diff --git a/core/plugins/plugin.qq.com.go b/core/plugins/plugin.qq.com.go
index 394fdd7..77e5c1a 100644
--- a/core/plugins/plugin.qq.com.go
+++ b/core/plugins/plugin.qq.com.go
@@ -122,13 +122,6 @@ func (p *QqPlugin) handleWechatRequest(r *http.Request, ctx *goproxy.ProxyCtx) (
 		return r, p.buildEmptyResponse(r)
 	}
 
-	isAll, _ := p.bridge.GetResType("all")
-	isClassify, _ := p.bridge.GetResType("video")
-
-	if !isAll && !isClassify {
-		return r, p.buildEmptyResponse(r)
-	}
-
 	go p.handleMedia(body)
 
 	return r, p.buildEmptyResponse(r)
@@ -188,6 +181,17 @@ func (p *QqPlugin) handleMedia(body []byte) {
 		res.ContentType = "image/png"
 	}
 
+	isAll, _ := p.bridge.GetResType("all")
+	isImage, _ := p.bridge.GetResType("image")
+	if res.Classify == "image" && !isImage && !isAll {
+		return
+	}
+
+	isVideo, _ := p.bridge.GetResType("video")
+	if res.Classify == "video" && !isVideo && !isAll {
+		return
+	}
+
 	if urlToken, ok := firstMedia["urlToken"].(string); ok {
 		res.Url += urlToken
 	}
diff --git a/core/resource.go b/core/resource.go
index 1ea24ec..cbe115a 100644
--- a/core/resource.go
+++ b/core/resource.go
@@ -59,8 +59,8 @@ func (r *Resource) markMedia(key string) {
 
 func (r *Resource) getResType(key string) (bool, bool) {
 	r.resTypeMux.RLock()
-	defer r.resTypeMux.RUnlock()
 	value, ok := r.resType[key]
+	r.resTypeMux.RUnlock()
 	return value, ok
 }
 
@@ -233,10 +233,15 @@ func (r *Resource) decodeWxFile(fileName, decodeStr string) error {
 
 	byteCount := len(decodedBytes)
 	fileBytes := make([]byte, byteCount)
-	_, err = file.Read(fileBytes)
+	n, err := file.Read(fileBytes)
 	if err != nil && err != io.EOF {
 		return err
 	}
+
+	if n < byteCount {
+		byteCount = n
+	}
+
 	xorResult := make([]byte, byteCount)
 	for i := 0; i < byteCount; i++ {
 		xorResult[i] = decodedBytes[i] ^ fileBytes[i]