/**     * 十六进制高低位转换，返回十进制数     * @param str     * @return     */    public static String decodeHexStringToDec(String str) {        str =HighLowHex(spaceHex(str));        String value =new BigInteger(str, 16).toString();        return value;    }        /**     * 十六进制数隔空位     * @param str     * @return     */    private static String spaceHex(String str){        char[] array= str.toCharArray();            if(str.length()<=2) return str;                StringBuffer buffer =new StringBuffer();                for(int i=0;i
     
       list = Arrays.asList( str.split(" "));        Collections.reverse(list);        StringBuffer stringBuffer = new StringBuffer();        for(String string:list){            stringBuffer.append(string);        }        return stringBuffer.toString();    }