golang md5 結果類型

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golang  md5 結果類型

 

  1 package main  2  3 import (  4         "crypto/md5"  5         "encoding/hex"  6         "fmt"  7 )  8  9 func main() { 10         data := []byte("testing") 11         b := md5.Sum(data) 12         fmt.Println(string(b)) //錯誤，不能直接轉 string  13 //      fmt.Println(hex.EncodeToString(b[:])) 14 //      fmt.Println(b[:]) 15 }

# command-line-argumentsGoProjcet/src/exercise/test_md5.go:12: cannot convert b (type [16]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[:]))

  1 package main  2  3 import (  4         "crypto/md5"  5         "encoding/hex"  6         "fmt"  7 )  8  9 func main() { 10         data := []byte("testing") 11         b := md5.Sum(data) 12 //      fmt.Println(string(b)) 13         fmt.Println(hex.EncodeToString(b[:])) 14         fmt.Println(b[:]) 15 }

ae2b1fca515949e5d54fb22b8ed95575[174 43 31 202 81 89 73 229 213 79 178 43 142 217 85 117]