微信扫码支付,微信扫码支付后怎么查到对方微信号

微信扫码支付,微信扫码支付后怎么查到对方微信号,微信支付教程系列之扫码支付

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Mvc;
using WxPayAPI;
namespace WxPay.Controllers
 public class NativeNotifyController : Controller
 // GET: NativeNotify
 public ActionResult Index()
 string strData = ProcessNotify();
 Response.Write(strData);
 return View();
 public string ProcessNotify()
 WxPayData notifyData = GetNotifyData();
 //检查openid和product_id是否返回
 if (!notifyData.IsSet("openid") || !notifyData.IsSet("product_id"))
 WxPayData res = new WxPayData();
 res.SetValue("return_code", "FAIL");
 res.SetValue("return_msg", "回调数据异常");
 return res.ToXml();
 //调统一下单接口，获得下单结果
 string openid = notifyData.GetValue("openid").ToString();
 string product_id = notifyData.GetValue("product_id").ToString();
 WxPayData unifiedOrderResult = new WxPayData();
 unifiedOrderResult = UnifiedOrder(openid, product_id);
 catch (Exception ex)//若在调统一下单接口时抛异常，立即返回结果给微信支付后台
 WxPayData res = new WxPayData();
 res.SetValue("return_code", "FAIL");
 res.SetValue("return_msg", "统一下单失败");
 return res.ToXml();
 //若下单失败，则立即返回结果给微信支付后台
 if (!unifiedOrderResult.IsSet("appid") || !unifiedOrderResult.IsSet("mch_id") || !unifiedOrderResult.IsSet("prepay_id"))
 WxPayData res = new WxPayData();
 res.SetValue("return_code", "FAIL");
 res.SetValue("return_msg", "统一下单失败");
 return res.ToXml();
 //统一下单成功,则返回成功结果给微信支付后台
 WxPayData data = new WxPayData();
 data.SetValue("return_code", "SUCCESS");
 data.SetValue("return_msg", "OK");
 data.SetValue("appid", WxPayConfig.APPID);
 data.SetValue("mch_id", WxPayConfig.MCHID);
 data.SetValue("nonce_str", WxPayApi.GenerateNonceStr());
 data.SetValue("prepay_id", unifiedOrderResult.GetValue("prepay_id"));
 data.SetValue("result_code", "SUCCESS");
 data.SetValue("err_code_des", "OK");
 data.SetValue("sign", data.MakeSign());
 return data.ToXml();
 /// summary 
 /// 接收从微信支付后台发送过来的数据并验证签名
 /// /summary 
 /// returns 微信支付后台返回的数据 /returns 
 public WxPayData GetNotifyData()
 //接收从微信后台POST过来的数据
 System.IO.Stream s = Request.InputStream;
 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();
 //转换数据格式并验证签名
 WxPayData data = new WxPayData();
 data.FromXml(builder.ToString());
 catch (WxPayException ex)
 //若签名错误，则立即返回结果给微信支付后台
 WxPayData res = new WxPayData();
 res.SetValue("return_code", "FAIL");
 res.SetValue("return_msg", ex.Message);
 return data;
 private WxPayData UnifiedOrder(string openId, string productId)
 //统一下单
 WxPayData req = new WxPayData();
 req.SetValue("body", "广东XXXX股份有限公司");
 req.SetValue("attach", "附加信息,用于后台或者存入数据库,做自己的判断");
 req.SetValue("out_trade_no", WxPayApi.GenerateOutTradeNo());
 req.SetValue("total_fee", 1);
 req.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
 req.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));
 req.SetValue("goods_tag", "商品的备忘,可以自定义");
 req.SetValue("trade_type", "NATIVE");
 req.SetValue("openid", openId);
 req.SetValue("product_id", productId);
 WxPayData result = WxPayApi.UnifiedOrder(req);
 return result;
}

 

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