我正在使用 spring Mvc 框架。我的 Controller 类如下所示。
public class UpdateStockController extends AbstractWizardFormController {
StockRegisterService stockRegisterService;
DimensionStoneService dimensionStoneService;
MineralService mineralService;
AutoPopulatingList openDimensionStoneBeans=new AutoPopulatingList(DimensionStoneBean.class);
AutoPopulatingList todayDimensionStoneBeans=new AutoPopulatingList(DimensionStoneBean.class);
StockRegister stockRegister;
List<DimensionStone> openDimensionStones=new ArrayList<DimensionStone>();
List<DimensionStone> todayDimensionStones=new ArrayList<DimensionStone>();
float cumulativeStockOrg;
boolean flag1;
boolean flag2;
public StockRegisterService getStockRegisterService() {
return stockRegisterService;
}
public void setStockRegisterService(StockRegisterService stockRegisterService) {
this.stockRegisterService = stockRegisterService;
}
public DimensionStoneService getDimensionStoneService() {
return dimensionStoneService;
}
public void setDimensionStoneService(DimensionStoneService dimensionStoneService) {
this.dimensionStoneService = dimensionStoneService;
}
public MineralService getMineralService() {
return mineralService;
}
public void setMineralService(MineralService mineralService) {
this.mineralService = mineralService;
}
public UpdateStockController(){
setSessionForm(true);
}
@Override
protected Object formBackingObject(HttpServletRequest request)throws Exception {
String applicationId=null;
String serviceId=null;
try{
applicationId=(String)request.getParameter("appId").trim();
serviceId=(String)request.getParameter("serviceId").trim();
}catch (NullPointerException e) {
HttpSession session=request.getSession();
applicationId=(String) session.getAttribute("applicationId");
serviceId=(String) session.getAttribute("serviceId");
}
String mineralId=(String)request.getParameter("mineralIdAndName").trim().split(":")[0];
String mineralName=(String)request.getParameter("mineralIdAndName").trim().split(":")[1];
if(mineralId.equals("10")){
flag2=true;
}
System.out.println("..............................flag2 : "+flag2+".......................");
System.out.println("..............................flag1 : "+flag1+".......................");
HttpSession session=request.getSession();
session.setAttribute("applicationId", applicationId);
session.setAttribute("serviceId",serviceId);
Date productionDate=new Date();
UpdateStockBean updateStockBean=new UpdateStockBean();
updateStockBean.setMineralId(mineralId);
updateStockBean.setMineralName(mineralName);
updateStockBean.setAccidentOccured("NO");
updateStockBean.setCompPaid("NO");
stockRegister=new StockRegister();
@SuppressWarnings("rawtypes")
List ckeckTodayStockRegisterList=stockRegisterService.retrieveDataFromStockRegister(applicationId,productionDate,mineralId);
if(ckeckTodayStockRegisterList.isEmpty()){
System.out.println("..............................If1.......................");
@SuppressWarnings("rawtypes")
List openingBalFromPreviousStockRegisterList=stockRegisterService.retrieveOpeningBalance(applicationId,mineralId);
flag1=true;
if (!openingBalFromPreviousStockRegisterList.isEmpty()) {
System.out.println("..............................If2.......................");
flag1=false;
stockRegister=(StockRegister)openingBalFromPreviousStockRegisterList.get(0);
stockRegister.setStockRegisterId(0);
if(stockRegister.getBalanceQuantity()!=null){
updateStockBean.setOpenbalance(stockRegister.getBalanceQuantity());
}
cumulativeStockOrg=stockRegister.getCumulativeStock();
System.out.println(".............................."+cumulativeStockOrg+".......................");
