如何从字符串中删除无效字符？ [英] How to remove invalid characters from a string?

问题描述

我不知道如何从Java中的字符串中删除无效字符。我正在尝试删除所有不是数字，字母或（）[]的字符。我该怎么做？

I have no idea how to remove invalid characters from a string in Java. I'm trying to remove all the characters that are not numbers, letters, or ( ) [ ] . How can I do this?

谢谢

推荐答案

String foo = "this is a thing with & in it";
foo = foo.replaceAll("[^A-Za-z0-9()\\[\\]]", "");

Javadocs是你的朋友。正则表达式也是你的朋友。

Javadocs are your friend. Regular expressions are also your friend.

编辑：

这就是siad，这只适用于拉丁字母;你可以相应调整。 \\\\ 可用于 a-zA-Z 表示单词字符，如果有效对于你的情况，虽然它包括 _ 。

That being siad, this is only for the Latin alphabet; you can adjust accordingly. \\w can be used for a-zA-Z to denote a "word" character if that works for your case though it includes _.

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