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

Question

Error: Unexpected character encountered while parsing value: e. Path '', line 0, position 0.

我正在使用 Google .Net 客户端库来访问 Google Drive API v3 特别是 Google.Apis.Drive.v3包裹。我授权在 C# 中使用“服务帐户”。

用p12 key 授权是没有问题的。但是，建议使用 JSON 并保留 p12 格式以实现向后兼容性。

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;

        }
    }

我在记事本中查看了 JSON 文件，它似乎已加密。

"ewogICJ0eXBlIjogInNlcnZpY2VfYWNjb3VudCIsCiAgInByb2plY3RfaWQiOiAicmFkaWFudC1tZXJjdXJ5LTEyMjkwNyIsCiAgIn.........."

继续使用P12可以吗？

Answer 1

这适用于我使用来自 Google Developers Console 的 JSON 凭据文件。我正在使用 Analytics Service，但只是换出 Drive 服务的适当名称:

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>",
        });
    }