写本文章的目的是为了记录工作中遇到的问题，方便以后遇到可以迅速解决问题
H5手机网站接入支付宝的支付接口，推荐使用支付宝提供的SDK来快速开发
我使用的是SDK开发
引用命名空间
using Aop.Api; using Aop.Api.Request; using Aop.Api.Response; using Aop.Api.Util;
首页需要定义一些常量
static string serverUrl = "https://openapi.alipaydev.com/gateway.do";
static string app_id = "**"; //开发者的应用ID
static string format = "JSON";
static string charset = "utf-8";
static string sign_type = "RSA2"; //签名格式
static string version = "1.0";
string UID = "2088102169707816";//卖家支付宝账户号
//商户私钥
static string merchant_private_key = "***";
//支付宝公钥
static string alipay_public_key = "***";
这里的app_id,merchant_private_key,alipay_public_key 我就没有列出来了，获取的方法需要自己去支付宝平台完成一些操作进行获取
在用户点击网站付款时，我们需要唤醒支付宝，来进行支付
public string H5RequestPayWay(OrderPO order)
{
IAopClient client = new DefaultAopClient(serverUrl, app_id, merchant_private_key, format, version, sign_type, alipay_public_key, charset, false);
AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();
string address= "http://m." + PathLogic1.RootDomain;
request.SetReturnUrl(address+ "/WebPay/AlipayPayResult");//同步请求
request.SetNotifyUrl(address + "/WebPay/AsyncPay");//异步请求
var lstDetail = Context.Data.OrderDetail.Where(x => x.OrderNo == order.OrderNo).ToSelectList(x=>new { x.SkuName});
StringBuilder sb = new StringBuilder();
for (int i = 0; i < lstDetail.Count(); i++)
{
sb.Append(lstDetail[i].SkuName + ",");
}
request.BizContent = "{" +
"\"body\":\""+sb.ToString().Substring(0,sb.Length-1)+"\"," +
"\"subject\":\"袋鼠巴巴商品支付\"," +
"\"out_trade_no\":\""+order.OrderNo+"\"," +
"\"timeout_express\":\"90m\"," +
"\"total_amount\":"+(order.TotalAmount.Value+order.TotalFreight.Value)+"," +
"\"product_code\":\"QUICK_WAP_PAY\"" +
" }";//这里填写一些发送给支付宝的一些参数
AlipayTradeWapPayResponse response = client.pageExecute(request);
return response.Body;//这里会发送一个表单输出到页面中
}
具体发送给支付宝的参数，自行去查看
执行上面方法后，买家输入自己的支付宝账号密码进行支付，支付成功的结果，支付宝会以post的方式异步请求你的SetNotifyUrl的地址
这个SetNotifyUrl的地址必须要外网可以访问，支付宝的请求才能进来
买家支付成功，商家修改订单状态和数据库的操作，都在异步请求中执行
同步请求
public ActionResult AlipayPayResult()
{
ViewBag.result = "success";
return View("PayResult");
}
/// <summary> /// 验证通知数据的正确性 /// </summary> /// <param name="out_trade_no"></param> /// <param name="total_amount"></param> /// <param name="seller_id"></param> /// <returns></returns> private SortedDictionary<string, string> GetRequestPost()
{
int i = 0;
SortedDictionary<string, string> sArray = new SortedDictionary<string, string>();
NameValueCollection coll;
//Load Form variables into NameValueCollection variable.
coll = Request.Form;
// Get names of all forms into a string array.
String[] requestItem = coll.AllKeys;
for (i = 0; i < requestItem.Length; i++)
{
sArray.Add(requestItem[i], Request.Form[requestItem[i]]);
}
return sArray;
}
/// <summary>
/// 验签
/// </summary>
/// <param name="inputPara"></param>
/// <returns></returns>
public Boolean Verify(SortedDictionary<string, string> inputPara)
{
Dictionary<string, string> sPara = new Dictionary<string, string>();
Boolean verifyResult = AlipaySignature.RSACheckV1(inputPara, alipay_public_key, charset,sign_type,false);
return verifyResult;
}
异步请求：
[HttpPost]
public void AsyncPay()
{
SortedDictionary<string, string> sPara = GetRequestPost();//将post请求过来的参数传化为SortedDictionary
if (sPara.Count > 0)
{
AlipayTradeWayPayServer pay = new AlipayTradeWayPayServer();
Boolean VerifyResult = pay.Verify(sPara);//验签if (VerifyResult)
{
try
{
//商户订单号
string out_trade_no = Request.Form["out_trade_no"];
//支付宝交易号
string trade_no = Request.Form["trade_no"];
//支付金额
decimal total_amount = Request.Form["total_amount"].ConvertType(Decimal.Zero);
//实收金额
//decimal receipt_amount = Request.Form["receipt_amount"].ConvertType(Decimal.Zero);
//交易状态
string trade_status = Request.Form["trade_status"];
//卖家支付宝账号
string seller_id = Request.Form["seller_id"];
//商品描述
string body = Request.Form["body"];
//交易创建时间
DateTime gmt_create = DateTime.Parse(Request.Form["gmt_create"]);
//交易付款时间
DateTime gmt_payment = DateTime.Parse(Request.Form["gmt_payment"]);
string appid = Request.Form["app_id"];
WriteError("验证参数开始");
Boolean DataValidity = pay.CheckInform(out_trade_no, total_amount, seller_id, appid);//商家判断参数时候是否匹配if (DataValidity)
{
if (Request.Form["trade_status"] == "TRADE_FINISHED")
{
AlipayWayPayPO model = CreateAlipayWayPay(out_trade_no, trade_no, trade_status, gmt_create, gmt_payment);
pay.PaySuccess(out_trade_no, model);//修改订单
//注意：
//退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
}
else if (Request.Form["trade_status"] == "TRADE_SUCCESS")
{
AlipayWayPayPO model = CreateAlipayWayPay(out_trade_no, trade_no, trade_status, gmt_create, gmt_payment);
pay.PaySuccess(out_trade_no, model);//修改订单
//注意：
//付款完成后，支付宝系统发送该交易状态通知
}
else
{
}
//——请根据您的业务逻辑来编写程序（以上代码仅作参考）——
Response.Write("success"); //请不要修改或删除
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
}
}
catch (Exception ex)
{
}
}
else//验证失败
{
Response.Write("fail");
}
}
else
{
Response.Write("无通知参数");
}
}
来源：https://www.cnblogs.com/Alex80/p/11055855.html