diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index b1e35bb35..a30c65303 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -36,12 +36,6 @@ jobs:
         go build ./...
         go test ./...
 
-    - name: Errors
-      run: |
-        cd cmd/protoc-gen-go-errors
-        go build ./...
-        go test ./...
-
     - name: Examples
       run: |
         cd examples
diff --git a/api/metadata/metadata_http.pb.go b/api/metadata/metadata_http.pb.go
index 55eeb3647..d4f6f3d1a 100644
--- a/api/metadata/metadata_http.pb.go
+++ b/api/metadata/metadata_http.pb.go
@@ -26,64 +26,11 @@ type MetadataHandler interface {
 }
 
 func NewMetadataHandler(srv MetadataHandler, opts ...http1.HandleOption) http.Handler {
-	h := http1.DefaultHandleOptions()
-	for _, o := range opts {
-		o(&h)
-	}
 	r := mux.NewRouter()
 
-	r.HandleFunc("/services", func(w http.ResponseWriter, r *http.Request) {
-		var in ListServicesRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
+	r.Handle("/services", http1.NewHandler(srv.ListServices, opts...)).Methods("GET")
 
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.ListServices(ctx, req.(*ListServicesRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*ListServicesReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("GET")
-
-	r.HandleFunc("/services/{name}", func(w http.ResponseWriter, r *http.Request) {
-		var in GetServiceDescRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		if err := binding.MapProto(&in, mux.Vars(r)); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.GetServiceDesc(ctx, req.(*GetServiceDescRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*GetServiceDescReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("GET")
+	r.Handle("/services/{name}", http1.NewHandler(srv.GetServiceDesc, opts...)).Methods("GET")
 
