package Method;
/**Ö÷Òª°üº¬Ê®Áù½øÖÆ×Ö·û´®×ªASCII£¬ASCIIתʮÁù½øÖÆ×Ö·û´®ÒÔ¼°Ê®Áù½øÖÆ×Ö·û´®×ªByteÊý×éµÈ·½·¨*/
public class HexConvert {

	public static String  convertStringToHex(String str){

		char[] chars = str.toCharArray();

		StringBuffer hex = new StringBuffer();
		for(int i = 0; i < chars.length; i++){
			hex.append(Integer.toHexString((int)chars[i]));
		}

		return hex.toString();
	}

	public static String convertHexToString(String hex){

		StringBuilder sb = new StringBuilder();
		StringBuilder sb2 = new StringBuilder();

		for( int i=0; i<hex.length()-1; i+=2 ){

			String s = hex.substring(i, (i + 2));
			int decimal = Integer.parseInt(s, 16);
			sb.append((char)decimal);
			sb2.append(decimal);
		}

		return sb.toString();
	}
	
	/**½«16½øÖÆ×Ö·û´®×ªÎªbyteÊý×é*/
	public static byte[] hexStringToBytes(String hexString) {
		if (hexString == null || hexString.equals("")) {
			return null;
		}
		// toUpperCase½«×Ö·û´®ÖеÄËùÓÐ×Ö·ûת»»Îª´óд
		hexString = hexString.toUpperCase();
		int length = hexString.length() / 2;
		// toCharArray½«´Ë×Ö·û´®×ª»»ÎªÒ»¸öеÄ×Ö·ûÊý×é¡£
		char[] hexChars = hexString.toCharArray();
		byte[] d = new byte[length];
		for (int i = 0; i < length; i++) {
			int pos = i * 2;
			d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
		}
		return d;
	}
	//·µ»ØÆ¥Åä×Ö·û
	private static byte charToByte(char c) {
		return (byte) "0123456789ABCDEF".indexOf(c);
	}

	//½«×Ö½ÚÊý×éת»»ÎªshortÀàÐÍ£¬¼´Í³¼Æ×Ö·û´®³¤¶È
	public static short bytes2Short2(byte[] b) {
		short i = (short) (((b[1] & 0xff) << 8) | b[0] & 0xff);
		return i;
	}
	
	/**½«×Ö½ÚÊý×éת»»Îª16½øÖÆ×Ö·û´®*/
	public static String BinaryToHexString(byte[] bytes) {
		String hexStr = "0123456789ABCDEF";
		String result = "";
		String hex = "";
		for (byte b : bytes) {
			hex = String.valueOf(hexStr.charAt((b & 0xF0) >> 4));
			hex += String.valueOf(hexStr.charAt(b & 0x0F));
			result += hex + " ";
		}
		return result;
	}
	
	/**½«×Ö½ÚÊý×éת»»Îª16½øÖÆ×Ö·û´®ÎÞ¿Õ¸ñ*/
	public static String BinaryToHexString2(byte[] bytes) {
		String hexStr = "0123456789ABCDEF";
		String result = "";
		String hex = "";
		for (byte b : bytes) {
			hex = String.valueOf(hexStr.charAt((b & 0xF0) >> 4));
			hex += String.valueOf(hexStr.charAt(b & 0x0F));
			result += hex + "";
		}
		return result;
	}


}