GO http的一些初级小例子

第一个简单例子

package main import "io" import "log" import "net/http" func sayHello(w http.ResponseWriter,r *http.Request){ io.WriteString(w,"Hello world,this is version one.") } func main(){ //set route http.HandleFunc("/",sayHello) err:=http.ListenAndServe(":8080",nil)//default while the second parameter is nil if err!=nil{ log.Fatal(err) } }

方式二

package main import "io" import "log" import "net/http" func main(){ mux:=http.NewServeMux() mux.Handle("/",&myHandler{}) err:=http.ListenAndServe(":8080",mux)//default while the second parameter is nil if err!=nil{ log.Fatal(err) } } type myHandler struct{} func (this *myHandler) ServeHTTP(w http.ResponseWriter,r *http.Request){//must have io.WriteString(w,"URL:"+r.URL.String()) }

关于两个页面的统合

package main import "io" import "log" import "net/http" func main(){ mux:=http.NewServeMux() mux.Handle("/",&myHandler{})//root for the muHandler mux.HandleFunc("/hello",sayHello)//the page that you can skip to err:=http.ListenAndServe(":8080",mux)//default while the second parameter is nil if err!=nil{ log.Fatal(err) } } type myHandler struct{} func (this *myHandler) ServeHTTP(w http.ResponseWriter,r *http.Request){//must have io.WriteString(w,"URL:"+r.URL.String()) } func sayHello(w http.ResponseWriter,r *http.Request){ io.WriteString(w,"Hello world,this is version 2") }

底层调用Server(最高效)

package main import "io" import "log" import "net/http" import "time" var mux map[string]func(http.ResponseWriter,*http.Request) func main(){ server := http.Server{ Addr:":8080", Handler: &myHandler{}, ReadTimeout: 5*time.Second, } mux = make(map[string]func(http.ResponseWriter,*http.Request)) mux["/hello"]=sayHello mux["/bye"]=sayBye err:=server.ListenAndServe() if err!=nil{ log.Fatal(err) } } type myHandler struct{} func (this *myHandler) ServeHTTP(w http.ResponseWriter,r *http.Request){//must have if h,ok:=mux[r.URL.String()];ok{ h(w,r) return } io.WriteString(w,"URL:"+r.URL.String()) } func sayHello(w http.ResponseWriter,r *http.Request){ io.WriteString(w,"Hello world,this is version 2") } func sayBye(w http.ResponseWriter,r *http.Request){ io.WriteString(w,"Bye Bye,this is version 2") }

实现静态目录

package main import "io" import "log" import "net/http" import "os" func main(){ mux:=http.NewServeMux() mux.Handle("/",&myHandler{})//root for the muHandler mux.HandleFunc("/hello",sayHello)//the page that you can skip to wd,err:=os.Getwd()//get the path if err!=nil{ log.Fatal(err) } mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir(wd)))) err=http.ListenAndServe(":8080",mux)//default while the second parameter is nil if err!=nil{ log.Fatal(err) } } type myHandler struct{} func (this *myHandler) ServeHTTP(w http.ResponseWriter,r *http.Request){//must have io.WriteString(w,"URL:"+r.URL.String()) } func sayHello(w http.ResponseWriter,r *http.Request){ io.WriteString(w,"Hello world,this is version 2") }