c# .net core 微信、支付宝H5支付链接获取，支付回调方法，退款方法小计

发布：2023/3/28 20:25:55作者：管理员来源：本站浏览次数：679

支付链接获取

//隐藏代码：获取一个订单model实体，并判断此订单是否发起过支付链接吊起，如发起过且链接没过期，则直接返回支付链接(仅限微信)

if (//隐藏代码：判断是否为待付款)

{

switch (dto.PayType)

{

case //阿里:

return new DtoView.PostCreatePayOrder() { Url = _aliPay_H5.GetPayForm(model.TotalPrice, model.OrderNumber, "商城订单"), HandlerUrl = "" };

case //微信:

if (string.IsNullOrEmpty(model.WXPayUrl) || (model.WXPayUrlCreateTime!=null && DateTime.Now.Subtract(model.WXPayUrlCreateTime.Value).TotalMinutes>=5)) {

List<string> urlList = _wxPay_H5.UnifiedorderH5Async(model.TotalPrice, model.OrderNumber,ip, "商城订单").Result;

if (urlList == null || urlList.Count != 2) {

throw new Ex.ParameterException("微信支付链接生成错误");

}

//隐藏代码：更新订单实体中的支付状态和支付链接，下一次吊起支付可以用这次的支付链接，不必重复获取

}

return new DtoView.PostCreatePayOrder() { Url = model.WXPayUrl,HandlerUrl= model.WXPayHandlerUrl };

default:

throw new Ex.ParameterException("支付平台类型参数错误");

}

throw new Ex.ParameterException("订单信息错误或已支付");

支付宝支付退款公共方法

using Alipay.AopSdk.Core;

using Alipay.AopSdk.Core.Domain;

using Alipay.AopSdk.Core.Request;

using Alipay.AopSdk.Core.Response;

using Alipay.AopSdk.Core.Util;

using Microsoft.Extensions.Options;

using System;

using System.Collections.Generic;

using System.Text;

namespace Test.Application.Common.AliPay

{

public class AliPay_H5

{

private readonly AliPay.AliOption _aliOption;

public AliPay_H5(IOptions<AliPay.AliOption> aliOption)

{

_aliOption = aliOption.Value;

}

/// <summary>

/// 获取支付宝H5支付表单

/// </summary>

/// <param name="totalfee"></param>

/// <param name="orderNo"></param>

/// <param name="description"></param>

/// <returns></returns>

public string GetPayForm(decimal totalfee, string orderNo, string description) {

DefaultAopClient client = new DefaultAopClient(_aliOption.Ali_GatewayUrl, _aliOption.Ali_AppID, _aliOption.Ali_PrivateKey, "json", "1.0", "RSA2", _aliOption.Ali_PublicKey, "UTF-8", false);

// 组装业务参数model

AlipayTradeWapPayModel model = new AlipayTradeWapPayModel();

model.Body = description;

model.Subject = "收款方";

model.TotalAmount = totalfee.ToString();

model.OutTradeNo = orderNo;

model.ProductCode = "QUICK_WAP_WAY";

model.QuitUrl = _aliOption.Ali_QuitUrl;

AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();

// 设置支付完成同步回调地址

request.SetReturnUrl(_aliOption.Ali_ReturnUrl);

// 设置支付完成异步通知接收地址

request.SetNotifyUrl(_aliOption.Ali_NOTIFY_URL);

// 将业务model载入到request

request.SetBizModel(model);

AlipayTradeWapPayResponse response = null;

response = client.PageExecute(request, null, "post");

LogHelper.Info("支付宝获取支付订单返回：" + response.Body);

return response.Body;

}

/// <summary>

/// 验证回调数据

/// </summary>

/// <param name="sArray"></param>

/// <returns></returns>

public bool ValidationPayNotify(Dictionary<string, string> sArray) {

bool checkR= AlipaySignature.RSACheckV1(sArray, _aliOption.Ali_PublicKey, "UTF-8", "RSA2", false);

return checkR;

