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golangでWebアプリケーションのルーティングを実装する!

Last updated at Posted at 2019-03-15

はじめに

golangで__Webアプリケーションのルーティング__を実装する方法を覚えたのでアウトプットします!

実装ページ

スクリーンショット 2019-03-15 20.24.19.png
スクリーンショット 2019-03-15 20.18.41.png
スクリーンショット 2019-03-15 20.19.17.png

コード

package main

import (
	"fmt"
	"net/http"
)

//「http://localhost:8080/hello」の処理
func helloHandle(w http.ResponseWriter, r *http.Request) {
	h := `
		<html>
			<head>
				<title>Hello</title>
			</head>
			<body>
				Hello
			</body>
		</html>
		`
	fmt.Fprint(w, h)
}

//「http://localhost:8080/goodbye」の処理
func goodbyeHandle(w http.ResponseWriter, r *http.Request) {
	h := `
		<html>
			<head>
				<title>goodbye</title>
			</head>
			<body>
				goodbye
			</body>
		</html>
		`
	fmt.Fprint(w, h)
}

//「http://localhost:8080/」の処理
func landingHandle(w http.ResponseWriter, r *http.Request) {
	h := `
		<html>
			<head>
				<title>Landing</title>
			</head>
			<body>
				Landing
			</body>
		</html>
		`
	fmt.Fprint(w, h)
}

func main() {
	// URLごとに関数を登録
	http.HandleFunc("/hello", helloHandle)
	http.HandleFunc("/goodbye", goodbyeHandle)
	http.HandleFunc("/", landingHandle)

	//Webサーバを起動
	if err := http.ListenAndServe(":8080", nil); err != nil {
		fmt.Println(err)
	}
}
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