ="http://java.sun.com/xml/ns/javaee"  xmlns:web ="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 4      xsi:schemaLocation ="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 5      id ="WebApp_ID"  version ="2.5" >
 6 
 7       < filter >
 8           < filter-name > struts2 </ filter-name >
 9           < filter-class > org.apache.struts2.dispatcher.FilterDispatcher </ filter-class >
10       </ filter >
11 
12       < filter-mapping >
13           < filter-name > struts2 </ filter-name >
14           < url-pattern > /* </ url-pattern >
15       </ filter-mapping >
16 
17 
18  </ web-app >

struts.xml(src)

 1  <? xml version="1.0" encoding="UTF-8" ?>
 2  <! DOCTYPE struts PUBLIC
 3      "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
 4      "http://struts.apache.org/dtds/struts-2.0.dtd" >
 5 
 6  < struts >
 7       < package  name ="mypackage"  extends ="struts-default" >
 8 
 9           < action  name ="login"  class ="com.kofzhoubiwen.action.LoginAction" >
10               < result  name ="LOGIN_Y" > /WEB-INF/jsp/welcome.jsp </ result >
11               < result  name ="LOGIN_N" > /WEB-INF/jsp/login.jsp </ result >
12           </ action >
13 
14           < action  name ="getweather"  class ="com.kofzhoubiwen.action.GetWeatherAction"   />
15 
16           < action  name ="getuser"  class ="com.kofzhoubiwen.action.GetUserAction"   />
17 
18       </ package >
19  </ struts >

LoginAction.java

 1  package  com.kofzhoubiwen.action;
 2 
 3  import  com.kofzhoubiwen.impl.LoginServiceImpl;
 4  import  com.opensymphony.xwork2.ActionSupport;
 5 
 6  public   class  LoginAction  extends  ActionSupport {
 7       private  String username;
 8       private  String password;
 9       public  String getUsername() {
10           return  username;
11      }
12       public   void  setUsername(String username) {
13           this .username  =  username;
14      }
15       public  String getPassword() {
16           return  password;
17      }
18       public   void  setPassword(String password) {
19           this .password  =  password;
20      }
21      LoginServiceImpl loginserviceimpl = new  LoginServiceImpl();
22      @Override
23       public  String execute()  throws  Exception {
24          
25           if (loginserviceimpl.login(username, password)){
26               return   " LOGIN_Y " ;
27          }
28           else {
29               return   " LOGIN_N " ;
30          }
31      }
32  }

LoginService.java

1  package  com.kofzhoubiwen.servlet;
2 
3  public   interface  LoginService {
4       public  Boolean login(String username,String password);
5  }

LoginServiceImpl

 1  package  com.kofzhoubiwen.impl;
 2 
 3  import  com.kofzhoubiwen.servlet.LoginService;
 4 
 5  public   class  LoginServiceImpl  implements  LoginService {
 6 
 7      @Override
 8       public  Boolean login(String username, String password) {
 9           if  ( " admin " .equals(username)  &&   " 123456 " .equals(password)) {
10               return   true ;
11          }
12           else
13               return   false ;
14      }
15  }

login.jsp(WEB-INF/jsp)

 1  <% @ page language = " java "  contentType = " text/html; charset=ISO-8859-1 "
 2      pageEncoding = " ISO-8859-1 " %>
 3  <! DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" >
 4  < html >
 5  < head >
 6  < meta  http-equiv ="Content-Type"  content ="text/html; charset=ISO-8859-1" >
 7  < title > Insert title here </ title >
 8  </ head >
 9  < body >
10       < form  action ="login.action" >
11          user name: < input  type ="text"  name ="username"   />< br  />
12          password: < input  type ="password"  name ="password"   />< br  />
13           < input  type ="submit"  value ="submit"   />< br  />
14       </ form >
15  </ body >
16  </ html >