}
}else{
System.out.println("..............................else.......................");
stockRegister=(StockRegister) ckeckTodayStockRegisterList.get(0);
long stockRegId=stockRegister.getStockRegisterId();
openDimensionStones=dimensionStoneService.getOpenDimensionStones(stockRegId);
todayDimensionStones=dimensionStoneService.getTodayDimensionStones(stockRegId);
updateStockBean.setOpenbalance(stockRegister.getOpeningBal());
updateStockBean.setTodayproduction(stockRegister.getQuantityProduced());
updateStockBean.setNoOfMale(stockRegister.getNoOfMaleEmp());
updateStockBean.setNoOfFemale(stockRegister.getNoOfFemaleEmp());
updateStockBean.setAccidentOccured(stockRegister.getAccidentOccured());
updateStockBean.setDescriptionAccident(stockRegister.getAccidentDescription());
updateStockBean.setCompPaid(stockRegister.getCompensationPaid());
updateStockBean.setCompDetails(stockRegister.getCompensationDet());
updateStockBean.setCompAmount(stockRegister.getCompensationAmt());
cumulativeStockOrg=stockRegister.getCumulativeStock()-stockRegister.getQuantityProduced();
for (Iterator<DimensionStone> iterator = openDimensionStones.iterator(); iterator.hasNext();) {
System.out.println("..............................Haii77777777777.......................");
DimensionStone dimensionStone=iterator.next();
DimensionStoneBean dimensionStoneBean=new DimensionStoneBean();
dimensionStoneBean.setStoneNo(Integer.parseInt(dimensionStone.getStoneNo().toString()));
dimensionStoneBean.setLength(dimensionStone.getLength());
dimensionStoneBean.setBreadth(dimensionStone.getBreadth());
dimensionStoneBean.setHeight(dimensionStone.getHeight());
dimensionStoneBean.setDimension(dimensionStone.getDimension());
dimensionStoneBean.setIsIssued(dimensionStone.getIsIssued());
openDimensionStoneBeans.add(dimensionStoneBean);
}
updateStockBean.setOpenDimensionStones(openDimensionStoneBeans);
for (Iterator<DimensionStone> iterator = todayDimensionStones.iterator(); iterator.hasNext();) {
System.out.println("..............................Haiiii8888888888888.......................");
DimensionStone dimensionStone=iterator.next();
DimensionStoneBean dimensionStoneBean=new DimensionStoneBean();
dimensionStoneBean.setStoneNo(Integer.parseInt(dimensionStone.getStoneNo().toString()));
dimensionStoneBean.setLength(dimensionStone.getLength());
dimensionStoneBean.setBreadth(dimensionStone.getBreadth());
dimensionStoneBean.setHeight(dimensionStone.getHeight());
dimensionStoneBean.setDimension(dimensionStone.getDimension());
dimensionStoneBean.setIsIssued(dimensionStone.getIsIssued());
todayDimensionStoneBeans.add(dimensionStoneBean);
}
updateStockBean.setTodayDimensionStones(todayDimensionStoneBeans);
}
return updateStockBean;
}
@SuppressWarnings("unchecked")
@Override
protected ModelAndView processFinish(HttpServletRequest req,HttpServletResponse res, Object cmd, BindException be)
throws Exception {
float cumulativeStock;
float dimensionCumulativeVolume=cumulativeStockOrg;
UpdateStockBean bean = (UpdateStockBean)cmd;
Long openingBalance=bean.getOpenbalance();
Long quantityProduced=(Long)bean.getTodayproduction();
Long totalQuantity=openingBalance+quantityProduced;
Long balanceQuantity=totalQuantity;
System.out.println("..............................flag2 : "+flag2+".......................finish");
System.out.println("..............................flag1 : "+flag1+".......................finish");
if(flag1){
System.out.println("..............................flag true.......................1");
cumulativeStock=(Float.parseFloat(openingBalance.toString())+Float.parseFloat(quantityProduced.toString()));
