我看到的问题是我试图将http.FileServer与 Gorilla mux Router.Handle 功能一起使用。这不起作用（图像返回 404）。myRouter := mux.NewRouter()myRouter.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))这有效（图像显示正常）..http.Handle("/images/", http.StripPrefix("/images/", http.FileServer(http.Dir(HomeFolder + "images/"))))下面简单的go web server程序，显示问题...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猫小萌
TA贡献1911条经验 获得超7个赞
截至 2015 年 5 月，gorilla/mux包仍然没有版本发布。但是现在问题不同了。不是myRouter.Handle不匹配 url 并且需要正则表达式，它确实如此！但http.FileServer需要从 url 中删除前缀。下面的例子工作正常。
ui := http.FileServer(http.Dir("ui"))
myRouter.Handle("/ui/", http.StripPrefix("/ui/", ui))
请注意，上面的示例中没有 /ui/ {rest}。您还可以包装http.FileServer到 logger gorilla/handler 中，并看到请求到 FileServer 和响应 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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