wingyplus/http.go

## http.go
package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"time"
)

type ErrorResponse struct {
	Text      string `json:"text"`
	ErrorCode string `json:"error_code"`
}

func logAccess(handler http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		fmt.Println(time.Now().Format(time.RFC3339), r.Method, r.URL.Path)
		handler(w, r)
	}
}

func getMethod(handler http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "GET" {
			handler(w, r)
		}
	}
}

func postMethod(handler func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request) {
	return func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "POST" {
			handler(w, r)
		}
	}
}

func index(w http.ResponseWriter, r *http.Request) {
	m := ErrorResponse{Text: "Hello, AIS", ErrorCode: "1000"}
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(m)
}

func web(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, `<!doctype html>
			<html><body><h1>Hello, AIS</h1></body></html>`)
}

type FileContactList struct {
	f *os.File
}

func (cl *FileContactList) Save(tel string) {
	fmt.Fprintf(cl.f, `{"tel":"%s"}`+"\n", tel)
}

type ContactList interface {
	Save(tel string)
}

type ContactHandler struct {
	contactList ContactList
}

func (ch *ContactHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	ch.contactList.Save("11111111")
	w.Write([]byte("Hello, AIS"))
}

func main() {
	var file *os.File
	file, _ = os.OpenFile("hello.txt", os.O_CREATE|os.O_WRONLY, 0755)

	http.HandleFunc("/", getMethod(logAccess(index)))
	http.HandleFunc("/index.html", getMethod(logAccess(web)))
	http.Handle("/contact", &ContactHandler{
		contactList: &FileContactList{f: file},
	})
	http.ListenAndServe(":9000", nil)
}
	package main

	import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"time"
	)

	type ErrorResponse struct {
	Text string `json:"text"`
	ErrorCode string `json:"error_code"`
	}

	func logAccess(handler http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
	fmt.Println(time.Now().Format(time.RFC3339), r.Method, r.URL.Path)
	handler(w, r)
	}
	}

	func getMethod(handler http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
	if r.Method == "GET" {
	handler(w, r)
	}
	}
	}

	func postMethod(handler func(http.ResponseWriter, http.Request)) func(http.ResponseWriter, http.Request) {
	return func(w http.ResponseWriter, r *http.Request) {
	if r.Method == "POST" {
	handler(w, r)
	}
	}
	}

	func index(w http.ResponseWriter, r *http.Request) {
	m := ErrorResponse{Text: "Hello, AIS", ErrorCode: "1000"}
	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(m)
	}

	func web(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, `<!doctype html>
	<html><body><h1>Hello, AIS</h1></body></html>`)
	}

	type FileContactList struct {
	f *os.File
	}

	func (cl *FileContactList) Save(tel string) {
	fmt.Fprintf(cl.f, `{"tel":"%s"}`+"\n", tel)
	}

	type ContactList interface {
	Save(tel string)
	}

	type ContactHandler struct {
	contactList ContactList
	}

	func (ch ContactHandler) ServeHTTP(w http.ResponseWriter, r http.Request) {
	ch.contactList.Save("11111111")
	w.Write([]byte("Hello, AIS"))
	}

	func main() {
	var file *os.File
	file, _ = os.OpenFile("hello.txt", os.O_CREATE\|os.O_WRONLY, 0755)

	http.HandleFunc("/", getMethod(logAccess(index)))
	http.HandleFunc("/index.html", getMethod(logAccess(web)))
	http.Handle("/contact", &ContactHandler{
	contactList: &FileContactList{f: file},
	})
	http.ListenAndServe(":9000", nil)
	}