doulu7174
2017-10-10 14:51
浏览 308
已采纳

Golang将base64数据解码为字符串

I am trying to decode a simple base64 encoded string in golang.

package main
import b64 "encoding/base64"
import fmt

func main() {
    data := "YmFzZTY0IGVuY29kZWQgc3RyaW5n"
    sDec, err1 := b64.StdEncoding.DecodeString(data)
    fmt.Println(sDec)
    fmt.Println(err1)
}

And the output I get is

[98 97 115 101 54 52 32 101 110 99 111 100 101 100 32 115 116 114 105 110 103] // this is the decoded data.
<nil>

Where as https://www.base64decode.net/ decodes and outputs as

base64 encoded string

How do I get the same result in golang?

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1条回答 默认 最新

  • dpecb06062 2017-10-10 14:53
    已采纳

    StdEncoding.DecodeString(data) (which is base64.Encoding.DecodeString()) returns you the decoded data as byte slice ([]byte), and this is what you see printed: the decimal representation of the individal bytes.

    Convert the byte slice to string if you want to see it as a string value:

    fmt.Println(string(sDec))
    

    Or use a format string where you specify you want to print is as a string:

    fmt.Printf("%s
    ", sDec)
    

    Then the output will be (try it on the Go Playground):

    base64 encoded string
    
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