Hibernate Validator - 比较两个日期 - Class-级别约束

Question

所以我必须比较提到的两个日期，并且我编写了一个验证器，它似乎有一些错误并且有点奇怪：注解class : 这里导入了@Target注解，但是里面的枚举无法识别

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import javax.validation.Constraint;
import javax.validation.Payload;

@Target({ TYPE, ANNOTATION_TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = { ValidAfterDateValidator.class })
@Documented
public @interface ValidAfterDate {


String message() default "The End date should be after the starting date." ;

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

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

ValidAfterDateValidator.class :

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import gestionprojet.java.entities.Project;

public class ValidAfterDateValidator implements ConstraintValidator<ValidAfterDate, Project> {

@Override
public void initialize(ValidAfterDate constraintAnnotation) {
}

@Override
public boolean isValid(Project projet, ConstraintValidatorContext context) {
    if (projet == null) {
        return true;
    }

    return projet.getDate_Debut().compareTo(projet.getDate_Fin()) > 0;
}

这里不允许使用@ValidAferDate :

Project.class :

@ValidAfterDate
public class Project {

 @Future
 @DateTimeFormat(pattern="dd/MM/YY")
 private Date date_Debut;

 @Future
 @DateTimeFormat(pattern="dd/MM/YY")
 private Date date_Fin;
 //Getters & Setters
 }

如有任何帮助，我们将不胜感激。谢谢

Answer 1

这个：

@Target( { TYPE , ANNOTATION_TYPE })

需要更改为：

@Target( {ElementType.ANNOTATION_TYPE, ElementType.TYPE })

进口是：

import java.lang.annotation.ElementType;

Hibernate Validator - 比较两个日期 - Class-级别约束

Hibernate Validator - Compare two Dates - Class-Level constraint

spring

annotations

hibernate

spring-mvc

hibernate-validator