refreshToken为null [英] refreshToken is null

问题描述

我使用DREdit应用程序的Oauth代码为我的应用程序获取accessToken和refreshToken，并且我获取accessToken，但refreshToken始终为空。

I used DREdit app's Oauth code to get accessToken and refreshToken for my app and i am getting the accessToken but refreshToken is coming null always.

我尝试在下面的代码中打印这些值

I tried to print the values in the code which comes like below

authorization URL:https://accounts.google.com/o/oauth2/auth?access_type=offline&approval_prompt=force&client_id=651991573332.apps.googleusercontent.com&redirect_uri=http://www.sakshum.org/GoogleOauth&response_type=code&scope=https://www.googleapis.com/auth/drive.file%20https://www.googleapis.com/auth/userinfo.email%20https://www.googleapis.com/auth/userinfo.profile

这段代码已经有access_type = offline，我发现它没有在url中在某些情况下是原因。请告知还有什么可能是错误的。

This code already has access_type=offline which I found not having in the url was the cause in some cases. Please advise what else could be wrong here.

日志打印如下appEngine

The log prints as follows on appEngine

[s~sakshumweb-hrd/3.368699522239285323].<stdout>: Code:4/XQ1sR1Pu5VHDqGbG9iJO10bXVCCE.Qn-L1XwrBVYaEnp6UAPFm0EmSoCXfwI

W 2013-07-10 20:20:16.294
com.google.api.client.googleapis.services.AbstractGoogleClient <init>: Application name is not set. Call Builder#setApplicationName.
I 2013-07-10 20:20:16.536
[s~sakshumweb-hrd/3.368699522239285323].<stdout>: id:113470899999229420779

I 2013-07-10 20:20:17.936
[s~sakshumweb-hrd/3.368699522239285323].<stdout>: access token:ya29.AHES6ZSP7MXaaUhMz4RO7Jm3Zkh_s1zUxJyzW_6IvfADaQ

I 2013-07-10 20:20:17.936
[s~sakshumweb-hrd/3.368699522239285323].<stdout>: refresh token:null

推荐答案

在您的链接之后，您将获得授权码。例如：

After your link you get authorization code. For instance:

https://accounts.google.com/o/oauth2/auth?access_type=offline
&approval_prompt=auto
&client_id=[your id]
&redirect_uri=[url]
&response_type=code
&scope=[access scopes]
&state=/profile

然后如果将来您将有权访问驱动器你需要刷新令牌（你可以每次请求认证令牌 - 重定向到谷歌等等，但这不是好的方式。在第一次使用后，你应该将数据库中的凭证保存为用户UID（例如，它可能是邮件）。因此，如果您需要访问该功能中的驱动器，请执行以下操作：

then if in future you are going to have access to drive you need refresh token (you can every time request auth token - redirecting to google and etc... but it's not good way. after first usage, you should save Credentials in Database with User UID (for instance, it may be mail). So if you need to have access to the drive in the feature you do this:

static Credential exchangeCode(String authorizationCode)
      throws CodeExchangeException {
    try {
      GoogleAuthorizationCodeFlow flow = getFlow();
      GoogleTokenResponse response =
          flow.newTokenRequest(authorizationCode).setRedirectUri(REDIRECT_URI).execute();
      return flow.createAndStoreCredential(response, null);
    } catch (IOException e) {
      System.err.println("An error occurred: " + e);
      throw new CodeExchangeException(null);
    }
  }

正如我猜你也想得到该文件位于Google云端硬盘中。当您收到文件时 - 您的文档，则可以在com.google中找到下载方法.api.services.drive.model.File对象。阅读文档

As I guess you also want to get url of the file which is in the Google Drive. when you get files - thee the documentation, then you will find download methids in com.google.api.services.drive.model.File object. read documentations

这篇关于refreshToken为null的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！