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接收表单参数-深入Struts2

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一 接收表单参数的三种方式


 
 
二  第一方式——使用Action属性接收参数
1、login.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 'login.jsp' starting page</title>
   
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <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="LoginAction.action" method="post">
                用户名：<input type="text" name="username">
                密码：<input type="password" name="password">
                <input type="submit" value="提交" />
        </form>
  </body>
</html>
2、struts.xml文件
<?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" namespace="/" extends="struts-default">
                <default-action-ref name="index"></default-action-ref>
                <action name="index">
                        <result>/error.jsp</result>
                </action>
                
                <action name="*_*_*" method="{2}" class="com.cakin.{3}.{1}Action">
                        <result>/result.jsp</result>
                        <result name="add">/{2}.jsp</result>
                        <result name="update">/{2}.jsp</result>
                </action>
                
                <action name="LoginAction" method="login" class="com.cakin.action.LoginAction">
                        <result>/success.jsp</result>
                </action>
        </package>
</struts>   
3、LoginAction.java
package com.cakin.action;
 
import com.opensymphony.xwork2.ActionSupport;
 
public class LoginAction extends ActionSupport {
        private String username;
        private String password;
        
        public String getUsername() {
                return username;
        }
 
        public void setUsername(String username) {
                this.username = username;
        }
 
        public String getPassword() {
                return password;
        }
 
        public void setPassword(String password) {
                this.password = password;
        }
 
        public String login(){
                System.out.println(username);
                return SUCCESS;
        }
}
4、success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
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 'success.jsp' starting page</title>
   
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <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>
    This is success JSP page. <br>
  </body>
</html>
5、测试


 
 
三  第二方式——使用Domain Model接收参数
1、login.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 'login.jsp' starting page</title>
   
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <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="LoginAction.action" method="post">
                用户名：<input type="text" name="user.username">
                密码：<input type="password" name="user.password">
                <input type="submit" value="提交" />
        </form>
  </body>
</html>
2、struts.xml文件
<?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" namespace="/" extends="struts-default">
                <default-action-ref name="index"></default-action-ref>
                <action name="index">
                        <result>/error.jsp</result>
                </action>
                
                <action name="*_*_*" method="{2}" class="com.cakin.{3}.{1}Action">
                        <result>/result.jsp</result>
                        <result name="add">/{2}.jsp</result>
                        <result name="update">/{2}.jsp</result>
                </action>
                
                <action name="LoginAction" method="login" class="com.cakin.action.LoginAction">
                        <result>/success.jsp</result>
                </action>
        </package>
</struts>   
3、LoginAction.java
package com.cakin.action;
 
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
 
public class LoginAction extends ActionSupport {
 
        private User user;
 
        public User getUser() {
                return user;
        }
 
        public void setUser(User user) {
                this.user = user;
        }
 
        public String login(){
                System.out.println(user.getUsername());
                return SUCCESS;
        }
}
4、User.java
package com.cakin.po;
 
public class User {
        private String username;
        
        private String password;
        
        public String getUsername() {
                return username;
        }
        public void setUsername(String username) {
                this.username = username;
        }
        public String getPassword() {
                return password;
        }
        public void setPassword(String password) {
                this.password = password;
        }
}
5、测试


 
 
四  第三方式——使用ModelDriven接收参数
1、login.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 'login.jsp' starting page</title>
   
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <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="LoginAction.action" method="post">
                用户名：<input type="text" name="username">
                密码：<input type="password" name="password">
                <input type="submit" value="提交" />
        </form>
  </body>
</html>
2、LoginAction.java
package com.cakin.action;
 
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
 
public class LoginAction extends ActionSupport implements ModelDriven<User>{
 
        private User user =new User();
 
        public String login(){
                System.out.println(user.getUsername());
                return SUCCESS;
        }
 
        @Override
        public User getModel() {
                // TODO Auto-generated method stub
                return user;
        }
}
3、测试


 
 
五  综合——使用ModelDriven接收列表参数
1、login.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 'login.jsp' starting page</title>
   
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <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="LoginAction.action" method="post">
                用户名：<input type="text" name="username">
                密码：<input type="password" name="password">
                书籍1：<input type="text" name="booklist[0]">
                书籍2：<input type="text" name="booklist[1]">
                <input type="submit" value="提交" />
        </form>
  </body>
</html>
2、User.java
package com.cakin.po;
 
import java.util.List;
 
public class User {
        private String username;
        
        private String password;
        
        private List<String> booklist;
        
        public List<String> getBooklist() {
                return booklist;
        }
        public void setBooklist(List<String> booklist) {
                this.booklist = booklist;
        }
        public String getUsername() {
                return username;
        }
        public void setUsername(String username) {
                this.username = username;
        }
        public String getPassword() {
                return password;
        }
        public void setPassword(String password) {
                this.password = password;
        }
}
3、LoginAction.java
package com.cakin.action;
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class LoginAction extends ActionSupport implements ModelDriven<User>{
    private User user =new User();
    public String login(){
        System.out.println(user.getUsername());
        System.out.println(user.getBooklist().get(0));
        System.out.println(user.getBooklist().get(1));
        return SUCCESS;
    }
    @Override
    public User getModel() {
        // TODO Auto-generated method stub
        return user;
    }
}
4、测试


 
 
六  综合——使用ModelDriven接收对象参数
1、login.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 'login.jsp' starting page</title>
   
        <meta http-equiv="pragma" content="no-cache">
        <meta http-equiv="cache-control" content="no-cache">
        <meta http-equiv="expires" content="0">   
        <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="LoginAction.action" method="post">
                用户名：<input type="text" name="username">
                密码：<input type="password" name="password">
                书籍1：<input type="text" name="booklist[0].username">
                书籍2：<input type="text" name="booklist[1].username">
                <input type="submit" value="提交" />
        </form>
  </body>
</html>
2、User.java
package com.cakin.po;
 
import java.util.List;
 
public class User {
        private String username;
        
        private String password;
        
        private List<User> booklist;
        
        public List<User> getBooklist() {
                return booklist;
        }
        public void setBooklist(List<User> booklist) {
                this.booklist = booklist;
        }
        public String getUsername() {
                return username;
        }
        public void setUsername(String username) {
                this.username = username;
        }
        public String getPassword() {
                return password;
        }
        public void setPassword(String password) {
                this.password = password;
        }
}
3、LoginAction.java
package com.cakin.action;
import com.cakin.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class LoginAction extends ActionSupport implements ModelDriven<User>{
    private User user =new User();
    public String login(){
        System.out.println(user.getUsername());
        System.out.println(user.getBooklist().get(0).getUsername());
        System.out.println(user.getBooklist().get(1).getUsername());
        return SUCCESS;
    }
    @Override
    public User getModel() {
        // TODO Auto-generated method stub
        return user;
    }
}
 
4、测试

 



 
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