无法在POSTMan上获得Google oAuth 2令牌 [英] Could not obtain Google oAuth 2 token on POSTMan

问题描述

好吧，自其他问题（解决）仍然没有解决，我正在考虑使用POSTMan在客户端库的每个步骤上执行Trail和Error。

所以我阅读Google OAuth2的基本步骤再次创建了另一个OAuth 2 ID 开发人员控制台中的Api Manager>凭证和ID类型是Web应用程序，并将它们填充到POSTMan中：

1. POSTMAN，然后单击授权标签。


2. 选择类型为OAuth 2.0，然后选择为该URL添加令牌。


3. 验证网址： https://accounts.google.com/o/oauth2/v2/auth


4. 访问令牌网址： https://www.googleapis.com/oauth2/v4/token


5. 客户端ID：[我刚刚收到的客户端ID]


6. 客户秘密：[我刚收到的客户秘密]


7. 范围：[空]
   
8. 授予类型：授权码


9. 
   
10. 
    
11. POSTMAN回复我说：可以不完整的OAuth2.0登录

我错过了什么？

（Google重定向URI可以在此处找到）

（API范围可以在此处找到） p>

解决方案

您只有在Google用户通过Google登录页面登录时才能获取访问令牌。

第1步：
Redirec t
https://accounts.google.com/o/oauth2/auth ？client_id = + GoogleClientID +& redirect_uri =+ Url.Encode（GoogleRedirectURL）+& response_type = code& scope = email

第2步：
现在你在谷歌登录页面，你会输入你的谷歌凭据。

第3步：
Google会将您重定向回您在Google Developer Console中配置的redirect_uri，您可以从QueryString中获取代码

第4步：
现在您将表单发布到 https://www.googleapis.com/oauth2/v4/token
with client_id，client_secret，redirect_uri，代码（您在步骤3中获得）以及grant_type = authorization_code

结果：您现在应该收到来自Google的access_token

Well, since the Other problem(solved) remain unsolved, I was thinking to use POSTMan to do Trail and Error on each steps that the Client library will do.

So I read the Basic steps of Google OAuth2 again, created another OAuth 2 ID at Api Manager > Credentials in Dev Console and ID type is Web Application, and filled them into the POSTMan:

1. New tab in POSTMan, then click the Authorization label.
2. Choose type as OAuth 2.0 and select "Add token to the url"
3. Auth URL: https://accounts.google.com/o/oauth2/v2/auth
4. Access Token URL: https://www.googleapis.com/oauth2/v4/token
5. Client ID: [the Client ID that I just received]
6. Client Secret: [the Client secret that I just received]
7. Scope: [empty]
8. Grant Type: Authorization Code
9. Request access token locally: Selected
10. Click "Request Token"
11. POSTMan replied me: "Could not complete OAuth2.0 login"

Do I missed something?

(Google redirect URI could be found here)

(API scope could be found here)

解决方案

You get access Token only when a Google User Logs in through the google signin page.

Step 1: Redirect https://accounts.google.com/o/oauth2/auth?client_id=" + GoogleClientID + "&redirect_uri=" + Url.Encode(GoogleRedirectURL) + "&response_type=code&scope=email"

Step 2: Now you are on google signin page and you would enter your google credentials.

Step 3 : Google will redirect you back to the redirect_uri that you have configured in the Google Developer Console and you can get the "code" from the QueryString

Step 4: Now you post a form to https://www.googleapis.com/oauth2/v4/token with client_id, client_secret, redirect_uri, code(you obtained in Step 3), and the grant_type=authorization_code

Result: You should now receive the access_token from Google

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