java 正则表达式阻止某些特殊字符
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Regex to block certain special characters
提问by ukanth
I'm currently stuck at completing the following regex.
我目前坚持完成以下正则表达式。
My Regex
我的正则表达式
^[a-zA-Z0-9.][a-zA-Z0-9.+:_-]+[a-zA-Z0-9.]$
and the matching structure is Sample:Te.st4:Test.Sampleeach name is separated with :But I want to allow the each name to have any special characters other than the following ones.
并且匹配的结构是 Sample:Te.st4:Test.Sample每个名称都用 分隔:但是我希望每个名称都可以包含除以下字符以外的任何特殊字符。
> # *
I don't know how to write that regex. Please help me to resolve this.
我不知道如何编写该正则表达式。请帮我解决这个问题。
回答by JoeG
The regex "^[^>#*]+$"will match any input apart from something containing >, #or *.
"^[^>#*]+$"除了包含>,#或 的内容外，正则表达式将匹配任何输入*。
From your existing regex it looks like you don't want to allow :to be the first or last character, in which case the regex you want is this:
从您现有的正则表达式看来，您不希望:成为第一个或最后一个字符，在这种情况下，您想要的正则表达式是：
"^[^:>#*]+|([^:>#*][^>#*]+[^:>#*])$"
"^[^:>#*]+|([^:>#*][^>#*]+[^:>#*])$"
