java 16进制与中文(字符串)互转工具类

 /**
     * 字符串转换成为16进制(无需Unicode编码)
     *
     * @param str
     * @return
     */
    private static final char[] HEX_CHAR_ARR = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            'A', 'B', 'C', 'D', 'E', 'F'};
    public static String str2HexStr(String str) {
        StringBuilder sb = new StringBuilder("");
        byte[] bs = str.getBytes();
        int bit;
        for (int i = 0; i < bs.length; i++) {
            bit = (bs[i] & 0x0f0) >> 4;
            sb.append(HEX_CHAR_ARR[bit]);
            bit = bs[i] & 0x0f;
            sb.append(HEX_CHAR_ARR[bit]);
            sb.append(" ");
        }
        return sb.toString();
    }

    /**
     * 16进制直接转换成为字符串(无需Unicode解码)
     *
     * @param hexStr
     * @return
     */
    public static String hexStr2Str(String hexStr) {
        String str = "0123456789ABCDEF";
        char[] hexs = hexStr.toCharArray();
        byte[] bytes = new byte[hexStr.length() / 2];
        int n;
        for (int i = 0; i < bytes.length; i++) {
            n = str.indexOf(hexs[2 * i]) * 16;
            n += str.indexOf(hexs[2 * i + 1]);
            bytes[i] = (byte) (n & 0xff);
        }
        return new String(bytes);
    }