7Days Gee Day1 添加部分注释

day1/base2/main.go

@@ -1,25 +1,33 @@
 package main
 
 import (
-	"fmt"
 	"net/http"
 )
 
 type Engine struct{}
 
 func (engine *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	switch r.URL.Path {
+	path := r.URL.Path
+	switch path {
 	case "/":
-		fmt.Fprintf(w, "URL.Path = %q", r.URL.Path)
+		_, _ = w.Write([]byte("Hello Go"))
-	case "/hello":
+	case "/gee":
-		for k, v := range r.Header {
+		_, _ = w.Write([]byte("Gee!!!"))
-			fmt.Fprintf(w, "Header[%q] = %q", k, v)
-		}
 	default:
-		fmt.Fprintf(w, "404 NOT FOUND: %s", r.URL)
+		_, _ = w.Write([]byte("天啊, 404啦!!!!"))
 	}
 }
+
 func main() {
 	engine := new(Engine)
 	http.ListenAndServe(":8000", engine)
 }
+
+//// 自定义ServeMux
+//func main() {
+//	mux := new(http.ServeMux)
+//	mux.HandleFunc("/hello", func(writer http.ResponseWriter, request *http.Request) {
+//		_, _ = writer.Write([]byte("Hello Go"))
+//	})
+//	_ = http.ListenAndServe(":8000", mux)
+//}

day1/base3/gee/gee.go

@@ -2,6 +2,7 @@ package gee
 
 import (
 	"fmt"
+	"log"
 	"net/http"
 )
 
@@ -18,12 +19,15 @@ func (engine *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	// 获取连接的请求方式和路径
 	key := r.Method + "-" + r.URL.Path
 	// 对比和匹配路由
-	if handler, ok := engine.router[key]; ok {
+	handler, ok := engine.router[key]
+	if ok {
 		handler(w, r)
 	} else {
 		w.WriteHeader(http.StatusNotFound)
 		_, _ = fmt.Fprintf(w, "404 NOT FOUND: %s", r.URL)
 	}
+	// 这里我们加上时间,容易理解
+	log.Println("请求方式:", r.Method, r.URL.Path, "对应:", key, "是否对应上:", ok)
 }
 
 // Run 启动服务
@@ -36,6 +40,8 @@ func (engine *Engine) Run(addr string) (err error) {
 func (engine *Engine) addRoute(method string, pattern string, handler HandlerFunc) {
 	key := method + "-" + pattern
 	engine.router[key] = handler
+	// 打印对应的 key
+	fmt.Println("请求方式:", method, pattern, " 对应: ", key)
 }
 
 // GET 添加GET路由规则

day1/base3/main.go

@@ -7,19 +7,24 @@ import (
 )
 
 func main() {
+	// 创建 Engine 实例
 	r := gee.New()
+	// 增加一个 GET 路由, path 为 /
 	r.GET("/", func(w http.ResponseWriter, r *http.Request) {
 		_, _ = w.Write([]byte("Hello World"))
 	})
+	// 增加一个 GET 路由, path 为 /hello
 	r.GET("/hello", func(w http.ResponseWriter, r *http.Request) {
 		for k, v := range r.Header {
 			_, _ = fmt.Fprintf(w, "Header[%q] = %q", k, v)
 		}
 	})
+	// 增加一个 POST 路由, path 为 /login
 	r.POST("/login", func(w http.ResponseWriter, r *http.Request) {
 		_, _ = fmt.Fprintf(w, "POST login")
 	})
-	err := r.Run(":9000")
+	// 创建服务端口的监听并开启 Http 服务
+	err := r.Run(":8000")
 	if err != nil {
 		return
 	}