相关疑难解决方法(0)

是否有更新的方式只有一些领域使用该方法的实体对象save从春数据JPA？

例如,我有一个像这样的JPA实体:

@Entity
public class User {

  @Id
  private Long id;

  @NotNull
  private String login;

  @Id
  private String name;

  // getter / setter
  // ...
}

凭借其CRUD回购:

public interface UserRepository extends CrudRepository<User, Long> { }

在Spring MVC中,我有一个控制器,它获取一个User对象来进行更新:

@RequestMapping(value = "/rest/user", method = RequestMethod.PUT, produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public ResponseEntity<?> updateUser(@RequestBody User user) {

   // Assuming that user have its id and it is already stored in the database,
   // and …