测试扫描支付功能

 1  　　　　private Dictionary<string, object> WeixinPayTest(string body, string attach, string out_trade_no, int total_fee, long product_id)
 2         {
 3             string url = "http://spdbapi.ulopay.com/pay/unifiedorder";//浦发银行测试获取支付二维码地址
 4             Dictionary<string, object> dict = new Dictionary<string, object>();
 5             string userip = System.Web.HttpContext.Current.Request.UserHostAddress;//获取用户IP
 6             if (userip == "::1")
 7             {
 8                 userip = "127.0.0.1";
 9             }
10
11             Dictionary<string, string> dicts = new Dictionary<string, string>();
12             dicts.Add("body", "测试购买商品");//说明
13             dicts.Add("mch_id", "26206409");//商户号
14             dicts.Add("nonce_str", "ibuaiVcKdpRxkhJA");//随机数，不能超过32位
15             dicts.Add("notify_url", "http://www.baidu.com/");//支付完返回地址
16             dicts.Add("out_trade_no", out_trade_no);//订单号
17             dicts.Add("spbill_create_ip", userip);
18             dicts.Add("total_fee", "1");//支付金额
19             dicts.Add("trade_type", "trade.weixin.native");//类型，这里是微信二维码扫描
20             //生成签名
21             StringBuilder str = new StringBuilder();
22             str.Append("body=测试购买商品");//商品或支付单简要描述
23             str.Append("&mch_id=26206409");//商户号ID
24             str.Append("&nonce_str=ibuaiVcKdpRxkhJA");//随机数，不能超过32位
25             str.Append("&notify_url=http://www.baidu.com/");
26             str.Append("&out_trade_no=" + out_trade_no);
27             str.Append("&spbill_create_ip=" + userip);
28             str.Append("&total_fee=1");
29             str.Append("&trade_type=trade.weixin.native");
30             str.Append("&key=e5ffcbcede5216753749a976ccef4202");//key
31             string sign = BLL.Common.Utils.MD5(str.ToString());
32             dicts.Add("sign", sign.ToUpper());
33             //制作简单xml
34             StringBuilder sb = new StringBuilder();
35             sb.Append("<xml>");
36             foreach (var k in dicts)
37             {
38                 sb.Append("<" + k.Key + ">" + k.Value + "</" + k.Key + ">");
39             }
40             sb.Append("</xml>");
41             string data = sb.ToString();
42             WebRequestHelper req = new WebRequestHelper(url, data, Encoding.GetEncoding("utf-8"));
43             req.Accept = "application/xml";
44             req.ContentType = "application/xml;charset=utf-8";//输出xml格式和utf-8
45             string res = req.PostRequest();//获取放回值
46             if (res == "")
47                 return null;
48             NameValueCollection list = GetXmlFieldList(res);//把返回的xml转换为键值对形式
49             if (list["return_code"] == "SUCCESS" && list["result_code"] == "SUCCESS")
50             {
51                 dict.Add("url", "/pay/GetPayQRCode.ashx?data=" + Web.UI.Fun.Utils.DESEncrypt(list["code_url"]));
52                 dict.Add("code", 0);
53             }
54
55             return dict;
56         }
57
58         private NameValueCollection GetXmlFieldList(string res)
59         {
60             XmlDocument doc = new XmlDocument();
61             doc.LoadXml(res);
62             XmlNode root = doc.SelectSingleNode("xml");
63             if (root == null) return null;
64
65             NameValueCollection list = new NameValueCollection();
66             foreach (XmlNode node in root.ChildNodes)
67             {
68                 list.Add(node.Name, node.InnerText);
69             }
70             return list;
71         }

接着使用生成二维码展示出来，使用第三方插件QRCode

 1 　　　　　　　Web.UI.Request request = new UI.Request(true);
 2             string data = request.QueryString("data");
 3             if (string.IsNullOrEmpty(data))
 4             {
 5                 return;
 6             }
 7
 8             try
 9             {
10                 data = Utils.DESDecrypt(data);
11                 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
12                 qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
13                 qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.L;
14                 qrCodeEncoder.QRCodeVersion = 4;
15                 qrCodeEncoder.QRCodeScale = 6;
16
17                 Image image = qrCodeEncoder.Encode(data, Encoding.Default);
18                 System.IO.MemoryStream ms = new System.IO.MemoryStream();
19                 image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
20                 context.Response.ClearContent();
21                 context.Response.ContentType = "image/Jpeg";
22                 context.Response.BinaryWrite(ms.ToArray());
23                 context.Response.End();
24             }
25             catch (Exception ex)
26             {
27
28             }

原文地址：https://www.cnblogs.com/huodetiantang/p/9105760.html