主要实现微信扫码支付，官网的SDKdemo 就不要使用 一直不能调试通过的，还是自己按照API接口文档一步一步来实现，吐槽下微信一点责任感都木有，能不能demo搞个正常的吗，不要坑惨了一大群码农们有点社会责任感吧 还是多学学你的Alibaba 直接上干货
具体文档接口都直接参考文档说明干
具体代码一步一步呈上
Index.aspx 显示二维码页面：
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<meta http-equiv="content-type" content="text/html;image/gif;charset=utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>微信支付样例-扫码支付</title>
</head>
<body> <div style="margin-left: 10px;color:#00CD00;font-size:30px;font-weight: bolder;">扫码支付模式二</div><br/>
<asp:Image ID="Image2" runat="server" style="width:200px;height:200px;"/> </body>
</html>
protected void Page_Load(object sender, EventArgs e)
{
//支付金额
string PayPrice = Request.GetString("payprice").ToString("filtersql");
//支付单号
string Payorder = Request.GetString("payorder").ToString("filtersql");
//公众号jsapi支付 H5支付传参数
string Openid = Request.GetString("openid").ToString("filtersql");
//扫码支付 模式二
string productId = Request.GetString("productId").ToString("filtersql"); WechatPayHelper wxpay = new WechatPayHelper(); int total_fee = (Convert.ToInt32(decimal.Parse("0.01") * ));
//扫码支付模式二 Native Pay trade_type=NATIVE时（即扫码支付），此参数必传。此参数为二维码中包含的商品ID，商户自行定义
主要参数依次是 订单号 金额 openid 公众号 产品productid
string return_response = wxpay.GetUnifiedOrderResultNative("", total_fee, "财政专费", "oC88888JeOjjkgvlWf6p999Jgu4", "");
//将url生成二维码图片 Image2.ImageUrl = "http://localhost:1200/NotivePayAPI/MakeQRCode.aspx?data=" + HttpUtility.UrlEncode(return_response);
public class WechatPayHelper
{
private string RequestUrl = "";
private string key = "";
private string appid = "";//应用ID
private string mch_id = "";//商户号
private string nonce_str = "";//随机字符串
private string sign = "";//签名
// private string body = "";//商品描述
// private string out_trade_no = "";//商户订单号
private string spbill_create_ip = "";//终端IP
private string notify_url = "";//通知地址
private string trade_type = "";//交易类型
private string pay_url = "";
//字符编码格式 目前支持 utf-8
private string input_charset = "utf-8";
//签名方式
private string sign_type = "MD5";
public WechatPayHelper()
{
HttpContext Context = System.Web.HttpContext.Current;
DataTable dt = null; //native 扫码支付配置 读取配置文件XML
string strXML = "Wechat_Pay_Native.xml";
//////////////////////////////////////////////////
object objValue = Common.DataCache.GetCache(strXML);
if (objValue == null)
{
dt = GetConfigXml("//Config//PayConfig/" + strXML);
Common.DataCache.SetCache(strXML, dt);
}
else
{
dt = (DataTable)objValue;
}
if (dt != null)
{
appid = dt.Rows[]["appid"].ToString();
mch_id = dt.Rows[]["mch_id"].ToString();
notify_url = dt.Rows[]["notify_url"].ToString();
pay_url = dt.Rows[]["pay_url"].ToString();
spbill_create_ip = GetUserIp();
nonce_str=StrRodamNo();
trade_type = dt.Rows[]["trade_type"].ToString();
key = dt.Rows[]["key"].ToString();
}
}
/// <summary>
/// 生成直接支付url 调用统一下单，获得下单结果 扫码支付模式二 支付url有效期为2小时,
/// </summary>
/// <param name="out_trade_no"></param>
/// <param name="total_fee"></param>
/// <param name="body"></param>
/// <returns></returns>
public string GetUnifiedOrderResultNative(string out_trade_no, int total_fee, string body, string openid, string productId)
{
//请求业务参数详细
StringBuilder sb = new StringBuilder();
sb.AppendFormat("<xml><appid>{0}</appid><mch_id>{1}</mch_id> <body>{2}</body><nonce_str>{3}</nonce_str>", appid, mch_id, body, nonce_str);
sb.AppendFormat("<out_trade_no>{0}</out_trade_no><total_fee>{1}</total_fee> <spbill_create_ip>{2}</spbill_create_ip><trade_type>{3}</trade_type>", out_trade_no, total_fee.ToString(), spbill_create_ip, trade_type);