 	return r
 }
diff --git a/cmd/protoc-gen-go-errors/errors.go b/cmd/protoc-gen-go-errors/errors.go
deleted file mode 100644
index 081b132eb..000000000
--- a/cmd/protoc-gen-go-errors/errors.go
+++ /dev/null
@@ -1,58 +0,0 @@
-package main
-
-import (
-	pb "github.com/go-kratos/kratos/v2/api/kratos/api"
-
-	"google.golang.org/protobuf/compiler/protogen"
-	"google.golang.org/protobuf/proto"
-)
-
-const (
-	errorsPackage = protogen.GoImportPath("github.com/go-kratos/kratos/v2/errors")
-)
-
-// generateFile generates a _http.pb.go file containing kratos errors definitions.
-func generateFile(gen *protogen.Plugin, file *protogen.File) *protogen.GeneratedFile {
-	if len(file.Enums) == 0 {
-		return nil
-	}
-	filename := file.GeneratedFilenamePrefix + "_errors.pb.go"
-	g := gen.NewGeneratedFile(filename, file.GoImportPath)
-	g.P("// Code generated by protoc-gen-go-errors. DO NOT EDIT.")
-	g.P()
-	g.P("package ", file.GoPackageName)
-	g.P()
-	generateFileContent(gen, file, g)
-	return g
-}
-
-// generateFileContent generates the kratos errors definitions, excluding the package statement.
-func generateFileContent(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile) {
-	if len(file.Enums) == 0 {
-		return
-	}
-
-	g.P("// This is a compile-time assertion to ensure that this generated file")
-	g.P("// is compatible with the kratos package it is being compiled against.")
-	g.P("const _ = ", errorsPackage.Ident("SupportPackageIsVersion1"))
-	g.P()
-	for _, enum := range file.Enums {
-		genErrorsReason(gen, file, g, enum)
-	}
-}
-
-func genErrorsReason(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, enum *protogen.Enum) {
-	err := proto.GetExtension(enum.Desc.Options(), pb.E_Errors)
-	if ok := err.(bool); !ok {
-		return
-	}
-	var ew errorWrapper
-	for _, v := range enum.Values {
-		err := &errorInfo{
-			Name:  string(enum.Desc.Name()),
-			Value: string(v.Desc.Name()),
-		}
-		ew.Errors = append(ew.Errors, err)
-	}
-	g.P(ew.execute())
-}
diff --git a/cmd/protoc-gen-go-errors/go.mod b/cmd/protoc-gen-go-errors/go.mod
deleted file mode 100644
index fbc26fe00..000000000
--- a/cmd/protoc-gen-go-errors/go.mod
+++ /dev/null
@@ -1,8 +0,0 @@
-module github.com/go-kratos/kratos/cmd/protoc-gen-go-errors/v2
-
-go 1.15
-
-require (
-	github.com/go-kratos/kratos/v2 v2.0.0-beta2
-	google.golang.org/protobuf v1.25.0
-)
diff --git a/cmd/protoc-gen-go-errors/go.sum b/cmd/protoc-gen-go-errors/go.sum
deleted file mode 100644
index 447a415b3..000000000
--- a/cmd/protoc-gen-go-errors/go.sum
+++ /dev/null
@@ -1,95 +0,0 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
-github.com/go-kratos/kratos/v2 v2.0.0-beta2 h1:KfYlxfXsjRiccGS1TVRKvXVuEnPJDwrrTSx5HtaOBlc=
-github.com/go-kratos/kratos/v2 v2.0.0-beta2/go.mod h1:hwEYWw8GFuJ8IoNt3T/3k+7kUfYt+h2fHDcyFlR1jBA=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
-github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
-github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
-github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
-github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
-github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
-github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.4 h1:L8R9j+yAqZuZjsqh/z+F1NCffTKKLShY6zXTItVIZ8M=
-github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
-github.com/imdario/mergo v0.3.6/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-go.opentelemetry.io/otel v0.18.0/go.mod h1:PT5zQj4lTsR1YeARt8YNKcFb88/c2IKoSABK9mX0r78=
-go.opentelemetry.io/otel/metric v0.18.0/go.mod h1:kEH2QtzAyBy3xDVQfGZKIcok4ZZFvd5xyKPfPcuK6pE=
-go.opentelemetry.io/otel/oteltest v0.18.0/go.mod h1:NyierCU3/G8DLTva7KRzGii2fdxdR89zXKH1bNWY7Bo=
-go.opentelemetry.io/otel/trace v0.18.0/go.mod h1:FzdUu3BPwZSZebfQ1vl5/tAa8LyMLXSJN57AXIt/iDk=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
-golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20210114201628-6edceaf6022f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
-google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
-google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
-google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
-google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
-google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
-google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
-google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/cmd/protoc-gen-go-errors/main.go b/cmd/protoc-gen-go-errors/main.go
deleted file mode 100644
index 7eab8c54e..000000000
--- a/cmd/protoc-gen-go-errors/main.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-
-	"google.golang.org/protobuf/compiler/protogen"
-	"google.golang.org/protobuf/types/pluginpb"
-)
-
-const version = "v2.0.0-beta4"
-
-func main() {
-	showVersion := flag.Bool("version", false, "print the version and exit")
-	flag.Parse()
-	if *showVersion {
-		fmt.Printf("protoc-gen-go-errors %v\n", version)
-		return
-	}
-
-	var flags flag.FlagSet
-
-	protogen.Options{
-		ParamFunc: flags.Set,
-	}.Run(func(gen *protogen.Plugin) error {
-		gen.SupportedFeatures = uint64(pluginpb.CodeGeneratorResponse_FEATURE_PROTO3_OPTIONAL)
-		for _, f := range gen.Files {
-			if !f.Generate {
-				continue
-			}
-			generateFile(gen, f)
-		}
-		return nil
-	})
-}
diff --git a/cmd/protoc-gen-go-errors/template.go b/cmd/protoc-gen-go-errors/template.go
deleted file mode 100644
index 1d86bb1d2..000000000
--- a/cmd/protoc-gen-go-errors/template.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"text/template"
-)
-
-var errorsTemplate = `const (
-{{ range .Errors }}
-	Errors_{{.Value}} = "{{.Name}}_{{.Value}}"
-{{- end }}
-)
-
-{{ range .Errors }}
-
-func Is{{.Value}}(err error) bool {
-	return errors.Reason(err) == Errors_{{.Value}}
-}
-{{- end }}
-`
-
-type errorInfo struct {
-	Name  string
-	Value string
-}
-type errorWrapper struct {
-	Errors []*errorInfo
-}
-
-func (e *errorWrapper) execute() string {
-	buf := new(bytes.Buffer)
-	tmpl, err := template.New("errors").Parse(errorsTemplate)
-	if err != nil {
-		panic(err)
-	}
-	if err := tmpl.Execute(buf, e); err != nil {
-		panic(err)
-	}
-	return string(buf.Bytes())
-}
diff --git a/cmd/protoc-gen-go-http/template.go b/cmd/protoc-gen-go-http/template.go
index add156dd7..d487252e2 100644
--- a/cmd/protoc-gen-go-http/template.go
+++ b/cmd/protoc-gen-go-http/template.go
@@ -14,40 +14,9 @@ type {{.ServiceType}}Handler interface {
 }
 
