没有路线与大猩猩匹配时提供文件？

Question

我使用 Gorilla Mux 作为我的网络服务器。我定义了一堆路由，但如果没有匹配的路由，我希望它为我的 index.html 文件提供服务。func (mgr *ApiMgr) InstantiateRestRtr() *mux.Router {    mgr.pRestRtr = mux.NewRouter().StrictSlash(true)    mgr.pRestRtr.PathPrefix("/api/").Handler(http.StripPrefix("/api/",        http.FileServer(http.Dir(mgr.fullPath+"/docsui"))))    for _, route := range mgr.restRoutes {        var handler http.Handler        handler = Logger(route.HandlerFunc, route.Name)        mgr.pRestRtr.Methods(route.Method)          .Path(route.Pattern)          .Name(route.Name)          .Handler(handler)    }    // Here I want to catch any unmatched routes, and serve my '/site/index.html` file.     // How can I do this?    return mgr.pRestRtr}

Answer 1

func NewRouter() *mux.Router {

    router := mux.NewRouter().StrictSlash(true)

    routes := client.GetRoutes()

    for _, route := range routes {

        var handler http.Handler

        handler = route.HandlerFunc

        handler = context.ClearHandler(handler)

        router.

            Methods(route.Method).

            Path(route.Pattern).

            Name(route.Name).

            Handler(handler)

    }

    r := OGRouter{router: router}

    router = r.router

    router.NotFoundHandler = http.HandlerFunc(r.NotFoundHandler)

    return router

}

/* Handled mux router drawback of giving 404 in every case i.e if either URI or METHOD

*  is not matched mux router will give 404. So, this case is handled her, if Method will

*  not match we will through 405

 */

func (router *OGRouter) NotFoundHandler(rw http.ResponseWriter, req *http.Request) {

    r := *router.router

    route := r.Get(req.RequestURI)

    if route != nil {

        if req.RequestURI == route.GetName() {

            routeMatch := mux.RouteMatch{Route: route}

            if !route.Match(req, &routeMatch) {

                rw.WriteHeader(http.StatusMethodNotAllowed)

            }

        } else {

            rw.WriteHeader(http.StatusNotFound)

        }

    } else {

        rw.WriteHeader(http.StatusNotFound)

    }

}

type OGRouter struct {

    router *mux.Router

}

在您获得 404 的地方，您可以提供一个新页面