AbpZero之企业微信登录（拓展第三方auth授权登录）第一步：查看AbpZero的auth第三方登录的底层机制

在AbpZero框架中，auth登录接口位于Web.Core库下的Controllers文件夹的TokenAuthController.cs的ExternalAuthenticate方法

 

ExternalAuthenticate方法的代码如下：

 1   [HttpPost]
 2         public async Task<ExternalAuthenticateResultModel> ExternalAuthenticate([FromBody] ExternalAuthenticateModel model)
 3         {
 4             var externalUser = await GetExternalUserInfo(model);
 5 
 6             var loginResult = await _logInManager.LoginAsync(new UserLoginInfo(model.AuthProvider, model.ProviderKey, model.AuthProvider), GetTenancyNameOrNull());
 7             switch (loginResult.Result)
 8             {
 9                 case AbpLoginResultType.Success:
10                     {
11                         var accessToken = CreateAccessToken(CreateJwtClaims(loginResult.Identity));
12 
13                         var returnUrl = model.ReturnUrl;
14 
15                         if (model.SingleSignIn.HasValue && model.SingleSignIn.Value && loginResult.Result == AbpLoginResultType.Success)
16                         {
17                             loginResult.User.SetSignInToken();
18                             returnUrl = AddSingleSignInParametersToReturnUrl(model.ReturnUrl, loginResult.User.SignInToken, loginResult.User.Id, loginResult.User.TenantId);
19                         }
20 
21                         return new ExternalAuthenticateResultModel
22                         {
23                             AccessToken = accessToken,
24                             EncryptedAccessToken = GetEncrpyedAccessToken(accessToken),
25                             ExpireInSeconds = (int)_configuration.Expiration.TotalSeconds,
26                             ReturnUrl = returnUrl
27                         };
28                     }
29                 case AbpLoginResultType.UnknownExternalLogin:
30                     {
31                         var newUser = await RegisterExternalUserAsync(externalUser);
32                         if (!newUser.IsActive)
33                         {
34                             return new ExternalAuthenticateResultModel
35                             {
36                                 WaitingForActivation = true
37                             };
38                         }
39 
40                         //Try to login again with newly registered user!
41                         loginResult = await _logInManager.LoginAsync(new UserLoginInfo(model.AuthProvider, model.ProviderKey, model.AuthProvider), GetTenancyNameOrNull());
42                         if (loginResult.Result != AbpLoginResultType.Success)
43                         {
44                             throw _abpLoginResultTypeHelper.CreateExceptionForFailedLoginAttempt(
45                                 loginResult.Result,
46                                 model.ProviderKey,
47                                 GetTenancyNameOrNull()
48                             );
49                         }
50 
51                         var accessToken = CreateAccessToken(CreateJwtClaims(loginResult.Identity));
52                         return new ExternalAuthenticateResultModel
53                         {
54                             AccessToken = accessToken,
55                             EncryptedAccessToken = GetEncrpyedAccessToken(accessToken),
56                             ExpireInSeconds = (int)_configuration.Expiration.TotalSeconds
57                         };
58                     }
59                 default:
60                     {
61                         throw _abpLoginResultTypeHelper.CreateExceptionForFailedLoginAttempt(
62                             loginResult.Result,
63                             model.ProviderKey,
64                             GetTenancyNameOrNull()
65                         );
66                     }
67             }
68         }

我们查看 GetExternalUserInfo下面的方法，发现它是已经封装成了Abp.AspNetZeroCore.Web.dll，我们用反编译工具可以看到对应的代码

随便拿个谷歌的auth登录看下

using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authentication.Google;
using Newtonsoft.Json.Linq;

namespace Abp.AspNetZeroCore.Web.Authentication.External.Google
{
    // Token: 0x02000010 RID: 16
    public class GoogleAuthProviderApi : ExternalAuthProviderApiBase
    {
        // Token: 0x06000036 RID: 54 RVA: 0x0000244C File Offset: 0x0000064C
        public override async Task<ExternalAuthUserInfo> GetUserInfo(string accessCode)
        {
            ExternalAuthUserInfo result;
            using (HttpClient client = new HttpClient())
            {
                client.DefaultRequestHeaders.UserAgent.ParseAdd("Microsoft ASP.NET Core OAuth middleware");
                client.DefaultRequestHeaders.Accept.ParseAdd("application/json");
                client.Timeout = TimeSpan.FromSeconds(30.0);
                client.MaxResponseContentBufferSize = 10485760L;
                HttpResponseMessage httpResponseMessage = await client.SendAsync(new HttpRequestMessage(HttpMethod.Get, GoogleDefaults.UserInformationEndpoint)
                {
                    Headers = 
                    {
                        Authorization = new AuthenticationHeaderValue("Bearer", accessCode)
                    }
                });
                httpResponseMessage.EnsureSuccessStatusCode();
                JObject user = JObject.Parse(await httpResponseMessage.Content.ReadAsStringAsync());
                result = new ExternalAuthUserInfo
                {
                    Name = GoogleHelper.GetName(user),
                    EmailAddress = GoogleHelper.GetEmail(user),
                    Surname = GoogleHelper.GetFamilyName(user),
                    ProviderKey = GoogleHelper.GetId(user),
                    Provider = "Google"
                };
            }
            return result;
        }

        // Token: 0x04000010 RID: 16
        public const string Name = "Google";
    }
}

发现auth登录都是继承于ExternalAuthProviderApiBase

篇幅太长，下回分解。