----------------------------------JSP<TR><TH width="100" height="25" class=gridViewHeader scope=col>溏號</TH><TH width="100" height="25" class=gridViewHeader scope=col>水溫</TH><TH width="100" height="25" class=gridViewHeader scope=col>酸堿度</TH><TH width="100" height="25" class=gridViewHeader scope=col>含氧量</TH><TH width="100" height="25" class=gridViewHeader scope=col>檢查時間</TH></TR><%List list = (List)session.getAttribute("list");for(int i=0; i<list.size();i++){pool po = (pool)list.get(i);%><TR><TD width="100" height="25" class=gridViewItem ><%= po.getPID()%></TD><TD width="100" height="25" class=gridViewItem ><%= po.getWATERTEMP()%></TD><TD width="100" height="25" class=gridViewItem ><%= po.getPH()%></TD><TD width="100" height="25" class=gridViewItem ><%= po.getOXYGEN()%></TD><TD width="100" height="25" class=gridViewItem ><%= po.getCHECKTIME()%></TD>----------servlet中已經往session中存了值HttpSession session = request.getSession();session.setAttribute("list", l);-----------錯誤提示org.apache.jasper.JasperException: An exception occurred processing JSP page /web/waterinfo.jsp at line 8279:80: <%81: List list = (List)session.getAttribute("list");82: for(int i=0; i<list.size();i++){83: pool po = (pool)list.get(i);84: %>85: <TR>
求助：為什么 JSP 中 for 循環 不好用?。吭撜k？
嚕嚕噠
2022-06-02 11:07:45
