Hibernate Validator - @Length - 如何为min和max指定单独的消息？ [英] Hibernate Validator - @Length - How to specify separate message for min and max?

问题描述

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

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;

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）如下：

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;

我试过@Max和@Min，他们没有做我想做的事。任何输入都将非常感谢！

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

推荐答案

您可以指定几个 @Length 使用内部 list annotation （为Bean Validation / Hibernate Validator中的每个约束类型定义），如下所示：

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。我建议您更喜欢 @Size 由Bean Validation API在 @Length 上定义，以实现可移植性。

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

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