如何使用支付宝进行付款和退款

桃扇骨 2022-05-13 14:54 173阅读 0赞

> 注意：在写代码之前记得添加支付宝示例demo里面的AopSdk.dll文件到项目里，并且在项目里引用它

using AlipayDemo;
    using Aop.Api;
    using Aop.Api.Domain;
    using Aop.Api.Request;
    using Aop.Api.Response;
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.Mvc;
    using Newtonsoft.Json;
    
    namespace WebApplication1.Controllers
    {
        public class AlipayController : Controller
        {
            // GET: Alipay
            public ActionResult Index()
            {
                return View();
            }
            /// <summary>
            /// 付款
            /// </summary>
            /// <param name="coll">表单集合</param>
            /// <returns></returns>
            [HttpPost]
            public ActionResult Index(FormCollection coll)
            {
                double totalAmount = Convert.ToDouble(coll["TotalAmount"]);
                //实例化默认的DefaultAopClient
                DefaultAopClient aop = new DefaultAopClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.private_key, "json", "1.0", AlipayConfig.sign_type, AlipayConfig.public_key, AlipayConfig.charset);//AlipayConfig.charset可写可不写,默认为UTF-8
                // 组装业务参数model
                AlipayTradePagePayModel model = new AlipayTradePagePayModel();
                //商品描述
                model.Body = "喜欢小花花";
                //订单名称
                model.Subject = "小花花是女孩子";
                //转账金额(精确到小数点两位)
                model.TotalAmount = totalAmount.ToString();
                //商品唯一编号（订单号）
                model.OutTradeNo = Guid.NewGuid().ToString().Replace("-", "").ToLower();
                //支付类型（电脑网站支付的类型）
                model.ProductCode = "FAST_INSTANT_TRADE_PAY";
    
                //支付宝请求
                AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();
                // 设置异步通知接收地址   支付成功后的跳转页面
                request.SetNotifyUrl("http://localhost:57812/Alipay/Success");
                //封装支付宝模型到请求对象中
                request.SetBizModel(model);
                //设置同步回调地址
                request.SetReturnUrl("");
    
                // 将业务model载入到request 支付宝响应
                AlipayTradePagePayResponse response = null;
                response = aop.pageExecute(request, null, "post");
           
                Response.Write(response.Body);
                return View();
            }
    
    
            public ActionResult Success()
            {
                return View();
            }
            /// <summary>
            /// 退款
            /// </summary>
            /// <returns></returns>
            [HttpPost]
            public ActionResult Refund(FormCollection coll)
            {
                DefaultAopClient aop = new DefaultAopClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.private_key, "json", "1.0", AlipayConfig.sign_type, AlipayConfig.public_key, AlipayConfig.charset);//AlipayConfig.charset可写可不写,默认为UTF-8
                AlipayTradeRefundModel model = new AlipayTradeRefundModel();
    
                //订单支付时传入的商户订单号,不能和 trade_no同时为空。
                model.OutTradeNo = coll["OutTradeNo"];
                // 支付宝交易号，和商户订单号不能同时为空   订单号
                model.TradeNo = coll["TradeNo"];
                //需要退款的金额，该金额不能大于订单金额,单位为元，支持两位小数
                model.RefundAmount = coll["RefundAmount"];
                //	退款的原因说明(可选)
                model.RefundReason = coll["RefundReason"];
                // 退款单号，同一笔多次退款需要保证唯一，部分退款该参数必填。
                model.OutRequestNo = "";
    
                //支付宝请求
                AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
                request.SetBizModel(model);
    
                AlipayTradeRefundResponse response = aop.Execute(request);
                //  Response.Write(response.Body);
                if (response.Msg == "Success" && response.Code == "10000")
                {
                    Response.Write("<h2>退款成功</h2>");
                }
                else
                {
                    Response.Write("<h2>退款失败</h2>");
                }
    
                return View();
            }
        }
    }

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    
    namespace AlipayDemo
    {
        public class AlipayConfig
        {
            /// <summary>
            /// 应用id，我的appid
            /// </summary>
            public static string app_id = "";
            /// <summary>
            /// 支付宝网关
            /// </summary>
            public static string gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
            /// <summary>
            ///  商户私钥，您的原始格式RSA私钥
            /// </summary>
            public static string private_key = "";
    
            /// <summary>
            /// 支付宝公钥,查看地址：https://openhome.alipay.com/platform/keyManage.htm 对应APPID下的支付宝公钥。、
            /// </summary>
            public static string public_key = "";
            /// <summary>
            /// 签名方式
            /// </summary>
            public static string sign_type = "RSA2";
            /// <summary>
            /// 编码格式
            /// </summary>
            public static string charset = "utf-8";
    
        }
    }

@{
        ViewBag.Title = "Index";
    }
        <form method="post">
            <input type="text" name="TotalAmount" />
            <input type="submit" value="付款" />
        </form>

@{
        ViewBag.Title = "Success";
    }
    <div>
        <h1>支付成功！</h1>
    </div>
    <div class="clearfix"></div>
    <form method="post" action="/Alipay/Refund">
        商户号：<input type="text" name="OutTradeNo"  /><br /><br />
        订单号：<input type="text" name="TradeNo"  /><br /><br />
        总金额：<input type="text" name="RefundAmount"  /><br /><br />
        退款原因: <textarea name="RefundReason"></textarea><br /><br />
        <input type="submit" value="退款" />
    </form>