index.jsp前臺頁面加上這些，把值輸入之後，通過post提交到後臺。
<form action="springmvc/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/>
city: <input type="text" name="address.city"/>
<br/>
province: <input type="text" name="address.province"/>
<br/>
<input type="submit" value="Submit"/>
</form>
user.java
package com.hust.springmvc.entities;
public class User {
private String username;
private String password;
private String email;
private int age;
private Address address;
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.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 String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "User [username=" + username + ",password=" + password + ",email=" + email + ",age=" + age + ",adress"
+ address + "]";
}
}
address.java
package com.hust.springmvc.entities;
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 + "]";
}
}
SpringMVCTest.java
package com.hust.springmvc1;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.SessionAttributes;
import com.hust.springmvc.entities.User;
@Controller
@RequestMapping("/springmvc")
public class SpringMVCTest {
private static final String SUCCESS = "success";
/**
* SpringMVC 會按請求參數名和 POJO 屬性名進行自動匹配， 自動爲該對象填充屬性值。
* 支持級聯屬性。如 address.city、address.province 等
*/
@RequestMapping("/testPOJO")
public String testPOJO(User user) {
System.out.println("testPOJO User: " + user);
return SUCCESS;
}
}
這個時候控制檯就會收到前臺傳過來的所有的值，包括adress裏面的city和province。
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