Spring支持多种形式的类型绑定，包括：
1、基本数据类型、String和String[]
2、简单对象类型
3、List类型
4、Set类型
5、Map类型
6、复合数据类型
接下来一个一个的实现：
1、基本数据类型、String和String[]。
请求处理方法：
public void registBean(String username,int age,double income,String[] interests,boolean marrid)
保证JSP页面上提交项和方法中对应参数同名。其中boolean的提交项的value是字符串true和false。
2、简单对象类型
请求处理方法：
public void registBean(UserBean2 user)
需要保证JSP页面上提交项和UserBean对象中的属性同名即可。
3、List类型
List需要绑定在Bean对象上,直接写在请求处理方法中作为参数是不行的,更重要的一点是要创建对象(ArrayList).
public class UserBean2{
private List<AddressListBean> list= new ArrayList<AddressListBean>();
}
请求处理方法：
public void registBean(UserBean2 user)
JSP页面上提交项的命名：参数名[下标].属性名。
4、 Set类型
与List方法类似，但是必须先在Set对象中Add相应的数量的模型对象.
public class UserBean2{
private Set<AddressSetBean> set= new HashSet<AddressSetBean>();
public Classes(){
set.add(new AddressSetBean());
set.add(new AddressSetBean());
set.add(newAddressSetBean());
}
}
5、Map对象
Map也需要绑定在Bean对象上。
public class UserBean2{
private Map<String String> map= new HashMap<String String>();
}
请求处理方法：
public void registBean(UserBean2 user)
JSP页面上的提交项命名：参数名[‘键名’]
6、复合数据类型
所谓复合数据类型，指代自定义Bean中某个属性又是一个自定义Bean.
public class UserBean2{
private String name;
private int age;
private AddressBean address;
}
请求处理方法：
public void registBean(UserBean2 user)
JSP页面提交项命名：复合属性名.属性名
主要代码：
1 package com.cy.springannotation.entity; 2 3 import java.util.ArrayList; 4 import java.util.HashMap; 5 import java.util.HashSet; 6 import java.util.List; 7 import java.util.Map; 8 import java.util.Set; 9 10 11 public class UserBean2 { 12 private String username; 13 private int age; 14 private double income; 15 private String[] interests; 16 private boolean married; 17 //List不能单独使用，必须要绑定到某一个具体的Bean,并且要实例化ArrayList 18 private List<AddressListBean> list=new ArrayList<AddressListBean>(); 19 //Set不能单独使用，必须要绑定到某一个具体的Bean,并且要实例化HashSet 20 private Set<AddressSetBean> set=new HashSet<AddressSetBean>(); 21 //Map不能单独使用，必须要绑定到某一个具体的Bean,并且要实例化HashMap 22 private Map<String,AddressMapBean> map=new HashMap<String,AddressMapBean>(); 23 //复合数据类型 24 private AddressBean address; 25 26 public UserBean2(){ 27 //set集合需要提前定义个数 28 for(int i=0;i<2;i++){ 29 AddressSetBean asb=new AddressSetBean(); 30 set.add(asb); 31 } 32 33 } 34 public String getUsername() { 35 return username; 36 } 37 public void setUsername(String username) { 38 this.username = username; 39 } 40 public int getAge() { 41 return age; 42 } 43 public void setAge(int age) { 44 this.age = age; 45 } 46 public double getIncome() { 47 return income; 48 } 49 public void setIncome(double income) { 50 this.income = income; 51 } 52 public String[] getInterests() { 53 return interests; 54 } 55 public void setInterests(String[] interests) { 56 this.interests = interests; 57 } 58 public boolean isMarried() { 59 return married; 60 } 61 public void setMarried(boolean married) { 62 this.married = married; 63 } 64 65 public Map<String, AddressMapBean> getMap() { 66 return map; 67 } 68 public void setMap(Map<String, AddressMapBean> map) { 69 this.map = map; 70 } 71 72 public Set<AddressSetBean> getSet() { 73 return set; 74 } 75 public void setSet(Set<AddressSetBean> set) { 76 this.set = set; 77 } 78 public List<AddressListBean> getList() { 79 return list; 80 } 81 public void setList(List<AddressListBean> list) { 82 this.list = list; 83 } 84 public AddressBean getAddress() { 85 return address; 86 } 87 public void setAddress(AddressBean address) { 88 this.address = address; 89 } 90 91 }
页面设置“
