.NET WebAPI+微信支付
简述.NET WebAPI+微信支付在网上资源较少疑抑或过于复杂对于小白不太友好，基于自己开辟故而撰写本篇文章。
文末有少量代码不知道如何应用skit代码的可以找我拿类库，添加到你的项目即可食用。
首先必要预备注册好以及通过认证的微信小步伐如下图
https://i-blog.csdnimg.cn/blog_migrate/c2c3e25f62527431976840cdb086755f.png
存案必要营业执照
https://i-blog.csdnimg.cn/blog_migrate/a5e4e706fea6971781245648468edcd6.png
微信认证是通过第三方认证，23年12月以后关闭以后只能通过官方认证。
https://i-blog.csdnimg.cn/blog_migrate/8afda525f603aad3e2cb62730376d3fd.png
以及商户号
https://i-blog.csdnimg.cn/blog_migrate/47141b5d08b1891628fb065650484632.png
https://i-blog.csdnimg.cn/blog_migrate/83b712c438ffd9b8d015563fc8f290a5.png
实在代码反倒更简朴，最紧张的是进行小步伐的设置以及商户号绑定，绑定以后不可解绑，留意坑，故需先商量好，好比为官方机构开辟，推荐直接开两个号，因为测试的时候利用官方的各人都懂的。
大致分为以下几部分
[*]注册小步伐账号
[*]小步伐认证
[*]存案
[*]开通支付
[*]开通商户号
[*]设置api v3
[*]商户号与小步伐绑定
[*]保存商户号，V3 API 密钥，商户证书序列号，商户证书文件内容，AppId，AppSecret
材料：营业执照，营业执照法人身份证，本人微信，电话邮箱等等（乐成办理以后可将管理员设置为自己），餐饮类必要食品安全许可证才能更新小步伐版本，更新版本也有坑
https://i-blog.csdnimg.cn/blog_migrate/b8bad21ba44b3f5602e816405a5aeb00.png
此中必要多张手机号，还有邮箱，验证，审核，过程相当，，，嗯 。
一.设置（官方扣的，但是禁绝）
1.设置API key
下载并设置商户证书
商户API证书具体利用说明可参见接口规则文档中私钥和证书https://i-blog.csdnimg.cn/blog_migrate/003a2ce7eb50c2e24a8c624c260c5930.pnghttps://pay.weixin.qq.com/wiki/doc/apiv3/wechatpay/wechatpay3_1.shtml
商户可登录微信商户平台https://i-blog.csdnimg.cn/blog_migrate/003a2ce7eb50c2e24a8c624c260c5930.pnghttps://pay.weixin.qq.com/
[*]微信开辟文档并未写完（现实还需解密获取商户证书序列号）这一步很关键啊，各人留意一下，这个序列号不是微信支付平台的，而是apiv3里面解析获得的
[*]https://i-blog.csdnimg.cn/blog_migrate/7ebf4765e3ad3d8812dfea1b7c02d032.png
[*]必要前去证书查看 (myssl.com)https://i-blog.csdnimg.cn/blog_migrate/003a2ce7eb50c2e24a8c624c260c5930.pnghttps://myssl.com/cert_decode.html处解析获取
2.设置应用
账号申请指引
1、申请小步伐开辟者账号，进行微信认证，获取appid登录微信公众平台https://i-blog.csdnimg.cn/blog_migrate/003a2ce7eb50c2e24a8c624c260c5930.pnghttps://mp.weixin.qq.com/ 注册一个小步伐的开辟者账号。小步伐账号申请指引https://i-blog.csdnimg.cn/blog_migrate/003a2ce7eb50c2e24a8c624c260c5930.pnghttps://mp.weixin.qq.com/debug/wxadoc/introduction/index.html
你看微信文档，存案那些都没做，就让你开支付
2、小步伐开通微信支付，即申请或复用微信支付商户号，申请完小步伐后，登录小步伐后台。点击左侧导航栏的微信支付，在页面中进行开通。
https://i-blog.csdnimg.cn/blog_migrate/360ab4b45d9903ada9a959fdde25046d.png
点击开通按钮后，有2种方式可以获取微信支付本领，新申请微信支付商户号或绑定一个已有的微信支付商户号，请根据你的业务必要和具体情况选择，只能二选一，肯定选新的呀，老表，你都来看我博客了。
https://i-blog.csdnimg.cn/blog_migrate/c57122422d71f1d11f7e047b42ac41d6.png
二.skit引用以及skit支付代码文件引入
地点为开源微信支付 v3 版 .Net SDK（支持 .NET Core / Framework，完整封装全部 v3 API） | 微信开放社区 (qq.com)https://i-blog.csdnimg.cn/blog_migrate/003a2ce7eb50c2e24a8c624c260c5930.pnghttps://developers.weixin.qq.com/community/develop/article/doc/00020aadc384a0a5f01c3526b56813
https://i-blog.csdnimg.cn/blog_migrate/a9f11083382a55cc797bb87935a13c04.png
三.设置
https://i-blog.csdnimg.cn/blog_migrate/78e2332065bb04ab98b28ab624f4fb73.png
控制器内引用
注：少数为编者数据操作层，留意甄别
using Framework.Wechat.HttpClients;
using Framework.Wechat.Repositories;
using Framework.WePay.Services.HttpClients;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using SKIT.FlurlHttpClient.Wechat.Api.Models;
using SKIT.FlurlHttpClient.Wechat.Api;
using Framework.Wechat.Options;
using Framework.WePay.Options;
using SKIT.FlurlHttpClient.Wechat.TenpayV3.Models;
using SKIT.FlurlHttpClient.Wechat.TenpayV3;
using Microsoft.Extensions.Options;
using System.Collections.Generic;
using Newtonsoft.Json;
using static SKIT.FlurlHttpClient.Wechat.Api.Models.WxaSecOrderUploadCombinedShippingInfoRequest.Types.SubOrder.Types;
