golang md5 结果类型

golang  md5 结果类型

   package main

   import (
           "crypto/md5"
           "encoding/hex"
           "fmt"
   )

   func main() {
          data := []byte("testing")
          b := md5.Sum(data)
          fmt.Println(string(b)) //错误，不能直接转 string
 13 //      fmt.Println(hex.EncodeToString(b[:]))
 14 //      fmt.Println(b[:])
  }

# command-line-arguments
GoProjcet/src/exercise/test_md5.go:: cannot convert b (type []byte) to type string

Note:

Also note that converting a "random" slice of bytes to a string is most likely not what you want because a "random" slice of bytes may not be a valid UTF-8 byte sequence.

Instead use the encoding/hex package to convert the result to a hex string like this:

fmt.Println(hex.EncodeToString(b[:]))

   package main

   import (
           "crypto/md5"
           "encoding/hex"
           "fmt"
   )

   func main() {
          data := []byte("testing")
          b := md5.Sum(data)
  //      fmt.Println(string(b))
          fmt.Println(hex.EncodeToString(b[:]))
          fmt.Println(b[:])
  }

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