Beego-自建Http中介軟體

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1. 自建Http中介軟體

1.以類型的形式

type SingleHost struct{

  handler http.Handler

  allowedHost string

}

func (this *SingleHost)ServerHTTP(w http.ResponseWriter,r *http.Request){

  if r.host == this.allowedHost {

   this.handler.ServerHTTP(w,r)

  } else{

    w.WriteHeader(403)

}

}

func myHandler (w http.ResponseWriter,r *http.Request){

  w.Write([]byte(“Hello world”))

}

func main(){

  single := &SingleHost{

   handler : http.HandlerFunc(myHandler),

  allowedHost : ”localhost:8080”

}

http.ListenAndServe(“:8080”,single)

}

2. 以函數的形式

func SingleHost (handler http.Handler,allowHost string){

   fn:= func(w http.ResponseWriter,r *http.Request){

   if r.host == allowedHost {

      handler.ServerHTTP(w,r)

  } else{

    w.WriteHeader(403)

   }

  }

return http.HandlerFunc(fn)

}

【說明】： 內容來自無聞的go-web講解，尊重原版，感謝作者！   Go編程基礎

Beego-自建Http中介軟體