SpringMVC之使用 POJO 对象绑定请求参数值

Spring MVC 会按请求参数名和 POJO 属性名进行自动匹
配，自动为该对象填充属性值。支持级联属性。
如：dept.deptId、dept.address.tel 等

示例：

User实体类

package com.led.entities;

/**

 * @author Alan

 * @date 2018/5/26 15:02

 */

public class User {

    private String username;

    private String password;

    private int age;

    private String email;

    private Address address;

    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 int getAge() {

        return age;

    }

    public void setAge(int age) {

        this.age = age;

    }

    public String getEmail() {

        return email;

    }

    public void setEmail(String email) {

        this.email = email;

    }

    public Address getAddress() {

        return address;

    }

    public void setAddress(Address address) {

        this.address = address;

    }

    @Override

    public String toString() {

        return "User{" +

                "username='" + username + '\'' +

                ", password='" + password + '\'' +

                ", age=" + age +

                ", email='" + email + '\'' +

                ", address=" + address +

                '}';

    }

}

Address实体类

package com.led.entities;

/**

 * @author Alan

 * @date 2018/5/26 15:04

 */

public class Address {

    private String province;

    private String city;

    public String getProvince() {

        return province;

    }

    public void setProvince(String province) {

        this.province = province;

    }

    public String getCity() {

        return city;

    }

    public void setCity(String city) {

        this.city = city;

    }

    @Override

    public String toString() {

        return "Address{" +

                "province='" + province + '\'' +

                ", city='" + city + '\'' +

                '}';

    }

}

处理类：

package com.led.test;

import com.led.entities.User;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.*;

/**

 * @author Alan

 * @date 2018/5/25 22:03

 */

@Controller

@RequestMapping("/test")

public class SpringMVCTest {

    private static final String SUCCESS = "success";

    @RequestMapping("/testPojo")

    public String testPojo(User user){

        System.out.println("User: " + user);

        return SUCCESS;

    }

}

jsp页面：

<form action="test/testPojo" method="post">

    username:<input type="text" name="username"/><br>

    password:<input type="password" name="password"/><br>

    email:<input type="text" name="email"/><br>

    age:<input type="text" name="age"/><br>

    province:<input type="text" name="address.province"/><br>

    city:<input type="text" name="address.city"/><br>

    <input type="submit" value="submit">

</form>

运行项目，输入信息：

点击提交按钮，控制台输出：

User: User{username='xiaoming', password='123456', age=11, email='[e-mail]', address=Address{province='xizang', city='lasa'}}