Jersey bean 验证 - 返回错误请求的验证消息

Hal*_*lex 0 java jersey jersey-2.0

是否可以在响应中返回错误响应的验证注释消息?我认为这是可能的,但我注意到我们的项目没有给出详细的错误请求消息。

@NotNull(message="idField is required")
@Size(min = 1, max = 15) 
private String idField;
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如果发出缺少 idField 的请求,我希望看到“需要 idField”。我正在使用球衣 2.0。我看到的回应是这样的......

{
  "timestamp": 1490216419752,
  "status": 400,
  "error": "Bad Request",
  "message": "Bad Request",
  "path": "/api/test"
}
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Jus*_*ose 7

看起来您的 Bean 验证异常 (ConstraintViolationException) 是由您的 ExceptionMappers 之一翻译的。您可以按如下所示注册一个ExceptionMapperforConstraintViolationException并以您想要的格式返回数据。ConstraintViolationException拥有您正在寻找的所有信息。

@Singleton
@Provider
public class ConstraintViolationMapper implements ExceptionMapper<ConstraintViolationException> {

  @Override
  public Response toResponse(ConstraintViolationException e) {
    // There can be multiple constraint Violations
    Set<ConstraintViolation<?>> violations = e.getConstraintViolations();
    List<String> messages = new ArrayList<>();
    for (ConstraintViolation<?> violation : violations) {
        messages.add(violation.getMessage()); // this is the message you are actually looking for

    }
    return Response.status(Status.BAD_REQUEST).entity(messages).build();
  }

}
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