java - 即使请求正文中存在错误，BindingResult 也不会显示错误

Question

我要验证传入请求正文中的字段验证错误，但 BindingResult 中没有捕获任何错误。

我尝试在 DTO 中使用 @Valid 注释和约束注释，但它不起作用。

这是我的 Controller 类

管理 Controller

@Slf4j
@RestController
@RequestMapping("/admin/staff")
@CrossOrigin("*")
public class AdminController {

  @Autowired
  private AdminService adminService;

  @PreAuthorize("hasAnyRole('ROLE_SUPER_ADMIN')")
  @PutMapping("/{id}")
  public ResponseEntity<GenericResponse<UserDetailsDTO>> updateUser(
      @PathVariable("id") String userId, @Valid @RequestBody
      GenericRequest<StaffUpdateRequestDTO> request, BindingResult bindingResult
  ) {
    exceptionDTO.setMessageId(request.getHeader().getMsgId());
    if(bindingResult.hasErrors()){
      throw ValidationError.builder().bindingResult(bindingResult).build();
    }
    if(!userId.equalsIgnoreCase(request.getTxnRequest().getUserDetails().getUserId())){
     throw ValidationError.builder().bindingResult(bindingResult).build();
    }
    GenericResponse<UserDetailsDTO> response = new GenericResponse<>();
    response.setHeader(adminUtil.createResponseHeader());
    response.getHeader().setMsgId(request.getHeader().getMsgId());
    response.getHeader().setChannelId(request.getHeader().getChannelId());
    response.setTxnResponse(adminService.saveUser(request.getTxnRequest()));
    return ResponseEntity.status(HttpStatus.OK).body(response);
  }

}

这是 DTO

通用请求

@Data
public class GenericRequest<T> {

  @NotNull(message = "Validation failure")
  private HeaderDTO header;

  @NotNull(message = "Validation failure")
  private T txnRequest;
}

标题DTO

@Data
public class HeaderDTO {

  @NotNull
  @NotEmpty
  private String msgId;

  @NotNull
  @NotEmpty
  private String timestamp;

  @NotNull
  @NotEmpty
  private String channelId;
}

StaffUpdateRequestDTO

@Data
public class StaffUpdateRequestDTO {

  @NotNull(message = "Validation failure")
  private UserDetailsDTO userDetails;

  @NotNull(message = "Validation failure")
  @NotEmpty(message = "Validation Failure")
  private String approvedBy;

}

用户详细信息DTO

@Data
public class UserDetailsDTO {

  @NotEmpty(message = "Validation failure")
  @NotNull(message = "Validation failure")
  private String userId;
  @NotEmpty(message = "Validation failure")
  @NotNull(message = "Validation failure")
  private String userName;
  @NotNull(message = "Validation failure")
  @NotEmpty(message = "Validation failure")
  private String emailId;
  @NotEmpty(message = "Validation failure")
  @NotNull(message = "Validation failure")
  private String countryCode;
  @NotNull(message = "Validation failure")
  private List<RoleDetailsDTO> roles;
}

角色详细信息DTO

@Data
public class RoleDetailsDTO {

  @NotEmpty(message = "Validation failure")
  @NotNull(message = "Validation failure")
  private String roleId;
  @NotEmpty(message = "Validation failure")
  @NotNull(message = "Validation failure")
  private String roleName;
}

即使我不从 UserDetailsDTO 发送某些字段，BindingResult 错误检查也会在以下行中失败:

if(bindingResult.hasErrors()){
      throw ValidationError.builder().bindingResult(bindingResult).build();
    }

发送请求正文的示例:

{
    "header":{
        "msgId":"87612983612",
        "timestamp":"2019-08-05T12:12:12.122",
        "channelId":"BDSHK"
    },
    "txnRequest":{
        "userDetails":{
                "userId": "deepakkumarc",
                "userName": "Deepak Kumar Choudhary",
                "roles": [
                    {
                        "roleId": "SUPER_ADMIN",
                        "roleName": "SUPER ADMIN"
                    },
                    {
                        "roleId":"LI_PRODUCT_ADMIN",
                        "roleName":"LIFE INSURANCE PRODUCT ADMIN"
                    },
                    {
                        "roleId":"GI_PRODUCT_ADMIN",
                        "roleName":"GENERAL INSURANCE PRODUCT ADMIN"
                    }
                ]
        },
        "approvedBy":"deepakkumarc"
    }
}

如上所示，我没有发送 emailId 和 CountryCode，但这通过了验证。期望的是，如果任何验证失败，则会收到验证错误。

如何对此请求正文实现验证？

Answer 1

我终于明白出了什么问题。我们需要将 @Valid 放在字段级别，如下所示:

@Data
public class StaffUpdateRequestDTO {

  @NotNull(message = "Validation failure")
  @Valid
  private UserDetailsDTO userDetails;

  @NotNull(message = "Validation failure")
  @NotEmpty(message = "Validation Failure")
  private String approvedBy;

}