}

/// <summary>

/// 支付宝退款

/// </summary>

/// <param name="orderNo"></param>

/// <param name="refundNo"></param>

/// <param name="refund"></param>

/// <param name="total"></param>

/// <param name="reason"></param>

/// <returns></returns>

public string Refund(string orderNo, string refundNo, decimal refund, decimal total, string reason) {

DefaultAopClient client = new DefaultAopClient(_aliOption.Ali_GatewayUrl, _aliOption.Ali_AppID, _aliOption.Ali_PrivateKey, "json", "1.0", "RSA2", _aliOption.Ali_PublicKey, "UTF-8", false);

AlipayTradeRefundModel model = new AlipayTradeRefundModel();

model.OutTradeNo = orderNo;

model.TradeNo = "";

model.RefundAmount = refund.ToString();

model.RefundReason = reason;

model.OutRequestNo = refundNo;

AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();

request.SetBizModel(model);

AlipayTradeRefundResponse response = null;

response = client.Execute(request);

LogHelper.Info("支付宝订单退款返回：" + response.Body);

return response.Body;

}

public void CloseOrder(string orderNo) {

DefaultAopClient client = new DefaultAopClient(_aliOption.Ali_GatewayUrl, _aliOption.Ali_AppID, _aliOption.Ali_PrivateKey, "json", "1.0", "RSA2", _aliOption.Ali_PublicKey, "UTF-8", false);

AlipayTradeCloseModel model = new AlipayTradeCloseModel();

model.OutTradeNo = orderNo;

model.TradeNo = "";

AlipayTradeCloseRequest request = new AlipayTradeCloseRequest();

request.SetBizModel(model);

AlipayTradeCloseResponse response = null;

response = client.Execute(request);

LogHelper.Info("支付宝关闭订单返回：" + response.Body);

}

public class AliOption : IOptions<AliOption>

{

AliOption IOptions<AliOption>.Value => this;

public string Ali_AppID { get; set; }

public string Ali_GatewayUrl { get; set; }

public string Ali_PrivateKey { get; set; }

public string Ali_PublicKey { get; set; }

public string Ali_NOTIFY_URL { get; set; }

public string Ali_REFUNDNOTIFY_URL { get; set; }

public string Ali_QuitUrl { get; set; }

public string Ali_ReturnUrl { get; set; }

}

微信支付退款公共方法

using Microsoft.AspNetCore.Hosting;

using Microsoft.Extensions.Options;

using Org.BouncyCastle.Crypto.Engines;

using Org.BouncyCastle.Crypto.Modes;

using Org.BouncyCastle.Crypto.Parameters;

using System;

using System.Collections.Generic;

using System.Net.Http;

using System.Security.Cryptography;

using System.Security.Cryptography.X509Certificates;

using System.Text;

using System.Text.RegularExpressions;

using System.Threading;

using System.Threading.Tasks;

namespace Test.Application.Common.WxPay

{

public class WxPay_H5

{

private HttpClient _client { get; }

private readonly WxPay.WeiXinOption _weiXinOption;

private readonly IWebHostEnvironment _webHostEnvironment;

private readonly string BaseAddress = "https://api.mch.weixin.qq.com";

public WxPay_H5(HttpClient client, IOptions<WxPay.WeiXinOption> weChatOptions, IWebHostEnvironment webHostEnvironment)

{

// GitHub API versioning

client.DefaultRequestHeaders.Add("Accept",

"application/json");

// GitHub requires a user-agent

client.DefaultRequestHeaders.Add("User-Agent",

"HttpClientFactory-Sample");

_client = client;

_weiXinOption = weChatOptions.Value;

_webHostEnvironment = webHostEnvironment;

}

/// <summary>

/// H5下单

/// </summary>

/// <param name="totalfee">支付金额，单位:分</param>

/// <param name="orderNo">订单号</param>

/// <param name="description">商品描述</param>

/// <returns></returns>

public async Task<List<string>> UnifiedorderH5Async(decimal totalfee, string orderNo, string description, string ip)

