如何更换“ ”与“ ”在java中
我尝试将字符串分解为数组并将 \ 替换为 \\ ，但无法做到这一点，我也尝试了 String.replaceAll 类似这样的 (" \","\\");。
我想提供 JNI 的路径，它只能以这种方式读取。
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.
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不要使用
String.replaceAll在这种情况下 - 这是根据正则表达式指定的，这意味着您需要更多转义。这应该没问题：请注意，由于 Java 字符串文字中的反斜杠是双反斜杠 - 因此这里涉及的实际字符串是“单反斜杠”和“双反斜杠”-而不是双反斜杠和四重反斜杠。
< code>replace 适用于简单字符串 - 不涉及正则表达式。
Don't use
String.replaceAllin this case - that's specified in terms of regular expressions, which means you'd need even more escaping. This should be fine: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.
replaceworks on simple strings - no regexes involved.您可以使用
replaceAll：You could use
replaceAll:那是不对的。您只需要在用编程语言声明的文字字符串中使用双反斜杠。您永远不必在运行时进行此替换。你需要重新思考为什么要这样做。
That's not right. You only need double backslashes in literal strings that you declare in a programming language. You never have to do this substitution at runtime. You need to rethink why you're doing this.
处理“\”可能是一个相当冒险的事情，因为它在 Java 中被视为转义字符。您总是需要在字符串中使用“\”来表示“\”。但是当您想在正则表达式中使用“\”时，乐趣就开始了，因为“\”也是正则表达式中的转义字符。因此，对于单个“\”，您需要在正则表达式中使用“\\”。
这是我找到此信息的链接： https://www.rgagnon.com/ javadetails/java-0476.html
我必须将 '\' 转换为 '\\'。我找到了我们可以使用的地方：
并且它有效。
下面给出的是我如何实现它的图像。
https://i.sstatic.net/LVjk6.png
It can be quite an adventure to deal with the "\" since it is considered as an escape character in Java. You always need to "\" a "\" in a String. But the fun begins when you want to use a "\" in regex expression, because the "\" is an escape character in regex too. So for a single "\" you need to use "\\" in a regex expression.
here is the link where i found this information: https://www.rgagnon.com/javadetails/java-0476.html
I had to convert '\' to '\\'. I found somewhere that we can use:
and it works.
Given below is the image of how I implemented it.
https://i.sstatic.net/LVjk6.png