我想使用下面提到的代码从谷歌驱动器下载文件。 我已经成功地测试了插入文件,删除文件上传文件等其他方法,但是当试图下载文件时,我在下面的代码中的HttpResponse response = request.execute()处收到401授权错误。谷歌驱动器文件下载
private static synchronized InputStream downloadFile(Drive service, File file) throws IOException
{
//File file = service.files().get(fileId).execute();
String fileURL = file.getDownloadUrl();
GenericUrl genericUrl = new GenericUrl(fileURL);
if (fileURL != null && fileURL.length() > 0)
{
try {
HttpRequest request = service.getRequestFactory().buildGetRequest(genericUrl);
HttpResponse response = request.execute();
InputStream inStream = response.getContent();
//HttpResponse resp = service.getRequestFactory().buildGetRequest(url).execute();
System.out.println("content "+ inStream);
return inStream;
} catch (IOException e) {
// An error occurred.
e.printStackTrace();
System.out.println("downloadFile error :"+ e.getMessage());
return null;
}
} else {
// The file doesn't have any content stored on Drive.
return null;
}
}
我也曾尝试使用异步执行,我仍然得到401错误
08-30 19:31:13.917: W/System.err(1585): com.google.api.client.http.HttpResponseException: 401 Unauthorized
08-30 19:31:13.925: W/System.err(1585): at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:978)
08-30 19:31:13.935: W/System.err(1585): at com.rise.risedrive.RiseDriveActivity$DownloadFile.doInBackground(RiseDriveActivity.java:112)
08-30 19:31:13.945: W/System.err(1585): at com.rise.risedrive.RiseDriveActivity$DownloadFile.doInBackground(RiseDriveActivity.java:1)
08-30 19:31:13.955: W/System.err(1585): at android.os.AsyncTask$2.call(AsyncTask.java:185)
08-30 19:31:13.955: W/System.err(1585): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
08-30 19:31:13.965: W/System.err(1585): at java.util.concurrent.FutureTask.run(FutureTask.java:138)
08-30 19:31:13.965: W/System.err(1585): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
08-30 19:31:13.975: W/System.err(1585): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
08-30 19:31:13.975: W/System.err(1585): at java.lang.Thread.run(Thread.java:1019)
08-30 19:31:32.250: W/jdwp(1585): Debugger is telling the VM to exit with code=1
08-30 19:31:32.250: I/dalvikvm(1585): GC lifetime allocation: 2603 bytes
我试图调试它,但不能 帮我提前
解决这个谢谢
你能打印错误信息吗?你可以找到更多关于如何从这个[页面](https://developers.google.com/drive/handle-errors#catching_exceptions_with_client_libraries)发现错误的信息。凭据可能已过期,或者用户可能已撤销对您的应用程序的访问权限。 – Alain