/** * 数据类型转换工具类 * @author cyf * */public class NumConvertUtil{            /**     * bytes 转16进制字符串     * @param bArray     * @return     */    public static final String bytesToHexString(byte[] bArray) {        StringBuffer sb = new StringBuffer(bArray.length);        String sTemp;        for (int i = 0; i < bArray.length; i++) {            sTemp = Integer.toHexString(0xFF & bArray[i]);            if (sTemp.length() < 2)                sb.append(0);            sb.append(sTemp.toUpperCase());        }        return sb.toString();    }                    /**     * 16进制字符串转bytes     * @param hex     * @return     */    public static byte[] hexStringToByte(String hex) {        int len = 0;        int num=0;                //判断字符串的长度是否是两位        if(hex.length()>=2){                        //判断字符喜欢是否是偶数            len=(hex.length() / 2);            num = (hex.length() % 2);                        if (num == 1) {                hex = "0" + hex;                len=len+1;            }                    }else{                        hex = "0" + hex;            len=1;                                }                        byte[] result = new byte[len];        char[] achar = hex.toCharArray();        for (int i = 0; i < len; i++) {            int pos = i * 2;            result[i] = (byte) (toByte(achar[pos]) << 4 | toByte(achar[pos + 1]));        }        return result;                            }            private static int toByte(char c) {                         if (c >= 'a')                return (c - 'a' + 10) & 0x0f;            if (c >= 'A')                return (c - 'A' + 10) & 0x0f;            return (c - '0') & 0x0f;                }            /**     * 16进制字符串转十进制int     * @param HexString     * @return     */    public static int HexStringToInt(String HexString) {        int inJTFingerLockAddress = Integer.valueOf(HexString, 16);                return inJTFingerLockAddress;    }                    /**     * 十进制int转16进制字符串     * @param HexString     * @return     */    public static String IntToHexString(int num) {        String hexString = Integer.toHexString(num);                return hexString;    }            /**     * 16进制String转BCD     * @param asc     * @return     */    public static byte[] strToBcd(String asc) {          int len = asc.length();          int mod = len % 2;               if (mod != 0) {           asc = "0" + asc;           len = asc.length();          }               byte abt[] = new byte[len];          if (len >= 2) {           len = len / 2;          }               byte bbt[] = new byte[len];          abt = asc.getBytes();          int j, k;               for (int p = 0; p < asc.length()/2; p++) {           if ( (abt[2 * p] >= '0') && (abt[2 * p] <= '9')) {            j = abt[2 * p] - '0';           } else if ( (abt[2 * p] >= 'a') && (abt[2 * p] <= 'z')) {            j = abt[2 * p] - 'a' + 0x0a;           } else {            j = abt[2 * p] - 'A' + 0x0a;           }                if ( (abt[2 * p + 1] >= '0') && (abt[2 * p + 1] <= '9')) {            k = abt[2 * p + 1] - '0';           } else if ( (abt[2 * p + 1] >= 'a') && (abt[2 * p + 1] <= 'z')) {            k = abt[2 * p + 1] - 'a' + 0x0a;           }else {            k = abt[2 * p + 1] - 'A' + 0x0a;           }                int a = (j << 4) + k;           byte b = (byte) a;           bbt[p] = b;          }          return bbt;      }              /**     * String 类型数字转化为Double  保留置顶小数位(用于显示金额等。)     * @param money     * @param type  保留小数点位数  #.00保留两位  #.0保留一位  #保留整数     * @return     */    public static String strToDouble(String money,String type){                 String toDouble= new DecimalFormat(type).format(Double.parseDouble(money));                  return toDouble;            }                }

十六进制字符串高低位转换（“dc45fd45”转化成“45fd45dc”）

private static String lockAddress(String lockAddress) {						StringBuffer s1 = new StringBuffer(lockAddress);			int index;			for (index = 2; index < s1.length(); index += 3) {				s1.insert(index, ',');			}			String[] array = s1.toString().split(",");			String[] swapOrder = swapOrder(array);			StringBuffer s2 = new StringBuffer();			for (String string :swapOrder ) {				s2.append(string);		}		    return s2.toString();					}						 public static String[] swapOrder(String[] arr){ 			 int length = arr.length;			 for(int i=0;i

 

 

记录备忘，以后会补充，有错误请大神指正。