转到HTTP服务器：使用地图处理路线

Question

I have a map in Go with routes (e.g. /static/stylesheets/main.css) as keys and the corresponding code as the value (effectively, a giant string). I was just wondering, is there an easy way in Go by which I can create an HTTP server, which always check an incoming request against the map and renders the value associated with the matched key, if the key exists?

So far, I have...

func main() {
    var m = generateMap()
    http.handleFunc("/", renderContent);
}

func renderContent(w http.ResponseWriter, r *http.Request) {
    io.WriteString(w, m[path]); 
}

I know this code is far from done, but hopefully it clarifies my objective. How would I pass in the path and m into renderContent as well as how do I have handleFunc actually handle regexes (essentially, any path)?

Answer 1

Make your map an http.Handler:

type httpFiles struct {
    fileMap map[string][]byte
}

func (hf httpFiles) ServeHTTP(w http.ResponseWriter, r *http.Request) {
    path := r.URL.Path
    w.Write(hf.fileMap[path])
}