代码实现native2assci

 public static void main(String[] args) {

         String unicode = "";

         String s="用户名";

         char[] charAry = new char[s.length()];

         for(int i=; i<charAry.length; i++) {

           charAry[i] = (char)s.charAt(i);

            unicode+="\\u" + Integer.toString(charAry[i], );

         }

         System.out.println(unicode);

     }