java - 如何使用java中的Pattern删除字符串中的@

Question

我需要删除以@开头的字符串的一部分。

我的示例代码适用于一个字符串，但适用于另一个字符串则失败。

失败一:无法删除@news4buffalo:

String regex = "\\@\\w+ || @\\w*";
String rawContent =  "RT @news4buffalo: Police say a shooter fired into a crowd    yesterday on the Oakmont overpass, striking and killing a 14-year-old. More: http…";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(rawContent);
if (matcher.find()) {
    rawContent = rawContent.replaceAll(regex, "");
} 

成功一:

String regex = "\\@\\w+ || @\\w*";
String rawContent =  "@ZaslowShow couldn't agree more. Good crowd last night. #LetsGoFish";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(rawContent);
if (matcher.find()) {
    rawContent = rawContent.replaceAll(regex, "");
} 

输出:

couldn't agree more. Good crowd last night. #LetsGoFish

Answer 1

从您的问题看来，这个正则表达式可以为您工作:

rawContent = rawContent.replaceAll("@\\S*", "");