如何在go中将多个处理程序分配给同一uri？

Question

I have two tasks I need to fulfill when the "/" pattern is present in a request, both of which require using http handlers.

They are:

http.Handle("/", http.FileServer(http.Dir("dtfw-tool/build/")))
http.HandleFunc("/", index)

The index handler checks for proper authentication to access a webpage, and the handler above it serves up a directory (in the future I will make it to where it will only serve the directory if authentication requirements are met).

Is it possible to have two handlers for the same pattern (currently gives error)? If not, is there any other way to check authentication and serve up the directory with a single handler?

Answer 1

I'm going to have to retract my previous answer acceptance because this is much closer to what I was looking for (have to import github.com/abbot/go-http-auth):

package main

import (
    "fmt"
    "net/http"
    auth "github.com/abbot/go-http-auth"
)

func Secret(user, realm string) string {
    if user == "john" {
        // password is "hello"
        return "$1$dlPL2MqE$oQmn16q49SqdmhenQuNgs1"
    }
    return ""
}

func main() {
    fmt.Println("-----> Starting HTTP server...")

authenticator := auth.NewBasicAuthenticator("secret.com", Secret)
http.HandleFunc("/", authenticator.Wrap(func(res http.ResponseWriter, req *auth.AuthenticatedRequest) {
    http.FileServer(http.Dir(".")).ServeHTTP(res, &req.Request)
}))

http.ListenAndServe(":5042", nil)
}

This method is much easier to follow and more intutive (for me at least).