17SpringMvc_在业务控制方法中写入包装User的模型来收集参数——解决问题

在解决问题之前，我要说明一下jsp页面上填入信息，一个用户的信息比如用户的名字，用户的电话，用户的手机等等，在这个jsp页面上填好信息后，转到有个action处理这个信息。原理是什么？

在jsp页面上有一行代码，form action="${pageContext.request.contextPath}/user/register.action"那么jsp页面提交的时候机会提交到这个action。然后根据这个定位到

public String registerMethod(Bean bean,Model model)，这里有一个参数，bean。
bean里面又封装了user类和admin类。所以user和admin才是里面的基础元素。

jsp上面的页面就会根据这个bean的结构，把jsp的内容自动写入到这个bean中。但是切记<input type="text" name="admin.username"
这里的name要和实体类的名字一模一样，这里的admin就是bean里面的一个属性username是admin里面的属性。

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前一篇文章，讲了在业务方法中多个模型收集参数有一个问题，现在这篇文章就来解决一上一篇文章的问题。

User和Admin是两个不同的实体类。我们解决问题的方法是：

如果多个模型中有相同的属性时，可以用user.username或admin.username来收集客户端参数。就是用一个新的模型将User和Admin再封装一次。

给出案例的结构图：

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" alt="" />

上面结构图中用到了Admin.java;Bean.java;UserAction.java;springmvc_008.xml;spring.xml;web.xml;person.xml;

下面给出具体的案例代码：我只给出person.jsp的代码以及UserAction(控制器).java。

person.jsp：注意：<input type="text" name="user.username" value="${user.username }" /></td>

value="${user.username }是为了回显数据，不写也没事。

name的写法都是这么写的。因为bean把uesr和admin又包了一层，相当于user.name和admin.name才是最基础的元素。

<%@ 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="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
  </head>
  <body>
  <hr>
普通用户
  <form action="${pageContext.request.contextPath}/user/register.action" method="post">
   <table border="2" align="center">
   <tr>
     <th>姓名</th>
     <td> <input type="text" name="user.username" value="${user.username }" /></td>
   </tr>
     <tr>
     <th>薪水</th>
     <td> <input type="text"
                  name="user.salary"
                  value="${!empty user.salary?user.salary:'2012'}" />

     </td>
   </tr>
    <tr>
     <th>入职时间</th>
     <!--
     ${!empty user.hiredate?user.hiredate:'2015-4-3 12:12:12'}
     表示user.hiredate不是为空的话就给他赋user.hiredate的值
       如果是空的就给他赋'2015-4-3 12:12:12'这个值。
     -->
     <td> <input
     type="text"
     name="user.hiredate"

      value="${!empty user.hiredate?user.hiredate:'2015-4-3 12:12:12'} "/></td>
   </tr>

   <tr>
   <td>
     <input type="submit" value="普通用户注册">
   </td>
   </tr>
   </table>

  </form>
    </hr>

        <hr>
   管理员用户
     <form action="${pageContext.request.contextPath}/user/register.action" method="post">
   <table border="2" align="center">
   <tr>
     <th>姓名</th>
     <td> <input type="text" name="admin.username" value="${admin.username }"  /></td>
   </tr>

    <tr>
     <th>薪水</th>
     <td> <input type="text"
                  name="admin.salary"
                  value="${admin.salary }" />
     </td>
   </tr>
    <tr>
     <th>入职时间</th>
     <!--
     ${!empty user.hiredate?user.hiredate:'2015-4-3 12:12:12'}
     表示user.hiredate不是为空的话就给他赋user.hiredate的值
       如果是空的就给他赋'2015-4-3 12:12:12'这个值。
     -->
     <td> <input
     type="text"
     name="admin.hiredate"

      value="${admin.hiredate }"/></td>
   </tr>

   <tr>
   <td>
     <input type="submit" value="管理员注册">
   </td>
   </tr>
   </table>
  </form>
    </hr>
  </body>
</html>

UserAction.java的代码：

package com.guigu.shen.Action8;

import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
/**
 *
 *
请求路径可以拆分为：根模块的名字+分模块的名字
就是相当于当访问http://127.0.0.1:8080:项目名/user/register时就会进入到
registerMethod方法。
 */
@Controller
@RequestMapping(value="/user")//根模块的请求名字
public class UserAction {
    /*
     * 员工注册
     *
     */
@RequestMapping(method=RequestMethod.POST,value="/register")//分模块的请求名字
/*
采用模型的方式(User)来收集从页面传来的参数。
方法里面的参数user和以前的参数一样会被用反射的方式去赋值。
bean类把User和Admin又封装了一层。
 */
public String registerMethod(Bean bean,Model model)
{
     //打印出user里面的信息
    System.out.println("员工的信息是"+bean.getUser());
    //打印出Admin的信息
    System.out.println("管理员的信息"+bean.getAdmin());
    //将user和admin绑定到model对象中去。
model.addAttribute("user", bean.getUser());
    model.addAttribute("admin", bean.getAdmin());
    //model.addAttribute("bean", bean);
    //数据回显到person.jsp页面
    return "/person.jsp";
}

/**
 * 自定义类型转换器
 * 就是说当Date类型的数据不能得到时，会自动查找@InitBinder注解过的方法
 *
 */
@InitBinder
protected void initBinder(HttpServletRequest request,ServletRequestDataBinder binder) throws Exception {
    binder.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));
}

}

bean类代码：

package com.guigu.shen.Action8;

public class Bean {
private User user;
private Admin admin;
/**
 * @return the user
 */
public User getUser() {
    return user;
}
/**
 * @param user the user to set
 */
public void setUser(User user) {
    this.user = user;
}
/**
 * @return the admin
 */
public Admin getAdmin() {
    return admin;
}
/**
 * @param admin the admin to set
 */
public void setAdmin(Admin admin) {
    this.admin = admin;
}

}

结果：测试一切正常。