使用Java将字符串转码utf-8成8进制数字

package demo0809.demo1;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class Test333 {

	public static void main(String[] args) throws UnsupportedEncodingException {
		 String str = URLEncoder.encode("中国", "UTF-8");
	       String[] s = str.substring(1).split("%");
	       StringBuffer s8 = new StringBuffer();
	       for(int i=0;i<s.length;i++){
	    	   s8.append("\\"+Integer.toOctalString(Integer.valueOf(s[i],16)));
	       }
	       System.out.println(s8.toString());
	}

}