public void ProcessRequest(System.Web.HttpContext context)
 {
     context.Response.ContentType = "text/plain";
     try
     {
         int    exchangeId  = int.Parse(context.Request["id"].ToString());
         string productIds  = context.Request["products"].ToString();
         string pNumbers    = context.Request["pNumbers"];
         string points      = context.Request["points"];
         string eachNumbers = context.Request["eachNumbers"];
         bool   flag        = PointExChangeHelper.AddProducts(exchangeId, productIds, pNumbers, points, eachNumbers);
         if (flag)
         {
             context.Response.Write("{\"type\":\"success\",\"data\":\"添加商品成功\"}");
         }
         else
         {
             context.Response.Write("{\"type\":\"success\",\"data\":\"写数据库失败\"}");
         }
     }
     catch (System.Exception ex)
     {
         context.Response.Write("{\"type\":\"error\",\"data\":\"" + ex.Message + "\"}");
     }
 }