如何在Java中替换不可打印的Unicode字符？ [英] How can I replace non-printable Unicode characters in Java?

问题描述

以下内容将取代ASCII控制字符（ [\ x00-\x1F \ x7F] 的简写）：

The following will replace ASCII control characters (shorthand for [\x00-\x1F\x7F]):

my_string.replaceAll("\\p{Cntrl}", "?");

以下内容将替换所有ASCII不可打印字符（ [\\的简写] \\ p {Graph} \ x20] ），包括重音字符：

The following will replace all ASCII non-printable characters (shorthand for [\p{Graph}\x20]), including accented characters:

my_string.replaceAll("[^\\p{Print}]", "?");

但是，它们都不适用于Unicode字符串。有没有人有一个很好的方法从unicode字符串中删除不可打印的字符？

However, neither works for Unicode strings. Does anyone has a good way to remove non-printable characters from a unicode string?

推荐答案

my_string.replaceAll("\\p{C}", "?");

查看更多关于 Unicode正则表达式。 java.util.regexPattern / String.replaceAll 支持它们。

See more about Unicode regex. java.util.regexPattern/String.replaceAll supports them.

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