using Microsoft.AspNetCore.Authorization;
using SKIT.FlurlHttpClient.Wechat.TenpayV3.Events;
using System.Net;
using System.Text;
using NMemory.Data;
using CQIE.FC.NOS.DataAccess.Interfaces;
using Microsoft.Extensions.Logging;
using Org.BouncyCastle.Bcpg;
using System.Net.Http;
using System.Threading.Tasks;
using System.Security.Cryptography;
using Newtonsoft.Json.Linq;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.OpenSsl;
using System.Security.Cryptography.X509Certificates;
using static SKIT.FlurlHttpClient.Wechat.Api.Models.ComponentTCBBatchCreateContainerServiceVersionRequest.Types;
using System.Globalization;
namespace WxPayDemo.Webapi.Controllers
{
/")]
public class PaymentController : ControllerBase
{
private readonly ILogger<PaymentController> _logger;
private readonly IWechatTenpayHttpClientFactory _tenpayHttpClientFactory;
private readonly IWechatApiHttpClientFactory _wechatApiHttpClientFactory;
private readonly IWechatAccessTokenEntityRepository _wechatAccessTokenEntityRepository;
private readonly TenpayOptions _tenpayOptions;
private readonly WechatOptions _wechatOptions;
private IPaymentService _paymentService;
private readonly HttpClient _httpClient;
private readonly RSA _privateKey;
private readonly string _merchantId;
public PaymentController(ILogger<PaymentController> logger, IWechatTenpayHttpClientFactory wechatTenpayHttpClientFactory,
IWechatApiHttpClientFactory wechatApiHttpClientFactory, IWechatAccessTokenEntityRepository wechatAccessTokenEntities,
IOptions<TenpayOptions> tenpayOptions, IOptions<WechatOptions> wechatOptions,
IPaymentService paymentService)
{
_logger = logger;
_tenpayHttpClientFactory = wechatTenpayHttpClientFactory;
_wechatApiHttpClientFactory = wechatApiHttpClientFactory;
_wechatAccessTokenEntityRepository = wechatAccessTokenEntities;
_tenpayOptions = tenpayOptions.Value;
_wechatOptions = wechatOptions.Value;
_paymentService = paymentService;
_httpClient = new HttpClient();
_merchantId = 配置中获取;
} 其他内容稳定，如微信传入电话，openid，金额
#region 预支付生成
public record propay(string Phone,string Openid,int Total);
public async Task<IActionResult> CreatorPreOrder( propay propay)
{
try
{
int total_fee = (int)(propay.Total);
var client = _tenpayHttpClientFactory.Create();
var wechatAccountOptions = _wechatOptions.Accounts?.FirstOrDefault();
var request = new CreatePayTransactionJsapiRequest()
{
OutTradeNumber = OrderNumberGenerator.GenerateOrderNumber(long.Parse(propay.Phone)),
AppId = wechatAccountOptions.AppId,
Description = "创谷餐厅",
NotifyUrl = _tenpayOptions.SucceedNotifyUrl,
Amount = new CreatePayTransactionJsapiRequest.Types.Amount() { Total = total_fee },
Payer = new CreatePayTransactionJsapiRequest.Types.Payer() { OpenId = propay.Openid }
};
var response = await client.ExecuteCreatePayTransactionJsapiAsync(request, cancellationToken: HttpContext.RequestAborted);
if (!response.IsSuccessful())
{
_logger.LogWarning("JSAPI 下单失败（状态码：{0}，错误代码：{1}，错误描述：{2}）。", response.RawStatus, response.ErrorCode, response.ErrorMessage);
return Ok("JSAPI 下单失败");
}
_logger.LogWarning("JSAPI 成功 预支付交易会话标识：{0}", response.PrepayId);
List<IDictionary<string, string>> keyValuePairs = new List<IDictionary<string, string>>();
var paramMap = client.GenerateParametersForJsapiPayRequest(request.AppId, response.PrepayId);
keyValuePairs.Add(paramMap);
