htmltemplatesgoplaintext

HTML output is being interpreted as plain text instead of being received as html

I'm sure this is just something dumb I'm doing, but I'm new to Go, so not sure what's going on here. I have the following basic setup.

requestHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    t := template.New("test")
    t, _ := template.ParseFiles("base.html")
    t.Execute(w, "")
})

server := &http.Server{
    Addr:           ":9999",
    Handler:        requestHandler,
    ReadTimeout:    10 * time.Second,
    WriteTimeout:   10 * time.Second,
    MaxHeaderBytes: 1 << 20,
}

log.Fatal(server.ListenAndServe())

The contents of base.html are as follows:

<DOCTYPE html>
<html>
    <body>
        base.html
    </body>
</html>

When I run the server and load the page, I see the HTML inside the template verbatim -- instead of the interpreted version. Turns out, the template is being wrapped in pre tags, and is subsequently being wrapped in a new document.

So what's going on? Why is go by default treating this as plain text rather than sending it over as html, so that the browser can render it properly? Surely this must be a simple misunderstanding, but not getting anything in searches. Ideas?

Solution

  • You need to add a header with the Content-Type

     w.Header().Set("Content-Type", "text/html")