Java验证: Validate an object within an object

Question

我有两个对象:

public class CancelRequest{
 @NotEmpty
 private String id;

 @NotNull
 private BookingDetails;
}

BookingDetails 对象:

public class BookingDetails{
 @NotEmpty
 private String bookingId;
}

我负责验证请求的类是CancelRequestValidator

...
import javax.validation.Validator;
...
public class CancelRequestValidator{
...
public void check(CancelRequest request){
 Set<ConstraintViolation<NorthAmericaCancelTripRequest>> violations = 
validator.validate(request);
...
 }
}

我如何执行验证？

CancelRequest request = new CancelRequest("id",new BookingDetails(""));
CancelValidator validator = new CancelValidator();
violations = validator.check(request);

该违规行为中应该有一个条目，表示 bookingId 不能为空，但它认为该对象有效。我需要以这种方式进行验证，因为我需要对此对象执行一些其他业务验证，因此我混合使用 javax 和自定义验证。

谢谢

Answer 1

要执行嵌套 bean 验证，您需要在嵌套对象上使用 @Valid 注解:

public class CancelRequest{
  @NotEmpty
  private String id;

  @NotNull
  @Valid
  private BookingDetails;
}