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

以下将替换 ASCII 控制字符([x00-x1Fx7F] 的简写):

The following will replace ASCII control characters (shorthand for [x00-x1Fx7F]):

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

以下内容将替换所有 ASCII 不可打印字符([p{Graph}x20] 的简写)，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}]", "?");

然而，两者都不适用于 Unicode 字符串.有没有人有从 unicode 字符串中删除不可打印字符的好方法?

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}", "?");

查看有关 Unicode 正则表达式的更多信息.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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