java jquery 过滤html标签获取纯文本字符串长度

jquery：

if(schema.maxLength) {

        var pattern =new RegExp("<([^>]*)>");
      
          while(pattern.test(value)){     //value为带有html标签的字符串
              value=value.replace(pattern, '');

          }

}

java

public static void main(String[] args) {
        String s="<strong><em><u><span style=\"font-family: SimSun; font-size: 24px;\">1234512345123451</span></u></em></strong>";
        String regxpForHtml="<([^>]*)>";
         Pattern pattern = Pattern.compile(regxpForHtml);   
            Matcher matcher = pattern.matcher(s);   
            StringBuffer sb = new StringBuffer();   
            boolean result1 = matcher.find();   
            while (result1) {   
                matcher.appendReplacement(sb, "");   
                result1 = matcher.find();   
            }   
            matcher.appendTail(sb);   
            System.out.println(sb.toString());


    }