问题描述
我有一个应用引擎项目，我想访问我的谷歌云存储默认存储桶.获取 Credential 对象的第一步失败，在实时实例上执行以下操作:
I have an app engine project, I want to access my google cloud storage default bucket. The first step of getting a Credential object fails, doing the following on a live instance:
Credential creds = GoogleCredential.getApplicationDefault();
我收到的异常消息:
应用程序默认凭据不可用.如果在 Google Compute Engine 中运行，它们可用.否则，必须定义环境变量 GOOGLE_APPLICATION_CREDENTIALS 指向定义凭据的文件.请参阅 https://developers.google.com/accounts/docs/application-default-credentials 了解详情."
"The Application Default Credentials are not available. They are available if running in Google Compute Engine. Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining the credentials. See https://developers.google.com/accounts/docs/application-default-credentials for more information."
此处的文档说生产应用引擎项目应该有权访问默认凭据?:
The doc here says that production app engine projects should have access to the default credentials?:
https://developers.google.com/identity/protocols/application-default-credentials
3. 如果您在 Google App Engine 产品中运行，将使用与应用程序关联的内置服务帐户."
"3. If you are running in Google App Engine production, the built-in service account associated with the application will be used."
是不是我遗漏了一些设置?
Is there some setup I'm missing?
我的应用引擎版本(gradle):
My app engine version (gradle):
com.google.appengine:appengine-java-sdk:1.9.18
和谷歌云存储库版本:
com.google.apis:google-api-services-storage:v1-rev35-1.20.0
谢谢
推荐答案
转到 Google Developers Console -> Credentials 并创建默认服务帐户 .json 密钥.当你这样做时，它会为你下载一个像 default-account-credentials.json 这样的文件.然后，您必须将该文件放在应用引擎项目中的某个位置.调用
Go to Google Developers Console -> Credentials and create a default service account .json key. When you do that, it will download a file like default-account-credentials.json for you. You must then put that file somewhere in your app engine project. This file will be referenced when you call
Credential creds = GoogleCredential.getApplicationDefault();
但是，在此之前，您必须将环境变量设置为该文件位置.为此，请打开您的 appengine-web.xml 文件并将此行放入其中:
However, before that works you must set the environmental variable to that files location. To do that open up your appengine-web.xml file and put this line into it:
<env-variables>
<env-var name="GOOGLE_APPLICATION_CREDENTIALS"
value="WEB-INF/default-account-credentials.json" />
</env-variables>
其中 value 是您刚刚下载的 .json creds 文件的路径.
Where value is the path to your .json creds file you just downloaded.
现在它可以工作了.(你的 gradle 导入没问题)
Now it will work. (your gradle imports are fine)
这篇关于访问谷歌云存储的应用引擎项目的默认凭据?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，WP2