 func New{{.ServiceType}}Handler(srv {{.ServiceType}}Handler, opts ...http1.HandleOption) http.Handler {
-	h := http1.DefaultHandleOptions()
-	for _, o := range opts {
-		o(&h)
-	}
 	r := mux.NewRouter()
 	{{range .Methods}}
-	r.HandleFunc("{{.Path}}", func(w http.ResponseWriter, r *http.Request) {
-		var in {{.Request}}
-		if err := h.Decode(r, &in{{.Body}}); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		{{if ne (len .Vars) 0}}
-		if err := binding.MapProto(&in, mux.Vars(r)); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		{{end}}
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.{{.Name}}(ctx, req.(*{{.Request}}))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*{{.Reply}})
-		if err := h.Encode(w, r, reply{{.ResponseBody}}); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("{{.Method}}")
+	r.Handle("{{.Path}}", http1.NewHandler(srv.{{.Name}}, opts...)).Methods("{{.Method}}")
 	{{end}}
 	return r
 }
diff --git a/examples/blog/api/blog/v1/blog_http.pb.go b/examples/blog/api/blog/v1/blog_http.pb.go
index 6d51691c0..e73adf3c5 100644
--- a/examples/blog/api/blog/v1/blog_http.pb.go
+++ b/examples/blog/api/blog/v1/blog_http.pb.go
@@ -32,146 +32,17 @@ type BlogServiceHandler interface {
 }
 
 func NewBlogServiceHandler(srv BlogServiceHandler, opts ...http1.HandleOption) http.Handler {
-	h := http1.DefaultHandleOptions()
-	for _, o := range opts {
-		o(&h)
-	}
 	r := mux.NewRouter()
 
-	r.HandleFunc("/v1/article/", func(w http.ResponseWriter, r *http.Request) {
-		var in CreateArticleRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.CreateArticle(ctx, req.(*CreateArticleRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*CreateArticleReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("POST")
-
-	r.HandleFunc("/v1/article/{id}", func(w http.ResponseWriter, r *http.Request) {
-		var in UpdateArticleRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		if err := binding.MapProto(&in, mux.Vars(r)); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.UpdateArticle(ctx, req.(*UpdateArticleRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*UpdateArticleReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("PUT")
-
-	r.HandleFunc("/v1/article/{id}", func(w http.ResponseWriter, r *http.Request) {
-		var in DeleteArticleRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		if err := binding.MapProto(&in, mux.Vars(r)); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.DeleteArticle(ctx, req.(*DeleteArticleRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*DeleteArticleReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("DELETE")
-
-	r.HandleFunc("/v1/article/{id}", func(w http.ResponseWriter, r *http.Request) {
-		var in GetArticleRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		if err := binding.MapProto(&in, mux.Vars(r)); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.GetArticle(ctx, req.(*GetArticleRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*GetArticleReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("GET")
-
-	r.HandleFunc("/v1/article/", func(w http.ResponseWriter, r *http.Request) {
-		var in ListArticleRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.ListArticle(ctx, req.(*ListArticleRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		reply := out.(*ListArticleReply)
-		if err := h.Encode(w, r, reply); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("GET")
+	r.Handle("/v1/article/", http1.NewHandler(srv.CreateArticle, opts...)).Methods("POST")
+
+	r.Handle("/v1/article/{id}", http1.NewHandler(srv.UpdateArticle, opts...)).Methods("PUT")
+
+	r.Handle("/v1/article/{id}", http1.NewHandler(srv.DeleteArticle, opts...)).Methods("DELETE")
+
+	r.Handle("/v1/article/{id}", http1.NewHandler(srv.GetArticle, opts...)).Methods("GET")
+
+	r.Handle("/v1/article/", http1.NewHandler(srv.ListArticle, opts...)).Methods("GET")
 
