private static void fillDetail(DBCon dbCon, Staff staff, WxOrder wxOrder)
     throws SQLException, BusinessException {
   String sql;
   sql =
       " SELECT * FROM "
           + Params.dbName
           + ".weixin_order_food WHERE wx_order_id = "
           + wxOrder.getId();
   dbCon.rs = dbCon.stmt.executeQuery(sql);
   while (dbCon.rs.next()) {
     OrderFood of = new OrderFood();
     of.asFood().copyFrom(FoodDao.getById(staff, dbCon.rs.getInt("food_id")));
     of.setCount(dbCon.rs.getFloat("food_count"));
     wxOrder.addFood(of);
   }
   dbCon.rs.close();
   wxOrder.setMember(MemberDao.getByWxSerial(dbCon, staff, wxOrder.getWeixinSerial()));
 }