{

H5Pay h5Pay = new H5Pay() { appid = _weiXinOption.WX_AppID, mchid = _weiXinOption.WX_mch_ID, description = description, out_trade_no = orderNo, notify_url = _weiXinOption.WX_NOTIFY_URL, amount = new Amount { total = (int)(totalfee * 100) }, scene_info = new Scene_Info { payer_client_ip = ip, h5_info = new H5_Info { type = "Wap" } } };

var param = Newtonsoft.Json.JsonConvert.SerializeObject(h5Pay);

var json = await Post(param, "/v3/pay/transactions/h5");

LogHelper.Info("微信支付创建订单微信返回：" + json);

if (json.Contains("h5_url"))

json = Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(json)["h5_url"];

return await GetHandleUrl(json);

}

/// <summary>

/// H5查询订单

/// </summary>

/// <param name="out_trade_no"></param>

/// <returns></returns>

public async Task<string> GetOrderH5Async(string out_trade_no)

{

var json = await Get($"/v3/pay/transactions/out-trade-no/{out_trade_no}?mchid=" + _weiXinOption.WX_mch_ID);

return json;

}

/// <summary>

/// H5关闭订单

/// </summary>

/// <returns></returns>

public async Task CloseOrderH5Async(string orderNo)

{

H5PayClose h5PayClose = new H5PayClose() { mchid = _weiXinOption.WX_mch_ID };

var param = Newtonsoft.Json.JsonConvert.SerializeObject(h5PayClose);

await Post(param, $"/v3/pay/transactions/out-trade-no/{orderNo}/close");

}

/// <summary>

/// H5订单退款

/// </summary>

/// <param name="orderNo"></param>

/// <param name="refundNo"></param>

/// <param name="refund"></param>

/// <param name="total"></param>

/// <param name="reason"></param>

/// <returns></returns>

public async Task<string> RefundH5Async(string orderNo, string refundNo, decimal refund, decimal total, string reason)

{

H5PayRefund h5PayRefund = new H5PayRefund() { out_trade_no = orderNo, out_refund_no = refundNo, notify_url = _weiXinOption.WX_REFUNDNOTIFY_URL, amount = new RefundAmount { total = (int)(total * 100), refund = (int)(refund * 100), currency = "CNY" } };

var param = Newtonsoft.Json.JsonConvert.SerializeObject(h5PayRefund);

LogHelper.Info("微信订单退款参数：" + param);

var json = await Post(param, "/v3/refund/domestic/refunds");

LogHelper.Info("微信订单退款返回：" + json);

if (json.Contains("status"))

json = Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(json)["status"];

return json;

