def MD5(input: String): String = {
    var md5: MessageDigest = null
    try {
      md5 = MessageDigest.getInstance("MD5")
    }
    catch {
      case e: Exception => {
        e.printStackTrace
        println(e.getMessage)
      }
    }
    val byteArray: Array[Byte] = input.getBytes
    val md5Bytes: Array[Byte] = md5.digest(byteArray)
    var hexValue: String = ""
    var i: Integer = 0
    for ( i <- 0 to md5Bytes.length-1) {
        val str: Int = (md5Bytes(i).toInt) & 0xff
        println("str"+str)
        if (str < 16) {
          hexValue=hexValue+"0"
        }
        hexValue=hexValue+(Integer.toHexString(str))
    }
  return hexValue.toString
}

def main(args: Array[String]) {
  //println(MD5("nihao1"))
}