🔳 Gracefully handle image uploading and thumbnail creation.
go get github.com/olahol/go-imageuploadThumbnail creator.
package main
import (
"net/http"
"github.com/olahol/go-imageupload"
)
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "index.html")
})
http.HandleFunc("/upload", func(w http.ResponseWriter, r *http.Request) {
if r.Method != "POST" {
http.NotFound(w, r)
return
}
img, err := imageupload.Process(r, "file")
if err != nil {
panic(err)
}
thumb, err := imageupload.ThumbnailPNG(img, 300, 300)
if err != nil {
panic(err)
}
thumb.Write(w)
})
http.ListenAndServe(":5000", nil)
}<html>
<body>
<form method="POST" action="/upload" enctype="multipart/form-data">
<input type="file" name="file">
<input type="submit">
</form>
</body>
</html>- Ola Holmström (@olahol)
- Shintaro Kaneko (@kaneshin)