如何更换“ \“用“ \\在java中 [英] How to replace " \ " with " \\ " in java

问题描述

我试图将字符串分解为数组，并将 \ 替换为 \\ ，但不能做到了，我也试过String.replaceAll这样的东西（\，\\）; 。我想提供一个JNI路径，它只能以这种方式读取。请有人帮我这个。谢谢。

I tried to break the string into arrays and replace \ with \\ , but couldn't do it, also I tried String.replaceAll something like this ("\","\\");. I want to supply a path to JNI and it reads only in this way. Can someone help me on this please. Thank you.

推荐答案

不要使用 String.replaceAll case - 用正则表达式指定，这意味着你需要更多的转义。这应该没问题：

Don't use String.replaceAll in this case - that's specified in terms of regular expressions, which means you'd need even more escaping. This should be fine:

String escaped = original.replace("\\", "\\\\");

请注意，由于使用了Java字符串文字，反斜杠加倍 - 所以实际这里涉及的字符串是单反斜杠和双反斜杠 - 不是双重和四重。

Note that the backslashes are doubled due to being in Java string literals - so the actual strings involved here are "single backslash" and "double backslash" - not double and quadruple.

替换 适用于简单字符串 - 不涉及正则表达式。

replace works on simple strings - no regexes involved.

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