diff --git a/example/main.go b/example/main.go
index 5f5842e..e56d1e8 100644
--- a/example/main.go
+++ b/example/main.go
@@ -5,19 +5,30 @@ import (
 	"flag"
 	"fmt"
 	"git.diulo.com/mogfee/kit"
-	user "git.diulo.com/mogfee/kit/api"
-	"git.diulo.com/mogfee/kit/example/service"
-	"git.diulo.com/mogfee/kit/middleware/jwt"
-	"git.diulo.com/mogfee/kit/middleware/logging"
-	"git.diulo.com/mogfee/kit/middleware/validate"
 	"git.diulo.com/mogfee/kit/transport/http"
+	http2 "net/http"
 )
 
 var host string
 
 func init() {
-	flag.StringVar(&host, "h", "localhost:9093", "")
+	flag.StringVar(&host, "h", "localhost:9922", "")
 }
+
+type cros struct {
+	h http2.Handler
+}
+
+func (c *cros) ServeHTTP(writer http2.ResponseWriter, request *http2.Request) {
+	request.Header.Set("Access-Control-Allow-Origin", "*")
+	request.Header.Set("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,PATCH,DELETE")
+	request.Header.Set("Access-Control-Allow-Credentials", "true")
+	request.Header.Set("Access-Control-Allow-Headers", "Content-Type,X-Requested-With,Access-Control-Allow-Credentials,User-Agent,Content-Length,Authorization")
+	request.Header.Set("xxxxx", "11")
+	fmt.Println("xxx")
+	c.h.ServeHTTP(writer, request)
+}
+
 func main() {
 	flag.Parse()
 	runApp(host)
@@ -25,32 +36,37 @@ func main() {
 func runApp(host string) {
 	hs := http.NewServer(
 		http.Address(host),
-		http.Middleware(
-			logging.Server(),
-			validate.Server(),
-			jwt.JWT(),
-		),
+		//http.Middleware(
+		//logging.Server(),
+		//validate.Server(),
+		//jwt.JWT(),
+		//),
+		http.Filter(func(handler http2.Handler) http2.Handler {
+			return &cros{
+				h: handler,
+			}
+		}),
 	)
-	//route := hs.Route("/")
-	//route.GET("/", func(ctx http.Context) error {
-	//	in := UserAddRequest{Name: "tom"}
-	//	http.SetOperation(ctx, "/api/abc")
-	//	h := ctx.Middleware(func(ctx context.Context, a any) (any, error) {
-	//		return AddUser(ctx, a.(*UserAddRequest))
-	//	})
-	//	if tr, ok := transport.FromServerContext(ctx); ok {
-	//		fmt.Println(tr.Operation())
-	//	}
-	//	out, err := h(ctx, &in)
-	//	if err != nil {
-	//		return err
-	//	}
-	//	reply, _ := out.(*UserAddResponse)
-	//	reply.Id = host
-	//	return ctx.Result(200, reply)
-	//})
+	route := hs.Route("/")
+	route.HEAD("/api/v1/answer/listCategory", func(ctx http.Context) error {
+		in := UserAddRequest{Name: "tom"}
+		http.SetOperation(ctx, "/api/abc")
+		h := ctx.Middleware(func(ctx context.Context, a any) (any, error) {
+			return AddUser(ctx, a.(*UserAddRequest))
+		})
+		//if tr, ok := transport.FromServerContext(ctx); ok {
+		//	fmt.Println(tr.Operation())
+		//}
+		out, err := h(ctx, &in)
+		if err != nil {
+			return err
+		}
+		reply, _ := out.(*UserAddResponse)
+		reply.Id = host
+		return ctx.Result(200, reply)
+	})
 
-	user.RegisterUserHTTPServer(hs, &service.UserService{})
+	//user.RegisterUserHTTPServer(hs, &service.UserService{})
 	//client, err := clientv3.New(clientv3.Config{
 	//	Endpoints: []string{"127.0.0.1:2379"},
 	//})
@@ -76,8 +92,8 @@ type UserAddResponse struct {
 }
 
 func AddUser(ctx context.Context, request *UserAddRequest) (*UserAddResponse, error) {
-	fmt.Println(jwt.FromUserContext(ctx))
-	fmt.Println(jwt.FromAuthKeyContext(ctx))
+	//fmt.Println(jwt.FromUserContext(ctx))
+	//fmt.Println(jwt.FromAuthKeyContext(ctx))
 	return &UserAddResponse{Id: request.Name}, nil
 	//errors.New(500, "xx", "")
 }
diff --git a/go.mod b/go.mod
index f2b5836..0cba202 100644
--- a/go.mod
+++ b/go.mod
@@ -18,7 +18,6 @@ require (
 	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
diff --git a/middleware/jwt/jwt.go b/middleware/jwt/jwt.go
index f0ab65a..a01b013 100644
--- a/middleware/jwt/jwt.go
+++ b/middleware/jwt/jwt.go
@@ -101,5 +101,9 @@ func SetAuthKeyContext(ctx context.Context, key string) context.Context {
 	return context.WithValue(ctx, authKey{}, key)
 }
 func FromAuthKeyContext(ctx context.Context) string {
-	return ctx.Value(authKey{}).(string)
+	v := ctx.Value(authKey{})
+	if v == nil {
+		return ""
+	}
+	return v.(string)
 }
diff --git a/transport/http/context.go b/transport/http/context.go
index 329ae35..8f932fd 100644
--- a/transport/http/context.go
+++ b/transport/http/context.go
@@ -158,6 +158,10 @@ func (w *wrapper) Returns(i interface{}, err error) error {
 
 func (w *wrapper) Result(i int, i2 interface{}) error {
 	w.w.WriteHeader(i)
+	w.res.Header().Set("Access-Control-Allow-Origin", "*")
+	w.res.Header().Set("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,PATCH,DELETE")
+	w.res.Header().Set("Access-Control-Allow-Credentials", "true")
+	w.res.Header().Set("Access-Control-Allow-Headers", "Content-Type,X-Requested-With,Access-Control-Allow-Credentials,User-Agent,Content-Length,Authorization")
 	return w.router.srv.enc(&w.w, w.req, i2)
 }