Format and remove 08.3.md spaces

zh/08.3.md

@@ -64,56 +64,56 @@ Go没有为REST提供直接支持，但是因为RESTful是基于HTTP协议实现
 
 ```Go
 
-	package main
+package main
 
-	import (
-		"fmt"
-		"github.com/julienschmidt/httprouter"
-		"log"
-		"net/http"
-	)
+import (
+	"fmt"
+	"github.com/julienschmidt/httprouter"
+	"log"
+	"net/http"
+)
 
-	func Index(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
-		fmt.Fprint(w, "Welcome!\n")
-	}
+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 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 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, ps httprouter.Params) {
-		uid := ps.ByName("uid")
-		fmt.Fprintf(w, "you are modify user %s", 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, ps httprouter.Params) {
-		uid := ps.ByName("uid")
-		fmt.Fprintf(w, "you are delete user %s", 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, ps httprouter.Params) {
-		// uid := r.FormValue("uid")
-		uid := ps.ByName("uid")
-		fmt.Fprintf(w, "you are add user %s", 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() {
-		router := httprouter.New()
-		router.GET("/", Index)
-		router.GET("/hello/:name", Hello)
+func main() {
+	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)
+	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))
-	}
+	log.Fatal(http.ListenAndServe(":8080", router))
+}
 
 ```
 上面的代码演示了如何编写一个REST的应用，我们访问的资源是用户，我们通过不同的method来访问不同的函数，这里使用了第三方库`github.com/julienschmidt/httprouter`，在前面章节我们介绍过如何实现自定义的路由器，这个库实现了自定义路由和方便的路由规则映射，通过它，我们可以很方便的实现REST的架构。通过上面的代码可知，REST就是根据不同的method访问同一个资源的时候实现不同的逻辑处理。