Jsp 如何使用setAttribute（）从设置为bean的数组列表中获取值？
这是使用setAttribute设置数组列表的代码Jsp 如何使用setAttribute（）从设置为bean的数组列表中获取值？,jsp,servlets,struts-1,Jsp,Servlets,Struts 1,这是使用setAttribute设置数组列表的代码 @Override public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { PrintWriter out; out = response.getW
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception {
PrintWriter out;
out = response.getWriter();
dbc.openConnection();
travelDetails = new java.util.ArrayList();
HttpSession session = request.getSession(true);
if ("OK".equals(session.getAttribute("login"))) {
String sValue = String.valueOf(session.getAttribute("status"));
String employeeId = String.valueOf(session.getAttribute("employeeId"));
TravelSettlement ts = (TravelSettlement) form;
TravelBean tBean;
String travelId = "";
travelId = ts.getCheckedValue()[0];
session.setAttribute("travelSId", travelId);
dateDetails = new java.util.ArrayList();
travelId1 = new java.util.ArrayList();
String query1 = "select td.travel_id,td.date,td.mode,td.travel_from,td.travel_to,td.purpose from travel_details td,travel_master tm where td.travel_id=tm.travel_id and td.travel_id='" + travelId + "'";
ResultSet rs1 = dbc.processSelect(query1);
while (rs1.next()) {
String date = "";
String mode = "";
String travel_from = "";
String travel_to = "";
String purpose = "";
tBean = new TravelBean();
TravelBean tb1 = new TravelBean();
long travel_Id = Long.valueOf(rs1.getString(1));
tBean.setTravelId(travel_Id);
Bean.setDate(DateUtil.stringToSQLDateFormat(rs1.getString(2), "yyyy-MM-dd", "dd-MM-yyyy"));
tBean.setMode(rs1.getString(3));
tBean.setTravelFrom(rs1.getString(4));
tBean.setTravelTo(rs1.getString(5));
tBean.setPurpose(rs1.getString(6));
travelDetails.add(tBean);
dateDetails.add(tBean);
travelId1.add(travelId);
}
request.setAttribute("travelId", travelId1);
request.setAttribute("dateDetails", dateDetails);
session.setAttribute("travelDetails", travelDetails);
return mapping.findForward("edit_request");
} else {
return mapping.findForward("error");
}
}
<html>
<body>
<table width="100%" cellpadding="0" cellspacing="0" align="center" border="0" id="myTable">
<script>
var i = 0;
var name="#tbodyId"+i;
</script>
<logic:iterate id="dateDetails" name="dateDetails">
<tbody>
<tr>
<logic:lessThan property="date" name="dateDetails" value="2">
<td width="14%" >
<html:text property="date" name="dateDetails" size="12" readonly="false" styleClass="hometext" />
<img src="./images/cal.gif" alt="calender" onclick="displayCalendar(document.forms[0].date[0], 'dd-mm-yyyy', this)"/>
</td>
</logic:lessThan>
<logic:greaterEqual property="date" name="dateDetails" value="1">
<td width="12%" >
<html:text property="date" name="dateDetails" size="12" readonly="false" styleClass="hometext" />
<img src="./images/cal.gif" alt="calender" onclick="displayCalendar(document.forms[0].date[i++], 'dd-mm-yyyy', this)"/>
</td>
</logic:greaterEqual>
<td width="12%" class="tbldata" >
<html:select property="mode" styleClass="hometext" name="dateDetails">
<html:options name="modeOption" labelName="modeValue"/>
</html:select>
</td>
<td width="15%" class="tbldata" align="center"><html:text property="travelFrom" name="dateDetails"/></td>
<td width="13%" class="tbldata" align="center"><html:text property="travelTo" name="dateDetails"/></td>
<td class="tbldata">
<html:textarea property="purpose" name="dateDetails" rows="2" cols="20" styleClass="textarea" onchange="ajaxDateCheckValue()"/>
</td>
<td width="15%" class="tbldata" align="center">
<button type="button" onclick="setHidden()">Update</button>
</td>
</tr>
</tbody>
</logic:iterate>
</table>
</body>
</html>
var i=0；
var name=“#tbodyId”+i；
更新
我想使用该数组将用户编辑的详细信息更新到数据库中，数组名为（dateDetails）。在JSP中使用我们谈论的是什么Arraylist？在当前场景中，如何处理用户更新的属性？@ShivamAggarwal dateDetails是一个Arraylist，我将bean属性设置到while循环中，并将bean对象添加到ArrayList（dateDetails），您可以在代码的第一部分看到，请帮助我，谢谢……是的，它正在迭代ArrayList，并且正在获取ArrayList中的所有元素，但是我需要用相同的ArrayList将用户的编辑细节更新到数据库中，因为ArrayList中的元素是动态的，ArrayList（即dateDetails）不在bean类中，否则我可以使用getter方法来获取元素。