Hibernate Validator - @Length - 如何为最小值和最大值指定单独的消息？

发布于 2024-11-30 01:57:25 字数 574 浏览 1 评论 0原文

我在我的网络应用程序中使用 Hibernate 验证器进行表单验证。我对 String 属性使用 @Length() 注释，如下所示。

@Length(min = 5, message = "The field must be at least 5 characters")
private String myString;

但是，如果字符串超过 50 个字符，我需要显示不同的消息。有没有办法使用开箱即用的@Length验证器来做到这一点？我想做的一个例子（编译器不会让我这样做）如下：

@Length(min = 5, message = "The field must be at least 5 characters")
@Length(max = 50, message = "The field must be less than 50 characters")
private String myString;

我已经尝试过@Max和@Min，但它们没有做我想做的事。任何意见将不胜感激！

原文

I am using Hibernate validator for form validation in my web-app. I am using the @Length() annotation for my String attribute as follows

@Length(min = 5, message = "The field must be at least 5 characters")
private String myString;

However, I have a need to display a different message if the String exceeds 50 characters. Is there a way to use the out-of-the-box @Length validator to do this? An example of what I would like to do (compiler will not let me) is as follows:

@Length(min = 5, message = "The field must be at least 5 characters")
@Length(max = 50, message = "The field must be less than 50 characters")
private String myString;

I have tried @Max and @Min and they do not do what I want. Any input would be greatly appreciated!

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七七 2024-12-07 01:57:25

您可以使用内部列表注释（为 Bean Validation/Hibernate Validator 中的每个约束类型定义），如下所示：

@List({
    @Length(min = 5, message = "The field must be at least 5 characters"),
    @Length(max = 50, message = "The field must be less than 50 characters")
})
private String myString;

顺便说一句。我建议更喜欢 @Size< /a> 由 Bean Validation API 出于可移植性原因通过 @Length 定义。

You can specify several @Length constraints at one element by using the inner list annotation (which is defined for each constraint type in Bean Validation/Hibernate Validator) like this:

@List({
    @Length(min = 5, message = "The field must be at least 5 characters"),
    @Length(max = 50, message = "The field must be less than 50 characters")
})
private String myString;

Btw. I recommend to prefer @Size as defined by the Bean Validation API over @Length for portability reasons.

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转身泪倾城 2024-12-07 01:57:25

如果您使用 java 标准 javax.validation.constraint.Size，则可以通过以下方式实现相同的效果：

@Size.List ({
    @Size(min=8, message="The field must be at least {min} characters"),
    @Size(max=60, message="The field must be less than {max} characters")
})
private String myString;

请注意，您可以通过使用消息插值来避免对字段大小进行硬编码。

If you use the java standard javax.validation.constraint.Size, you can achieve the same thing this way:

@Size.List ({
    @Size(min=8, message="The field must be at least {min} characters"),
    @Size(max=60, message="The field must be less than {max} characters")
})
private String myString;

Notice that you can avoid hardcoding the field size by using message interpolation.

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