package com.chushang.common.core.util;

public final class HexByte
{
	private HexByte()
	{
		
	}
	
	/**
	 * 将二进制转换成16进制
	 * @param buf
	 * @return
	 */
	public static String parseByte2HexStr(byte[] buf)
	{
		StringBuilder sb = new StringBuilder();
		for (byte b : buf) {
			String hex = Integer.toHexString(b & 0xFF);
			if (hex.length() == 1) {
				hex = '0' + hex;
			}
			sb.append(hex.toUpperCase());
		}
		return sb.toString();
	}

	/**
	 * 将16进制转换为二进制
	 * @param hexStr
	 * @return
	 */
	public static byte[] parseHexStr2Byte(String hexStr)
	{
		if (hexStr.length() < 1)
			return null;
		byte[] result = new byte[hexStr.length() / 2];
		for (int i = 0; i < hexStr.length() / 2; i++)
		{
			int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
			int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
			result[i] = (byte) (high * 16 + low);
		}
		return result;
	}

}
