image: unknown format

[cospotato]

func decode(writer http.ResponseWriter, request *http.Request) {
	imgUrl := request.URL.Query().Get("url")

	resp, err := http.Get(imgUrl)
	if err != nil {
		http.Error(writer, err.Error(), http.StatusInternalServerError)
		return
	}
	defer resp.Body.Close()

	//i, _, err := image.Decode(resp.Body)
	//if err != nil {
	//	log.Fatal(err)
	//}
	//fmt.Println(i.Bounds())

	qrMatrix, err := qrcode.Decode(request.Body)
	if err != nil {
		http.Error(writer, err.Error(), http.StatusInternalServerError)
		return
	}

	writer.Write([]byte(qrMatrix.Content))
}

This return an error: image: unknown format

[skanger]

如果你的值为空，则会有这个问题
if your "url" is empty , you will get this result