大猩猩mux，不包括扩展请求

Question

An attempt to configure go server routing with github.com/gorilla/mux to respond to all requests with index.html but exclude requests with extension .jpg|.js|.png

Static files excluded due to extension will be routed to FileServer. configured.

Failed Attempt

  func main() {
        r := mux.NewRouter()

        r.HandleFunc("/{path:^.*([!js|jpg|png|gif])$}", func(w http.ResponseWriter, r *http.Request) {
            http.ServeFile(w, r, "dist/index.html")
        })

        r.PathPrefix("/").Handler(http.StripPrefix("/", http.FileServer(http.Dir("dist"))))

        http.Handle("/", r)
        http.ListenAndServe(":8000", nil)
    }

Answer 1

This "^.*([!js|jpg|png|gif])$}" is not a valid regular expession for matching string that does not have .jpg|.js|.png

However, In golang Negative lookahead isn't supported for technical reasons, specifically because it conflicts with the O(n)-time guarantees of the library.

I would suggest you to do it other way around ie, add handlers for png,js,css files etc to serve the files as such