无法保存session

Question

用Tomcat5.5启动项目操作session时保存值，然后读取却没有值，但是服务器上一切正常这是什么原因啊

Answer 1

如果你没有修改session的时间,应该不会保存不了,
我觉得应该是你没有保存正确或没有取出正确.

Answer 2

session.setAttribute("UserName","超级用户");
楼主确定set没错？

Answer 3

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【yjqtd2008】截止到2008-07-29 16:57:40的历史汇总数据(不包括此帖)：
发帖的总数量:1                        发帖的总分数:20                       每贴平均分数:20                       
回帖的总数量:1                        得分贴总数量:0                        回帖的得分率:0%                       
结贴的总数量:1                        结贴的总分数:20                       
无满意结贴数:0                        无满意结贴分:0                        
未结的帖子数:0                        未结的总分数:0                        
结贴的百分比:100.00%               结分的百分比:100.00%                  
无满意结贴率:0.00  %               无满意结分率:0.00  %                  
敬礼!
http://www.java2000.net/mycsdn/robotStop.jsp

Answer 4

request.getSession().setAttribute("reportDate", data);    保存Session
然后在 request.getSession().getAttribute("reportDate");  读取在服务器上是正常的，但是在我自己的机器上get出来是NULL 

Answer 5

public ActionForward showAdd(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
LoginSessionServiceImp logSess = new LoginSessionServiceImp(request); Map map = systemConfig.getMapBySessionFactoryId(logSess
.getCompanyCode(), request);
List providerLevel = (List) map.get("reportProviderLevel");
if ((providerLevel != null) && (!providerLevel.isEmpty())) {
dailyreportService
.setProviderLevel(providerLevel.get(0).toString());
} map = systemConfig.getMapBySessionFactoryId(logSess.getCompanyCode(),
request);
List specialShortID = (List) map.get("specialProvider");
if ((specialShortID != null) && (!specialShortID.isEmpty())) {
dailyreportService.setSpecialShortID(specialShortID.get(0)
.toString());
} String time = request.getParameter("time");
if ("".equals(time)) {
// SimpleDateFormat formater = new SimpleDateFormat("yyyy-MM-dd");
time = DateUtils.getDateString(new Date(), "yyyy-MM-dd");
}
request.getSession().setAttribute("selectTime", time); List dailyList = dailyreportService.getList(logSess.getCompanyCode(),
java.sql.Date.valueOf(DateUtils.getLastDay(time)));
List doubleList = dailyreportService.getList(logSess.getCompanyCode(),
java.sql.Date.valueOf(time));
boolean testhasDate = dailyreportService.isBeforeTimeHasDate(time,
logSess.getCompanyCode());
if (dailyList.isEmpty() && testhasDate && doubleList.isEmpty()) {
ActionMessages messages = new ActionMessages();
messages.add(ActionMessages.GLOBAL_MESSAGE,
new ActionMessage("messages.delete", DateUtils
.getLastDay(time)
+ " 还没有生成日报！"));
this.saveMessages(request, messages);
return mapping.findForward("nodata");
}
DailyReportData data = dailyreportService.getReportData(logSess
.getCompanyCode(), time);
map = systemConfig.getMapBySessionFactoryId(logSess.getCompanyCode(),
request);
List typeList = (List) map.get("transmitmodel");
if ((typeList == null) || (typeList.isEmpty())) {
ActionMessages messages = new ActionMessages();
messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
"messages.delete", "你还没有配置系统参数！"));
this.saveMessages(request, messages);
return mapping.findForward("nodata");
}
String type = typeList.get(0).toString(); DailyMasterReport listReport = data.getDailyMasterItem();
DailyMasterReport report = new DailyMasterReport();
if (listReport == null)
listReport = new DailyMasterReport();
try {
BeanUtils.copyProperties(report, listReport);
} catch (Exception e) {
report = listReport;
e.printStackTrace();
}
if (time.endsWith("-01")) {
report.setMccaccount(0);
report.setMcoaccount(0);
report.setMeoaccount(0);
report.setMeccoalaccount(0);
report.setMonthcoalremain(report.getCoalremainaccount());
report.setMonthoilremain(report.getOilremainaccount());
}
if (time.endsWith("-01-01")) {
report.setYccaccount(0);
report.setYcoaccount(0);
report.setYeccaolaccount(0);
report.setYeoaccount(0);
}
report.setMemo(" ");
int state = 0;
if ("truck".equals(type)) {
state = 2; // 汽车
} else if ("truckandtrain".equals(type)) {
state = 3; // 汽车与火车
} else {
state = 1; // 火车
}
// report.setEnteredboxesnumber(dailyreportService.getBoxSize(logSess
// .getCompanyCode(), time, state));
report.setEnteredboxesnumber(getBoxes(data));
report.setMEnteredboxesnumber(dailyreportService.getMEenteredBoxCount(
logSess.getCompanyCode(), time, state));
double oc = innfurnacereportService.getCoalnetWeight(time, logSess
.getCompanyCode());
report.setDccaccount(oc); // 月计划数重写修正 added by pq 2008-03-05
double monplan = 0.00;
double dweight = 0.0;
double mweight = 0.0;
double yweight = 0.0;
List<DataItem> ltra = data.getDailyDetailItem().getTrainData()
.getData();
for (int i = 0; i < ltra.size(); i++) {
DataItem di = (DataItem) ltra.get(i);
if (di.getType() == 3)
{
monplan += di.getMontchSchedule();
dweight += di.getDailyAmount();
mweight += di.getMonthAmount();
yweight += di.getYearAmount();
}
}
List<DataItem> ltru = data.getDailyDetailItem().getTruckData()
.getData();
for (int i = 0; i < ltru.size(); i++) {
DataItem di = (DataItem) ltru.get(i);
if (di.getType() == 3)
{
monplan += di.getMontchSchedule();
dweight += di.getDailyAmount();
mweight += di.getMonthAmount();
yweight += di.getYearAmount();
}
}
report.setMonthcoalplan(monplan);
report.setDecaccount(NumberFormat
.getDoubleNumberFormat(dweight));
report.setMeccoalaccount(NumberFormat
.getDoubleNumberFormat(mweight));
report.setYeccaolaccount(NumberFormat
.getDoubleNumberFormat(yweight));
// 日报主表数据来源 取快报数据。
FuelexpressService fuelService = (FuelexpressService) SpringContextUtil
.getBean("fuelexpressService");
FuelexpressqueryForm queryForm = new FuelexpressqueryForm();
queryForm.setBelongfactoryid(logSess.getCompanyCode());
queryForm.setReportdate(time);
Fuelexpress fuelexpress = fuelService
.getDailyreportByFuelexpress(queryForm);
if (fuelexpress != null) {
// 本日进煤
//report.setDecaccount(fuelexpress.getBalanceweight());
// 本日耗煤
report.setDccaccount(fuelexpress.getDispend());
// 煤库存
//report.setCoalremainaccount(fuelexpress.getStockpile());
}else {
// //本日进煤
// report.setDecaccount(0);
// //本日耗煤
// report.setDccaccount(0);
} data.setDailyMasterItem(report);
request.setAttribute("data", data);
request.setAttribute("action",
"dailyreportActionWithForm.do?action=saveReport");
request.getSession().setAttribute("reportDate", data);
//是否为月末
request.setAttribute("islastmonth", DateUtils
.isLastMonthOfDay(DateUtils.stringToDate(time, "yyyy-MM-dd")));