}else{
System.out.println("..............................flag false.......................1");
cumulativeStock=cumulativeStockOrg+quantityProduced;
}
System.out.println(".............................."+cumulativeStock+".......................1");
if(stockRegister.getStockRegisterId()==0){
stockRegister.setStockRegisterId(stockRegisterService.getMaximumValueStockRegisterId()+1);
}
Application application=new Application();
application.setApplicationId(Long.parseLong(req.getSession().getAttribute("applicationId").toString().trim()));
stockRegister.setApplication(application);
stockRegister.setProductionDate(new SimpleDateFormat("dd-MMM-yyyy").parse(bean.getProductiondate()));
stockRegister.setOpeningBal(openingBalance);
stockRegister.setMineralId(Long.parseLong(bean.getMineralId()));
stockRegister.setQuantityProduced(quantityProduced);
stockRegister.setTotalQuantity(totalQuantity);
stockRegister.setBalanceQuantity(balanceQuantity);
stockRegister.setNoOfFemaleEmp((Integer)bean.getNoOfFemale());
stockRegister.setNoOfMaleEmp(bean.getNoOfMale());
stockRegister.setAccidentOccured(bean.getAccidentOccured());
stockRegister.setAccidentDescription(bean.getDescriptionAccident());
stockRegister.setCompensationPaid(bean.getCompPaid());
stockRegister.setCompensationAmt(bean.getCompAmount());
stockRegister.setCompensationDet(bean.getCompDetails());
stockRegister.setCumulativeStock(cumulativeStock);
System.out.println(".............................."+cumulativeStock+".......................2");
dimensionStoneService.deleteDimensionStonesOnToday(openDimensionStones);
dimensionStoneService.deleteDimensionStonesOnToday(todayDimensionStones);
openDimensionStoneBeans=bean.getOpenDimensionStones();
if(openDimensionStoneBeans.size()>bean.getOpenbalance()){
int size=openDimensionStoneBeans.size();
int j=(int) bean.getOpenbalance();
for(int i=(int) bean.getOpenbalance();i<size;i++){
openDimensionStoneBeans.remove(j);
}
bean.setOpenDimensionStones(openDimensionStoneBeans);
cmd=(Object)bean;
}
openDimensionStones=new ArrayList<DimensionStone>();
for (Iterator<DimensionStoneBean> iterator = openDimensionStoneBeans.iterator(); iterator.hasNext();) {
System.out.println("..............................Haiiiii11111.......................");
DimensionStoneBean dimensionStoneBean = iterator.next();
DimensionStone dimensionStone=new DimensionStone();
dimensionStone.setStoneNo(Long.parseLong(((Integer)dimensionStoneBean.getStoneNo()).toString()));
dimensionStone.setLength(dimensionStoneBean.getLength());
dimensionStone.setBreadth(dimensionStoneBean.getBreadth());
dimensionStone.setHeight(dimensionStoneBean.getHeight());
dimensionStone.setDimension(dimensionStoneBean.getDimension());
dimensionStone.setIsIssued(dimensionStoneBean.getIsIssued());
dimensionStone.setStockType("opening");
dimensionStone.setStockRegisterId(stockRegister.getStockRegisterId());
dimensionCumulativeVolume=dimensionCumulativeVolume+dimensionStoneBean.getDimension();
openDimensionStones.add(dimensionStone);
}
todayDimensionStoneBeans=bean.getTodayDimensionStones();
if(todayDimensionStoneBeans.size()>bean.getTodayproduction()){
int size=todayDimensionStoneBeans.size();
int j=(int) bean.getTodayproduction();
for(int i=(int) bean.getTodayproduction();i<size;i++){
todayDimensionStoneBeans.remove(j);
}
bean.setTodayDimensionStones(todayDimensionStoneBeans);
cmd=(Object)bean;
}
todayDimensionStones=new ArrayList<DimensionStone>();
for (Iterator<DimensionStoneBean> iterator = todayDimensionStoneBeans.iterator(); iterator.hasNext();) {
