Created
March 19, 2021 08:39
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GoWeb: basic: Handle (Handle vs HandleFunc and using Handle type with variable)
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//Handle | |
// - Handle과 HandleFunc의 차이점은 2번째 parameter로 어떤 타입을 취급하냐이다. | |
// func Handle(pattern string, handler Handler) | |
// func HandleFunc(pattern string, handler func(ResponseWriter, *Request)) | |
package main | |
import ( | |
"fmt" | |
"net/http" | |
) | |
type login int | |
type welcome int | |
func (l login) ServeHTTP(w http.ResponseWriter, r *http.Request) { | |
fmt.Fprint(w, "on login page") | |
} | |
func (wl welcome) ServeHTTP(w http.ResponseWriter, r *http.Request) { | |
fmt.Fprint(w, "on welcome page") | |
} | |
// func myLogin(w http.ResponseWriter, r *http.Request) { | |
// fmt.Fprintf(w, ` | |
// <!DOCTYPE html> | |
// <html> | |
// <head> | |
// Login | |
// </head> | |
// <body> | |
// <h1>Please enter your username and password</h1> | |
// </body> | |
// </html> | |
// `) | |
// } | |
// func myWelcome(w http.ResponseWriter, r *http.Request) { | |
// fmt.Fprintf(w, ` | |
// <!DOCTYPE html> | |
// <html> | |
// <head> | |
// Hi | |
// </head> | |
// <body> | |
// <h1>Welcome</h1> | |
// </body> | |
// </html> | |
// `) | |
// } | |
func main() { | |
// http.HandleFunc("/login", myLogin) | |
// http.HandleFunc("/welcome/", myWelcome) | |
// http.Handle("/login", http.HandlerFunc(myLogin)) // HandlerFunc(f) == handler | |
// http.Handle("/welcome", http.HandlerFunc(myWelcome)) // HandlerFunc도 handler interface가 가지는 ServeHTTP method를 내장하고 있다. | |
var i login | |
var j welcome | |
http.Handle("/login", i) | |
http.Handle("/welcome", j) | |
fmt.Println("Listening on port 8080....") | |
http.ListenAndServe("localhost:8080", nil) | |
} | |
// installed gin : go get github.com/codegangsta/gin |
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