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:  * 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())

}