接收表单参数-深入Struts2

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