if ("truck".equals(type)) {
data.getDailyDetailItem().setType(2);
return mapping.findForward("showSingleAdd");
} else if ("train".equals(type)) {
data.getDailyDetailItem().setType(1);
return mapping.findForward("showSingleAdd");
} else if ("truckandtrain".equals(type)) {
data.getDailyDetailItem().setType(3);
return mapping.findForward("showdbAdd");
} else {
ActionMessages messages = new ActionMessages();
messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
"messages.delete", "你还没有配置系统参数！"));
this.saveMessages(request, messages);
return mapping.findForward("nodata");
}
}

Answer 6

然后再到另外一个地方读取
public ActionForward saveReport(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws BasicException {
LoginSessionServiceImp logSess = new LoginSessionServiceImp(request);
// 获取时间
String time = request.getParameter("selectTime");
String memo = request.getParameter("memo");// 备注
if (memo == null) {
memo = " ";
}
// 获得主报表数椐
String monthcoalremain = request.getParameter("monthcoalremain");// 月初结存
String tdccaccount = request.getParameter("tdccaccount");// 本日耗煤
String tdeoaccount = request.getParameter("tdeoaccount");// 本日进油
String monthoilremain = request.getParameter("monthoilremain");// 油月初结存
String tlaunchstyle = request.getParameter("tlaunchstyle");// 开机方式
String tdailywaste = request.getParameter("tdailywaste");// 本日煤损耗
String toilwaste = request.getParameter("toilwaste");// 本日油损耗
String tdcoaccount = request.getParameter("tdcoaccount");// 本日耗油
//String tdecaccount = request.getParameter("tdecaccount"); // 本日进煤
//String tcoalremainaccount = request.getParameter("tcoalremainaccount"); //煤库存  // 获得火车本日调整数椐
String[] trainData = request.getParameterValues("tdailyAdjust");
String[] trainno = request.getParameterValues("trainno"); // 获取汽车本日调整数据
String[] truckData = request.getParameterValues("adailyAdjust");
String[] autono = request.getParameterValues("autono"); String[] mpmonthcoalremain = request
.getParameterValues("mpmonthcoalremain");// 煤月初结存
String[] mpdecaccount = request.getParameterValues("mpdecaccount");// 本日进煤
String[] mpdccaccount = request.getParameterValues("mpdccaccount");// 本日耗煤
String[] mpdeoaccount = request.getParameterValues("mpdeoaccount");// 本日进油
String[] mpmonthoilremain = request
.getParameterValues("mpmonthoilremain");// 油月初结存
String[] mpdailywaste = request.getParameterValues("mpdailywaste");// 本日损耗
String[] mpdcoaccount = request.getParameterValues("mpdcoaccount");// 本日耗油
String[] storageName = request.getParameterValues("storageName");// 煤场名称 // 获取生成报表的数椐
DailyReportData data = (DailyReportData) request.getSession()
.getAttribute("reportDate");

