java - 如何在自定义约束注解的约束违规消息中显示字段名称描述？

Question

如何在Bean Validation 1.1 (JSR-349)的约束违反消息中显示字段名称描述自定义约束注释？

例如，给定以下自定义约束注释@Required、资源包ValidationMessages.properties和类Person，我该如何编写约束违规消息“First Name is required.”(必填字段firstName)和“Last Name is required.”(必填字段)姓氏？

@Documented
@Constraint(validatedBy = {})
@Target({ ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE })
@Retention(RetentionPolicy.RUNTIME)
@NotEmpty
@ReportAsSingleViolation
public @interface Required {
    public abstract Class<?>[] groups() default {};
    public abstract String message() default "{Required.message}";
    public abstract Class<? extends Payload>[] payload() default {};
}

在资源包中，ValidationMessages.properties:

Required.message=is required.

类人:

public class Person {
    @Required
    private String firstName;

    @Required
    private String lastName;
}

Answer 1

约束违反约束违反..((PathImpl)constraintViolation.getPropertyPath()).getLeafNode().getName();