我看到的問(wèn)題是我試圖將http.FileServer與 Gorilla mux Router.Handle 功能一起使用。這不起作用（圖像返回 404）。myRouter := mux.NewRouter()myRouter.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))這有效（圖像顯示正常）..http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))下面簡(jiǎn)單的go web server程序，顯示問(wèn)題...package mainimport ( "fmt" "net/http" "io" "log" "github.com/gorilla/mux")const ( HomeFolder = "/root/test/")func HomeHandler(w http.ResponseWriter, req *http.Request) { io.WriteString(w, htmlContents)}func main() { myRouter := mux.NewRouter() myRouter.HandleFunc("/", HomeHandler) // // The next line, the image route handler results in // the test.png image returning a 404. // myRouter.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/")))) // myRouter.Host("mydomain.com") http.Handle("/", myRouter) // This method of setting the image route handler works fine. // test.png is shown ok. http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/")))) // HTTP - port 80 err := http.ListenAndServe(":80", nil) if err != nil { log.Fatal("ListenAndServe: ", err) fmt.Printf("ListenAndServe:%s\n", err.Error()) }}const htmlContents = `<!DOCTYPE HTML><html> <head> <title>Test page</title> <meta charset = "UTF-8" /> </head> <body> <p> <img src="/images/test.png" height="640" width="480"> </p> </body></html>
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Smart貓小萌
TA貢獻(xiàn)1911條經(jīng)驗(yàn) 獲得超7個(gè)贊
截至 2015 年 5 月，gorilla/mux包仍然沒(méi)有版本發(fā)布。但是現(xiàn)在問(wèn)題不同了。不是myRouter.Handle不匹配 url 并且需要正則表達(dá)式，它確實(shí)如此！但http.FileServer需要從 url 中刪除前綴。下面的例子工作正常。
ui := http.FileServer(http.Dir("ui"))
myRouter.Handle("/ui/", http.StripPrefix("/ui/", ui))
請(qǐng)注意，上面的示例中沒(méi)有 /ui/ {rest}。您還可以包裝http.FileServer到 logger gorilla/handler 中，并看到請(qǐng)求到 FileServer 和響應(yīng) 404 出去。
ui := handlers.CombinedLoggingHandler(os.Stderr,http.FileServer(http.Dir("ui"))
myRouter.Handle("/ui/", ui) // getting 404
// works with strip: myRouter.Handle("/ui/", http.StripPrefix("/ui/", ui))
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