java md5加密

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/***      * MD5加码 生成32位md5码      */      public static String String2MD5(String inStr){          MessageDigest md5 = null;          try{              md5 = MessageDigest.getInstance("MD5");          }catch (Exception e){              System.out.println(e.toString());              e.printStackTrace();              return "";          }          char[] charArray = inStr.toCharArray();          byte[] byteArray = new byte[charArray.length];            for (int i = 0; i < charArray.length; i++)              byteArray[i] = (byte) charArray[i];          byte[] md5Bytes = md5.digest(byteArray);          StringBuffer hexValue = new StringBuffer();          for (int i = 0; i < md5Bytes.length; i++){              int val = ((int) md5Bytes[i]) & 0xff;              if (val < 16)                  hexValue.append("0");              hexValue.append(Integer.toHexString(val));          }          return hexValue.toString();      }

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