feat: 添加微信应用模块，支持微信支付及微信小程序对接（功能产品已上线验证）

Yi.Furion.Net6/Yi.Framework.Module/WeChat/WeChatManager.cs

@@ -0,0 +1,200 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Json;
+using System.Security.Cryptography;
+using System.Security.Policy;
+using System.Text;
+using System.Threading.Tasks;
+using Furion.DependencyInjection;
+using Furion.JsonSerialization;
+using Mapster;
+using Microsoft.AspNetCore.DataProtection.KeyManagement;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Org.BouncyCastle.Crypto.Engines;
+using Org.BouncyCastle.Crypto.Modes;
+using Org.BouncyCastle.Crypto.Parameters;
+using Yi.Framework.Module.WeChat.Extensions;
+using Yi.Framework.Module.WeChat.Model;
+using Yi.Framework.Module.WeChat.Token;
+
+namespace Yi.Framework.Module.WeChat
+{
+    public class WeChatManager : IWeChatManager, ISingleton
+    {
+        private WeChatOptions _options;
+        private IWeChatToken _weChatToken;
+        public WeChatManager(IOptions<WeChatOptions> options, IWeChatToken weChatToken)
+        {
+            _options = options.Value;
+            _weChatToken = weChatToken;
+        }
+
+        /// <summary>
+        /// 获取用户openid
+        /// </summary>
+        /// <param name="input"></param>
+        /// <returns></returns>
+        public async Task<Code2SessionResponse> Code2SessionAsync(Code2SessionInput input)
+        {
+            string url = "https://api.weixin.qq.com/sns/jscode2session";
+            var req = new Code2SessionRequest();
+            req.js_code = input.js_code;
+            req.secret = _options.AppSecret;
+            req.appid = _options.AppId;
+
+            using (HttpClient httpClient = new HttpClient())
+            {
+                string queryString = req.ToQueryString();
+                var builder = new UriBuilder(url);
+                builder.Query = queryString;
+                HttpResponseMessage response = await httpClient.GetAsync(builder.ToString());
+                var responseBody = await response.Content.ReadFromJsonAsync<Code2SessionResponse>();
+
+                responseBody.ValidateSuccess();
+
+                return responseBody;
+            }
+        }
+
+        /// <summary>
+        /// 支付预支付id，描述必填
+        /// </summary>
+        /// <param name="input"></param>
+        /// <returns></returns>
+        public async Task<JsApiResponse> JsApiAsync(JsApiInput input)
+        {
+            string url = "https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi";
+
+            var req = input.Adapt<JsApiRequest>();
+            req.mchid = _options.Mchid;
+            req.notify_url = _options.NotifyUrl;
+            req.appid = _options.AppId;
+
+            using (HttpClient httpClient = new HttpClient(new WeChatPayHttpHandler(_options.Mchid, _options.MerchantSerialNo)))
+            {// 设置Accept头
+                httpClient.DefaultRequestHeaders.Add("Accept", "application/json");
+                // 设置User-Agent头
+                httpClient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36");
+                JsonContent jsonContent = JsonContent.Create(req);
+                HttpResponseMessage response = await httpClient.PostAsync(url, jsonContent);
+                var data = await response.Content.ReadAsStringAsync();
+                response.EnsureSuccessStatusCode();
+                var responseBody = await response.Content.ReadFromJsonAsync<JsApiResponse>();
+                return responseBody;
+            }
+        }
+
+        /// <summary>
+        /// 支付通知回调
+        /// </summary>
+        /// <returns></returns>
+        public PayNoticeResult PayNotice(PayNoticeReponse reponse)
+        {
+            var data = reponse.resource;
+            var result = AEAD_AES_256_GCM(data.associated_data, data.nonce, data.ciphertext, _options.PaySecretKey);
+            var output = JSON.Deserialize<PayNoticeResult>(result);
+            return output;
+        }
+
+
+        /// <summary>
+        /// 获取不限制的小程序码