}

public class H5Pay

{

public string mchid { get; set; }

public string out_trade_no { get; set; }

public string appid { get; set; }

public string description { get; set; }

public string notify_url { get; set; }

public Amount amount { get; set; }

public Scene_Info scene_info { get; set; }

}

public class H5PayClose

{

public string mchid { get; set; }

}

#region 退款

public class H5PayRefund

{

/// <summary>

/// 商户订单号

/// </summary>

public string out_trade_no { get; set; }

/// <summary>

/// 商户退款单号

/// </summary>

public string out_refund_no { get; set; }

/// <summary>

/// 退款原因（非必填）

/// </summary>

//public string reason { get; set; }

/// <summary>

/// 退款结果回调url （非必填）

/// </summary>

public string notify_url { get; set; }

/// <summary>

/// 退款金额

/// </summary>

public RefundAmount amount { get; set; }

}

/// <summary>

/// 退款金额

/// </summary>

public class RefundAmount

{

/// <summary>

/// refund

/// </summary>

public int refund { get; set; }

/// <summary>

/// 原订单金额

/// </summary>

public int total { get; set; }

/// <summary>

/// 退款币种（CNY）

/// </summary>

public string currency { get; set; }

}

/// <summary>

/// 指定商品

/// </summary>

public class GoodsDetailListObj

{

/// <summary>

/// 商户侧商品编码

/// </summary>

public string merchant_goods_id { get; set; }

/// <summary>

/// 微信侧商品编码（非必填）

/// </summary>

public string wechatpay_goods_id { get; set; }

/// <summary>

/// 商品名称（非必填）

/// </summary>

public string goods_name { get; set; }

/// <summary>

/// 商品单价

/// </summary>

public int unit_price { get; set; }

/// <summary>

/// 商品退款金额

/// </summary>

public int refund_amount { get; set; }

/// <summary>

/// 商品退货数量

/// </summary>

public int refund_quantity { get; set; }

}

#endregion

public class Amount

{

public int total { get; set; }

public string currency { get; set; } = "CNY";

}

public class Scene_Info

{

public string payer_client_ip { get; set; }

public H5_Info h5_info { get; set; }

}

public class H5_Info

{

public string type { get; set; }

}

public async Task<string> Post(string jsonData, string url)

{

CreateSign("POST", url, jsonData);

var postData = new StringContent(jsonData, Encoding.UTF8, "application/json");

var response = await _client.PostAsync(BaseAddress + url, postData);

LogHelper.Info("微信请求结果：" + response);

response.EnsureSuccessStatusCode();

return await response.Content.ReadAsStringAsync();

}

public async Task<string> Get(string url)

{

CreateSign("GET", url, "");

var response = await _client.GetAsync(BaseAddress + url);

response.EnsureSuccessStatusCode();

return await response.Content.ReadAsStringAsync();

}

/// <summary>

/// 创建签名

/// </summary>

/// <param name="method"></param>

/// <param name="uri"></param>

/// <param name="body"></param>

private void CreateSign(string method, string uri, string body)

{

string nonce_str = Guid.NewGuid().ToString();

string timestamp = (Tools.UnicodeConvert.ConvertDateTimeInt(DateTime.Now) + "").Substring(0, 10);

string message = $"{method}\n{uri}\n{timestamp}\n{nonce_str}\n{body}\n";

string signature = Tools.CertificateHelper.Sign(message, _webHostEnvironment.ContentRootPath + "\\" + _weiXinOption.WX_Certificate, _weiXinOption.WX_mch_ID);

_client.DefaultRequestHeaders.Add("Authorization", $"WECHATPAY2-SHA256-RSA2048 mchid=\"{_weiXinOption.WX_mch_ID}\",serial_no=\"{_weiXinOption.WX_Serial_No}\",nonce_str=\"{nonce_str}\",timestamp=\"{timestamp}\",signature=\"{signature}\"");

}

/// <summary>

/// 获取解密后的数据

/// </summary>

/// <param name="associatedData"></param>

/// <param name="nonce"></param>

/// <param name="ciphertext"></param>

/// <returns></returns>

public string AesGcmDecrypt(string associatedData, string nonce, string ciphertext)

{

GcmBlockCipher gcmBlockCipher = new GcmBlockCipher(new AesEngine());

AeadParameters aeadParameters = new AeadParameters(

new KeyParameter(Encoding.UTF8.GetBytes(_weiXinOption.WX_AppSecret)),

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);

}

/// <summary>

/// 获取处理后的支付链接（不获取安卓程序内置浏览器吊起错误）

/// </summary>

/// <param name="oldUrl"></param>

/// <returns></returns>

public async Task<List<string>> GetHandleUrl(string oldUrl) {

List<string> urlList = new List<string>();

