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Google Dialogflow:应用程序默认凭据不可用

[英]Google Dialogflow: The Application Default Credentials are not available

嗨,我对 Google Cloud 的 Java SDK 库有疑问。

我需要查询 Dialogflow V2 API,我正在使用这个 SDK ( https://github.com/GoogleCloudPlatform/google-cloud-java/tree/master )

我已按照说明将 GOOGLE_APPLICATION_CREDENTIALS 设置为环境变量。

我做了几次尝试(我使用的是 Mac):

export GOOGLE_APPLICATION_CREDENTIALS=path/to/my.json

不工作

推杆

export GOOGLE_APPLICATION_CREDENTIALS=path/to/my.json

在 .bash_profile

不工作

在我的 Java 代码中:

System.setProperty("GOOGLE_APPLICATION_CREDENTIALS", "/path/to/my.json");
GoogleCredential credential = GoogleCredential.getApplicationDefault();

不工作

String jsonPath = "/path/to/my.json";
GoogleCredentials credentials = GoogleCredentials.fromStream(new FileInputStream(jsonPath));
Storage storage = StorageOptions.newBuilder().setCredentials(credentials).build().getService();

不工作

通过“Maven build > Environment > New variable”将 GOOGLE_APPLICATION_CREDENTIALS 作为 Eclipse 中的环境变量并重新启动 IDE

不工作

总是出现同样的错误:

An error occurred during Dialogflow http request: 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.
java.io.IOException: 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

真的我无法理解出了什么问题。

由于上述错误,这是查询 Dialogflow 从未到达的代码片段:

SessionsClient sessionsClient = SessionsClient.create();
SessionName session = SessionName.of("my-project-id", sessionId);
InputStream stream = new ByteArrayInputStream(requestBody.getBytes(StandardCharsets.UTF_8));
QueryInput queryInput = QueryInput.newBuilder().build().parseFrom(stream);
DetectIntentResponse response = sessionsClient.detectIntent(session, queryInput);  

引发异常

SessionsClient sessionsClient = SessionsClient.create();

提前致谢。

解决方案是将 GOOGLE_APPLICATION_CREDENTIALS 设置为 Application Server 的环境变量。

与问题中提到的不同,以这种方式提供时,我已经获得了“凭证”

Storage storage = StorageOptions.newBuilder().setCredentials(credentials).build().getService();

但是与FirestoreOptions相同的方法失败了,并提到了错误“应用程序默认凭据不可用”。

注意:我愿意不通过环境变量配置我的应用程序,而是更喜欢在代码中进行配置。 另一个原因 - 我需要来自一个应用程序的多个不同连接。

在调试 Google 的代码后,我发现他们不使用提供的凭据,而是在提供的选项上调用getCredentialsProvider() 我认为这是他们实现中的错误,但解决方法相当简单:

  1. 创建自己的 CredentialsProvider
  2. 将其设置为 FirestoreOptions

虚拟样本:

public static class MyCredentialsProvider implements CredentialsProvider {
    GoogleCredentials credentials;

    public MyCredentialsProvider(GoogleCredentials credentials) {
        this.credentials = credentials;
    }

    @Override
    public Credentials getCredentials() throws IOException {
        return credentials;
    }
}

...

FirestoreOptions.Builder builder = FirestoreOptions.newBuilder()
        .setProjectId(serviceAccount.project_id)
        .setCredentialsProvider(new MyCredentialsProvider(credentials));

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