Question

错误：解析值时遇到意外的字符：e。路径 ''，第0行，第0位。

我正在使用Google .Net客户端库来访问Google驱动器API v3，特别是Google.Apis.Drive.v3包。我正在授权使用C＃的“服务帐户”。

使用p12密钥进行授权是没有问题的。但是，建议使用JSON并保持p12格式以便向后兼容。

我从Google Developers Console下载了JSON文件，并尝试使用以下代码进行授权：

    public static Google.Apis.Drive.v3.DriveService AuthenticateServiceAccountJSON(string keyFilePath) {

        // check the file exists
        if (!File.Exists(keyFilePath)) {
            Console.WriteLine("An Error occurred - Key file does not exist");
            return null;
        }

        string[] scopes = new string[] { DriveService.Scope.Drive,                  // view and manage your files and documents
                                         DriveService.Scope.DriveAppdata,           // view and manage its own configuration data
                                         DriveService.Scope.DriveFile,              // view and manage files created by this app
                                         DriveService.Scope.DriveMetadataReadonly,  // view metadata for files
                                         DriveService.Scope.DriveReadonly,          // view files and documents on your drive
                                         DriveService.Scope.DriveScripts };         // modify your app scripts     

        try {
            using (var stream = new FileStream(keyFilePath, FileMode.Open, FileAccess.Read)) {
                var credential = GoogleCredential.FromStream(stream);
                if (credential.IsCreateScopedRequired) {
                    credential.CreateScoped(scopes);
                }
                // Create the service.
                Google.Apis.Drive.v3.DriveService service = new Google.Apis.Drive.v3.DriveService(new BaseClientService.Initializer() {
                    HttpClientInitializer = credential,
                    ApplicationName = "MyDrive",
                });
                return service;
            }
        } catch (Exception ex) {
            Console.WriteLine(ex.InnerException);
            return null;

        }
    }

我查看了记事本中的JSON文件，似乎已加密。

“ewogICJ0eXBlIjogInNlcnZpY2VfYWNjb3VudCIsCiAgInByb2plY3RfaWQiOiAicmFkaWFudC1tZXJjdXJ5LTEyMjkwNyIsCiAgIn ..........”

继续使用P12可以吗？

Answer 1

这适用于我使用Google Developers Console中的JSON凭据文件。我正在使用Google Analytics服务，但只需替换Drive服务的相应名称：

private AnalyticsReportingService service;

public async Task GetAuthorizationByServiceAccount()
    {
        string[] scopes = new string[] { AnalyticsReportingService.Scope.AnalyticsReadonly }; // Put your scopes here
        var keyFilePath = AppContext.BaseDirectory + @"KeyFile.json";

        //Console.WriteLine("Key File: " + keyFilePath);

        var stream = new FileStream(keyFilePath, FileMode.Open, FileAccess.Read);

        var credential = GoogleCredential.FromStream(stream);
        credential = credential.CreateScoped(scopes);

        service = new AnalyticsReportingService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = "<Your App Name here>",
        });
    }

Answer 2

确保您正在下载正确的文件......

GoogleCredential.FromStream(stream)

适用于JSON文件。它应该看起来像这样：

{
  "type": "service_account",
  "project_id": "",
  "private_key_id": "",
  "private_key": "-----BEGIN PRIVATE KEY-----
---END PRIVATE KEY-----\n",
  "client_email": "",
  "client_id": "",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://accounts.google.com/o/oauth2/token",
  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  "client_x509_cert_url": ""
}

您可以通过单击显示客户端ID的网格右侧的“下载JSON”按钮，在https://console.developers.google.com/apis/credentials获取此文件。只需确保所选ID的类型为＆＃34;服务帐户客户端＆＃34;。

Google Drive API v3使用JSON而不是P12（服务帐户） - 意外字符

2 个答案: