public ActionResult JsApi()
{
String appId = WeixinPayInfo.AppId;
String timeStamp = "";
String nonceStr = "";
String packageValue = "";
String paySign = "";
string sp_billno = Request["order_no"];
//当前时间 yyyyMMdd
string date = DateTime.Now.ToString("yyyyMMdd");
if (null == sp_billno)
{
//生成订单10位序列号，此处用时间和随机数生成，商户根据自己调整，保证唯一
sp_billno = DateTime.Now.ToString("HHmmss") + WeixinPayUtil.BuildRandomStr(4);
}
else
{
sp_billno = Request["order_no"].ToString();
}
sp_billno = WeixinPayInfo.PartnerId + sp_billno;
//创建支付应答对象
RequestHandler packageReqHandler = new RequestHandler(null);
//初始化
packageReqHandler.Init();
//设置package订单参数
packageReqHandler.SetParameter("partner", WeixinPayInfo.PartnerId); //商户号
packageReqHandler.SetParameter("fee_type", "1"); //币种，1人民币
packageReqHandler.SetParameter("input_charset", "GBK");
packageReqHandler.SetParameter("out_trade_no", sp_billno); //商家订单号
packageReqHandler.SetParameter("total_fee", "1"); //商品金额,以分为单位(money * 100).ToString()
packageReqHandler.SetParameter("notify_url", WeixinPayInfo.TenpayNotify); //接收财付通通知的URL
packageReqHandler.SetParameter("body", "JSAPIdemo"); //商品描述
packageReqHandler.SetParameter("spbill_create_ip", Request.UserHostAddress); //用户的公网ip，不是商户服务器IP
//获取package包
packageValue = packageReqHandler.GetRequestURL();
//调起微信支付签名
timeStamp = WeixinPayUtil.GetTimestamp();
nonceStr = WeixinPayUtil.GetNoncestr();
//设置支付参数
RequestHandler paySignReqHandler = new RequestHandler(null);
paySignReqHandler.SetParameter("appid", appId);
paySignReqHandler.SetParameter("appkey", WeixinPayInfo.AppKey);
paySignReqHandler.SetParameter("noncestr", nonceStr);
paySignReqHandler.SetParameter("timestamp", timeStamp);
paySignReqHandler.SetParameter("package", packageValue);
//paySignReqHandler.SetParameter("appid", "wxd930ea5d5a258f4f");
//paySignReqHandler.SetParameter("appkey", "L8LrMqqeGRxST5reouB0K66CaYAWpqhAVsq7ggKkxHCOastWksvuX1uvmvQclxaHoYd3ElNBrNO2DHnnzgfVG9Qs473M3DTOZug5er46FhuGofumV8H2FVR9qkjSlC5K");
//paySignReqHandler.SetParameter("noncestr", "e7d161ac8d8a76529d39d9f5b4249ccb");
//paySignReqHandler.SetParameter("timestamp", "1399514976");
//paySignReqHandler.SetParameter("traceid", "test_1399514976");
//paySignReqHandler.SetParameter("package", "bank_type=WX&body=%E6%94%AF%E4%BB%98%E6%B5%8B%E8%AF%95&fee_type=1&input_charset=UTF-8¬ify_url=http%3A%2F%2Fweixin.qq.com&out_trade_no=7240b65810859cbf2a8d9f76a638c0a3&partner=1900000109&spbill_create_ip=196.168.1.1&total_fee=1&sign=7F77B507B755B3262884291517E380F8");
paySign = paySignReqHandler.CreateSHA1Sign();
//获取debug信息,建议把请求和debug信息写入日志，方便定位问题
//string pakcageDebuginfo = packageReqHandler.getDebugInfo();
//Response.Write("<br/>pakcageDebuginfo:" + pakcageDebuginfo + "<br/>");
//string paySignDebuginfo = paySignReqHandler.getDebugInfo();
//Response.Write("<br/>paySignDebuginfo:" + paySignDebuginfo + "<br/>");
ViewData["appId"] = appId;
ViewData["timeStamp"] = timeStamp;
ViewData["nonceStr"] = nonceStr;
ViewData["packageValue"] = packageValue;
ViewData["paySign"] = paySign;
return View();
}