I am getting the image as base64 string ( dataurl ) , Below is my function that converts the dataurl into the image,
Now if images is png than png library will create the image and jpg library will throw error and vise versa.
Problem is when i upload png it works well but when i upload jpg file
returns this error
invalid JPEG format: missing SOI marker
func (ProfileController) SetProfilePic(w http.ResponseWriter, r *http.Request) {
session, _ := session.UserSession.Get(r, "mvc-user-session")
var fieldMapForBasic map[string]*json.RawMessage
var f *os.File
data, _ := ioutil.ReadAll(r.Body)
json.Unmarshal(data, &fieldMapForBasic)
image, _ := json.Marshal(fieldMapForBasic["image"])
coI := strings.Index(string(image), ",")
rawImage := string(image)[coI+1:]
// Encoded Image DataUrl //
unbased, _ := base64.StdEncoding.DecodeString(string(rawImage))
res := bytes.NewReader(unbased)
path , _ := os.Getwd()
// Path to store the image //
newpath := filepath.Join( path + "/storage", strconv.Itoa(session.Values["id"].(int) ))
os.MkdirAll(newpath, os.ModePerm)
uid := uuid.NewV4()
fmt.Println(newpath)
// if image is png this function will create the image from dataurl string//
pngI, errPng := png.Decode(res)
if errPng == nil {
f, _ = os.OpenFile(newpath + "/" + uid.String() + ".png", os.O_WRONLY | os.O_CREATE, 0777)
png.Encode(f, pngI)
fmt.Println("Png generated")
user := model.User{}
user.ProfilePic = "storage/"+ strconv.Itoa(session.Values["id"].(int) ) + "/" + uid.String()
session.Values["profile_pic"] = user.ProfilePic
session.Save(r,w)
database.Connection.Id(session.Values["id"].(int)).Update(&user)
}else{
fmt.Println(errPng.Error())
}
// If image is Jpg this will generate the Image //
jpgI, errJpg := jpeg.Decode(res)
if errJpg == nil {
f, _ = os.OpenFile(newpath + "/" + uid.String() + ".jpg", os.O_WRONLY | os.O_CREATE, 0777)
jpeg.Encode(f, jpgI, &jpeg.Options{Quality:75})
fmt.Println("Jpg created")
}else {
fmt.Println(errJpg.Error())
}
defer func() {
f.Close()
}()
render.Json(w, "ok")
}
Input dataurl is :
"data:image/jpeg;base64,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"
This might help