HttpClient httpClient = new HttpClient();

httpClient.DefaultRequestHeaders.Add("Host", "wx.tenpay.com");

httpClient.DefaultRequestHeaders.Add("Accept-Language", "en, zh-CN; q=0.8,zh; q=0.6,en-US; q=0.4");

httpClient.DefaultRequestHeaders.Add("Accept", "text/html,application/xhtml+xml,application/xml");

httpClient.DefaultRequestHeaders.Add("Upgrade-Insecure-Requests", "1");

string[] urls = _weiXinOption.WX_NOTIFY_URL.Split('/');

httpClient.DefaultRequestHeaders.Add("Referer", "http://" + urls[2] + "/");

var response = await httpClient.GetAsync(oldUrl);

response.EnsureSuccessStatusCode();

var json = await response.Content.ReadAsStringAsync();

string pattern = "\"weixin(.*?)\"";

Regex regex = new Regex(pattern);

Match matcher = regex.Match(json);

if (matcher.Success) {

if (matcher.Groups.Count > 0) {

urlList.Add(oldUrl);

urlList.Add(matcher.Groups[0].Value.Substring(1, matcher.Groups[0].Value.Length - 2));

}

return urlList;

}

public class WeiXinOption: IOptions<WeiXinOption>

{

WeiXinOption IOptions<WeiXinOption>.Value => this;

public string WX_AppID { get; set; }

public string WX_AppSecret { get; set; }

public string WX_mch_ID { get; set; }

public string WX_IP { get; set; }

public string WX_NOTIFY_URL { get; set; }

public string WX_REFUNDNOTIFY_URL { get; set; }

public string WX_Certificate { get; set; }

public string WX_Serial_No { get; set; }

}

支付宝支付回调

/// <summary>

/// 支付宝支付完成回调(后台用)

/// </summary>

public dynamic CallBack()

{

var coll = Request.Form;

List<string> requestItem = coll.Keys.ToList();

Dictionary<string, string> sArray = new Dictionary<string, string>();

foreach (var item in requestItem)

{

sArray.Add(item, Request.Form[item]);

}

string strr = "";

foreach (var item in sArray)

{

strr +="Key="+ item.Key + ";Value=" + item.Value + ";";

}

if (_aliPay_H5.ValidationPayNotify(sArray)){

string RechargeTime = sArray.GetValueOrDefault("gmt_payment");

string RechargeMoney = sArray.GetValueOrDefault("total_amount");

string RechargeNo = sArray.GetValueOrDefault("out_trade_no");

decimal price = decimal.Zero;

if (!decimal.TryParse(RechargeMoney, out price))

{

//支付宝支付回调失败

return new

{

code = "ERROR",

message = Common.Enums.StateEnum.ShopPayNoticeState.PriceChangeError.GetDescription()

};

}

int payType = (int)Common.Enums.TypeEnum.ShopOrderPayType.Ali;

DateTime payTime = DateTime.Now;

if (RechargeTime.Contains("T"))

{

RechargeTime = RechargeTime.Replace('T', ' ');

if (!DateTime.TryParse(RechargeTime, out payTime))

{

//支付宝支付回调失败

return new

{

code = "ERROR",

message = Common.Enums.StateEnum.ShopPayNoticeState.TimeChangeError.GetDescription()

};

}

return TestCB(RechargeNo, "", price, payType, payTime);

}

return "验证失败";

}

///<summary>

///支付宝微信支付完成回调通用业务处理方法

///</summary>

private dynamic TestCB(string orderNumber, string TransactionId, decimal price, int payType,DateTime payTime) {

//隐藏代码：用orderNumber获取订单实体并判断price数据是否正确

if (payType == (int)Common.Enums.TypeEnum.ShopOrderPayType.Ali)

{

return "success";

}

else {

return new

{

code = "SUCCESS",

message = ""

};

}

微信支付退款回调

/// <summary>

/// 微信支付完成回调(后台用)

/// </summary>

public dynamic PayCB()

{

#region

var syncIOFeature = HttpContext.Features.Get<IHttpBodyControlFeature>();

if (syncIOFeature != null)

{

syncIOFeature.AllowSynchronousIO = true;

}

#endregion

System.IO.Stream s = HttpContext.Request.Body;

int count = 0;

byte[] buffer = new byte[1024];

StringBuilder builder = new StringBuilder();

while ((count = s.Read(buffer, 0, 1024)) > 0)

