使用Spring Rest控制器和Spring Data JPA仅更新从@RequestBody传递的实体属性

@RestController
@RequestMapping("/api")
public class UserController {
    
    @Autowired
    private UserRepository userRepository;
    
    @PatchMapping("/users/{id}")
    public ResponseEntity<String> updateUser(@PathVariable Long id, @RequestBody User updatedUser) {
        Optional<User> optionalUser = userRepository.findById(id);
        
        if (optionalUser.isPresent()) {
            User user = optionalUser.get();
            
            // 更新实体对象的属性
            user.setName(updatedUser.getName());
            user.setEmail(updatedUser.getEmail());
            
            // 保存更新后的实体对象
            userRepository.save(user);
            
            return ResponseEntity.ok("User updated successfully.");
        } else {
            return ResponseEntity.notFound().build();
        }
    }
}