使用正则表达式过滤

Question

I am having a filter for the following regular expressions我有以下正则表达式的过滤器

[^@()[]\;:,<>]+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/

I need to negate the following special charters before the @domain.com我需要在@domain.com 之前否定以下特殊章程

@()[]\;:",<

any suggestions??有什么建议么？？

Answer 1

Try escaping the ] in the character class.在字符 class 中尝试 escaping ] 。

[^@()[\]\;:,<>]+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/
      ^^

If not escaped the ] will be treated incorrectly as the end of the character class.如果没有转义]将被错误地视为字符 class 的结尾。

Since this has been tagged as Java, remember that you need to escape using \\ and not just \ .由于这已被标记为 Java，请记住您需要使用\\而不仅仅是\进行转义。