java - GAE session 离线或在线的行为不同

Question

我有这个代码:

private String delete(HttpServletRequest req, HttpServletResponse res, Seller seller) throws Exception {

    //check data
    if(req.getParameter("equipmentId") == null) {

    throw new Exception("equipmentId undefined");

}

//build
Equipment equipment = new Equipment(Integer.parseInt(req.getParameter("equipmentId")));

//delete
dbEquipment.delete(equipment);

//remove in array list
for(int i = 0; i < seller.getListEquipment().size(); i++) {

    if(seller.getListEquipment().get(i).getId() == equipment.getId()) {

        seller.getListEquipment().remove(i);

    }

}

//response
return "ok";

}

传递的卖家属性来自 HTTPSession :((Seller) req.getSession().getAttribute("user"))

此代码离线更新我的对象 Seller 正常，但在线更新不会显示，它仍然是旧对象/ArrayList。

Answer 1

更新对象的内容后，尝试将对象保存回 session 中。