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切割字符串错误:Unclosed character class near index 0 [ ^ 转义符问题
时间 2020-01-14
标签
切割
字符串
错误
unclosed
character
class
index
转义
问题
Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^
出现此错误应该是字符转义出现问题:
java
System.out.println(str.replaceAll("[", "22"));
解决方案:在[以前加上\\
System.out.println(str.replaceAll("\\[", "22"));