具有服務帳戶的本地 java 客戶端的 google api 訪問令牌 null

Question

我創建了一個服務帳戶來使用來自本地 Java 客戶端的 Google 聊天（不是機器人）。 我的目標是將 flowdock 數據遷移到 Google 聊天。

我嘗試了不同的方法來使用服務帳戶獲取訪問令牌，並查看了幾個文檔和論壇......

證書加載了所有證書信息。 但訪問令牌保持為空。

public class ChatScopes {
static final String CHAT_SPACES = "https://chat.googleapis.com/v1/spaces";
static final String CLOUD_AUTH = "https://www.googleapis.com/auth/cloud-platform";
static final String CHAT_MESSAGES = "https://www.googleapis.com/chat.messages.create";
static final String CHAT_SPACES_2 = "https://www.googleapis.com/chat.spaces.create";
static final List<String> scopes = Lists.newArrayList(
        ChatScopes.CLOUD_AUTH, 
        ChatScopes.CHAT_SPACES,
        ChatScopes.CHAT_SPACES_2, 
        ChatScopes.CHAT_MESSAGES);

}
...

GoogleCredentials credentials = GoogleCredentials
            .fromStream(AuthenticationService.class.getResourceAsStream(CERT_FILE))
            .createScoped(ChatScopes.scopes);

1.a

AccessToken token = credentials.refreshAccessToken(); // IOException: Error parsing token refresh response. Expected value access_token not found.

1.b

AccessToken token = credentials.getAccessToken(); // token is null

使用示例服務帳戶更新##

GoogleCredential credentials = GoogleCredential
            .fromStream(AuthenticationService.class.getResourceAsStream(CERT_FILE_2))
            .createScoped(Collections.singleton(ChatScopes.CHAT_SPACES));

return new HangoutsChat.Builder(httpTransport, JSON_FACTORY, credentials )
            .setApplicationName(APP_NAME)
            .build();
            .build();

使用 hangoutsChat 請求時的響應，因為訪問令牌保持為空（無論是否調用刷新和/或 getAccessToken）
獲取 https://chat.googleapis.com/v1/spaces

{
"code": 401,
"details": [
    {
        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
        "reason": "CREDENTIALS_MISSING"
    }
],
"errors": [
    {
        "domain": "global",
        "location": "Authorization",
        "locationType": "header",
        "message": "Login Required.",
        "reason": "required"
    }
],
"message": "Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.",
"status": "UNAUTHENTICATED"

}

Answer 1

看來我們需要在這里編寫一些干凈的代碼。 該錯誤實際上來自錯誤的范圍聲明。 添加聊天機器人（為什么我不需要機器人？）讓我進步了。

范圍

public class ChatScopes {
static final String CLOUD_SCOPE = "https://www.googleapis.com/auth/cloud-platform";
static final String CHAT_SCOPE = "https://www.googleapis.com/auth/chat";
static final String CHAT_BOT_SCOPE = "https://www.googleapis.com/auth/chat.bot";
static final List<String> scopes = Lists.newArrayList(
    CLOUD_SCOPE,
    CHAT_SCOPE,
    CHAT_BOT_SCOPE);