diff --git a/app/net.go b/app/net.go
index 32860c8..0a9674b 100644
--- a/app/net.go
+++ b/app/net.go
@@ -13,6 +13,11 @@ type Convertor[V any] func(s string) (V, error)
 type HandlerFunc func(w *ResponseWriter, r *Request)
 type ParamGetter func(key string) (string, bool)
 
+// Binder 参数绑定接口
+type Binder interface {
+	Bind(r *Request) error
+}
+
 func GetParam[V any](r *Params, key string, def V, convertor Convertor[V], taps []TapFunc[V]) V {
 	var v V
 	if str, ok := r.Get(key); ok {
@@ -35,7 +40,7 @@ type Params struct {
 }
 
 func NewParams(pg ParamGetter) *Params {
-	return &Params{pg }
+	return &Params{pg}
 }
 
 func NewPathParams(r *Request) *Params {
@@ -101,7 +106,7 @@ func (u *Params) Uint(key string, def uint, taps ...TapFunc[uint]) uint {
 
 func (u *Params) Uint32(key string, def uint32, taps ...TapFunc[uint32]) uint32 {
 	return GetParam[uint32](u, key, def, func(s string) (uint32, error) {
-		n,e := strconv.ParseUint(s, 10, 64)
+		n, e := strconv.ParseUint(s, 10, 64)
 		return uint32(n), e
 	}, taps)
 }
@@ -125,11 +130,10 @@ func (u *Params) Float64(key string, def float64, taps ...TapFunc[float64]) floa
 	}, taps)
 }
 
-
 type Request struct {
 	*http.Request
 	*Params
-	pathParams *Params
+	pathParams  *Params
 	queryParams *Params
 }
 
@@ -183,15 +187,15 @@ func (r *Request) QueryParams() *Params {
 
 type ResponseWriter struct {
 	http.ResponseWriter
-	mutex  sync.RWMutex
-	sent   bool
+	mutex sync.RWMutex
+	sent  bool
 }
 
 func NewResponseWriter(w http.ResponseWriter) *ResponseWriter {
 	return &ResponseWriter{
 		ResponseWriter: w,
-		mutex: sync.RWMutex{},
-		sent: false,
+		mutex:          sync.RWMutex{},
+		sent:           false,
 	}
 }
 
@@ -265,4 +269,3 @@ func Handler(hf HandlerFunc) http.HandlerFunc {
 		hf(NewResponseWriter(w), NewRequest(r))
 	}
 }
-