Question

java 这句正则哪错了，Pattern pattern = Pattern.compile("[\x00-\xff]");

报错：Exception in thread "main" java.lang.Error: Unresolved compilation problem:
Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\ )

Answer 1

反斜芦戚杠需要转义\在java字符串中要稿纤用\\表示
Pattern pattern = Pattern.compile("键哗仿[\\x00-\\xff]");

Answer 2

你要匹配什么？
十六进制的字符串？\xYY这种格式？