如何在Java中使用正则表达式删除字符串中的反斜杠？
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How to remove the backslash in string using regex in Java?
提问by zahir hussain
How to remove the backslash in string using regex in Java?
如何在Java中使用正则表达式删除字符串中的反斜杠？
For example:
例如：
hai how are\ you?
I want only:
我只想：
hai how are you?
采纳答案by Alan Moore
str = str.replaceAll("\\", "");
or
或者
str = str.replace("\", "");
replaceAll()treats the first argument as a regex, so you have to double escape the backslash. replace()treats it as a literal string, so you only have to escape it once.
replaceAll()将第一个参数视为正则表达式，因此您必须对反斜杠进行双重转义。 replace()将其视为文字字符串，因此您只需将其转义一次。
回答by Mark Elliot
You can simply use String.replaceAll()
您可以简单地使用String.replaceAll()
String foo = "hai how are\ you?";
String bar = foo.replaceAll("\\", "");
回答by Abhiram
String foo = "hai how are\ you?"; String bar = foo.replaceAll("\\", ""); Doesnt work java.util.regex.PatternSyntaxException occurs.... Find out the reason!! @Alan has already answered.. good
String foo = "你好吗\你？"; String bar = foo.replaceAll("\\", ""); 不工作 java.util.regex.PatternSyntaxException 发生....找出原因！@Alan 已经回答了.. 好
String bar = foo.replace("\\", ""); Does work
String bar = foo.replace("\\", ""); 有效
