[WIP]Add parse headers info (#805)

* Add parse headers info

* Update parse headers info

rest/httpx/requests.go

@@ -12,6 +12,7 @@ import (
 const (
 	formKey           = "form"
 	pathKey           = "path"
+	headerKey         = "header"
 	emptyJson         = "{}"
 	maxMemory         = 32 << 20 // 32MB
 	maxBodyLen        = 8 << 20  // 8MB
@@ -20,8 +21,9 @@ const (
 )
 
 var (
-	formUnmarshaler = mapping.NewUnmarshaler(formKey, mapping.WithStringValues())
-	pathUnmarshaler = mapping.NewUnmarshaler(pathKey, mapping.WithStringValues())
+	formUnmarshaler   = mapping.NewUnmarshaler(formKey, mapping.WithStringValues())
+	pathUnmarshaler   = mapping.NewUnmarshaler(pathKey, mapping.WithStringValues())
+	headerUnmarshaler = mapping.NewUnmarshaler(headerKey, mapping.WithStringValues())
 )
 
 // Parse parses the request.
@@ -34,9 +36,28 @@ func Parse(r *http.Request, v interface{}) error {
 		return err
 	}
 
+	if err := ParseHeaders(r, v); err != nil {
+		return err
+	}
+
 	return ParseJsonBody(r, v)
 }
 
+// ParseHeaders parses the headers request.
+func ParseHeaders(r *http.Request, v interface{}) error {
+	m := map[string]interface{}{}
+	for k, v := range r.Header {
+		k = strings.ToLower(k)
+		if len(v) == 1 {
+			m[k] = v[0]
+		} else {
+			m[k] = v
+		}
+	}
+
+	return headerUnmarshaler.Unmarshal(m, v)
+}
+
 // ParseForm parses the form request.
 func ParseForm(r *http.Request, v interface{}) error {
 	if err := r.ParseForm(); err != nil {