CleverGo 简体中文
CleverGo is a lightweight, feature-rich and trie based high performance HTTP request router.
- High Performance: see Benchmark shown above.
- Reverse Route Generation: there are two ways to generate URL by a route: named route and matched route.
- Route Group: as known as subrouter, see route group.
- Friendly to APIs: it is easy to design RESTful APIs and versioning your APIs by route group.
- Middleware: allow to plug middleware in route group or particular route, supports global middleware as well, see middleware exmaple.
- Error Handler allow to custom error response, for example, display an error page.
GO111MODULE=on go get github.com/clevergo/clevergopackage main
import (
"fmt"
"net/http"
"github.com/clevergo/clevergo"
)
func home(ctx *clevergo.Context) error {
return ctx.String(http.StatusOK, "hello world")
}
func hello(ctx *clevergo.Context) error {
return ctx.HTML(http.StatusOk, fmt.Sprintf("hello %s", ctx.Params.String("name")))
}
func main() {
router := clevergo.NewRouter()
router.Get("/", home)
router.Get("/hello/:name", hello)
http.ListenAndServe(":8080", router)
}func text(ctx *clevergo.Context) error {
return ctx.String(http.StatusOK, "hello world")
}
func html(ctx *clevergo.Context) error {
return ctx.HTML(http.StatusOK, "<html><body>hello world</body></html>")
}
func json(ctx *clevergo.Context) error {
return ctx.JSON(http.StatusOK, data)
}
func jsonp(ctx *clevergo.Context) error {
// equals to ctx.JSONPCallback(http.StatusOK, "callback", data)
return ctx.JSONP(http.StatusOK, data)
}
func xml(ctx *clevergo.Context) error {
return ctx.XML(http.StatusOK, data)
}
// Renders a template, you should register renderer first.
// https://github.com/clevergo/jetrenderer
// router.Renderer = jetrenderer.New(jet.NewHTMLSet("./views"))
func render(ctx *clevergo.Context) error {
return ctx.Render(http.StatusOK, view, data)
}There are some useful functions to retrieve the parameter value.
func (ctx *clevergo.Context) error {
name := ctx.Params.String("name")
page, err := ctx.Params.Int("page")
num, err := ctx.Params.Int64("num")
amount, err := ctx.Params.Uint64("amount")
enable, err := ctx.Params.Bool("enable")
price, err := ctx.Params.Float64("price")
return err
}Router.UseRawPath allows to match parameter that contains escaped slash %2f:
router.UseRawPath = truerouter.ServeFiles("/static/*filepath", http.Dir("/path/to/static"))
// sometimes, it is useful to treat http.FileServer as NotFoundHandler,
// such as "/favicon.ico".
router.NotFound = http.FileServer(http.Dir("public"))queryPost := func (ctx *clevergo.Context) error {
// generates URL by matched route.
url, _ := ctx.Route.URL("year", "2020", "month", "02", "slug", "hello world")
// generates URL by naming route.
// url, _ := ctx.RouteURL("post", "year", "2020", "month", "02", "slug", "hello world")
return nil
}
router.Get("/posts/:year/:month/:slug", queryPost, router.RouteName("post"))
// generates URL by naming route.
url, _ := router.URL("post", "year", "2020", "month", "02", "slug", "hello world")Error handler allow to custom error response.
type MyErrorHandler struct {
Tmpl *template.Template
}
func (meh MyErrorHandler) Handle(ctx *clevergo.Context, err error) {
// display an error page.
if err := meh.Tmpl.Execute(ctx.Response, err); err != nil {
ctx.Error(err.Error(), http.StatusInternalServerError)
}
}
router.ErrorHandler = MyErrorHandler{
Tmpl: template.Must(template.New("error").Parse(`<html><body><h1>{{ .Error }}</h1></body></html>`)),
}Middleware is a function func(next Handle) Handle. WrapHH is an adapter that converts func(http.Handler) http.Handler to a middleware.
Built-in middlewares:
Example:
// global middlewares.
serverHeader := func(next clevergo.Handle) clevergo.Handle {
return func(ctx *clevergo.Context) error {
// writes server header.
ctx.Response.Header().Set("Server", "CleverGo")
return next(ctx)
}
}
router.Use(
clevergo.Recovery(true),
serverHeader,
// third-party func(http.Handler) http.Handler middlewares
clevergo.WrapHH(gziphandler.GzipHandler), // https://github.com/nytimes/gziphandler
// ...
)
authenticator := func(next clevergo.Handle) clevergo.Handle {
return func(ctx *clevergo.Context) error {
// authenticate returns an user instance and a boolean value indicates whether the provided credential is valid.
if user, ok := authenticate(ctx); !ok {
// returns an error if failed, in order to stop subsequent middlewares and handle.
// you can also write response here, and return nil.
return clevergo.NewError(http.StatusUnauthorized, http.StatusText(http.StatusUnauthorized))
}
// share data between middlewares and handle.
ctx.WithValue("user", user)
return next(ctx)
}
}
auth := func(ctx *clevergo.Context) error {
ctx.WriteString(fmt.Sprintf("hello %v", ctx.Value("user")))
return nil
}
router.Get("/auth", auth, RouteMiddleware(
// middleware for current route.
authenticator,
))
http.ListenAndServe(":8080", router)Middleware also can be used in route group, see Route Group for details.
router := clevergo.NewRouter()
api := router.Group("/api", clevergo.RouteGroupMiddleware(
// middlewares for APIs, such as CORS, authenticator, authorization
clevergo.WrapHH(cors.Default().Handler), // https://github.com/rs/cors
))
apiV1 := api.Group("/v1", clevergo.RouteGroupMiddleware(
// middlewares for v1's APIs
))
apiV2 := api.Group("/v2", clevergo.RouteGroupMiddleware(
// middlewares for v2's APIs
))router.Get("/users", queryUsers)
router.Post("/users", createUser)
router.Get("/users/:id", queryUser)
router.Put("/users/:id", updateUser)
router.Delete("/users/:id", deleteUser)See Route Group for versioning your APIs.
func (ctx *clevergo.Context) error {
// equals to ctx.IsMethod(http.MethodGet).
if ctx.IsGet() {
}
// other shortcuts:
//ctx.IsDelete()
//ctx.IsPatch()
//ctx.IsPost()
//ctx.IsPut()
//ctx.IsOptions()
//ctx.IsAJAX()
return nil
}- Give it a ⭐ and spread the package.
- File an issue to ask questions, request features or report bugs.
- Fork and make a pull request.
This project exists thanks to all the people who contribute. [Contribute].
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See CREDIT.md.
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