List<DailyDetailReport> detailReportList = new ArrayList<DailyDetailReport>();
List<DataItem> trainList = null;
List<DataItem> truckList = null;
// /////try catch
try {
trainList = data.getDailyDetailItem().getTrainData().getData();
} catch (java.lang.NullPointerException e) {
trainList = new ArrayList<DataItem>();
}
try {
truckList = data.getDailyDetailItem().getTruckData().getData();
} catch (java.lang.NullPointerException e) {
truckList = new ArrayList<DataItem>();
}
double dec = 0D;
double mec = 0D;
double yec = 0D;
if (trainData != null) {
for (int i = trainData.length - 1; i >= 0; i--) {
double value = 0;
if (!"".equals(trainData[i])) {
value = Double.parseDouble(trainData[i]);
}
DataItem dataItem = trainList.get(Integer.parseInt(trainno[i]));
dataItem.setDailyAdjust(value); dataItem.setDailyAmount(dataItem.getDailyAmount() + value); if ("01".equals(time.substring(time.length() - 2))) {
dataItem.setMonthAmount(dataItem.getDailyAmount());
} else {
dataItem.setMonthAmount(dataItem.getMonthAmount() + value);
} if ("01-01".equals(time.substring(time.length() - 5))) {
dataItem.setYearAmount(dataItem.getDailyAmount());
} else {
dataItem.setYearAmount(dataItem.getYearAmount() + value);
}
dataItem.setMontchSchedule(dataItem.getMontchSchedule());
dec += dataItem.getDailyAmount();
mec += dataItem.getMonthAmount();
yec += dataItem.getYearAmount();
changeDate(trainList, Integer.parseInt(trainno[i]), value, time);
}
}
if (truckData != null) {
for (int i = truckData.length - 1; i >= 0; i--) {
double value = 0;
if (!"".equals(truckData[i])) {
value = Double.parseDouble(truckData[i]);
}
DataItem dataItem = truckList.get(Integer.parseInt(autono[i]));
dataItem.setDailyAdjust(value);
dataItem.setDailyAmount(dataItem.getDailyAmount() + value); if ("01".equals(time.substring(time.length() - 2))) {
dataItem.setMonthAmount(dataItem.getDailyAmount());
} else {
dataItem.setMonthAmount(dataItem.getMonthAmount() + value);
} if ("01-01".equals(time.substring(time.length() - 5))) {
dataItem.setYearAmount(dataItem.getDailyAmount());
} else {
dataItem.setYearAmount(dataItem.getYearAmount() + value);
} dataItem.setMontchSchedule(dataItem.getMontchSchedule());
dec += dataItem.getDailyAmount();
mec += dataItem.getMonthAmount();
yec += dataItem.getYearAmount();
changeDate(truckList, Integer.parseInt(autono[i]), value, time); }
}
// 分别将火车数椐和汽车数据的form对象封装为持久化对象
Iterator<DataItem> iterator = trainList.iterator();
int order = 0;
int boxnum = 0;
double dadjustaccount = 0;
while (iterator.hasNext()) {
DataItem dataItem = iterator.next();
DailyDetailReport datailReport = new DailyDetailReport();
datailReport.setBelongfactoryid(logSess.getCompanyCode());
datailReport.setBriefname(dataItem.getCaption());
datailReport.setDadjustaccount(NumberFormat
.getDoubleNumberFormat(dataItem.getDailyAdjust()));
datailReport.setDecaccount(NumberFormat
.getDoubleNumberFormat(dataItem.getDailyAmount()));
datailReport.setMeccoalaccount(NumberFormat
.getDoubleNumberFormat(dataItem.getMonthAmount()));
datailReport.setMonthcoalplan(NumberFormat
.getDoubleNumberFormat(dataItem.getMontchSchedule()));
datailReport.setProvideridinbill(dataItem.getKey());
datailReport.setRecordtype(1);
datailReport.setNo(++order);
datailReport.setDataitemtype(dataItem.getType());
datailReport.setYeccaolaccount(dataItem.getYearAmount());
datailReport.setBoxnum(dataItem.getBoxnum());
if(1 == dataItem.getType()){
boxnum += dataItem.getBoxnum();
dadjustaccount += dataItem.getDailyAdjust();
}
detailReportList.add(datailReport);
}

Answer 7

你把两次的Session ID 打印出来看看，看看是否一致

Answer 8

用debug调试一下看看session的状态