接上章内容，我们看看浏览器参数如何映射到我们的Controller层
我们新建UserController和User实
User.java
package com.example.main;
import java.io.Serializable;
public class User implements Serializable {
/**
*
*/
private static final long serialVersionUID = -7359143284242091031L;
private Long id;
private String name;
private Integer age;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
UserController.java
package com.example.demo.controller; import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; import com.example.main.User; @RestController
public class UserController { @RequestMapping("/user")
public User user(Long id,String name,int age){
User user = new User();
user.setId(id);
user.setName(name);
user.setAge(18);
return user;
}
}
参数映射的方式有三种：
第一种：参数映射
@RestController
public class UserController { @RequestMapping("/user")
public User user(Long id,String name,int age){
User user = new User();
user.setId(id);
user.setName(name);
user.setAge(age);
return user;
}
}
在浏览器访问，携带参数
第二种：对象映射
@RequestMapping("/user")
public User user(User user){
return user;
}
在浏览器访问，携带参数
第三种：通过ServletRequest对象
@RequestMapping("/user")
public User user(ServletRequest request){
Long id=Long.valueOf(request.getParameter("id"));
String name =request.getParameter("name");
int age =Integer.parseInt(request.getParameter("age")) ;
User user = new User();
user.setId(id);
user.setName(name);
user.setAge(age);
return user;
}