Как обработать NotFound?

Question

[Владимир Грабко]

Я юзаю этот роутер.
У меня есть обьект router.NotFound. Я смог повесить на него файловый сервер. Но а мне необходимо при этой ошибке вызывать функцию. Как сделать?
Зарание спасибо.

Answer 1

[Александр Сёмченко]

Вот так> stackoverflow.com/questions/30500322/httprouter-co...

Comments

[Александр Сёмченко]

нез

[Владимир Грабко]

func MyNotFound(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
	w.WriteHeader(http.StatusNotFound) // StatusNotFound = 404
	w.Write([]byte("My own Not Found handler."))
	w.Write([]byte(" The page you requested could not be found."))
}
func RunServer(host string) error {
	router := httprouter.New()
	router.GET("/sdk/ws/", WSHandler)
	router.GET("/sdk/ajax/:data", AjaxHandler)
	router.GET("/sdk/jsonp/:data", JsonpHandler)
	router.ServeFiles("/p/*filepath", http.Dir("public/"))
	router.NotFound = MyNotFound
	return http.ListenAndServe(host, router)
}

./backend.go:60: cannot use MyNotFound (type func(http.ResponseWriter, *http.Request)) as type http.Handler in assignment:
func(http.ResponseWriter, *http.Request) does not implement http.Handler (missing ServeHTTP method)

[Александр Сёмченко]

Владимир Грабко: router.NotFound = http.HandlerFunc(MyNotFound) вот так
Рабочий пример:

package main

import (
	"github.com/julienschmidt/httprouter"
	"fmt"
	"net/http"
	"log"
)

func Index(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
	fmt.Fprint(w, "Welcome!\n")
}

func Hello(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
	fmt.Fprintf(w, "hello, %s!\n", ps.ByName("name"))
}

func MyNotFound(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
	w.WriteHeader(http.StatusNotFound) // StatusNotFound = 404
	w.Write([]byte("My own Not Found handler."))
	w.Write([]byte(" The page you requested could not be found."))
}

func main() {
	router := httprouter.New()
	router.GET("/", Index)
	router.GET("/hello/:name", Hello)
	router.NotFound = http.HandlerFunc(MyNotFound)
	log.Fatal(http.ListenAndServe(":8080", router))
}