如何防止http.ListenAndServe更改静态输出中的样式属性？ [重复]

Question

This question already has an answer here:

• How can I return an encoded string in an http response body? 2 answers

In a very rudimentary handwritten web page (no js, stylesheets, etc) I have some static html with a section that looks like this.

<li style="font-size:200%; margin-bottom:3vh;">
  <a href="http://192.168.1.122:8000">
    Reload HMI
  </a>
</li>

I'm using Go's http.ListenAndServe to serve the page. What's coming out looks like this:

<li style="font-size:200%!;(MISSING) margin-bottom:3vh;">
  <a href="http://192.168.1.122:8000">
    Reload HMI
  </a>
</li>

Note the altered style attribute.

The server implementation is also rudimentary. It's launched as a goroutine:

// systemControlService provides pages on localhost:8003 that
// allow reboots, shutdowns and restoring configurations.
func systemControlService() {
    info("Launching system control service")
    http.HandleFunc("/", controlPage)
    log.Fatal(http.ListenAndServe(":8003", nil))
}

// loadPage serves the page named by title
func loadPage(title string) ([]byte, error) {
    filename := "__html__/" + title + ".html"
    info(filename + " requested")
    content, err := ioutil.ReadFile(filename)
    if err != nil {
        info(fmt.Sprintf("error reading file: %v", err))
        return nil, err
    }
    info(string(content))
    return content, nil
}

// controlPage serves controlpage.html
func controlPage(w http.ResponseWriter, r *http.Request) {
    p, _ := loadPage("controlpage")
    fmt.Fprintf(w, string(p))
}                                    

In func loadPage() above, info is a logging call. For debug, I'm calling it just before returning the content of controlpage.html. The log entry shows it's not mangled at that point, so the problem pretty much has to be within ListenAndServe.

I'm not finding anything in the Go docs for http that seems applicable. I have no idea what's going on here. Any help appreciated.

</div>

Answer 1

Can you try this, note Fprint rather than Fprintf

func controlPage(w http.ResponseWriter, r *http.Request) {
    p, _ := loadPage("controlpage")
    fmt.Fprint(w, string(p))
}