关于字符的编码和解码

 

String data = "中国";
		//将字符编码
		String en = URLEncoder.encode(data,"utf-8");
		//将字符解码
		String da = URLDecoder.decode(en, "utf-8");
		
		System.out.println("en::"+en);
		System.out.println("da::"+da);
	
		//将字符转换成字节码
		byte[] bs = data.getBytes();
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < bs.length; i++) {
			sb.append(bs[i]).append(",");
		}
		sb.deleteCharAt(sb.lastIndexOf(","));
		System.out.println(sb);
		
		//将字节码转换成字符
		String[] str = sb.toString().split(",");
		byte[] bb = new byte[str.length];
		for (int i = 0; i < str.length; i++) {
			bb[i] = new Byte(str[i]);
		}
		System.out.println(new String(bb));