Spring参数注解，支持数组入参（List）校验

CNZYYH2023-08-24 23:58

Spring参数注解，支持数组入参（List）校验

1、controller类增加@Validated注解，对应的数组参数增加@Valid注解。

javascript 复制代码

@Validated
@RestController
@RequestMapping("/parent")
public class ParentController {

  private FatherRepository fatherRepository;

  /**
   * DI
   */
  public ParentController(FatherRepository fatherRepository) {
    this.fatherRepository = fatherRepository;
  }

  @PostMapping("/test")
  public void test(@RequestBody @Valid List<Father> fathers) {

  }
}

2、对返回的校验信息异常进行全局捕获，封装后返回。

java 复制代码

@RestControllerAdvice
@Component
public class ControllerExceptionHandler {

  /**
   * handle controller methods parameter validation exceptions
   *
   * @param exception ex
   * @return wrapped result
   */
  @ExceptionHandler
  @ResponseBody
  @ResponseStatus(HttpStatus.OK)
  public DataContainer handle(ConstraintViolationException exception) {

    Set<ConstraintViolation<?>> violations = exception.getConstraintViolations();
    StringBuilder builder = new StringBuilder();
    for (ConstraintViolation<?> violation : violations) {
      builder.append(violation.getMessage());
      break;
    }
    DataContainer container = new DataContainer(CommonCode.PARAMETER_ERROR_CODE, builder.toString());
    return container;
  }
}

参考 https://stackoverflow.com/questions/28150405/validation-of-a-list-of-objects-in-spring