Update RESTful

zh/08.3.md

@@ -68,41 +68,51 @@ Go没有为REST提供直接支持，但是因为RESTful是基于HTTP协议实现
 
 	import (
 		"fmt"
-		"github.com/drone/routes"
+		"github.com/julienschmidt/httprouter"
+		"log"
 		"net/http"
 	)
 
-	func getuser(w http.ResponseWriter, r *http.Request) {
-		params := r.URL.Query()
-		uid := params.Get(":uid")
+	func Index(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
+		fmt.Fprint(w, "Welcome!\n")
+	}
+
+	func Hello(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		fmt.Fprintf(w, "hello, %s!\n", ps.ByName("name"))
+	}
+
+	func getuser(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		uid := ps.ByName("uid")
 		fmt.Fprintf(w, "you are get user %s", uid)
 	}
 
-	func modifyuser(w http.ResponseWriter, r *http.Request) {
-		params := r.URL.Query()
-		uid := params.Get(":uid")
+	func modifyuser(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		uid := ps.ByName("uid")
 		fmt.Fprintf(w, "you are modify user %s", uid)
 	}
 
-	func deleteuser(w http.ResponseWriter, r *http.Request) {
-		params := r.URL.Query()
-		uid := params.Get(":uid")
+	func deleteuser(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		uid := ps.ByName("uid")
 		fmt.Fprintf(w, "you are delete user %s", uid)
 	}
 
-	func adduser(w http.ResponseWriter, r *http.Request) {
-		uid := r.FormValue("uid")
+	func adduser(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
+		// uid := r.FormValue("uid")
+		uid := ps.ByName("uid")
 		fmt.Fprintf(w, "you are add user %s", uid)
 	}
 
 	func main() {
-		mux := routes.New()
-		mux.Get("/user/:uid", getuser)
-		mux.Post("/user/", adduser)
-		mux.Del("/user/:uid", deleteuser)
-		mux.Put("/user/:uid", modifyuser)
-		http.Handle("/", mux)
-		http.ListenAndServe(":8088", nil)
+		router := httprouter.New()
+		router.GET("/", Index)
+		router.GET("/hello/:name", Hello)
+
+		router.GET("/user/:uid", getuser)
+		router.POST("/adduser/:uid", adduser)
+		router.DELETE("/deluser/:uid", deleteuser)
+		router.PUT("/moduser/:uid", modifyuser)
+
+		log.Fatal(http.ListenAndServe(":8080", router))
 	}
 
 ```