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main.go
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main.go
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package main
import (
"fmt"
"log"
"net/http"
)
func formHandler(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil { // Formを使うには事前にParseFormを実行する
fmt.Fprintf(w, "ParseForm() err: %v", err)
return
}
fmt.Fprintf(w, "POST request successful")
name := r.FormValue("name") // キーを指定してフォームデータを取得
address := r.FormValue("address")
fmt.Fprintf(w, "Name = %s\n", name) // %sは文字列の表示
fmt.Fprintf(w, "Address = %s\n", address)
}
func helloHandler(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/hello" { // r.URL.Pathはリクエストのパスを返す
http.Error(w, "404 not found", http.StatusNotFound)
return
}
if r.Method != "GET" {
http.Error(w, "method is not supported", http.StatusNotFound)
return
}
fmt.Fprintf(w, "hello!")
}
func main() {
fileServer := http.FileServer(http.Dir("./static")) // staticというディレクトリにあるファイルがサーブされる
http.Handle("/", fileServer)
http.HandleFunc("/form", formHandler)
http.HandleFunc("/hello", helloHandler)
fmt.Printf("Starting server at port 8080\n")
if err := http.ListenAndServe(":8080", nil); err != nil {
log.Fatal(err)
}
}