sb.AppendFormat("<notify_url>{0}</notify_url>", notify_url);
sb.AppendFormat("<openid>{0}</openid>", openid);
sb.AppendFormat("<product_id>{0}</product_id>", productId); //把请求参数打包成数组
Dictionary<string, string> softdic = new Dictionary<string, string>();
softdic.Add("appid", appid);
softdic.Add("mch_id", mch_id);
softdic.Add("nonce_str", nonce_str);
softdic.Add("body", body);
softdic.Add("out_trade_no", out_trade_no);
softdic.Add("total_fee", total_fee.ToString());
softdic.Add("spbill_create_ip", spbill_create_ip);
softdic.Add("trade_type", trade_type);
softdic.Add("notify_url", notify_url);
softdic.Add("openid", openid);
softdic.Add("product_id", productId);
//请求参数体
string strRequest = ""; //加密签名
string strSign = MakeSignData(softdic, ref strRequest); strRequest += "&sign=" + strSign; //打包xml
sb.AppendFormat("<sign>{0}</sign></xml>", strSign); //发送请求
string strResponse = RequestWechatpay(sb.ToString()); //URLDECODE返回的信息
Encoding code = Encoding.GetEncoding(input_charset);
strResponse = HttpUtility.UrlDecode(strResponse, code);
string ResponseURL = ReadXmlNode(strResponse);//获得统一下单接口返回的二维码链接code_url return ResponseURL;
} /// <summary>
/// 签名原始串
/// </summary>
/// <param name="dicParm">所有非空参数</param>
/// <param name="strQueryString">请求串</param>
/// <returns>签名串</returns>
public string MakeSignData(Dictionary<string, string> dicParm, ref string strQueryString)
{ //先排序
Dictionary<string, string> dicSort = dicParm.OrderBy(o => o.Key).ToDictionary(o => o.Key, p => p.Value);
StringBuilder sb = new StringBuilder();
//再转换成URL字符串
foreach (KeyValuePair<string, string> kvParm in dicSort)
{
if (null != kvParm.Value && "".CompareTo(kvParm.Value) !=
&& "sign".CompareTo(kvParm.Key) != && "key".CompareTo(kvParm.Key) != && "sign_type".CompareTo(kvParm.Key) != )
{
if (sb.Length > )
{
sb.Append("&");
strQueryString += "&";
}
sb.Append(kvParm.Key + "=" + HttpUtility.UrlDecode(kvParm.Value));
strQueryString += kvParm.Key + "=" + HttpUtility.UrlEncode(kvParm.Value);
}
}
//再和key拼装成字符串
sb.Append("&key=" + key);
//再进行MD5加密转成大写
return MD5Create(sb.ToString(), input_charset).ToUpper(); } public static string MD5Create(string str, string charset)
{
string retStr;
MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider(); //创建md5对象
byte[] inputBye;
byte[] outputBye; //使用GB2312编码方式把字符串转化为字节数组．
try
{
inputBye = Encoding.GetEncoding(charset).GetBytes(str);
}
catch (Exception ex)
{
inputBye = Encoding.GetEncoding("GB2312").GetBytes(str);
}
outputBye = m5.ComputeHash(inputBye); retStr = System.BitConverter.ToString(outputBye);
retStr = retStr.Replace("-", "");
return retStr;
} /// <summary>
///把请求参数信息打包发送请求微信支付地址
/// </summary>
/// <param name="strRequestData">请求参数字符串（QueryString）</param>
/// <returns></returns>
private string RequestWechatpay(string strRequestData)
{
Encoding code = Encoding.GetEncoding(input_charset); //把数组转换成流中所需字节数组类型
byte[] bytesRequestData = code.GetBytes(strRequestData); //请求远程HTTP
string strResult = "";
try
{
//设置HttpWebRequest基本信息
HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(pay_url);
myReq.Method = "post";
myReq.ContentType = "text/xml"; //填充POST数据
myReq.ContentLength = bytesRequestData.Length;
Stream requestStream = myReq.GetRequestStream();
requestStream.Write(bytesRequestData, , bytesRequestData.Length);
requestStream.Close(); //发送POST数据请求服务器
HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
Stream myStream = HttpWResp.GetResponseStream(); //获取服务器返回信息
StreamReader reader = new StreamReader(myStream, code);
