beego3---gohttp底层实现

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())
}