How can I use the <img> tag to display a local image in Go?
I've tried the following:
fmt.Fprintf(w, "</br><img src='" + path.Join(rootdir, fileName) + "' ></img>")
where rootdir = os.Getwd() and fileName is the name of the file.
If I try http.ServeFile with the same path then I can download the image, however I would like to embed it in the webpage itself.
分享 I'll preface this by saying my Go knowledge is atrocious at best, but the few experiments I've done have involved this a bit, so maybe this will at least point you in the right direction. Basically, the below code uses a Handle for anything under /images/ that serves files from the images folder in your root directory (in my case it was /home/username/go). You can then either hardcode /images/ in your <img> tag, or use path.Join() as you did before, making images the first argument.
package main
import (
"fmt"
"net/http"
"os"
"path"
)
func handler(w http.ResponseWriter, r *http.Request) {
fileName := "testfile.jpg"
fmt.Fprintf(w, "<html></br><img src='/images/" + fileName + "' ></html>")
}
func main() {
rootdir, err := os.Getwd()
if err != nil {
rootdir = "No dice"
}
// Handler for anything pointing to /images/
http.Handle("/images/", http.StripPrefix("/images",
http.FileServer(http.Dir(path.Join(rootdir, "images/")))))
http.HandleFunc("/", handler)
http.ListenAndServe(":8080", nil)
}
