dongqian8265 2018-12-03 12:10
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如何使用大猩猩Mux实现不区分大小写的URL匹配

I need to implement case insensitive URL matching in gorilla mux as it is done here for built in mux

I tried to achieve the same using middle-ware like this

router := mux.NewRouter()
router.Use(srv.GetCaseMiddleware())

//GetCaseMiddleware middleware to make match URL case insensitive
func (srv *Server) GetCaseMiddleware() (w mux.MiddlewareFunc) {
    var middleware mux.MiddlewareFunc = func(next http.Handler) http.Handler {
        return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
            r.URL.Path = strings.ToLower(r.URL.Path)
            next.ServeHTTP(w, r)
        })
    }
    return middleware
}

but still it throws 404 if URL case is changed,is there any way to implement it using gorilla-mux

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1条回答 默认 最新

  • draj30958 2018-12-03 15:22
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    Unfortunately, as of this writing, middleware functions are invoked after URL matching in gorilla/mux.

    Mux supports the addition of middlewares to a Router, which are executed in the order they are added if a match is found, including its subrouters.

    I would suggest going with the example in the link you provided.

    e.g.

    func CaselessMatcher(next http.Handler) http.Handler {
        return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
            r.URL.Path = strings.ToLower(r.URL.Path)
            next.ServeHTTP(w, r)
        })
    }
    

    Then, just wrap your multiplexer.

    r := mux.NewRouter()
    //...
    handler := CaselessMatcher(r)
    

    It's actually not bad IMO.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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