正在开发的一个以最简化的操作在 .NET Core 1.0 中处理微信请求的SDK

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Threading.Tasks;
 5 using Microsoft.AspNetCore.Builder;
 6 using Microsoft.AspNetCore.Http;
 7 using WeChat;
 8 using WeChat.Entities;
 9 
10 namespace WebApplication.Middleware
11 {
12     // You may need to install the Microsoft.AspNetCore.Http.Abstractions package into your project
13     public class WeChatMiddleware
14     {
15         private readonly RequestDelegate _next;
16 
17         public WeChatMiddleware(RequestDelegate next)
18         {
19             _next = next;
20         }
21 
22         public async Task Invoke(HttpContext httpContext)
23         {
24             if (httpContext.Request.Path.Value.ToLower().EndsWith("/wxapi"))
25             {
26                 #region Get
27                 if (httpContext.Request.Method == "GET")
28                 {
29                     string echoString = httpContext.Request.Query["echoStr"];
30                     // 没有必要参数 直接忽略
31                     if (string.IsNullOrWhiteSpace(echoString))
32                         await httpContext.Response.WriteAsync("(￣▽￣) 你想干嘛");
33 
34                     if (httpContext.CheckSignature(Option.WeChatConfig))
35                         await httpContext.Response.WriteAsync(echoString);
36                 }
37                 #endregion
38                 #region POST
39                 else if (httpContext.Request.Method == "POST")
40                 {
41                     string rsp = string.Empty;
42                     var message = httpContext.GetMessage(Option.WeChatConfig);
43                     if (message == null) return;//消息体验证失败或转换失败 终止处理
44                     switch (message.Type)
45                     {
46                         case MessageType.Text:
47                             switch (message.GetText())
48                             {
49                                 case "单图文":
50                                     rsp = message.ReplyNews(new News() { description = "测试", title = "测试图文" });
51                                     break;
52                                 case "多图文":
53                                     rsp = message.ReplyNews(
54                                         new News() { description = "呵呵", title = "凸(艹皿艹 )", picurl = "url" },
55                                         new News() { title = "阿勒", picurl = "url" }
56                                         );
57                                     break;
58                                 default:
59                                     rsp = message.ReplyText("你发了：" + message.GetText());
60                                     break;
61                             }
62                             break;
63                         case MessageType.Event:
64                             var evt = message.AsEvent();
65                             switch (evt.Event)
66                             {
67                                 case Event.unsubscribe: return;
68                                 case Event.subscribe:
69                                     rsp = message.ReplyText("关注成功");
70                                     break;
71                             }
72                             break;
73                         default:
74                             rsp = message.ReplyText("阿勒，你发了神马？");
75                             break;
76                     }
77                     await httpContext.FinalResponse(Option.WeChatConfig, rsp); return; //处理到此结束 直接返回消息
78                 }
79                 #endregion
80                 // 默认不返回任何数据，以避免微信重复提交请求
81                 return;
82             }
83             await _next(httpContext);
84 
85         }
86     }
87 
88     // Extension method used to add the middleware to the HTTP request pipeline.
89     public static class WeChatMiddlewareExtensions
90     {
91         public static IApplicationBuilder UseWeChatMiddleware(this IApplicationBuilder builder)
92         {
93             return builder.UseMiddleware<WeChatMiddleware>();
94         }
95     }
96 }