StringBuilder responseData = new StringBuilder();
String line;
while ((line = reader.ReadLine()) != null)
{
responseData.Append(line);
} //释放
myStream.Close(); strResult = responseData.ToString();
}
catch (Exception exp)
{
strResult = "报错：" + exp.Message;
} return strResult;
} /// <summary>
/// 获得客户端的IP
/// </summary>
/// <returns>当前页面客户端的IP</returns>
public static string GetUserIp()
{ string userHostAddress = HttpContext.Current.Request.UserHostAddress; if (string.IsNullOrEmpty(userHostAddress))
{
userHostAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
} //最后判断获取是否成功，并检查IP地址的格式（检查其格式非常重要）
if (!string.IsNullOrEmpty(userHostAddress) && IsIP(userHostAddress))
{
return userHostAddress;
}
return "127.0.0.1"; } /// <summary>
/// 检查IP地址格式
/// </summary>
/// <param name="ip"></param>
/// <returns></returns>
public static bool IsIP(string ip)
{
return System.Text.RegularExpressions.Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
} /// <summary>
/// 生成随机字母与数字
/// </summary>
/// <param name="IntStr">生成长度</param>
/// <returns></returns>
public static string StrRodamNo(int Length)
{
return StrRodam(Length, false);
} /// <summary>
/// 生成随机字母与数字
/// </summary>
/// <param name="Length">生成长度</param>
/// <param name="Sleep">是否要在生成前将当前线程阻止以避免重复</param>
/// <returns></returns>
public static string StrRodam(int Length, bool Sleep)
{
if (Sleep)
System.Threading.Thread.Sleep();
char[] Pattern = new char[] { '', '', '', '', '', '', '', '', '', '', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
string result = "";
int n = Pattern.Length;
System.Random random = new Random(~unchecked((int)DateTime.Now.Ticks));
for (int i = ; i < Length; i++)
{
int rnd = random.Next(, n);
result += Pattern[rnd];
}
return result;
} #region 读取xml中的指定节点的值
/// <summary>
/// 读取xml中的指定节点的值
/// </summary>
private string ReadXmlNode(string filename)
{
string result = "调用微信服务异常";
XmlDocument xmlDoc = new XmlDocument();
try
{
xmlDoc.LoadXml(filename); XmlNode root = xmlDoc.SelectSingleNode("xml");
if (root != null)
result = (root.SelectSingleNode("code_url")).InnerText; }
catch (Exception e)
{
Common.Utils.WriteLogFile("ReadXmlNode：" + e.Message,"");
}
return result;
} #endregion
}
MakeQRCode.aspx.cs 主要生成二维码 要引用 ThoughtWorks.QRCode.dll
protected void Page_Load(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(Request.QueryString["data"]))
{
string str = Request.QueryString["data"]; //初始化二维码生成工具
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
qrCodeEncoder.QRCodeVersion = ;
qrCodeEncoder.QRCodeScale = ; //将字符串生成二维码图片
Bitmap image = qrCodeEncoder.Encode(str, Encoding.Default); //保存为PNG到内存流
MemoryStream ms = new MemoryStream();
image.Save(ms, ImageFormat.Png); //输出二维码图片
Response.BinaryWrite(ms.GetBuffer());
Response.End();
}
}
微信扫码支付异步通知结果处理
WXNativeNotifyPage.aspx.cs
/// <summary>
/// 微信扫码支付异步通知结果处理 主要负责接收微信支付后台发送过来的数据，对数据进行签名验证
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Page_Load(object sender, EventArgs e)
{
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
//微信的API写法
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
//接收从微信后台POST过来的数据
//System.IO.Stream s = Page.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();
//SZRPP.Common.Utils.WriteLogFile("接收post来的数据", "Receive data from WeChat : " + builder.ToString());
//Dictionary<string, string> dicParam = GetInfoFromXml(builder.ToString());
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
//接收从微信后台POST过来的数据
