private void getjssignature(HttpContext context)
{
string appId = PaymentConfig.WeiXinConfig.AppID;
long timestamp = (long)((DateTime.Now - new DateTime(1970, 1, 1)).TotalSeconds);
string nonceStr = "yongyou2016";
string url = context.Request.Params["pageurl"];
if (!url.StartsWith("http"))
{
url = WebUtil.GetContextPath() + url;
}
string signature = WeixinHelper.GetJsApiSignature(nonceStr, timestamp, url);
WebUtil.WriteJsonResult(context, new { url = url, appId = appId, timestamp = timestamp, nonceStr = nonceStr, signature = signature });
}