Java使用正则表达式截取重复出现的XML字符串功能示例

public static void main(String[] args) throws DocumentException {
    String s = "<MTCCommand Time=\"2014-03-22\"><Login UserId=\"admin\" UserPasswd=\"123\" /></MTCCommand><MTCCommand><Login/></MTCCommand>";
    String regEx = "<MTCCommand((?!<MTCCommand).)*</MTCCommand>";
    Pattern pat = Pattern.compile(regEx);
    Matcher mat = pat.matcher(s);
    while(mat.find()){
      System.out.println(mat.group());
    }
}

<MTCCommand Time="2014-03-22"><Login UserId="admin" UserPasswd="123" /></MTCCommand>
<MTCCommand><Login/></MTCCommand>