IDictionary<string, string> orderdic = new Dictionary<string, string> { { "orderid", request.OutTradeNumber } };
keyValuePairs.Add(orderdic);
return Ok(keyValuePairs);
}
catch (Exception ex)
{
using (StreamWriter sw = new StreamWriter(Path.Combine(Directory.GetCurrentDirectory(), "wwwroot/error.txt"), true))
{
sw.WriteLine(ex.ToString());
}
return Ok(ex.ToString());
}
}
#endregion 结果返回到前端
https://i-blog.csdnimg.cn/blog_migrate/e5ec42dd54794f0a100f8f35171af83c.png
前端进入支付
https://i-blog.csdnimg.cn/blog_migrate/f2c8c438c0afa6c454882626d4660dbb.png
skit未提供获取单号故无法退款，需自己封装
必要的订单号
#region 获取交易单号
public record data(string outTradeNo);
public async Task<IActionResult> Gettransaction_id( data data)
{
// outTradeNo = "23122317444300007285";
string asd = data.outTradeNo;
try
{
var request = new HttpRequestMessage(HttpMethod.Get, $"https://api.mch.weixin.qq.com/v3/pay/transactions/out-trade-no/{asd}?mchid={_merchantId}");
var auth = await BuildAuthAsync1(request);
string value = $"WECHATPAY2-SHA256-RSA2048 {auth}";
request.Headers.Add("Authorization", value);
request.Headers.Add("Accept", "application/json");
request.Headers.Add("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
var response = await _httpClient.SendAsync(request);
if (response.IsSuccessStatusCode)
{
var content = await response.Content.ReadAsStringAsync();
// _logger.LogInformation("订单查询成功：{0}", content);
return Ok(content);
}
else
{
var errorContent = await response.Content.ReadAsStringAsync();
//_logger.LogError("订单查询失败：{0}", errorContent);
return BadRequest(errorContent);
}
}
catch (Exception ex)
{
using (StreamWriter sw = new StreamWriter(Path.Combine(Directory.GetCurrentDirectory(), "wwwroot/error.txt"), true))
{
sw.WriteLine("newpay" + ex.Message);
}
// _logger.LogError("订单查询发生异常：{0}", ex.Message);
return StatusCode(500);
}
}
private async Task<string> BuildAuthAsync1(HttpRequestMessage request)
{
string method = request.Method.ToString();
string body = "";
if (method == "POST" || method == "PUT" || method == "PATCH")
{
var content = request.Content;
body = await content.ReadAsStringAsync();
}
string uri = request.RequestUri.PathAndQuery;
var timestamp = DateTimeOffset.Now.ToUnixTimeSeconds();
string nonceStr = Guid.NewGuid().ToString("N");
string message = BuildMessage1(method, uri, timestamp, nonceStr, body);
string signature = Sign(message);
//自己填写或注入时读取
string serial_no = "";
return $"mchid=\"{_merchantId}\",nonce_str=\"{nonceStr}\",timestamp=\"{timestamp}\",serial_no=\"{serial_no}\",signature=\"{signature}\"";
}
protected string Sign(string message)
{
// 也可从配置文件读取
// NOTE： 私钥不包括私钥文件起始的-----BEGIN PRIVATE KEY-----
// 亦不包括结尾的-----END PRIVATE KEY-----
string privateKey = "";
byte[] keyData = Convert.FromBase64String(privateKey);
var rsa = RSA.Create();
rsa.ImportPkcs8PrivateKey(keyData, out _);
byte[] data = System.Text.Encoding.UTF8.GetBytes(message);
return Convert.ToBase64String(rsa.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));
}
private string BuildMessage1(string method, string uri, long timestamp, string nonceStr, string body)
{
string canonicalUrl = uri;
if (!string.IsNullOrEmpty(Request.QueryString.Value))
{
canonicalUrl += Request.QueryString.Value;
}
return $"{method}\n{canonicalUrl}\n{timestamp}\n{nonceStr}\n{body}\n";
}
#endregion
中间仍有很多细节，暂时无法补充。
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