System.out.println("..............................Haiiiii22222.......................");
DimensionStoneBean dimensionStoneBean = iterator.next();
DimensionStone dimensionStone=new DimensionStone();
dimensionStone.setStoneNo(Long.parseLong(((Integer)dimensionStoneBean.getStoneNo()).toString()));
dimensionStone.setLength(dimensionStoneBean.getLength());
dimensionStone.setBreadth(dimensionStoneBean.getBreadth());
dimensionStone.setHeight(dimensionStoneBean.getHeight());
dimensionStone.setDimension(dimensionStoneBean.getDimension());
dimensionStone.setIsIssued(dimensionStoneBean.getIsIssued());
dimensionStone.setStockType("current");
dimensionStone.setStockRegisterId(stockRegister.getStockRegisterId());
dimensionCumulativeVolume=dimensionCumulativeVolume+dimensionStoneBean.getDimension();
todayDimensionStones.add(dimensionStone);
}
if(flag2){
System.out.println(".............................."+dimensionCumulativeVolume+".......................3");
stockRegister.setCumulativeStock(dimensionCumulativeVolume);
}
stockRegisterService.saveOrupdateStockRegister(stockRegister);
dimensionStoneService.saveOrupdateDimensionStones(openDimensionStones);
openDimensionStoneBeans.clear();
dimensionStoneService.saveOrupdateDimensionStones(todayDimensionStones);
todayDimensionStoneBeans.clear();
HttpSession session=req.getSession();
String appId=(String) session.getAttribute("applicationId");
String serviceId=(String) session.getAttribute("serviceId");
String mineralIdAndName=bean.getMineralId()+":"+bean.getMineralName();
return new ModelAndView(new InternalResourceView("updateStock.c?appId="+appId+"&serviceId="+serviceId+"&mineralIdAndName="+mineralIdAndName));
}
@Override
protected ModelAndView processCancel(HttpServletRequest request,HttpServletResponse response, Object command, BindException errors)
throws Exception {
UpdateStockBean bean=(UpdateStockBean)command;
String cancelCheck=request.getParameter("cancelCheck");
HttpSession session=request.getSession();
String appId=(String) session.getAttribute("applicationId");
String serviceId=(String) session.getAttribute("serviceId");
String mineralIdAndName=bean.getMineralId()+":"+bean.getMineralName();
if(cancelCheck.equals("1")){
response.sendRedirect("tabs.c?action=home_tab_emp");
return new ModelAndView(new InternalResourceView("tabs.nic?action=home_tab_emp"));
}else if(cancelCheck.equals("2")){
return new ModelAndView(new InternalResourceView("updateStock.c?appId="+appId+"&serviceId="+serviceId+"&mineralIdAndName="+mineralIdAndName));
}else{
response.sendRedirect("tabs.nic?action=mineralSelect&appId="+appId+"&serviceId="+serviceId);
return new ModelAndView(new InternalResourceView("tabs.c?action=mineralSelect&appId="+appId+"&serviceId="+serviceId));
}
}
@Override
protected void validatePage(Object command, Errors errors, int page) {
UpdateStockValidator updateStockValidator=new UpdateStockValidator();
switch(page){
case 0:
updateStockValidator.validateFormStart(command, errors);
break;
case 1:
break;
case 2:
updateStockValidator.validateForm2(command, errors);
break;
case 3:
updateStockValidator.validateForm3(command, errors);
break;
case 4:
updateStockValidator.validateFormStart(command, errors);
break;
}
}
@Override
@SuppressWarnings({ "rawtypes", "unchecked"})
protected Map referenceData(HttpServletRequest request, Object command,Errors errors, int page) throws Exception {
Map map = new HashMap();
UpdateStockBean bean = (UpdateStockBean)command;
String applicationId=(String) request.getSession().getAttribute("applicationId");
String mineralId=bean.getMineralId();
