1 // convert normal string to hex bytes string

     2 def string2hex(str: String): String = {

     3   str.toList.map(_.toInt.toHexString).mkString

     4 }

     5     

     6 // convert hex bytes string to normal string

     7 

     8 

     9 val byteArray: Array[Byte] = List.range(1, 255).map(_.toByte).toArray

    10 val bos = new BufferedOutputStream(new FileOutputStream("test.txt"))

    11 bos.write(byteArray)

    12 bos.close() 

    13 

    14 

    15 def string2int(hex: String) = {

    16   hex.sliding(2, 2).map(Integer.parseInt(_, 16)).toArray

    17 }

    18 

    19 def test(l: List[Int]) = {

    20   l.map(_.toChar).mkString

    21 }

    22 

    23 

    24 import java.io._

    25 val writer = new PrintWriter(new File("test.txt" ))

    26 

    27 //writer.write(string2int("cafebabe"))

    28 writer.write(test(List.range(1, 255)))

    29 writer.close()

    30 

    31 import scalax.io._

    32 import scalax.io.Resource

    33 

    34 FileOutputStream fos = new FileOutputStream("test");

    35 fos.write(bytesArray);

    36 fos.close();

    37 

    38 

    39 string2int("cafebabe")

    40 

    41 202.toHexString

    42 

    43 "cafebabe".sliding(1, 1).toList.map(Integer.parseInt(_, 16)).map(_.toByte).map(_.toChar)

    44 

    45 hex2string("ca")

    46 string2hex("ca")

    47 hex2string("cafebabe")

    48 

    49     

    50 val appkey = "9GLV//lv/kYFW2o3/bihxwnMcmo="

    51         

    52         // string to hex

    53         val appkey_hex = string2hex(appkey)

    54         // 39474c562f2f6c762f6b594657326f332f62696878776e4d636d6f3d

    55         println(appkey_hex)

    56         

    57         // hex to string

    58         val appkey_string_again = hex2string(appkey_hex)

    59         // 9GLV//lv/kYFW2o3/bihxwnMcmo=

    60         println(appkey_string_again)

    61     }

    62 

    63 

    64 List("ca", "fe", "ba", "be").map(_.toByte)

    65 

    66 "ca".toByte

    67 

    68