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8" contentType="text/html; charset=utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>注册页面</title> 13 14 <meta http-equiv="pragma" content="no-cache"> 15 <meta http-equiv="cache-control" content="no-cache"> 16 <meta http-equiv="expires" content="0"> 17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 18 <meta http-equiv="description" content="This is my page"> 19 <!-- 20 <link rel="stylesheet" type="text/css" href="styles.css"> 21 --> 22 23 </head> 24 25 <body> 26 <form action="regist.do" method="post"> 27 <table> 28 <tr> 29 <td>用户名：</td> 30 <td><input type="text" name="username"/></td> 31 </tr> 32 <tr> 33 <td>年龄：</td> 34 <td><input type="text" name="age"/></td> 35 </tr> 36 <tr> 37 <td>收入：</td> 38 <td><input type="text" name="income"/></td> 39 </tr> 40 <tr> 41 <td>兴趣：</td> 42 <td><input type="checkbox" name="interests" value="看书"/>看书 43 <input type="checkbox" name="interests" value="上网"/>上网 44 <input type="checkbox" name="interests" value="唱歌"/>唱歌 45 <input type="checkbox" name="interests" value="运动"/>运动 46 <input type="checkbox" name="interests" value="散步"/>散步 47 </td> 48 </tr> 49 <tr> 50 <td>是否结婚：</td> 51 <td><input type="radio" name="married" value="true" checked="checked"/>是 52 <input type="radio" name="married" value="false" />否 53 </td> 54 </tr> 55 <tr> 56 <td>list地址1：</td> 57 <td><input type="text" name="list[0].addressListName"/></td> 58 </tr> 59 <tr> 60 <td>list地址2：</td> 61 <td><input type="text" name="list[1].addressListName"/></td> 62 </tr> 63 64 <tr> 65 <td>set地址1：</td> 66 <td><input type="text" name="set[0].addressSetName"/></td> 67 </tr> 68 <tr> 69 <td>set地址2：</td> 70 <td><input type="text" name="set[1].addressSetName"/></td> 71 </tr> 72 <tr> 73 <td>map地址1：</td> 74 <td><input type="text" name="map['a0'].addressMapName"/></td> 75 </tr> 76 <tr> 77 <td>map地址2：</td> 78 <td><input type="text" name="map['a1'].addressMapName"/></td> 79 </tr> 80 <tr> 81 <td>地址：</td> 82 <td><input type="text" name="address.addressName"/></td> 83 </tr> 84 <tr> 85 <td colspan="2"> <input type="submit" value="注册"/> </td> 86 </tr> 87 </table> 88 </form> 89 </body> 90 </html>
业务控制器：
1 package com.cy.springannotation.controller; 2 3 import org.apache.log4j.Logger; 4 import org.springframework.stereotype.Controller; 5 import org.springframework.web.bind.annotation.RequestMapping; 6 7 import com.cy.springannotation.entity.AddressListBean; 8 import com.cy.springannotation.entity.AddressSetBean; 9 import com.cy.springannotation.entity.UserBean2; 10 11 @Controller 12 public class RegistController { 13 private Logger log = Logger.getLogger(this.getClass()); 14 15 16 /* @RequestMapping("/regist.do") 17 public String regist(String username,int age,double income,String[] interests,boolean married){ 18 log.info("username="+username); 19 log.info("age="+age); 20 log.info("income="+income); 21 log.info("interests="+interests.length); 22 log.info("married="+married); 23 for (String string : interests) { 24 log.info("兴趣有："+string); 25 } 26 return "index"; 27 28 } 29 */ 30 //简单对象类型 31 @RequestMapping("/regist.do") 32 public String registBean(UserBean2 user){ 33 log.info("username:"+user.getUsername()); 34 log.info("age:"+user.getAge()); 35 log.info("income:"+user.getIncome()); 36 log.info("interests.length:"+user.getInterests().length); 37 log.info("married:"+user.isMarried()); 38 log.info("addressList.size():"+user.getList().size()); 39 log.info("addressSet.size():"+user.getSet().size()); 40 log.info("addressMap.size():"+user.getMap().size()); 41 log.info("address:"+user.getAddress().getAddressName()); 42 43 for (String string : user.getInterests()) { 44 log.info("具体的兴趣有=========" + string); 45 } 46 47 for(AddressListBean add:user.getList()){ 48 log.info("具体的list地址有=========" + add.getAddressListName()); 49 } 50 51 for(AddressSetBean asetb:user.getSet()){ 52 log.info("具体的set地址有=========" + asetb.getAddressSetName()); 53 } 54 55 for(int i=0;i<2;i++){ 56 log.info("具体的map地址有=========" + user.getMap().get("a"+i).getAddressMapName()); 57 } 58 59 return "index"; 60 } 61 62 63 }
控制台显示：
数据绑定over。
