java中特殊字符的正则表达式 [英] Regex for special characters in java
问题描述
public static final String specialChars1= "\\W\\S";
String str2 = str1.replaceAll(specialChars1, "").replace(" ", "+");
public static final String specialChars2 = "`~!@#$%^&*()_+[]\\;\',./{}|:\"<>?";
String str2 = str1.replaceAll(specialChars2, "").replace(" ", "+");
无论 str1
是什么,我都希望删除除字母和数字以外的所有字符,并用加号 (+
) 替换空格.
Whatever str1
is I want all the characters other than letters and numbers to be removed, and spaces to be replaced by a plus sign (+
).
我的问题是,如果我使用 specialChar1
,它不会删除一些字符,如 ;
、'
、"
,如果我使用 specialChar2
它会给我一个错误:
My problem is if I use specialChar1
, it does not remove some characters like ;
, '
, "
, and if I am use specialChar2
it gives me an error :
java.util.regex.PatternSyntaxException: Syntax error U_REGEX_MISSING_CLOSE_BRACKET near index 32:
这是如何实现的?.我已经搜索过,但找不到完美的解决方案.
How can this be to achieved?. I have searched but could not find a perfect solution.
推荐答案
这对我有用:
String result = str.replaceAll("[^\\dA-Za-z ]", "").replaceAll("\\s+", "+");
对于这个输入字符串:
/-+!@#$%^&())";:[]{}\ |wetyk 678dfgh
/-+!@#$%^&())";:[]{}\ |wetyk 678dfgh
结果如下:
+wetyk+678dfgh
+wetyk+678dfgh
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