Struts2简单例子

Struts实现注册功能

ControlFilter.java

 package com.jikexueyuan.filter;

 import java.io.IOException;

 import javax.servlet.Filter;

 import javax.servlet.FilterChain;

 import javax.servlet.FilterConfig;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletResponse;

 import javax.servlet.http.HttpServletRequest;

 import com.jikexueyuan.pojo.users;

 public class ControlFilter implements Filter {

     public void destroy() {

         // TODO Auto-generated method stub

     }

     public void doFilter(ServletRequest arg0, ServletResponse arg1,

             FilterChain arg2) throws IOException, ServletException {

         HttpServletRequest request = (HttpServletRequest) arg0;

         //1接收用户请求的地址

         String url = request.getServletPath();

         //2判断用户请求的地址，并执行相应的程序

         if(url.equals("/register.action")){

             request.getRequestDispatcher("register.jsp").forward(arg0, arg1);

             return;

         }else if(url.equals("/saveUser.action")){

             String username = request.getParameter("username");

             String password = request.getParameter("password");

             String password1 = request.getParameter("password1");

             if(password.equals(password1)){

                 users us = new users();

                 us.setName(username);

                 us.setPassword(password);

                 //执行相关DAO持久化操作

                 request.getRequestDispatcher("end.jsp").forward(arg0, arg1);

                 return;

             }else{

                 request.getRequestDispatcher("register.jsp").forward(arg0, arg1);

                 return;

             }

         }

         //3跳转到相应的结果页面

         arg2.doFilter(arg0, arg1);

     }

     public void init(FilterConfig arg0) throws ServletException {

         // TODO Auto-generated method stub

     }

 }

users.java

 package com.jikexueyuan.pojo;

 public class users {

     private int id;

     private String name;

     private String password;

     public int getId() {

         return id;

     }

     public void setId(int id) {

         this.id = id;

     }

     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;

     }

 }

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <base href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">

    <meta http-equiv="cache-control" content="no-cache">

    <meta http-equiv="expires" content="">

    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

    <meta http-equiv="description" content="This is my page">

    <!--

    <link rel="stylesheet" type="text/css" href="styles.css">

    -->

  </head>

  <body>

    <a href="register.action">注册</a>

  </body>

</html>

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>My JSP 'register.jsp' starting page</title>

     <meta http-equiv="pragma" content="no-cache">

     <meta http-equiv="cache-control" content="no-cache">

     <meta http-equiv="expires" content="">

     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

     <meta http-equiv="description" content="This is my page">

     <!--

     <link rel="stylesheet" type="text/css" href="styles.css">

     -->

   </head>

   <body>

        <form action="saveUser.action" method="post">

            <input type="text" name="username"/><br>

            <input type="password" name="password"/><br>

            <input type="password" name="password1"/><br>

            <input type="submit" value="提交">

        </form>

   </body>

 </html>

end.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>My JSP 'end.jsp' starting page</title>

     <meta http-equiv="pragma" content="no-cache">

     <meta http-equiv="cache-control" content="no-cache">

     <meta http-equiv="expires" content="">

     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

     <meta http-equiv="description" content="This is my page">

     <!--

     <link rel="stylesheet" type="text/css" href="styles.css">

     -->

   </head>

   <body>

     <h3>注册成功<h3>

   </body>

 </html>

web.xml 配置

 <?xml version="1.0" encoding="UTF-8"?>

 <web-app version="2.5"

     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_2_5.xsd">

   <welcome-file-list>

     <welcome-file>index.jsp</welcome-file>

   </welcome-file-list>

   <filter>

       <filter-name>ControlFilter</filter-name>

       <filter-class>com.jikexueyuan.filter.ControlFilter</filter-class>

   </filter>

   <filter-mapping>

       <filter-name>ControlFilter</filter-name>

       <url-pattern>/*</url-pattern>

   </filter-mapping>

 </web-app>

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