public static string GetPrepayId(UnifiedOrder order, string key)
{
string prepay_id = "";
string post_data = GetUnifiedOrderXml(order, key);
string request_data = PostXmlToUrl(UnifiedPayUrl, post_data);
SortedDictionary<string, string> requestXml = GetInfoFromXml(request_data);
foreach(KeyValuePair<string, string> k in requestXml)
{
if(k.Key == "prepay_id")
{
prepay_id = k.Value;
break;
}
}
return prepay_id;
}
private static string GetUnifiedOrderXml(UnifiedOrder order, string key)
{
string return_string = string.Empty;
SortedDictionary<string, string> sParams = new SortedDictionary<string, string>();
sParams.Add("appid", order.appid);
sParams.Add("attach", order.attach);
sParams.Add("body", order.body);
sParams.Add("device_info", order.device_info);
sParams.Add("mch_id", order.mch_id);
sParams.Add("nonce_str", order.nonce_str);
sParams.Add("notify_url", order.notify_url);
sParams.Add("openid", order.openid);
sParams.Add("out_trade_no", order.out_trade_no);
sParams.Add("spbill_create_ip", order.spbill_create_ip);
sParams.Add("total_fee", order.total_fee.ToString());
sParams.Add("trade_type", order.trade_type);
order.sign = GetSign(sParams, key);
sParams.Add("sign", order.sign);
StringBuilder sbPay = new StringBuilder();
foreach (KeyValuePair<string, string> k in sParams)
{
if (k.Key == "attach" || k.Key == "body" || k.Key == "sign")
{
sbPay.Append("<" + k.Key + "><![CDATA[" + k.Value + "]]></" + k.Key + ">");
}
else
{
sbPay.Append("<" + k.Key + ">" + k.Value + "</" + k.Key + ">");
}
}
return_string = string.Format("<xml>{0}</xml>", sbPay.ToString());
byte[] byteArray = Encoding.UTF8.GetBytes(return_string);
return_string = Encoding.GetEncoding("GBK").GetString(byteArray);
return return_string;
}
private string GetPrePayId(string ip)
{
UnifiedOrder order = new UnifiedOrder();
order.appid = "xxx";
order.attach = "version";
order.body = 10 + "人民币";
order.device_info = "";
order.mch_id = "mch_id";
order.nonce_str = WeixinPayUtil.GetNoncestr();
order.notify_url = "http://localhost/sample/a.aspx";
order.openid = "openid";
order.out_trade_no = "order_id";
order.trade_type = "JSAPI";
order.spbill_create_ip = ip;
order.total_fee = 10 * 100;
return WeixinPayUtil.GetPrepayId(order, "paySignKey");
}
