Java：从文本文件字符串中替换“[”“]”
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Java: replace "[" "]" from text files strings
提问by aneuryzm
I'm using
我正在使用
str.replaceAll("GeoData[", "");
to replace "[" symbol in some strings in my text file, but I get:
替换文本文件中某些字符串中的“[”符号，但我得到：
Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 7
GeoData[
^
at java.util.regex.Pattern.error(Pattern.java:1713)
how can I solve this ?
我该如何解决这个问题？
回答by Mark Byers
The method replaceAllinterprets the argument as a regular expression. In a regular expression you must escape [if you want its literal meaning otherwise it is interpreted as the start of a character class.
该方法replaceAll将参数解释为正则表达式。在正则表达式中，[如果你想要它的字面意义，你必须转义，否则它被解释为字符类的开始。
str = str.replaceAll("GeoData\[", "");
If you didn't intend to use a regular expression then use replaceinstead, as Bozho mentions in his answer.
如果您不打算使用正则表达式，请replace改用，正如 Bozho 在他的回答中提到的那样。
回答by Bozho
Use the non-regex method String.replace(..): str.replace("GeoData[", "")
使用非正则表达式方法String.replace(..)：str.replace("GeoData[", "")
(People tend to miss this method, because it takes a CharSequenceas an argument, rather than a String. But Stringimplements CharSequence)
（人们往往会错过这个方法，因为它接受 aCharSequence作为参数，而不是 a String。但String实现了CharSequence）
