问题可能是由于链接中存在非ASCII字符或非法字符而导致的。要解决此问题，您可以使用以下代码：

DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url)); request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI); request.setAllowedOverRoaming(false); request.setTitle(name); request.setDescription(description); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);

String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(MimeTypeMap.getFileExtensionFromUrl(url)); if (mimeType != null) { request.setMimeType(mimeType); }

DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE); long downloadId = downloadManager.enqueue(request);

如果您遇到此问题，请尝试使用上述代码段更改下载请求并使用DownloadManager下载文件。