post请求成功后，Postman返回空值

Question

当我在Postman上发送请求时，我收到了一个' 200 ok ';的地位。但是get请求返回空JSON值

这是我的用户类

public class User {
private Integer id;
private String name;
private Date birthDate;

public User(Integer id, String name, Date birthDate) {
super();
this.id = id;
this.name = name;
this.birthDate = birthDate;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthDate() {
return birthDate;
}
public void setBirthDate(Date birthDate) {
this.birthDate = birthDate;
}
@Override
public String toString() {
return String.format("User [id=%s, name=%s, birthDate=%s]", id, name, birthDate);
}
}

UserDaoService类

@Component
public class UserDaoService {
static List<User> users = new ArrayList<>();

public static int userCount = 3;

static {
users.add(new User(1,"Eva",new Date()));
users.add(new User(2,"Mike",new Date()));
users.add(new User(3,"Dave",new Date()));
}

public List<User> findAllUsers() {
return users;
}

public User save(User user) {

if(user.getId() == null)
user.setId(++userCount);

users.add(user);
return user;
}

public User findOne(int id) {

for(User user:users )
if(user.getId() == id)
return user;

return null;
}

}

和控制器

@RestController
public class UserResource {

@Autowired
private UserDaoService service;
@GetMapping("/users")
public List<User> retrieveAllUsers(){
return service.findAllUsers();
}

@GetMapping("users/{id}")
public User retrieveUser(@PathVariable int id) {
return service.findOne(id);
}

@PostMapping("/users")
public void createUser(User user) {
User saved = service.save(user);
}

}

这是我发出的post请求

{
"name": "Luna",
"birthDate": "2000-08-23T23:58:45.849+00:00"
}

我没有传递ID，因为这是在后端覆盖。在发出get请求时，name和birthDates都为空值，但ID被正确设置。

你知道我哪里做错了吗?

Answer 1

post方法参数中缺少@RequestBody

@PostMapping("/users")
public void createUser(@RequestBody User user) {
User saved = service.save(user);
}