beego3---gohttp底层实现-白红宇

beego3---gohttp底层实现

阅读量：6007 次

发布时间：2019-06-20

本文共 3057 字，大约阅读时间需要 10 分钟。

package main//gohttp底层实现,通过gohttp不是通过beego实现的输出//import (    "io"    "log"    "net/http")func main() {    //设置路由    http.HandleFunc("/", sayHello)    err := http.ListenAndServe(":8080", nil)    if err != nil {        log.Fatal(err)    }}func sayHello(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "hello vwesion1")}

package main//gohttp第二个版本：通过mux,handler实现路由import (    "io"    "log"    "net/http")func main() {    mux := http.NewServeMux()      //ServeMux//实现handler注册到ServeMux然后在进行路由的注册    mux.Handle("/", &myHandler{})  //注册路由和handler    mux.Handle("/hello", sayHello) //通过函数注册路由    err := http.ListenAndServe(":8080", mux)    if err != nil {        log.Fatal(err)    }}type myHandler struct { //这个handle要实现ServerHTTP方法}func (this *myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "hello vwesion2，"+r.URL.String())}func sayHello(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "hello vwesion2，"+r.URL.String())}

package main//模拟gohttp底层，第三个版本import (    "fmt"    "io"    "log"    "net/http"    "os" //获取静态文件    "time")func main() {    server := http.Server{        Addr:        ":8080",        Handler:     &myHandler{}, //自定义handler        ReadTimeout: 5 * time.Second,    }    myMux = make(map[string]func(http.ResponseWriter, *http.Request)) //初始化map    myMux["/"] = sayHello                                             //访问根目录调用sayHellp方法    myMux["/bye"] = sayBye                                            //访问/bye调用sayBye方法    err := server.ListenAndServe()    if err != nil {        log.Fatal(err)    }}type myHandler struct{}func (this *myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { //handler来解析url，调用不同的方法，    if h, ok := myMux[r.URL.String()]; ok { //if ok 对map的断言，ok是判断存不存在，h是获取的map的value,        fmt.Println(h, ok)        h(w, r)        return    }    io.WriteString(w, "uuuu，"+r.URL.String())}var myMux map[string]func(http.ResponseWriter, *http.Request) //自定义mux,根据不同的string调用不同的方法func sayHello(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "hello "+r.URL.String())}func sayBye(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "sayBye "+r.URL.String())}

package main//获取静态文件import (    "io"    "log"    "net/http"    "os" //获取路径，静态文件服务器要获取绝对路径，根据当前路径定位到绝对路径，)func main() {    mux := http.NewServeMux()      //ServeMux//实现handler注册到ServeMux然后在进行路由的注册    mux.Handle("/", &myHandler{})  //注册路由和handler    mux.Handle("/hello", sayHello) //通过函数注册路由    wd, err := os.Getwd() //wd是当前路径    if err != nil {        log.Fatal(err)    }    mux.Handle("/static/",        http.StripPrefix("/static/", http.FileServer(http.Dir(wd)))) //StripPrefix去除static前缀    err = http.ListenAndServe(":8080", mux)    if err != nil {        log.Fatal(err)    }}type myHandler struct { //这个handle要实现ServerHTTP方法}func (this *myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "hello vwesion2，"+r.URL.String())}func sayHello(w http.ResponseWriter, r *http.Request) {    io.WriteString(w, "hello vwesion2，"+r.URL.String())}

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