 	return r
 }
diff --git a/examples/helloworld/helloworld/helloworld.pb.go b/examples/helloworld/helloworld/helloworld.pb.go
index 0ca50cfc2..5a158473e 100644
--- a/examples/helloworld/helloworld/helloworld.pb.go
+++ b/examples/helloworld/helloworld/helloworld.pb.go
@@ -1,13 +1,12 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.25.0
-// 	protoc        v3.13.0
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.14.0
 // source: helloworld.proto
 
 package helloworld
 
 import (
-	proto "github.com/golang/protobuf/proto"
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
@@ -22,10 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
 // The request message containing the user's name.
 type HelloRequest struct {
 	state         protoimpl.MessageState
diff --git a/examples/helloworld/helloworld/helloworld_http.pb.go b/examples/helloworld/helloworld/helloworld_http.pb.go
index 1b154608d..8199ede20 100644
--- a/examples/helloworld/helloworld/helloworld_http.pb.go
+++ b/examples/helloworld/helloworld/helloworld_http.pb.go
@@ -24,39 +24,9 @@ type GreeterHandler interface {
 }
 
 func NewGreeterHandler(srv GreeterHandler, opts ...http1.HandleOption) http.Handler {
-	h := http1.DefaultHandleOptions()
-	for _, o := range opts {
-		o(&h)
-	}
 	r := mux.NewRouter()
 
-	r.HandleFunc("/helloworld/{name}", func(w http.ResponseWriter, r *http.Request) {
-		var in HelloRequest
-
-		if err := binding.MapProto(&in, mux.Vars(r)); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.SayHello(ctx, req.(*HelloRequest))
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		if err := h.Encode(w, r, out); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("GET")
+	r.Handle("/helloworld/{name}", http1.NewHandler(srv.SayHello, opts...)).Methods("GET")
 
 	return r
 }
diff --git a/examples/http/handler/main.go b/examples/http/handler/main.go
new file mode 100644
index 000000000..c65ae9e0c
--- /dev/null
+++ b/examples/http/handler/main.go
@@ -0,0 +1,52 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/go-kratos/kratos/v2"
+	"github.com/go-kratos/kratos/v2/transport/http"
+	"github.com/gorilla/mux"
+)
+
+// User is a user model.
+type User struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}
+
+// UserService is a user service.
+type UserService struct{ users map[string]*User }
+
+// Get get a user from memory.
+func (u *UserService) Get(ctx context.Context, user *User) (*User, error) {
+	return u.users[user.ID], nil
+}
+
+// Add add a user to memory.
+func (u *UserService) Add(ctx context.Context, user *User) (*User, error) {
+	u.users[user.ID] = user
+	return user, nil
+}
+
+func main() {
+	us := &UserService{
+		users: make(map[string]*User),
+	}
+	router := mux.NewRouter()
+	router.Handle("/users", http.NewHandler(us.Add)).Methods("POST")
+	router.Handle("/users/{id}", http.NewHandler(us.Get)).Methods("GET")
+
+	httpSrv := http.NewServer(http.Address(":8000"))
+	httpSrv.HandlePrefix("/", router)
+
+	app := kratos.New(
+		kratos.Name("handler"),
+		kratos.Server(
+			httpSrv,
+		),
+	)
+	if err := app.Run(); err != nil {
+		log.Println(err)
+	}
+}
diff --git a/transport/http/binding/bind.go b/transport/http/binding/bind.go
index 7549c3637..580722ac5 100644
--- a/transport/http/binding/bind.go
+++ b/transport/http/binding/bind.go
@@ -16,3 +16,15 @@ func BindForm(req *http.Request, target interface{}) error {
 	}
 	return mapForm(target, req.Form)
 }
+
+// BindValue bind map parameters to target.
+func BindValue(vars map[string]string, target interface{}) error {
+	values := make(map[string][]string, len(vars))
+	for k, v := range vars {
+		values[k] = []string{v}
+	}
+	if msg, ok := target.(proto.Message); ok {
+		return mapProto(msg, values)
+	}
+	return mapForm(target, values)
+}
diff --git a/transport/http/binding/proto.go b/transport/http/binding/proto.go
index 60bc3817e..a56d693c5 100644
--- a/transport/http/binding/proto.go
+++ b/transport/http/binding/proto.go
@@ -18,6 +18,7 @@ import (
 )
 
