//检查支付宝通知接口传递过来的参数是否合法
msg_id = newop.DelStr（Request["msg_id"]）;
order_no = newop.DelStr（Request["order_no"]）;
gross = newop.DelStr（Request["gross"]）;
buyer_email = newop.DelStr（Request["buyer_email"]）;
buyer_name = newop.DelStr（Request["buyer_name"]）;
buyer_address = newop.DelStr（Request["buyer_address"]）;
buyer_zipcode = newop.DelStr（Request["buyer_zipcode"]）;
buyer_tel = newop.DelStr（Request["buyer_tel"]）;
buyer_mobile = newop.DelStr（Request["buyer_mobile"]）;
action = newop.DelStr（Request["action"]）;
s_date = newop.DelStr（Request["date"]）;
ac = newop.DelStr（Request["ac"]）;
notify_type = newop.DelStr（Request["notify_type"]）;
alipayNotifyURL = alipayNotifyURL + "msg_id=" + msg_id + "&email=" + myalipayEmail + "&order_no=" + order_no;
System.Net.WebClient isClient= new System.Net.WebClient（）;
Stream isStream = isClient.OpenRead（alipayNotifyURL）;
StreamReader isReader = new StreamReader（isStream，System.Text.Encoding.GetEncoding（"GB2312"））;
ResponseTxt = isReader.ReadToEnd（）;
if（action == "test"）//测试商户网站URL是否正确安装
{
returnTxt = "Y";
}
else if（（action=="sendOff"）&&（msg_id！=""））//发货通知
{
returnTxt = "N";
if（（ResponseTxt == "true"）||（ResponseTxt == "false"））
{
//更新数据在商户系统里的订单数据;如果已经发货，则将returnTxt置为Y，否则为N
}
else
{
//非法数据，不做更新
returnTxt="Error";
}
}
else if（（action=="sendOff"）&&（notify_type=="web"））
{
//检查是否已经付帐，并记录 }
else if（（action=="checkOut"）&&（msg_id！=""））//交易结束通知
{
returnTxt = "Y";
if（（ResponseTxt=="true"）||（ResponseTxt == "false"））
{
//更新数据在商户系统里的订单数据;如果数据更新成功，则将returnTxt置为Y，否则为N
//更新数据
//你的代码，更新你这边数据
returnTxt= "Y";
}
else
{
//非法数据，不做更新
returnTxt = "Error";
}
}
else
{
returnTxt="Error";
}
Response.Write（returnTxt）;
