Routing (using gorilla/mux)

example

package main

import (
    "fmt"
    "net/http"

    "github.com/gorilla/mux"
)

func main() {
    r := mux.NewRouter()
    r.HandleFunc("/books/{title}/page/{page}", func(w http.ResponseWriter, r *http.Request) {
        vars := mux.Vars(r)
        title := vars["title"]
        page := vars["page"]

        fmt.Fprintf(w, "You've requested the book: %s on page %s\n", title, page)
    })

    http.ListenAndServe(":80", r)
}

Features of the gorilla/mux Router

Methods

Restrict the request handler to specific HTTP methods.

r.HandleFunc("/books/{title}", CreateBook).Methods("POST")
r.HandleFunc("/books/{title}", ReadBook).Methods("GET")
r.HandleFunc("/books/{title}", UpdateBook).Methods("PUT")
r.HandleFunc("/books/{title}", DeleteBook).Methods("DELETE")

Hostnames & Subdomains

Restrict the request handler to specific hostnames or subdomains.

r.HandleFunc("/books/{title}", BookHandler).Host("www.mybookstore.com")

Schemes

Restrict the request handler to http/https.

r.HandleFunc("/secure", SecureHandler).Schemes("https")
r.HandleFunc("/insecure", InsecureHandler).Schemes("http")

Path Prefixes & Subrouters

bookrouter := r.PathPrefix("/books").Subrouter()
bookrouter.HandleFunc("/", AllBooks)
bookrouter.HandleFunc("/{title}", GetBook)

Reference：

Routing (using gorilla/mux)