 // MapProto sets a value in a nested Protobuf structure.
+// Deprecated: use BindValue instead.
 func MapProto(msg proto.Message, values map[string]string) error {
 	for key, value := range values {
 		if err := populateFieldValues(msg.ProtoReflect(), strings.Split(key, "."), []string{value}); err != nil {
diff --git a/transport/http/handle.go b/transport/http/handle.go
index 16c69b89e..271ca4bf7 100644
--- a/transport/http/handle.go
+++ b/transport/http/handle.go
@@ -1,14 +1,20 @@
 package http
 
 import (
+	"context"
+	"fmt"
 	"io/ioutil"
 	"net/http"
+	"reflect"
 
 	"github.com/go-kratos/kratos/v2/encoding"
 	"github.com/go-kratos/kratos/v2/encoding/json"
 	xhttp "github.com/go-kratos/kratos/v2/internal/http"
 	"github.com/go-kratos/kratos/v2/middleware"
+	"github.com/go-kratos/kratos/v2/middleware/recovery"
 	"github.com/go-kratos/kratos/v2/transport/http/binding"
+	"github.com/gorilla/mux"
+	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/encoding/protojson"
 )
@@ -26,64 +32,134 @@ type EncodeResponseFunc func(http.ResponseWriter, *http.Request, interface{}) er
 type EncodeErrorFunc func(http.ResponseWriter, *http.Request, error)
 
 // HandleOption is handle option.
-type HandleOption func(*HandleOptions)
-
-// HandleOptions is handle options.
-type HandleOptions struct {
-	Decode     DecodeRequestFunc
-	Encode     EncodeResponseFunc
-	Error      EncodeErrorFunc
-	Middleware middleware.Middleware
-}
-
-// DefaultHandleOptions returns a default handle options.
-func DefaultHandleOptions() HandleOptions {
-	return HandleOptions{
-		Decode: decodeRequest,
-		Encode: encodeResponse,
-		Error:  encodeError,
-	}
-}
+type HandleOption func(*Handler)
 
 // RequestDecoder with request decoder.
 func RequestDecoder(dec DecodeRequestFunc) HandleOption {
-	return func(o *HandleOptions) {
-		o.Decode = dec
+	return func(o *Handler) {
+		o.dec = dec
 	}
 }
 
 // ResponseEncoder with response encoder.
 func ResponseEncoder(en EncodeResponseFunc) HandleOption {
-	return func(o *HandleOptions) {
-		o.Encode = en
+	return func(o *Handler) {
+		o.enc = en
 	}
 }
 
 // ErrorEncoder with error encoder.
 func ErrorEncoder(en EncodeErrorFunc) HandleOption {
-	return func(o *HandleOptions) {
-		o.Error = en
+	return func(o *Handler) {
+		o.err = en
 	}
 }
 
 // Middleware with middleware option.
 func Middleware(m ...middleware.Middleware) HandleOption {
-	return func(o *HandleOptions) {
-		o.Middleware = middleware.Chain(m...)
+	return func(o *Handler) {
+		o.next = middleware.Chain(m...)
 	}
 }
 
