Spring MVC POJO传参方式
有两POJO类
Address.java
1 package com.proc;
2
3 public class Address {
4
5 private String province;
6 private String city;
7 public String getProvince() {
8 return province;
9 }
10 public void setProvince(String province) {
11 this.province = province;
12 }
13 public String getCity() {
14 return city;
15 }
16 public void setCity(String city) {
17 this.city = city;
18 }
19 @Override
20 public String toString() {
21 return "Address [province=" + province + ", city=" + city + "]";
22 }
23 }
User.java
1 package com.proc;
2
3 public class User {
4
5 private String username;
6 private String password;
7 private String gender;
8 private String hobby;
9 private Address address;
10 public String getUsername() {
11 return username;
12 }
13 public void setUsername(String username) {
14 this.username = username;
15 }
16 public String getPassword() {
17 return password;
18 }
19 public void setPassword(String password) {
20 this.password = password;
21 }
22 public String getGender() {
23 return gender;
24 }
25 public void setGender(String gender) {
26 this.gender = gender;
27 }
28 public String getHobby() {
29 return hobby;
30 }
31 public void setHobby(String hobby) {
32 this.hobby = hobby;
33 }
34 public Address getAddress() {
35 return address;
36 }
37 public void setAddress(Address address) {
38 this.address = address;
39 }
40 @Override
41 public String toString() {
42 return "User [username=" + username + ", password=" + password
43 + ", gender=" + gender + ", hobby=" + hobby + ", address="
44 + address + "]";
45 }
46 }
JSP页面
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8" contentType="text/html; charset=utf-8"%>
2
3 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <html>
5 <head>
6
7 </head>
8
9 <body>
10 <form action="testPOJO" method="post">
11 <table>
12 <tr>
13 <td>用户名:</td><td><input type="text" name="username"/></td>
14 </tr>
15 <tr>
16 <td>密码:</td><td><input type="password" name="password"/></td>
17 </tr>
18 <tr>
19 <td>性别:</td>
20 <td>
21 <input type="radio" checked="checked" name="gender" value="male"/>男
22 <input type="radio" name="gender" value="female"/>女
23 </td>
24 </tr>
25 <tr>
26 <td>爱好：</td>
27 <td>
28 <input type="checkbox" name="hobby" value="tv">看电视
29 <input type="checkbox" name="hobby" value="ball">打球
30 <input type="checkbox" name="hobby" value="swimming">游泳
31 </td>
32 </tr>
33 <tr>
34 <td>省：</td><td><input type="text" name="address.province"/></td>
35 </tr>
36 <tr>
37 <td>市:</td><td><input type="text" name="address.city"/></td>
38 </tr>
39 <tr>
40 <td></td><td><input type="submit" value="提交"></td>
41 </tr>
42
43 </table>
44
45 </form>
46 </body>
47 </html>
控制器类：
1 package com.proc;
2
3 import org.springframework.stereotype.Controller;
4 import org.springframework.web.bind.annotation.RequestMapping;
5
6 @Controller
7 public class Test {
8
9 @RequestMapping("/testPOJO")
10 public String testPOJO(User user){
11 System.out.println(user);
12 return "hello";
13 }
14
15 }
测试：
1、进入jsp页面：
2、点击提交后，控制台输出
User [username=caoyc, password=123456, gender=male, hobby=tv,swimming, address=Address [province=sichuan, city=chengdu]]
【总结】：这里对应address属性使用的是级联属性
POJO注入数组属性
上面我们看到hobby是一个多选项。那么可以将hobby设为一个String[]类型的数组。设置后我们再次
1 @RequestMapping("/testPOJO")
2 public String testPOJO(User user){
3 System.out.println(user);
4 System.out.println(Arrays.toString(user.getHobby()));
5 return "hello";
6 }
输出结果：
1 User [username=caoyc, password=123456, gender=male, hobby=[Ljava.lang.String;@c3d34, address=Address [province=sichuan, city=chengdu]]
2 [tv, swimming]
上面如果输入中文。会出现中文乱码情况
