Hibernate 验证器:@Email 接受 ask@stackoverflow 作为有效吗? [英] Hibernate validator: @Email accepts ask@stackoverflow as valid?

问题描述

我正在使用 @Email 批注来验证电子邮件地址.我遇到的问题是它接受像 ask@stackoverflow 这样的东西作为有效的电子邮件地址.我猜这是因为他们想要支持 Intranet 地址，但我似乎找不到标志，因此它确实检查了扩展名.

I'm using the @Email annotation to validate an e-mail address. The issue I'm having is that it's accepting things like ask@stackoverflow as a valid e-mail address. I guess this is because they want to support intranet addresses, but I can't seem to find a flag so it does check for an extension.

我真的需要切换到 @Pattern(以及任何关于灵活的电子邮件模式的建议)还是我遗漏了什么?

Do I really need to switch to @Pattern (and any recommendations for an e-mail pattern that's flexible) or am I missing something?

推荐答案

实际上，@Email 来自 Hibernate Validator 在内部使用正则表达式.您可以根据该正则表达式轻松定义自己的约束，并根据需要进行修改(注意 DOMAIN 末尾的 +):

Actually, @Email from Hibernate Validator uses regexp internally. You can easily define your own constraint based on that regexp, modified as you need (note the + at the end of DOMAIN):

@Target({ElementType.FIELD, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = {})
@Pattern(regexp = Constants.PATTERN, flags = Pattern.Flag.CASE_INSENSITIVE)
public @interface EmailWithTld {
    String message() default "Wrong email";
    Class<?>[] groups() default { };
    Class<? extends Payload>[] payload() default { };
}

interface Constants {
    static final String ATOM = "[a-z0-9!#$%&'*+/=?^_`{|}~-]";
    static final String DOMAIN = "(" + ATOM + "+(\." + ATOM + "+)+";
    static final String IP_DOMAIN = "\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\]";

    static final String PATTERN =
            "^" + ATOM + "+(\." + ATOM + "+)*@"
                    + DOMAIN
                    + "|"
                    + IP_DOMAIN
                    + ")$";
}

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