如何在Golang Web中压缩模板

Question

I have already set the value of contest-encoding, but how can I gzip the template, since the file is still to big.

func indexPageHandler(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Encoding", "gzip")
    r.Header.Set("Accept-Encoding", "gzip")
    tmpl, err := template.New("index.html").ParseGlob("./templates/*")
    if err != nil {
        log.Println(err)
        return
    }   
    err = tmpl.Execute(w, nil)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }   
}

Is there any function that can gzip the response？]

Followed by the advise, I changed my code as this:

func indexPageHandler(w http.ResponseWriter, r *http.Request) {
    w.Header().Set("Content-Encoding", "gzip")
    r.Header.Set("Accept-Encoding", "gzip")
    gz := gzip.NewWriter(w)
    defer gz.Close()
    tmpl, err := template.New("index.html").ParseGlob("./templates/*")
    if err != nil {
        log.Println(err)
        return
    }   
    err = tmpl.Execute(gz, nil)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }   
}

But when I query the url, I only download the gzip file. What's wrong with it?

Answer 1

Anyway, I have not solved this problem. As I mentioned, when I add this code, restart the server and query this url, I actually download the zip file!?

In the end, I used Nginx to make a reverse proxy to compress the template. It works.

Still thanks to @Anisus