Question

我正在使用ConstraintValidator实现，如下所示，用于验证Spring Boot REST服务的请求对象

@Target({ FIELD, METHOD, PARAMETER, ANNOTATION_TYPE })
@Retention(RUNTIME)
@Constraint(validatedBy = MyRequestValidator.class)
@Documented
public @interface MyRequestValidation {

    String message() default "Mandatory fields missing";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};
}

public class MyRequestValidator
            implements
                ConstraintValidator<MyRequestValidation, MyRequest>{
   @Override
    public void initialize(MyRequestValidation constraintAnnotation) {
        // Nothing to do here
    }
   @Override
    public boolean isValid(MyRequest myRequest, ConstraintValidatorContext context) {
 //do some validation
     context.disableDefaultConstraintViolation();    
     context.buildConstraintViolationWithTemplate("Id can contain only alphabets and digits")
    .addPropertyNode("id")
    .addConstraintViolation();
   }
}

//REST end point
public interface RestApi{
  @Produces(MediaType.XML)
  @Consumes(MediaType.XML)
  @POST
  MyResponse action(@MyRequestValidation MyRequest myRequest);
}

@Component
public class RestApiImpl implements RestApi {
..
}

这产生的输出为

[PARAMETER]
[myRequest.arg0.id]
[Id can contain only alphabets and digits]

无论如何，都可以生成JSON或XML消息（或基于REST端点上的@Produces批注）。我正在使用这些接口ConstraintValidatorContext的Hibernate实现

ConstraintValidator的自定义消息

0 个答案: