導入谷歌聯繫人

您好我想在我的默認MVC5應用程序檢索谷歌聯繫人。我使用下面的代碼成功登錄。導入谷歌聯繫人

GoogleOAuth2AuthenticationOptions googleOptions = new GoogleOAuth2AuthenticationOptions() 
{ 
       ClientId = "<ClientId>", 
       ClientSecret = "<ClientSecret>", 
       AccessType = "offline", 
       Provider = new GoogleOAuth2AuthenticationProvider() 
       { 
        OnAuthenticated = (context) => 
        {       
         context.Identity.AddClaim(new Claim("accessToken", context.AccessToken)) 

         if (context.RefreshToken != null) 
         { 
          context.Identity.AddClaim(new Claim("refreshToken", context.RefreshToken)); 
         }      
         context.Identity.AddClaim(new Claim("EmailAddressFieldName", context.Email)); 
         context.Identity.AddClaim(new Claim("NameFieldName", context.Name)); 
         context.Identity.AddClaim(new Claim("TokenIssuedFieldName", DateTime.Now.ToString())); 
         context.Identity.AddClaim(new Claim("TokenExpiresInFieldName", 
          ((long)context.ExpiresIn.Value.TotalSeconds).ToString())); 

         return Task.FromResult(0); 
        } 
       } 
      }; 


      //googleOptions.Scope.Add("https://www.google.com/m8/feeds"); 
      app.UseGoogleAuthentication(googleOptions);

經認證的確認保存我的accessToken和RefreshToken到ASPNetUserClaims表我callbackmethod在賬戶控制器

public async Task<ActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl) 
     { 
      if (User.Identity.IsAuthenticated) 
      { 
       return RedirectToAction("Index", "Manage"); 
      } 

      if (ModelState.IsValid) 
      { 
       // Get the information about the user from the external login provider 
       var info = await AuthenticationManager.GetExternalLoginInfoAsync(); 
     //one things to be noted is when i use googleOptions.Scope.Add("https://www.google.com/m8/feeds"); as commented above this info is null 
     //not sure why 
       if (info == null) 
       { 
        return View("ExternalLoginFailure"); 
       } 
       var user = new ApplicationUser { UserName = model.Email, Email = model.Email }; 
       var result = await UserManager.CreateAsync(user); 
       if (result.Succeeded) 
       { 
        result = await UserManager.AddLoginAsync(user.Id, info.Login); 
        if (result.Succeeded) 
        { 
         var accessToken = info.ExternalIdentity.Claims.FirstOrDefault(x => x.Type == "accessToken"); 
         var refreshToken = info.ExternalIdentity.Claims.FirstOrDefault(x => x.Type == "refreshToken"); 
         await UserManager.AddClaimAsync(user.Id, accessToken); 
         await UserManager.AddClaimAsync(user.Id, refreshToken); 
         await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false); 
         return RedirectToLocal(returnUrl); 
        } 
       } 
       AddErrors(result); 
      } 

      ViewBag.ReturnUrl = returnUrl; 
      return View(model); 
     }

反正當我在使用Google憑據現在我想要檢索的谷歌聯繫人正在loged聯繫方式中的HomeController使用下面代碼中的google客戶端庫。

public ActionResult Contact() 
     {   
      var user= UserManager.FindByEmailAsync(User.Identity.Name); 
      var claim = ClaimsPrincipal.Current.Claims;   
      OAuth2Parameters parameters = new OAuth2Parameters(); 
      parameters.AccessToken = claim.Where(i => i.Type == "accessToken").Select(i => i.Value).SingleOrDefault(); 
      parameters.RefreshToken = claim.Where(i => i.Type == "refreshToken").Select(i => i.Value).SingleOrDefault(); 
      //parameters.Scope = "https://www.google.com/m8/feeds";   
      GetGoogleContacts(parameters); 
      return View(); 
     } 

     private static void GetGoogleContacts(OAuth2Parameters parameters) 
     { 
      try { 
       RequestSettings settings = new RequestSettings("MvcAuth",parameters); 
       ContactsRequest cr = new ContactsRequest(settings); 
       Feed<Contact> f = cr.GetContacts(); 
       foreach (Contact c in f.Entries) 
       { 
        Console.WriteLine(c.Name.FullName); 
       } 
      } 
      catch (Exception a) 
      { 
       Console.WriteLine("A Google Apps error occurred."); 
       Console.WriteLine(); 
      } 

     }

，但我得到異常「的要求執行失敗：https://www.google.com/m8/feeds/contacts/default/full」遠程服務器返回錯誤：（401）未經授權。這意味着我的accesstoken不是有效的，如果它不是有效的原因。我怎樣才能讓我的谷歌聯繫人。請幫助我花了差不多5天的時間但沒有成功。我只是想找回谷歌接觸，當我在使用Owin中間件組件UseGoogleAuthentication（）

來源

2017-04-07 Muhammad Ali

什麼是ContactsRequest您如何應用訪問令牌？ – DaImTo

我正在使用.Net客戶端庫進行ContactsRequest請參閱下面的鏈接https://developers.google.com/google-apps/contacts/v3/，我將accessToken作爲OAuth2Parameters傳遞給 –

實際上，我正在遵循本教程http：// www.daimto.com/google-contacts-with-c/但是我從Aspnet獲取accessToken聲明，當使用owin中間件組件成功進行身份驗證時，我存儲在外部回調函數中usegoogleauthentication（） –

首先我登錄，您必須確保令牌& Refersh令牌已經保存在cliam表接取，其次，你應該知道的訪問令牌有約會時間1小時

來源

2017-09-05 05:39:04 user1693183

導入谷歌聯繫人

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