/// <summary>
/// 获取购物车商品总价
/// </summary>
/// <param name="context"></param>
private void GetShoppingCartTotal(System.Web.HttpContext context)
{
context.Response.ContentType = "application/json";
context.Response.Write("{\"success\":true,\"totalprice\":\"" + ShoppingCartProcessor.GetShoppingCartTotal() + "\"}");
}