{

builder.Append(Encoding.UTF8.GetString(buffer, 0, count));

}

s.Flush();

s.Close();

s.Dispose();

string notDeStr = builder;

JObject notDeObj = JObject.Parse(notDeStr);

string ciphertext = notDeObj["resource"]["ciphertext"].ToString();

string associatedData = notDeObj["resource"]["associated_data"].ToString();

string nonce = notDeObj["resource"]["nonce"].ToString();

string deData = _wxPay_H5.AesGcmDecrypt(associatedData,nonce, ciphertext);

JObject deObj = JObject.Parse(deData);

string RechargeMoney = deObj["amount"]["payer_total"].ToString();

string RechargeTime = deObj["success_time"].ToString();

string RechargeNo = deObj["out_trade_no"].ToString();

string TransactionId = deObj["transaction_id"].ToString();

decimal price = decimal.Zero;

if (decimal.TryParse(RechargeMoney, out price))

{

price = price / 100;

}

else

{

//微信支付回调失败转换金额失败

return new

{

code = "ERROR",

message = Common.Enums.StateEnum.ShopPayNoticeState.PriceChangeError.GetDescription()

};

}

int payType = (int)Common.Enums.TypeEnum.ShopOrderPayType.WX;

DateTime payTime = DateTime.Now;

if (RechargeTime.Contains("T"))

{

RechargeTime = RechargeTime.Replace('T', ' ');

if (!DateTime.TryParse(RechargeTime, out payTime))

{

//微信支付回调失败-转换时间失败

return new

{

code = "ERROR",

message = Common.Enums.StateEnum.ShopPayNoticeState.TimeChangeError.GetDescription()

};

}

return TestCB(RechargeNo, TransactionId, price, payType, payTime);

}

/// <summary>

/// 微信退款回调(后台用)

/// </summary>

public dynamic TKCB()

{

//获取回调POST过来的xml数据的代码

#region

//.net core 3.0以后需加下边这段，否则Stream会报错

var syncIOFeature = HttpContext.Features.Get<IHttpBodyControlFeature>();

if (syncIOFeature != null)

{

syncIOFeature.AllowSynchronousIO = true;

}

#endregion

//接收从微信后台POST过来的数据

System.IO.Stream s = HttpContext.Request.Body;

int count = 0;

byte[] buffer = new byte[1024];

StringBuilder builder = new StringBuilder();

while ((count = s.Read(buffer, 0, 1024)) > 0)

{

builder.Append(Encoding.UTF8.GetString(buffer, 0, count));

}

s.Flush();

s.Close();

s.Dispose();

string notDeStr = builder;

JObject notDeObj = JObject.Parse(notDeStr);

string ciphertext = notDeObj["resource"]["ciphertext"].ToString();

string associatedData = notDeObj["resource"]["associated_data"].ToString();

string nonce = notDeObj["resource"]["nonce"].ToString();

string deData = _wxPay_H5.AesGcmDecrypt(associatedData, nonce, ciphertext);

JObject deObj = JObject.Parse(deData);

string RefundTime = deObj["success_time"].ToString();

string OrderNumber = deObj["out_trade_no"].ToString();

string RefundNo = deObj["out_refund_no"].ToString();

int payType = (int)Common.Enums.TypeEnum.ShopOrderPayType.WX;

DateTime refundTime = DateTime.Now;

if (RefundTime.Contains("T"))

{

RefundTime = RefundTime.Replace('T', ' ');

if (!DateTime.TryParse(RefundTime, out refundTime))

{

//微信支付回调失败-订单号：" + OrderNumber + "，错误类型：转换时间失败" + RefundTime

return new

{

code = "ERROR",

message = Common.Enums.StateEnum.ShopRefundNoticeState.TimeChangeError.GetDescription()

};

}

//隐藏业务代码，判断参数是否正确，订单是否正确

return new

{

code = "SUCCESS",

message = ""

};

}

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