Go HTTP Server

• Simple use of HTTP Handlefunc

package mainimport (    "log"    "net/http")func main() {    //注册一个函数，响应某一个路由    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {        w.Write([]byte("hello this is version 1!!"))    })    //这里可以单独写一个函数传递给当前的路由    http.HandleFunc("/bye", SayBye)    log.Println("Start version v1")    log.Fatal(http.ListenAndServe(":4000", nil))}func SayBye(w http.ResponseWriter, r *http.Request) {    w.Write([]byte("Bye bye, this is version v1"))    //进行一个流式传递，将字符串转换为byte类型}

• Define the MUX yourself and use

package mainimport (    "log"    "net/http")func main() {    mux := http.NewServeMux()    //自己创建servemux，然后使用自己的handle方法    mux.Handle("/", &myHandler{})    //默认的mux中根路由包含了所有的未匹配的路由    mux.HandleFunc("/bye", SayBye)    log.Println("Start version v1")    log.Fatal(http.ListenAndServe(":4000", mux))}type myHandler struct{} //自己定义handler结构//实现myHandler的ServeHTPP方法func (*myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {    w.Write([]byte("Hello this is version 2!,the requeset URL is:" + r.URL.String()))    //这里可以打印出完整的URL，响应的都是根路由    //大部分web结构的路由都是在ServerHTTP的方法中实现的}func SayBye(w http.ResponseWriter, r *http.Request) {    w.Write([]byte("Bye bye, this is version v2"))    //进行一个流式传递，将字符串转换为byte类型}

• Listenandserve function

Source parsing func Listenandserve (addr string, handler handler) error {server: = &server{addr:addr, Handler:handler} RE Turn server.    Listenandserve ()}//Here you can see that we can customize the server object and then listen//Full source package Mainimport ("Log" "Net/http" "Time") Func main () { Server: = &http. server{Addr: ": 4000", Writetimeout:4 * time. Second,} MUX: = http. Newservemux ()///create Servemux yourself and use your own handle method, the MUX is a variable mux that implements the handler interface. Handle ("/", &myhandler{})//The root route in the default MUX contains all the unmatched route MUX. Handlefunc ("/bye", Saybye)//MUX is integrated into server, server. Handle is also an interface of the handle type, so you can assign the server directly. Handler = MUX Log. Println ("Start version v3") log. Fatal (server. Listenandserve ())}type MyHandler struct{}//self-defined handler structure//MyHandler method for Implementing SERVEHTPP func (*myhandler) servehttp (w http . Responsewriter, R *http. Request) {w.write ("]byte" ("Hello" is version 3!,the Requeset URL is: "+ r.url. String ()))//The complete URL can be printed here, in response to the root route}func Saybye (w http. Responsewriter, R *http.  Request) {  Time. Sleep (3 * time. Second) W.write ([]byte ("Bye Bye, this is version V3"))//Make a streaming pass, convert the string to a byte type}

New features of the
• GO1.8 that allow active stopping of HTTP servers

Package Mainimport ("Log" "Net/http" "OS" "Os/signal" "Time") Func main () {server: = &http. server{Addr: ": 4000", Writetimeout:4 * time. Second,} Quit: = Make (chan os. Signal)//Create Chan, to instruct me to quit this server, please help close Signal. Notify (quit, OS. INTERRUPT)//Register this notification event, once received by this singal, send an object to this Chan, when I receive an arbitrary object, I know that the server should exit the MUX: = http. Newservemux ()///create Servemux yourself and use your own handle method, the MUX is a variable mux that implements the handler interface. Handle ("/", &myhandler{})//The root route in the default MUX contains all the unmatched route MUX. Handlefunc ("/bye", Saybye)//MUX is integrated into server, server. Handle is also an interface of the handle type, so you can assign the server directly. Handler = MUX//Create a gorouting specifically to receive this Chan go func () {<-quit If err: = Server. Close (); Err! = Nil {log. Fatal ("Close server:", Err)}} () log. Println ("Start version v3") Err: = Server. Listenandserve () if err! = Nil {if Err = = http. errserverclosed {log.        Print ("Server closed under requeset!!")  } else {          Log.        Fatal ("Server closed unexpecteed!!") }} log. Println ("Server exit!!")} Type MyHandler struct{}//self-defined handler structure//Implement MyHandler SERVEHTPP method func (*myhandler) servehttp (w http. Responsewriter, R *http. Request) {w.write ("]byte" ("Hello" is version 3!,the Requeset URL is: "+ r.url. String ()))//The complete URL can be printed here, in response to the root route}func Saybye (w http. Responsewriter, R *http. Request) {time. Sleep (3 * time. Second) W.write ([]byte ("Bye Bye, this is version V3"))//Make a streaming pass, convert the string to a byte type}

• Usage of the base template

Go HTTP Server