java - 是否有 HTML5 输入电子邮件验证的 Java 实现？

Question

我想使用新的 <input type="email" />元素。我想要 Java 代码在服务器上实现与在浏览器中发生的验证相同的验证。

The HTML5 spec defines email addresses在 ABNF作为:

1*( atext / "." ) "@" ldh-str *( "." ldh-str )

where :

<ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>

<let-dig-hyp> ::= <let-dig> | "-"

<let-dig> ::= <letter> | <digit>

<letter> ::= any one of the 52 alphabetic characters A through Z in upper case and a through z in lower case

<digit> ::= any one of the ten digits 0 through 9

and :

atext           =   ALPHA / DIGIT /    ; Printable US-ASCII
                       "!" / "#" /        ;  characters not including
                       "$" / "%" /        ;  specials.  Used for atoms.
                       "&" / "'" /
                       "*" / "+" /
                       "-" / "/" /
                       "=" / "?" /
                       "^" / "_" /
                       "`" / "{" /
                       "|" / "}" /
                       "~"

这些规则不与RFC 5322中的规则相同.我如何在 Java 中测试地址是否符合这些规则？

谢谢!

Answer 1

您可以使用正则表达式:

[A-Za-z0-9!#$%&'*+-/=?^_`{|}~]+@[A-Za-z0-9-]+(.[A-Za-z0-9-]+)*