+// Handler is handle options.
+type Handler struct {
+	method reflect.Value
+	in     reflect.Type
+	out    reflect.Type
+	dec    DecodeRequestFunc
+	enc    EncodeResponseFunc
+	err    EncodeErrorFunc
+	next   middleware.Middleware
+}
+
+// NewHandler new a HTTP handler.
+func NewHandler(handler interface{}, opts ...HandleOption) http.Handler {
+	if err := validateHandler(handler); err != nil {
+		panic(err)
+	}
+	typ := reflect.TypeOf(handler)
+	h := &Handler{
+		method: reflect.ValueOf(handler),
+		in:     typ.In(1).Elem(),
+		out:    typ.Out(0).Elem(),
+		dec:    decodeRequest,
+		enc:    encodeResponse,
+		err:    encodeError,
+		next:   recovery.Recovery(),
+	}
+	for _, o := range opts {
+		o(h)
+	}
+	return h
+}
+
+func (h *Handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	in := reflect.New(h.in).Interface()
+	if err := h.dec(req, in); err != nil {
+		h.err(w, req, err)
+		return
+	}
+	invoke := func(ctx context.Context, in interface{}) (interface{}, error) {
+		ret := h.method.Call([]reflect.Value{
+			reflect.ValueOf(ctx),
+			reflect.ValueOf(in),
+		})
+		if ret[1].IsNil() {
+			return ret[0].Interface(), nil
+		}
+		return nil, ret[1].Interface().(error)
+	}
+	if h.next != nil {
+		invoke = h.next(invoke)
+	}
+	out, err := invoke(req.Context(), in)
+	if err != nil {
+		h.err(w, req, err)
+		return
+	}
+	if err := h.enc(w, req, out); err != nil {
+		h.err(w, req, err)
+	}
+}
+
+func validateHandler(handler interface{}) error {
+	typ := reflect.TypeOf(handler)
+	if typ.NumIn() != 2 || typ.NumOut() != 2 {
+		return fmt.Errorf("invalid types, in: %d out: %d", typ.NumIn(), typ.NumOut())
+	}
+	if typ.In(1).Kind() != reflect.Ptr || typ.Out(0).Kind() != reflect.Ptr {
+		return fmt.Errorf("invalid types is not a pointer")
+	}
+	if !typ.In(0).Implements(reflect.TypeOf((*context.Context)(nil)).Elem()) {
+		return fmt.Errorf("input does not implement the context")
+	}
+	if !typ.Out(1).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
+		return fmt.Errorf("input does not implement the error")
+	}
+	return nil
+}
+
 // decodeRequest decodes the request body to object.
 func decodeRequest(req *http.Request, v interface{}) error {
 	subtype := xhttp.ContentSubtype(req.Header.Get(xhttp.HeaderContentType))
 	if codec := encoding.GetCodec(subtype); codec != nil {
 		data, err := ioutil.ReadAll(req.Body)
 		if err != nil {
-			return err
+			return status.Error(codes.InvalidArgument, err.Error())
+		}
+		if err := codec.Unmarshal(data, v); err != nil {
+			return status.Error(codes.InvalidArgument, err.Error())
+		}
+	} else {
+		if err := binding.BindForm(req, v); err != nil {
+			return status.Error(codes.InvalidArgument, err.Error())
 		}
-		return codec.Unmarshal(data, v)
 	}
-	return binding.BindForm(req, v)
+	if err := binding.BindValue(mux.Vars(req), v); err != nil {
+		return status.Error(codes.InvalidArgument, err.Error())
+	}
+	return nil
 }
 
 // encodeResponse encodes the object to the HTTP response.
diff --git a/transport/http/handle_test.go b/transport/http/handle_test.go
index e5049ffee..0165c97d7 100644
--- a/transport/http/handle_test.go
+++ b/transport/http/handle_test.go
@@ -2,10 +2,7 @@ package http
 
 import (
 	"context"
-	"net/http"
 	"testing"
-
-	"github.com/gorilla/mux"
 )
 
 type HelloRequest struct {
@@ -21,37 +18,7 @@ func (s *GreeterService) SayHello(ctx context.Context, req *HelloRequest) (*Hell
 	return &HelloReply{Message: "hello " + req.Name}, nil
 }
 
-func newGreeterHandler(srv *GreeterService, opts ...HandleOption) http.Handler {
-	h := DefaultHandleOptions()
-	for _, o := range opts {
-		o(&h)
-	}
-	r := mux.NewRouter()
-	r.HandleFunc("/helloworld", func(w http.ResponseWriter, r *http.Request) {
-		var in HelloRequest
-		if err := h.Decode(r, &in); err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		next := func(ctx context.Context, req interface{}) (interface{}, error) {
-			return srv.SayHello(ctx, &in)
-		}
-		if h.Middleware != nil {
-			next = h.Middleware(next)
-		}
-		out, err := next(r.Context(), &in)
-		if err != nil {
-			h.Error(w, r, err)
-			return
-		}
-		if err := h.Encode(w, r, out); err != nil {
-			h.Error(w, r, err)
-		}
-	}).Methods("POST")
-	return r
-}
-
 func TestHandler(t *testing.T) {
 	s := &GreeterService{}
-	_ = newGreeterHandler(s)
+	_ = NewHandler(s.SayHello)
 }