老师，为什么无法修改留言信息，方法有错吗，求解，程序没有报错

/**
* 修改留言信息
* @param message
* @return
*/
public boolean updateMessages(Message message) {
   Connection conn = ConnectionUtil.getConnection();
   String sql = "UPDATE message SET user_id = ?, username = ?, title = ?, content = ?, create_time = ? WHERE id = ?";
   PreparedStatement stmt = null;
   try {
       stmt = conn.prepareStatement(sql);
       stmt.setLong(1,message.getUserId());
       stmt.setString(2,message.getUsername());
       stmt.setString(3, message.getTitle());
       stmt.setString(4, message.getContent());
       stmt.setTimestamp(5, new Timestamp(message.getCreateTime().getTime()));
       stmt.setLong(6,message.getId());
       stmt.execute();
   } catch (SQLException e) {
       System.out.println("查询用户信息失败。");
       e.printStackTrace();
       return false;
   } finally {
       ConnectionUtil.release(null, stmt, conn);
   }
   return true;
}

public class MyMessageServlet extends HttpServlet {
    private MessageService messageService;

    @Override
    public void init() throws ServletException {
        super.init();
        messageService = new MessageService();
    }

    @Override
    public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String pathName = request.getServletPath();
        Message message = (Message) request.getSession().getAttribute("messages");
        if (Objects.equals("/editMessagePrompt.do", pathName)) {
            Long id = Long.valueOf(request.getParameter("id"));
            request.getSession().setAttribute("id",id);
            Message messages = messageService.getMessagesById(id);
            request.getSession().setAttribute("messages", messages);
            request.getRequestDispatcher("/WEB-INF/views/biz/updat_message.jsp").forward(request, response);
        } else if (Objects.equals("/editMessage.do", pathName)) {
            long id = (long) request.getSession().getAttribute("id");
            long u_id = (long) request.getSession().getAttribute("u_id");
            String username = message.getUsername();
            Date createTime = message.getCreateTime();
            String inputTitle = request.getParameter("title");
            String inputContent = request.getParameter("content");
            Message messsage = new Message(id,u_id,username,inputTitle,inputContent,createTime);
            boolean result = messageService.updateMessages(messsage);
            if(result){
                String pageStr = (String) request.getSession().getAttribute("pageStr");//当前页码
                Long sid = Long.valueOf(u_id);//从Session获得当前用户ID
                System.out.print(pageStr);
                int page = 1;//页码默认值为1
                if (null != pageStr && (!"".equals(pageStr))) {
                    try {
                        page = Integer.parseInt(pageStr);
                    } catch (NumberFormatException e) {
                        e.printStackTrace();
                    }
                }

                List<Message> messages = messageService.mygetMessages(page, 5 ,sid);//分页查询当前用户留言
                int count = messageService.mycountMessages(sid);//查询当前用户留言数量
                int last = count % 5 == 0 ? (count / 5) : ((count / 5) + 1);
                request.setAttribute("last", last);
                request.setAttribute("messages", messages);
                request.setAttribute("page", page);
                request.getRequestDispatcher("/WEB-INF/views/biz/my_message_list.jsp").forward(request, response);
            }else {
                request.getRequestDispatcher("/WEB-INF/views/error/404.jsp").forward(request, response);
            }
        } else {
            request.getRequestDispatcher("/WEB-INF/views/error/404.jsp").forward(request, response);
        }
    }
}