Struts2--属性设置方式

时间：2024-05-05 11:36:08

Struts2自动获取/设置数据的方式一共分为两种

  • 属性驱动（FieldDriven）
  • 模型驱动（ModelDriven）
  1. 属性驱动

属性又分为两种：

|- 基本数据类型

|- JavaBean属性类型

基本数据类型：实例

 <%@ page language="java" pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <title>Insert title here</title>

 </head>

 <body>

     <form action="hello" method="get">

         姓名；<input type="text" name="name" size="10px" value="fuwh" readonly="readonly"/>&nbsp;

         年龄：<input type="text" name="age" size="10px" value="23" readonly="readonly"/>

         <button type="submit">提交</button>

     </form>

 </body>

 </html>
package com.fuwh.struts;

import com.opensymphony.xwork2.Action;

import com.opensymphony.xwork2.ModelDriven;

public class HelloAction implements Action{

    private String name;

    private int age;

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public int getAge() {

        return age;

    }

    public void setAge(int age) {

        this.age = age;

    }

    @Override

    public String execute() throws Exception {

        // TODO Auto-generated method stub

        System.out.println("执行了HelloAction的默认方法");

        return SUCCESS;

    }

}
 <%@ page language="java" pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <title>Insert title here</title>

 </head>

 <body>

 欢迎${age }岁的${name }光临

 </body>

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

 <!DOCTYPE struts PUBLIC

     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

     "http://struts.apache.org/dtds/struts-2.3.dtd">

 <struts>

     <package name="mypack" extends="struts-default">

         <action name="hello" class="com.fuwh.struts.HelloAction">

             <result name="success">hello.jsp</result>

         </action>

     </package>

 </struts>

JavaBean属性类型

 package com.fuwh.struts;

 public class User implements java.io.Serializable{

     private static final long serialVersionUID = 1L;

     private String name;

     private int age;

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this.name = name;

     }

     public int getAge() {

         return age;

     }

     public void setAge(int age) {

         this.age = age;

     }

 }
 <%@ page language="java" pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <title>Insert title here</title>

 </head>

 <body>

     <form action="hello" method="get">

         姓名；<input type="text" name="user.name" size="10px" value="fuwh" readonly="readonly"/>&nbsp;

         年龄：<input type="text" name="user.age" size="10px" value="23" readonly="readonly"/>

         <button type="submit">提交</button>

     </form>

 </body>

 </html>
 package com.fuwh.struts;

 import com.opensymphony.xwork2.Action;

  public class HelloAction implements Action{ 

    private User user 

    public User getUser() {

         return user;

     }

     public void setUser(User) {

         this.user = user;

     }

     @Override

     public String execute() throws Exception {

         // TODO Auto-generated method stub

         System.out.println("执行了HelloAction的默认方法");

         return SUCCESS;

     }

 }
 <%@ page language="java" pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <title>Insert title here</title>

 </head>

 <body>

 欢迎${user.age }岁的${user.name }光临

 </body>

 </html>

struts.xml配置

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

 <!DOCTYPE struts PUBLIC

     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

     "http://struts.apache.org/dtds/struts-2.3.dtd">

 <struts>

     <package name="mypack" extends="struts-default">

         <action name="hello" class="com.fuwh.struts.HelloAction">

             <result name="success">hello.jsp</result>

         </action>

     </package>

 </struts>

模型驱动

 <%@ page language="java" pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <title>Insert title here</title>

 </head>

 <body>

     <form action="hello" method="get">

         姓名；<input type="text" name="name" size="10px" value="fuwh" readonly="readonly"/>&nbsp;

         年龄：<input type="text" name="age" size="10px" value="23" readonly="readonly"/>

         <button type="submit">提交</button>

     </form>

 </body>

 </html>
 package com.fuwh.struts;

 import com.opensymphony.xwork2.Action;

 import com.opensymphony.xwork2.ModelDriven;

 public class HelloAction implements Action,ModelDriven{

     private User user=new User();

     @Override

     public String execute() throws Exception {

         // TODO Auto-generated method stub

         System.out.println("执行了HelloAction的默认方法mae");

         return SUCCESS;

     }

     @Override

     public User getModel() {

         // TODO Auto-generated method stub

         System.out.println("执行了getModel方法");

         return this.user;

     }

 }
 <%@ page language="java" pageEncoding="UTF-8"%>

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

 <html>

 <head>

 <title>Insert title here</title>

 </head>

 <body>

 欢迎${age }岁的${name }光临

 </body>

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

 <!DOCTYPE struts PUBLIC

     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

     "http://struts.apache.org/dtds/struts-2.3.dtd">

 <struts>

     <package name="mypack" extends="struts-default">

         <action name="hello" class="com.fuwh.struts.HelloAction">

             <result name="success">hello.jsp</result>

         </action>

     </package>

 </struts>

Struts处理多值参数

普通类型

普通类型和负责类型一样，可以选择用集合来接收，也可以用数组来接收

复杂类型

package com.fuwh.demo;

public class User {

    private int age;

    private String name;

    public int getAge() {

        return age;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    @Override

    public String toString() {

        return "User [age=" + age + ", name=" + name + "]";

    }

}
<%@ page language="java" pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Insert title here</title>

</head>

<body>

<form action="show" method="post">

    兴趣爱好:<input type="text" name="stu[0].age" value="5">

            <input type="text" name="stu[0].name" value="fuwh1"><br/>

            <input type="text" name="stu[1].age" value="6">

            <input type="text" name="stu[1].name" value="fuwh2"><br/>

            <input type="text" name="stu[2].age" value="7">

            <input type="text" name="stu[2].name" value="fuwh3"><br/>

    <input type="submit">

</form>

</body>

</html>
package com.fuwh.demo;

import java.util.List;

import com.opensymphony.xwork2.Action;

public class Show implements Action{

    private List<User> stu;

    public List<User> getStu() {

        System.out.println("execut the get method!");

        return stu;

    }

    public void setStu(List<User> stu) {

        System.out.println("execute the set method!");

        this.stu = stu;

    }

    @Override

    public String execute() throws Exception {

        // TODO Auto-generated method stub

        System.out.println("执行了action的默认方法");

        System.out.println(stu);

        return SUCCESS;

    }

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

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"

    "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>

    <!-- 开启debug模式，会自动加载配置文件等等，不用每次更改了配置文件就去重新启动下服务器 -->

    <constant name="struts.devMode" value="true" />

    <package name="test"  extends="struts-default">

        <action name="show" class="com.fuwh.demo.Show">

            <result name="success">hello.jsp</result>

        </action>

    </package>

</struts>
<%@ page language="java" pageEncoding="UTF-8"%>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<html>

<head>

<title>Insert title here</title>

</head>

<body>

学生们:${stu}

</body>

</html>

最后出力结果：

Struts2--属性设置方式

Struts2--属性设置方式

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