当我一次选择多个文件（Image1 和 Image2）时，我只看到一个进度条，如下所示：
我的上传小部件看起来像这样
uploader = new Uploader();
uploader.addOnFinishUploadHandler(uploadHandler);
uploader.avoidRepeatFiles(true);
uploader.setAutoSubmit(true);
uploaderPanel.add(uploader);
progressBar = new ModalUploadStatus();
uploader.setStatusWidget(progressBar);
在服务器端，我没有使用任何自定义 servlet。有什么建议么 ？
我正在使用 GWTupload 1.0.1 和 GWT 2.4.0
编辑
上传者似乎将这两个文件作为一个包上传。这是我在上传过程中得到的日志：
INFO: server response transferred 14/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 14/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:55 EDT 2015 Gwt client Uploader
INFO: server response transferred 26/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 26/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:55 EDT 2015 Gwt client Uploader
INFO: server response transferred 33/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 33/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:56 EDT 2015 Gwt client Uploader
INFO: server response transferred 44/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 44/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:56 EDT 2015 Gwt client Uploader
INFO: server response transferred 52/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 52/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:57 EDT 2015 Gwt client Uploader
INFO: server response transferred 63/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 63/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:57 EDT 2015 Gwt client Uploader
INFO: server response transferred 70/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 70/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:58 EDT 2015 Gwt client Uploader
INFO: server response transferred 81/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 81/1407 [Image1.jpg, Image2.jpg]
INFO: Mon Jun 01 10:39:58 EDT 2015 Gwt client Uploader
INFO: server response transferred 89/1407 [Image1.jpg, Image2.jpg]
INFO: server response transferred 89/1407 [Image1.jpg, Image2.jpg]
...