StreamReader reader = new StreamReader(Request.InputStream);
String xmlData = reader.ReadToEnd();
Utils.WriteLog("接收post来的微信异步回调：" + xmlData, "微信异步回调");
//序列化xml //转换数据格式并验证签名
Dictionary<string, string> dicParam = GetInfoFromXml(xmlData);
string data = ""; try
{
//当收到通知进行处理时，首先检查对应业务数据的状态，判断该通知是否已经处理过，如果没有处理过再进行处理，如果处理过直接返回结果成功。在对业务数据进行状态检查和处理之前，要采用数据锁进行并发控制，以避免函数重入造成的数据混乱。
if (dicParam.ContainsKey("return_code") && dicParam["return_code"] == "SUCCESS")
{ WechatPayHelper wcHelper = new WechatPayHelper();
string strRequestData = "";
//对返回的参数信息进行签名
string strSign = wcHelper.MakeSignData(dicParam, ref strRequestData);
//判断返回签名是否正确
if (strSign == dicParam["sign"])
{
//判断业务结果
if ("SUCCESS" == dicParam["result_code"])
{
//////检查openid和product_id是否返回
if (string.IsNullOrEmpty(dicParam["openid"]) || string.IsNullOrEmpty(dicParam["product_id"]))
{
data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[产品ID不存在回调数据异常]]></return_msg></xml>";
Response.Write(data);
} //判断业务是否处理过 应该有通知日志表 先暂通过缴费表做判断
string out_trade_no = dicParam["out_trade_no"];//订单编号 if (out_trade_no != null)
{ //自己的订单逻辑处理了 比较金额是否一致
OrderPay pay = payBll.Query(out_trade_no,""); if (pay!= null)
{
//商户系统对于支付结果通知的内容一定要做签名验证,并校验返回的订单金额是否与商户侧的订单金额一致，防止数据泄漏导致出现“假通知”，造成资金损失。
if (pay.PayPrice.Equals(decimal.Parse(dicParam["total_fee"])/))
{
data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[金额不一致回调数据异常]]></return_msg></xml>";
Response.Write(data);
}
if (pay.PayStatus == )
{
//已经支付 视为处理过 直接返回
data = "<xml><return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg></xml>";
Response.Write(data);
}
else
{ //收到确认后，更新订单的状态
//修改支付状态
if (payBll.UpdatePayStatus(out_trade_no, "",) > )
{
data = "<xml><return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg></xml>";
Response.Write(data);
}
}
}
else
{
data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
Response.Write(data);
}
}
}
else
{
//错误信息
string error = dicParam["err_code"] + ":" + dicParam["err_code_des"];
data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
Response.Write(data);
}
}
else
{
data="<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统超时]]></return_msg></xml>";
Response.Write(data);
}
} }
catch (Exception ex)
{
Utils.WriteLog("微信异步回调异常：" + ex.Message, "异常日志");
data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系统调用超时]]></return_msg></xml>";
Response.Write(data);
}
}
/// <summary>
/// 把XML数据转换为Sorted<string, string>集合
/// </summary>
/// <param name="strxml"></param>
/// <returns></returns>
public Dictionary<string, string> GetInfoFromXml(string xmlstring)
{
Dictionary<string, string> sParams = new Dictionary<string, string>();
try
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xmlstring);
XmlElement root = doc.DocumentElement;
int len = root.ChildNodes.Count;
for (int i = ; i < len; i++)
{
string name = root.ChildNodes[i].Name;
if (!sParams.ContainsKey(name))
{
sParams.Add(name.Trim(), root.ChildNodes[i].InnerText.Trim());
}
}
}
catch (Exception ex)
{ }
return sParams;
}
微信商户信息配置xml文件
Wechat_Pay_Native.xml
<?xml version="1.0" encoding="utf-8" ?>
<data>
<!--接收微信支付异步通知回调地址，通知url必须为直接可访问的url，不能携带参数-->
<notify_url>http://8.20.7.8:300/PayNotifyPage/PayNotify/WXNativeNotifyPage.aspx</notify_url>
<pay_url>https://api.mch.weixin.qq.com/pay/unifiedorder</pay_url>
<!--微信开放平台审核通过的应用APPID-->
<appid>wxf88888888888</appid>
<!--微信支付分配的商户号-->
<mch_id>14666666662</mch_id>
<key>16gfhhg5655jjh55ff8ff88gd</key>
<subject>财政专费</subject>
<trade_type>NATIVE</trade_type>
</data>
至此就可以完成扫码支付了
有图有真相
生成二维码显示
微信扫一扫 结果
