java - 检查字符串是否包含主题标签词

Question

如何有效检查输入字符串是否包含 hashtag 单词并获取它？

实例:

String input = "My name is #George and I like #Java."
String[] hashTag = getHashTag(input);
Results are: #George, #Java

感谢您的回复。

Answer 1

尝试使用这个:

  String input = "My name is #George and I like #Java.";
             Pattern patt = Pattern.compile("(#\\w+)\\b");
             Matcher match = patt.matcher(input);
             List<String> matStr =new ArrayList<String>();
             while (match.find()) {
                 matStr.add(match.group(1));
            }
                 System.out.println("Results are: "+matStr.get(0)+" , " +matStr.get(1));

输出:

Results are: #George , #Java