Golang : Convert(cast) []byte to io.Reader type



Tags : golang convert cast byte io-reader

Problem :

Need to convert XML data from http.Get() to io.Reader type for xml.NewDecoder() function to work . How to do that ?

Solution :

Use strings.NewReader() function to convert the []byte type to io.Reader type.

For example :

  domainName := "socketloop.com"
  resp, err := http.Get("http://data.alexa.com/data?cli=10&url=" + domainName)

  if err != nil {
 fmt.Println(err)
 os.Exit(1)
  }

  defer resp.Body.Close()

  alexaData, err := ioutil.ReadAll(resp.Body)

  if err != nil {
 fmt.Println(err)
 os.Exit(1)
  }

  // convert []byte to type io.Reader with strings.NewReader()
  decoder := xml.NewDecoder(strings.NewReader(string(alexaData)))

Reference :

https://www.socketloop.com/references/golang-encoding-xml-decoder-rawtoken-example



Tags : golang convert cast byte io-reader

By Adam Ng

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