Visual Studio 2015 update 3
Asp.Net Core 1.0
1 准备工作
申请微信公众平台接口测试帐号，申请网址：（?t=sandbox/login）。申请接口测试号无需公众帐号，可以直接体验和测试公众平台所有高级接口。
1.1 配置接口信息
1.2 修改网页授权信息
点击“修改”后在弹出页面填入你的网站域名：
2 新建网站项目
2.1 选择ASP.NET Core Web Application 模板
2.2 选择Web 应用程序，并更改身份验证为个人用户账户
3.1添加引用
打开project.json文件，添加引用Microsoft.AspNetCore.Authentication.OAuth
3.2 添加代码文件
在项目中新建文件夹，命名为WeChatOAuth，并添加代码文件（本文最后附全部代码）。
3.3 注册微信登录中间件
打开Startup.cs文件，在Configure中添加代码：
app.UseWeChatAuthentication(new WeChatOptions() { AppId = "******", AppSecret = "******" });
注意该代码的插入位置必须在app.UseIdentity()下方。
4 代码
WeChatAppBuilderExtensions.cs：
// Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. using System; using Microsoft.AspNetCore.Authentication.WeChat; using Microsoft.Extensions.Options; namespace Microsoft.AspNetCore.Builder { /// <summary> /// Extension methods to add WeChat authentication capabilities to an HTTP application pipeline. /// </summary> public static class WeChatAppBuilderExtensions { /// <summary> /// Adds the <see cref="WeChatMiddleware"/> middleware to the specified <see cref="IApplicationBuilder"/>, which enables WeChat authentication capabilities. /// </summary> /// <param>The <see cref="IApplicationBuilder"/> to add the middleware to.</param> /// <returns>A reference to this instance after the operation has completed.</returns> public static IApplicationBuilder UseWeChatAuthentication(this IApplicationBuilder app) { if (app == null) { throw new ArgumentNullException(nameof(app)); } return app.UseMiddleware<WeChatMiddleware>(); } /// <summary> /// Adds the <see cref="WeChatMiddleware"/> middleware to the specified <see cref="IApplicationBuilder"/>, which enables WeChat authentication capabilities. /// </summary> /// <param>The <see cref="IApplicationBuilder"/> to add the middleware to.</param> /// <param>A <see cref="WeChatOptions"/> that specifies options for the middleware.</param> /// <returns>A reference to this instance after the operation has completed.</returns> public static IApplicationBuilder UseWeChatAuthentication(this IApplicationBuilder app, WeChatOptions options) { if (app == null) { throw new ArgumentNullException(nameof(app)); } if (options == null) { throw new ArgumentNullException(nameof(options)); } return app.UseMiddleware<WeChatMiddleware>(Options.Create(options)); } } }
WeChatDefaults.cs：
// Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. namespace Microsoft.AspNetCore.Authentication.WeChat { public static class WeChatDefaults { public const string AuthenticationScheme = "WeChat"; public static readonly string AuthorizationEndpoint = "https://open.weixin.qq.com/connect/oauth2/authorize"; public static readonly string TokenEndpoint = "https://api.weixin.qq.com/sns/oauth2/access_token"; public static readonly string UserInformationEndpoint = "https://api.weixin.qq.com/sns/userinfo"; } }
WeChatHandler.cs