+        /// </summary>
+        /// <param name="path"></param>
+        /// <returns></returns>
+        public async Task<string> GetQRCodeAsync(string scene, string page, EnvVersionEnum unlimitedQRCodeEnum = EnvVersionEnum.release)
+        {
+            string url = $"https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token={await _weChatToken.GetTokenAsync()}";
+            var req = new UnlimitedQRCodeRequest(unlimitedQRCodeEnum);
+            req.scene = scene;
+            req.page = page;
+            req.env_version = unlimitedQRCodeEnum.ToString();
+            using (HttpClient httpClient = new HttpClient())
+            {
+                StringContent message = new StringContent(System.Text.Json.JsonSerializer.Serialize(req));
+
+                HttpResponseMessage response = await httpClient.PostAsync(url, message);
+
+                response.EnsureSuccessStatusCode();
+
+                var stream = await response.Content.ReadAsStreamAsync();
+                var result = ConvertStreamToBase64(stream);
+                return result;
+            }
+        }
+
+        /// <summary>
+        /// 小程序推送订阅消息
+        /// </summary>
+        /// <returns></returns>
+        public async Task SendUniformMessageAsync(UniformMessageInput input)
+        {
+            string url = $"https://api.weixin.qq.com/cgi-bin/message/wxopen/template/uniform_send?access_token={await _weChatToken.GetTokenAsync()}";
+            var req = input.Adapt<UniformMessageRequest>();
+            req.mp_template_msg.template_id = _options.OfficialAccounts.TemplateId;
+            req.mp_template_msg.appid = _options.OfficialAccounts.AppId;
+            req.mp_template_msg.miniprogram.appid = _options.AppId;
+ 
+            using (HttpClient httpClient = new HttpClient())
+            {
+                var body =new StringContent(JSON.Serialize(req));
+                HttpResponseMessage response = await httpClient.PostAsync(url, body);
+                var responseBody = await response.Content.ReadFromJsonAsync<UniformMessageResponse>();
+
+                responseBody.ValidateSuccess();
+            }
+
+        }
+
+
+        /// <summary>
+        /// AEAD_AES_256_GCM解密算法，用于解开支付回调的通知
+        /// </summary>
+        /// <param name="ciphertextBase64">需要base64</param>
+        /// <param name="associatedDataBase64">需要base64</param>
+        /// <param name="nonceBase64">需要base64</param>
+        /// <returns></returns>
+        public static string AEAD_AES_256_GCM(string associatedData, string nonce, string ciphertext, string secretKey)
+        {
+            try
+            {
+                GcmBlockCipher gcmBlockCipher = new GcmBlockCipher(new AesEngine());
+                AeadParameters aeadParameters = new AeadParameters(
+                    new KeyParameter(Encoding.UTF8.GetBytes(secretKey)),
+                    128,
+                    Encoding.UTF8.GetBytes(nonce),
+                    Encoding.UTF8.GetBytes(associatedData));
+                gcmBlockCipher.Init(false, aeadParameters);
+
+                byte[] data = Convert.FromBase64String(ciphertext);
+                byte[] plaintext = new byte[gcmBlockCipher.GetOutputSize(data.Length)];
+                int length = gcmBlockCipher.ProcessBytes(data, 0, data.Length, plaintext, 0);
+                gcmBlockCipher.DoFinal(plaintext, length);
+                return Encoding.UTF8.GetString(plaintext);
+            }
+            catch (Exception ex)
+            {
+                throw new WeChatException("支付回调解密错误", ex);
+            }
+        }
+
+        private string ConvertStreamToBase64(Stream stream)
+        {
+            // 将Stream对象转换为字节数组
+            byte[] buffer = new byte[stream.Length];
+            stream.Read(buffer, 0, (int)stream.Length);
+
+            // 将字节数组转换为Base64字符串
+            string base64String = Convert.ToBase64String(buffer);
+
+            return base64String;
+        }
+
+
+
+    }
+}