Date productionDate=new Date();
Calendar cal = new GregorianCalendar();
cal.setTime(productionDate);
cal.add(Calendar.DAY_OF_MONTH, -30);
Date today30 = cal.getTime();
map.put("stockRegisters", stockRegisterService.stockRegisterBetweenTwoDaysWithApplicationId(applicationId,mineralId,today30,productionDate));
map.put("ckeckOpeningBalance",stockRegisterService.retrieveDataBeforeProductionDate(applicationId,mineralId,productionDate));
map.put("ckeckDimensionStone",mineralService.getMineralByApplicationId(applicationId));
map.put("mineralList",mineralService.getMineralObjectsByApplicationId(applicationId));
openDimensionStoneBeans=bean.getOpenDimensionStones();
if(openDimensionStoneBeans.size()>bean.getOpenbalance()){
int size=openDimensionStoneBeans.size();
int j=(int) bean.getOpenbalance();
for(int i=(int) bean.getOpenbalance();i<size;i++){
openDimensionStoneBeans.remove(j);
}
bean.setOpenDimensionStones(openDimensionStoneBeans);
command=(Object)bean;
}
todayDimensionStoneBeans=bean.getTodayDimensionStones();
if(todayDimensionStoneBeans.size()>bean.getTodayproduction()){
int size=todayDimensionStoneBeans.size();
int j=(int) bean.getTodayproduction();
for(int i=(int) bean.getTodayproduction();i<size;i++){
todayDimensionStoneBeans.remove(j);
}
bean.setTodayDimensionStones(todayDimensionStoneBeans);
command=(Object)bean;
}
return map;
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
protected ModelAndView showForm(HttpServletRequest req,HttpServletResponse res, BindException be) throws Exception {
HttpSession ses = req.getSession();
Map pageMap = new HashMap();
pageMap.put("erType", "");
pageMap.put("pageType", "");
if(ses.getAttribute("connection") == null){
pageMap.put("erType", "sessionExpired");
//pageMap.put("pageType", "inner");
return new ModelAndView("page1",pageMap);
}
try{
if(ses.getAttribute("loginType").toString().trim().equals("Employee")){
}else if(ses.getAttribute("loginType").toString().trim().equals("Applicant")){
}else if(ses.getAttribute("loginType").toString().trim().equals("Agent")){
}
}catch (Exception e){e.printStackTrace();return new ModelAndView(new InternalResourceView("login.nic"));}
return super.showForm(req, res, be);
}
}
这里是变量
List<DimensionStone> openDimensionStones=new ArrayList<DimensionStone>();
List<DimensionStone> todayDimensionStones=new ArrayList<DimensionStone>();
float cumulativeStockOrg;
boolean flag1;
boolean flag2;
是初始化的，执行后不会被清除。也就是说变量的值在另一个执行中也存在。因此程序逻辑无法正常工作
配置文件是
<beans>
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="updateStock.c">UpdateStockController</prop>
</props>
</property>
</bean>
<bean id="UpdateStockController" class="mams.web.UpdateStockController">
<property name="commandName"><value>updateStock</value></property>
<property name="commandClass">
<value>mams.web.beans.UpdateStockBean</value>
</property>
<property name="stockRegisterService" ref="StockRegisterService"></property>
<property name="dimensionStoneService" ref="DimensionStoneService"></property>
<property name="mineralService" ref="MineralService"></property>
<property name="validator" ref="UpdateStockValidator"></property>
<property name="pages">
<list>
<!-- <value>showMineralsForStock</value>-->
<value>updateStock</value>
<value>addOrEditOpenBalane</value>
<value>addOrEditOpenDimensionStone</value>
<value>addOrEditTodayDimensionStone</value>
<value>updateStock</value>
</list>
</property>
</bean>
最佳答案
Spring Controller 是单例，因此如果您在方法执行中依赖全局变量而没有线程安全实现，那么您就做错了。
您会遇到意想不到的行为。
将这些变量设置为您需要它们的方法的本地变量，应该没问题。
关于java - Spring MVC 中 Controller 类未重新初始化，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15944697/