看我的调用例子：
MakeQRCode.aspx页面照抄：
public partial class Pay_MakeQRCode : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(base.Request.QueryString["data"]))
{
string str = base.Request.QueryString["data"];
Bitmap image = new QRCodeEncoder
{
QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE,
QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M,
QRCodeVersion = 0,
QRCodeScale = 4
}.Encode(str, Encoding.Default);
MemoryStream ms = new MemoryStream();
image.Save(ms, ImageFormat.Png);
base.Response.BinaryWrite(ms.GetBuffer());
base.Response.End();
}
}
}
这个页面是用来生成二维码的，需要引入ThoughtWorks.QRCode.dll组件。
我使用模式二，回调页面是ResultNotifyPage.aspx，就是在配置信息那里填写的那个回调页面。
protected void Page_Load(object sender, EventArgs e)
{
ResultNotify resultNotify = new ResultNotify(this);
WxPayData res = resultNotify.ProcessNotify2();
if (res.GetValue("return_code") == "SUCCESS")
{
//查询微信订单信息
string paySignKey = ConfigurationManager.AppSettings["paySignKey"].ToString();
string mch_id = ConfigurationManager.AppSettings["mch_id"].ToString();
string appId = ConfigurationManager.AppSettings["AppId"].ToString();
QueryOrder queryorder = new QueryOrder();
queryorder.appid = appId;
queryorder.mch_id = mch_id;
queryorder.transaction_id = res.GetValue("transaction_id").ToString();
queryorder.out_trade_no = "";
queryorder.nonce_str = TenpayUtil.getNoncestr();
TenpayUtil tenpay = new TenpayUtil();
OrderDetail orderdeatil = tenpay.getOrderDetail(queryorder, paySignKey);
//写微信记录
(new vinson()).WriteReturnWXDetail(orderdeatil);
//写充值记录
FilliedOnline(orderdeatil.out_trade_no);
}
Response.Write(res.ToXml());
Response.End();
}
扫码支付成功后会异步到这个页面执行代码，我们自己的业务逻辑就要写在这里。使用微信官方的ProcessNotify()函数可不行，我们稍微修改下就好了。增加ProcessNotify2函数：
public WxPayData ProcessNotify2()
{
WxPayData notifyData = GetNotifyData();
//检查支付结果中transaction_id是否存在
if (!notifyData.IsSet("transaction_id"))
{
//若transaction_id不存在，则立即返回结果给微信支付后台
WxPayData res = new WxPayData();
res.SetValue("transaction_id", "");
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "支付结果中微信订单号不存在");
return res;
}
string transaction_id = notifyData.GetValue("transaction_id").ToString();
//查询订单，判断订单真实性
if (!QueryOrder(transaction_id))
{
//若订单查询失败，则立即返回结果给微信支付后台
WxPayData res = new WxPayData();
res.SetValue("transaction_id", transaction_id);
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", "订单查询失败");
return res;
}
//查询订单成功
else
{
WxPayData res = new WxPayData();
res.SetValue("transaction_id", transaction_id);
res.SetValue("return_code", "SUCCESS");
res.SetValue("return_msg", "OK");
return res;
}
}
