修复拍摄上传bug

components/My_upload/index.js

@@ -67,7 +67,7 @@ Component({
                 "classname": "system.attachment.huawei.OBS",
                 "method": "getFileName",
                 "content": {
-                    "filename": file.name.concat(Date.now(), ".").concat(ext),
+                    "filename": file.name ? file.name.concat(Date.now(), ".").concat(ext) : Date.now() + '.' + ext,
                     "filetype": ext,
                     "parentid": this.data.parentid
                 }