我在控制器的寄存器函数中添加了@Valid注释，现在我得到了javax.validation.ValidationException错误

这是发送到控制器的内容：

JSON: {"username":"testy9001@test.com","password":"test","firstName":"First","lastName":"Last","langKey":"en-US","enabled":false}

@RequestMapping(value = "/register", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<?> registerAccount(@Valid @RequestBody User userDTO) {
        User user = null;
        if (/* user authenticating */) {
            return ResponseEntity.badRequest()
                    .contentType(MediaType.TEXT_PLAIN)
                    .body(error);
        } else {
            user = userService.createUserInformation(userDTO.getUsername().toLowerCase(), encoder.encode(userDTO.getPassword()), userDTO.getFirstName(), userDTO.getLastName(), userDTO.getLangKey());

            mailService.sendEmail(user, env.getRequiredProperty("default.mail."+env.getRequiredProperty("spring.profiles.active")+".url"), MailType.ACTIVATION);
            return new ResponseEntity<>(user, HttpStatus.OK);
        }
    }

这是控制器：

JSON: {"username":"testy9001@test.com","password":"test","firstName":"First","lastName":"Last","langKey":"en-US","enabled":false}

@RequestMapping(value = "/register", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<?> registerAccount(@Valid @RequestBody User userDTO) {
        User user = null;
        if (/* user authenticating */) {
            return ResponseEntity.badRequest()
                    .contentType(MediaType.TEXT_PLAIN)
                    .body(error);
        } else {
            user = userService.createUserInformation(userDTO.getUsername().toLowerCase(), encoder.encode(userDTO.getPassword()), userDTO.getFirstName(), userDTO.getLastName(), userDTO.getLangKey());

            mailService.sendEmail(user, env.getRequiredProperty("default.mail."+env.getRequiredProperty("spring.profiles.active")+".url"), MailType.ACTIVATION);
            return new ResponseEntity<>(user, HttpStatus.OK);
        }
    }

---

我不确定这是什么原因造成的，我相信它是@Valid，但我已经删除了好几次，我仍然得到了这个错误。是否有其他人遇到过这样的问题？如果您能够纠正此问题，请提供用户类代码，并且，您是否可以添加第二个参数BindingResult到方法并打印出结果。getFieldError？通过这种方式，您可以检查它是否与@Valid注释有关。