diff --git a/flutter/clipboard/lib/main.dart b/flutter/clipboard/lib/main.dart
index a86707935..920ac6798 100644
--- a/flutter/clipboard/lib/main.dart
+++ b/flutter/clipboard/lib/main.dart
@@ -727,20 +727,6 @@ class _HomePageState extends State<HomePage> {
       if (fileCount == 0) {
         throw Exception('No file to copy');
       }
-      if (fileCount == 1) {
-        final fileName =
-            utf8.decode(response.headers['file-name']![0].codeUnits);
-        // var file = File('$downloadDir/$fileName');
-        String filePath;
-        if (hasImageExtension(fileName)) {
-          filePath = '$imageDir/$fileName';
-        } else {
-          filePath = '$downloadDir/$fileName';
-        }
-        var file = File(filePath);
-        await response.pipe(file.openWrite());
-        return "已保存到: $filePath";
-      }
       var body = await response.transform(utf8.decoder).join();
       var fileNames = body.split('\n');
       return await _downloadFiles(serverConfig, fileNames);
@@ -761,9 +747,11 @@ class _HomePageState extends State<HomePage> {
         continue;
       }
       final url = Uri.parse(serverConfig.downloadUrl);
-      final request = await client.postUrl(url);
+      final request = await client.getUrl(url);
       request.headers.set('time-ip', serverConfig.generateTimeipHeadHex());
-      request.add(utf8.encode(winFilePath));
+      final body = utf8.encode(winFilePath);
+      request.headers.add('Content-Length', body.length);
+      request.add(body);
       String filePath;
       winFilePath = winFilePath.replaceAll('\\', '/');
       var fileName = winFilePath.split('/').last;
diff --git a/go/main.go b/go/main.go
index faa0f57e5..7a697e0db 100644
--- a/go/main.go
+++ b/go/main.go
@@ -43,7 +43,7 @@ func main() {
 	route.POST("/copy", copyHandler)
 	route.POST("/paste", pasteHandler)
 	route.POST("/ping", pingHandler)
-	route.POST("/download", downloadHandler)
+	route.GET("/download", downloadHandler)
 	go func() {
 		err := route.RunTLS(":"+GloballCnf.ServerPort, certFile, keyFile)
 		if err != nil {
diff --git a/go/route.go b/go/route.go
index c3f7f2fe2..d103e42a0 100644
--- a/go/route.go
+++ b/go/route.go
@@ -82,8 +82,6 @@ func commonAuth(c *gin.Context) bool {
 	} else {
 		myipv4 = c.Request.Host
 	}
-	fmt.Println("myipv4: ", myipv4)
-	fmt.Println("ip: ", ip)
 	if ip != myipv4 {
 		logrus.Error("ip not match: ", ip)
 		c.String(401, ErrorInvalidAuthData+": ip not match, "+ip+" != "+myipv4)
@@ -96,13 +94,6 @@ func sendFiles(c *gin.Context) error {
 	c.Header("data-type", "files")
 	c.Header("file-count", fmt.Sprintf("%d", len(SelectedFiles)))
 	//c.Header("Content-Type", "application/octet-stream")
-	if len(SelectedFiles) == 1 {
-		fileName := filepath.Base(SelectedFiles[0])
-		c.Writer.Header().Add("file-name", fileName)
-		c.File(SelectedFiles[0])
-		return nil
-	}
-	// 多个文件
 	body := strings.Join(SelectedFiles, "\n")
 	c.String(200, body)
 	return nil
@@ -121,6 +112,10 @@ func downloadHandler(c *gin.Context) {
 		c.String(500, ErrorInternal+": "+err.Error())
 		return
 	}
+	if len(filePath) == 0 {
+		c.String(400, ErrorInvalidData+": file path is empty")
+		return
+	}
 	filename := filepath.Base(string(filePath))
 	c.Header("file-name", filename)
 	c.File(string(filePath))