ASP.NETCore集成微信登录的实例图解

工具：

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：（mp.weixin.qq.com/debug/cgi-bin/sandbox?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

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{ /// 
 /// Extension methods to add WeChat authentication capabilities to an HTTP application pipeline. /// 
 public static class WeChatAppBuilderExtensions {  /// 
  /// Adds the  middleware to the specified , which enables WeChat authentication capabilities.  /// 
  /// 
  public WeChatMiddleware(   RequestDelegate next,   IDataProtectionProvider dataProtectionProvider,   ILoggerFactory loggerFactory,   UrlEncoder encoder,   IOptions sharedOptions,   IOptions options)   : base(next, dataProtectionProvider, loggerFactory, encoder, sharedOptions, options)  {   if (next == null)   {    throw new ArgumentNullException(nameof(next));   }   if (dataProtectionProvider == null)   {    throw new ArgumentNullException(nameof(dataProtectionProvider));   }   if (loggerFactory == null)   {    throw new ArgumentNullException(nameof(loggerFactory));   }   if (encoder == null)   {    throw new ArgumentNullException(nameof(encoder));   }   if (sharedOptions == null)   {    throw new ArgumentNullException(nameof(sharedOptions));   }   if (options == null)   {    throw new ArgumentNullException(nameof(options));   }   if (string.IsNullOrEmpty(Options.AppId))   {    throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, nameof(Options.AppId)));   }   if (string.IsNullOrEmpty(Options.AppSecret))   {    throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, nameof(Options.AppSecret)));   }  }  /// 
  /// Provides the  object for processing authentication-related requests.  /// 
  /// An  configured with the  supplied to the constructor.  protected override AuthenticationHandler CreateHandler()  {   return new WeChatHandler(Backchannel);  } }}

WeChatOptions.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.Collections.Generic;using Microsoft.AspNetCore.Authentication.WeChat;using Microsoft.AspNetCore.Http;using Microsoft.AspNetCore.Identity;namespace Microsoft.AspNetCore.Builder{ /// 
 /// Configuration options for . /// 
 public class WeChatOptions : OAuthOptions {  /// 
  /// Initializes a new .  /// 
  public WeChatOptions()  {   AuthenticationScheme = WeChatDefaults.AuthenticationScheme;   DisplayName = AuthenticationScheme;   CallbackPath = new PathString("/signin-wechat");   StateAddition = "#wechat_redirect";   AuthorizationEndpoint = WeChatDefaults.AuthorizationEndpoint;   TokenEndpoint = WeChatDefaults.TokenEndpoint;   UserInformationEndpoint = WeChatDefaults.UserInformationEndpoint;   //SaveTokens = true;      //BaseScope （不弹出授权页面，直接跳转，只能获取用户openid），   //InfoScope （弹出授权页面，可通过openid拿到昵称、性别、所在地。并且，即使在未关注的情况下，只要用户授权，也能获取其信息）   WeChatScope = InfoScope;  }  // WeChat uses a non-standard term for this field.  /// 
  /// Gets or sets the WeChat-assigned appId.  /// 
  public string AppId  {   get { return ClientId; }   set { ClientId = value; }  }  // WeChat uses a non-standard term for this field.  /// 
  /// Gets or sets the WeChat-assigned app secret.  /// 
  public string AppSecret  {   get { return ClientSecret; }   set { ClientSecret = value; }  }  public string StateAddition { get; set; }  public string WeChatScope { get; set; }  public string BaseScope = "snsapi_base";  public string InfoScope = "snsapi_userinfo"; }}

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