看來你已經接受了一個答案,但我想提出一個備用解決方案。
我質疑是否需要添加自定義複用器。在這個例子中,我使用的是大猩猩複用器,但這只是因爲我熟悉它的模式匹配。從理論上講,您可以匹配傳入URL中的模式,而無需更換默認的複用器。
我的代碼維護處理函數在一個映射(字符串:處理程序名稱=>函數文字)...這適合使用默認的muxers HandleFunc方法。
樣品輸入/輸出:
GET /註冊/ 123
GET/123
hello from123.
GET /破壞/ 123
GET/123
[nothing]
package main
import (
"code.google.com/p/gorilla/mux"
"flag"
"log"
"net/http"
)
// Wraps server muxer, dynamic map of handlers, and listen port.
type Server struct {
Dispatcher *mux.Router
Urls map[string]func(w http.ResponseWriter, r *http.Request)
Port string
}
// May the signal never stop.
func main() {
//Initialize Server
server := &Server{Port: "3000", Dispatcher: mux.NewRouter(), Urls: make(map[string]func(w http.ResponseWriter, r *http.Request))}
var port = flag.String("port", "3000", "Default: 3000; Set the port for the web-server to accept incoming requests")
flag.Parse()
server.Port = *port
log.Printf("Starting server on port: %s \n", server.Port)
server.InitDispatch()
log.Printf("Initializing request routes...\n")
server.Start() //Launch server; blocks goroutine.
}
func (s *Server) Start() {
http.ListenAndServe(":"+s.Port, s.Dispatcher)
}
// Initialize Dispatcher's routes.
func (s *Server) InitDispatch() {
d := s.Dispatcher
// Add handler to server's map.
d.HandleFunc("/register/{name}", func(w http.ResponseWriter, r *http.Request) {
//somewhere somehow you create the handler to be used; i'll just make an echohandler
vars := mux.Vars(r)
name := vars["name"]
s.AddFunction(w, r, name)
}).Methods("GET")
d.HandleFunc("/destroy/{name}", func(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
name := vars["name"]
s.Destroy(name)
}).Methods("GET")
d.HandleFunc("/{name}", func(w http.ResponseWriter, r *http.Request) {
//Lookup handler in map and call it, proxying this writer and request
vars := mux.Vars(r)
name := vars["name"]
s.ProxyCall(w, r, name)
}).Methods("GET")
}
func (s *Server) Destroy(fName string) {
s.Urls[fName] = nil //remove handler
}
func (s *Server) ProxyCall(w http.ResponseWriter, r *http.Request, fName string) {
if s.Urls[fName] != nil {
s.Urls[fName](w, r) //proxy the call
}
}
func (s *Server) AddFunction(w http.ResponseWriter, r *http.Request, fName string) {
f := func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("hello from" + fName))
}
s.Urls[fName] = f // Add the handler to our map
}
令人擔憂的是,處理程序註冊表將隨着時間的推移不斷增長,並且由於處理器查找日益昂貴而導致請求週轉速度放慢。 – 2012-07-31 12:01:21