BaseClientService.Initializer not found in google api .in c＃

Question

我无法在google.API DLL中找到这些具体的类BaseClientService.Initializer。其实，我想使用的服务帐户证书获取谷歌Analytics的数据，但是当我创建了服务对象，它需要IAuthenticator，在这里我需要创建BaseClientService.Initializer对象，

string scopes = new string[] { AnalyticsService.Scopes.AnalyticsReadonly.GetStringValue() }; 
ServiceAccountCredential credential = new ServiceAccountCredential(new ServiceAccountCredential.Initializer("xxx@gmail.com") { 
       Scopes = scopes 
      }.FromCertificate()); 
var service = new AnalyticsService(new BaseClientService.Initializer() 
      { 
       HttpClientInitializer = credential, 
       ApplicationName = "Analytics API Sample", 
      }); 

下面是引用链接，我遵循http://www.daimto.com/google-drive-api-with-a-service-account/

Answer 1

这是一个非常古老的教程，您应该在Google开发者控制台中创建项目时下载.json密钥文件。此代码更新为Google service account with Google Analytics。

Gmail.com不是有效的服务帐户电子邮件地址。您也可以阅读我的Google developer for beginners service account教程。

using Google.Apis.AnalyticsReporting.v4; 
using Google.Apis.Auth.OAuth2; 
using Google.Apis.Services; 
using System; 
using System.IO; 
using System.Security.Cryptography.X509Certificates; 

namespace GoogleAnaltyics.V4 
{ 
    public class ServiceAccountJson 
    { 
     public string type { get; set; } 
     public string project_id { get; set; } 
     public string private_key_id { get; set; } 
     public string private_key { get; set; } 
     public string client_email { get; set; } 
     public string client_id { get; set; } 
     public string auth_uri { get; set; } 
     public string token_uri { get; set; } 
     public string auth_provider_x509_cert_url { get; set; } 
     public string client_x509_cert_url { get; set; } 
    } 


    public class ServiceAccountAuthExample 
    { 

     /// <summary> 
     /// Authenticating to Google using a Service account 
     /// Documentation: https://developers.google.com/accounts/docs/OAuth2#serviceaccount 
     /// </summary> 
     /// <param name="serviceAccountEmail">From Google Developer console https://console.developers.google.com</param> 
     /// <param name="serviceAccountCredentialFilePath">Location of the .p12 or Json Service account key file downloaded from Google Developer console https://console.developers.google.com</param> 
     /// <returns>AnalyticsService used to make requests against the Analytics API</returns> 
     public static AnalyticsReportingService AuthenticateServiceAccount(string serviceAccountEmail, string serviceAccountCredentialFilePath) 
     { 
      try 
      { 
       if (string.IsNullOrEmpty(serviceAccountCredentialFilePath)) 
        throw new Exception("Path to the .p12 service account credentials file is required."); 
       if (!File.Exists(serviceAccountCredentialFilePath)) 
        throw new Exception("The service account credentials .p12 file does not exist at: " + serviceAccountCredentialFilePath); 
       if (string.IsNullOrEmpty(serviceAccountEmail)) 
        throw new Exception("ServiceAccountEmail is required."); 

       // These are the scopes of permissions you need. It is best to request only what you need and not all of them 
       string[] scopes = new string[] { AnalyticsReportingService.Scope.Analytics };    // View your Google Analytics data 

       // For Json file 
       if (Path.GetExtension(serviceAccountCredentialFilePath).ToLower() == ".json") 
       { 
        GoogleCredential credential; 
        using (var stream = new FileStream(serviceAccountCredentialFilePath, FileMode.Open, FileAccess.Read)) 
        { 
         credential = GoogleCredential.FromStream(stream) 
          .CreateScoped(scopes); 
        } 

        // Create the Analytics service. 
        return new AnalyticsReportingService(new BaseClientService.Initializer() 
        { 
         HttpClientInitializer = credential, 
         ApplicationName = "Analytics Authentication Sample", 
        }); 
       } 
       else if (Path.GetExtension(serviceAccountCredentialFilePath).ToLower() == ".p12") 
       { // If its a P12 file 

        var certificate = new X509Certificate2(serviceAccountCredentialFilePath, "notasecret", X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable); 
        var credential = new ServiceAccountCredential(new ServiceAccountCredential.Initializer(serviceAccountEmail) 
        { 
         Scopes = scopes 
        }.FromCertificate(certificate)); 

        // Create the Analytics service. 
        return new AnalyticsReportingService(new BaseClientService.Initializer() 
        { 
         HttpClientInitializer = credential, 
         ApplicationName = "Analytics Authentication Sample", 
        }); 

       } 
       else 
       { 
        throw new Exception("Unsupported Service accounts credentials."); 
       } 

      } 
      catch (Exception ex) 
      { 
       Console.WriteLine("Create service account AnalyticsService failed" + ex.Message); 
       throw new Exception("CreateServiceAccountAnalyticsServiceFailed", ex); 
      } 
     } 

     /// <summary> 
     /// Authenticating to Google using a Service account 
     /// Documentation: https://developers.google.com/accounts/docs/OAuth2#serviceaccount 
     /// </summary> 
     /// <param name="serviceAccountEmail">From Google Developer console https://console.developers.google.com</param> 
     /// <param name="key">Key from with in json file 
     /// 
     /// Example: 
     /// ServiceAccountAuth tmp = JsonConvert.DeserializeObject<ServiceAccountAuth>(File.ReadAllText(serviceAccountJsonPath)); 
     /// 
     /// </param> 
     /// <returns>AnalyticsService used to make requests against the Analytics API</returns> 
     public static AnalyticsReportingService AuthenticateServiceAccountFromKey(string serviceAccountEmail, string key) 
     { 
      try 
      { 
       if (string.IsNullOrEmpty(key)) 
        throw new Exception("Key is required."); 
       if (string.IsNullOrEmpty(serviceAccountEmail)) 
        throw new Exception("ServiceAccountEmail is required."); 

       // These are the scopes of permissions you need. It is best to request only what you need and not all of them 
       string[] scopes = new string[] { AnalyticsReportingService.Scope.Analytics };    // View your Google Analytics data 


       var credential = new ServiceAccountCredential(new ServiceAccountCredential.Initializer(serviceAccountEmail) 
       { 
        Scopes = scopes 
       }.FromPrivateKey(key)); 


       // Create the Analytics service. 
       return new AnalyticsReportingService(new BaseClientService.Initializer() 
       { 
        HttpClientInitializer = credential, 
        ApplicationName = "Analytics Authentication Sample", 
       }); 

      } 
      catch (Exception ex) 
      { 
       Console.WriteLine("Create service account AnalyticsService failed" + ex.Message); 
       throw new Exception("CreateServiceAccountAnalyticsServiceFailed", ex); 
      } 
     } 

    } 
}