标准MD5加密算法:


public class Md5 {     public static String getMd5(String s) {         char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',                 'a', 'b', 'c', 'd', 'e', 'f' };          try {             byte[] strTemp = s.getBytes();             MessageDigest mdTemp = MessageDigest.getInstance("md5");             mdTemp.update(strTemp);             byte[] md = mdTemp.digest();             int j = md.length;             char str[] = new char[j * 2];             int k = 0;             for (int i = 0; i < j; i++) {                 byte byte0 = md[i];                 str[k++] = hexDigits[byte0 >>> 4 & 0xf];                 str[k++] = hexDigits[byte0 & 0xf];             }             return new String(str);         } catch (Exception e) {             return null;         }     }      /**      * 标准MD5加密      *       * @param inStr      * @return      * @throws Exception      */     public static String toMD5(String inStr) {         StringBuffer sb = new StringBuffer();         try {             MessageDigest md = MessageDigest.getInstance("MD5");             md.update(inStr.getBytes());             byte b[] = md.digest();             int i;             for (int offset = 0; offset < b.length; offset++) {                 i = b[offset];                 if (i < 0)                     i += 256;                 if (i < 16)                     sb.append("0");                 sb.append(Integer.toHexString(i));             }         } catch (Exception e) {             return null;             // e.printStackTrace();         }         return sb.toString().toUpperCase();     }      public static void main(String[] args) throws Exception {         System.out.println(toMD5("MATICSOFT").toUpperCase());         System.out.println(getMd5("MATICSOFT").toUpperCase());     } }




怀有希望!!