I'll explain the situation.
I have an application web, java + spring + hibernate. Actually, i want to integrate DWR with Spring, so I did all the configuration and I think what I did works fine since I get this windows:
Now, we can focus on the findUsername(String username) methodo inside the dwr code:
#Autowired
UserBo userBo;
public boolean findUsername(String username) {
System.out.println("I'm in the DWR");
try {
User user = userBo.findByUsername(username);
if(user != null) {
return true;
}
else {
return false;
}
}
catch (Exception e) {
System.out.println(e.toString());
return false;
}
}
And this is the code of userBo.findByUsername(String username) methodo:
public User findByUsername(String username) {
System.out.println("I'm in the BO");
return userDao.findByUsername(username);
}
And the DAO Code:
#Transactional
public User findByUsername(String username) {
session = sessionFactory.openSession();
System.out.println("I'm in the DAO");
String hql = "FROM User Tab WHERE Tab.username= :username";
Query query = session.createQuery(hql);
query.setParameter("username", username);
#SuppressWarnings("unchecked")
List<User> userFound = (List<User>) query.list();
if (userFound.size() > 0) {
session.close();
return userFound.get(0);
}
return null;
}
But when the code reach userBo.findByUsername(username); method call i get the NullPointerException.
I'm pretty sure the bo + day working good because I've used it in some other part of the application.
I don't understand the problem.
Can someone help me?
EDIT: The StackTrace
lcc.dwr.CCServiceDWR.findUsername(CCServiceDWR.java:26)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.directwebremoting.impl.CreatorModule$1.doFilter(CreatorModule.java:229)
org.directwebremoting.impl.CreatorModule.executeMethod(CreatorModule.java:241)
org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:379)
org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:332)
org.directwebremoting.dwrp.BaseCallHandler.handle(BaseCallHandler.java:104)
org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:120)
org.directwebremoting.spring.DwrController.handleRequestInternal(DwrController.java:234)
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:822)
javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
If spring context is fully initialized spring guarantees that all #autowired fields are not-null beans.
However if you call some bean's method before spring context is fully initialized, the #autowired field can be null.
Check if you call findUsername(String username) before context is ready and if yes - this may be the reason...
If you want to do some call and be sure that context is ready try such pattern:
#Component
public class SpringContextMonitor implements ApplicationListener<ApplicationEvent> {
#Autowired
private SomeDao dao;
...
#Override
public void onApplicationEvent(ApplicationEvent event) {
if (event instanceof ContextRefreshedEvent) {
onStart((ContextRefreshedEvent) event);
}
}
private void onStart(ContextRefreshedEvent event) {
// do your initialization here
dao.getSomething();
dao2.getSomething();
...
}
...
}
In that code, method onStart is call just after context become ready.
Found the problem: I misses this line in the dwr-servlet.xml
<context:component-scan base-package="lcc.*" />
Related
My goal is to find out what columns where changed during an update on my MySQL database.
My first idea was to use the Hibernate Event System. I have implemented a PreUpdateEventListener. The event allows access to the changed object and I'm retrieving the older object from the database. I am using the Java Object Diff Library to compare the two objects. Since I only need the first layer to be compared I configured the Comparator as follows:
public static List<String> compareTillFirstLayer(Object pre, Object post) {
ArrayList<String> changedProperties = new ArrayList<String>();
InclusionResolver inclusionResolver = new InclusionResolver() {
#Override
public Inclusion getInclusion(DiffNode node) {
if (node.getParentNode().isRootNode()) {
return Inclusion.INCLUDED;
}
return null;
}
#Override
public boolean enablesStrictIncludeMode() {
return true;
}
};
ObjectDiffer objectDiffer = ObjectDifferBuilder.startBuilding().inclusion().resolveUsing(inclusionResolver)
.and().build();
DiffNode root = objectDiffer.compare(pre, post);
root.visitChildren(new DiffNode.Visitor() {
#Override
public void node(DiffNode node, Visit visit) {
changedProperties.add(node.getPropertyName());
}
});
return changedProperties;
}
This returns the changed properties of the object. To find the connection to the database columns I use the Hibernate Configuration and it's mapping like this:
for (String property : changedProperties) {
PersistentClass persistentClass = HibernateUtil.getHibernateUtil().getConfiguration()
.getClassMapping(Consumer.class.getName());
String columnName = ((Column) persistentClass.getProperty(property).getColumnIterator().next())
.getName();
System.out.println(columnName);
}
This workes just fine for my Consumer object but it fails with other objects like an Appointment or a Vehicle object.
Even the exceptions differ from object to object.
If I try to monitor the changes of the Appointment I recieve the following exception:
java.util.NoSuchElementException
at java.util.ArrayList$Itr.next(ArrayList.java:854)
at de.applicodata.serviceportal.persistence.hibernateEventListeners.PreUpdateEventImpl.onPreUpdate(PreUpdateEventImpl.java:88)
at org.hibernate.action.EntityUpdateAction.preUpdate(EntityUpdateAction.java:237)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:86)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:185)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at de.applicodata.serviceportal.persistence.dao.GeneralDAO.commit(GeneralDAO.java:189)
at de.applicodata.serviceportal.persistence.dao.GeneralDAO.update(GeneralDAO.java:556)
at de.applicodata.serviceportal.logic.entities.Appointment.updatePersistenceObject(Appointment.java:167)
at de.applicodata.serviceportal.faces.beans.MyAppointmentsBean.updateAppointmemt(MyAppointmentsBean.java:777)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.el.parser.AstValue.invoke(AstValue.java:279)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at org.jboss.weld.module.web.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.module.web.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at net.bull.javamelody.JsfActionListener.processAction(JsfActionListener.java:67)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:89)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:239)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:215)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at de.applicodata.serviceportal.faces.listener.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at de.applicodata.serviceportal.faces.listener.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:129)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1136)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
While monitoring changes on the Vehicle object I receiver the following exception although the Objects are diffrent from another:
java.lang.IllegalStateException: Couldn't find a differ for type: [B
at de.danielbechler.diff.differ.DifferProvider.retrieveDifferForType(DifferProvider.java:55)
at de.danielbechler.diff.differ.DifferDispatcher.compare(DifferDispatcher.java:196)
at de.danielbechler.diff.differ.DifferDispatcher.compareWithCircularReferenceTracking(DifferDispatcher.java:172)
at de.danielbechler.diff.differ.DifferDispatcher.compare(DifferDispatcher.java:159)
at de.danielbechler.diff.differ.DifferDispatcher.dispatch(DifferDispatcher.java:105)
at de.danielbechler.diff.differ.BeanDiffer.compareUsingIntrospection(BeanDiffer.java:114)
at de.danielbechler.diff.differ.BeanDiffer.compareUsingAppropriateMethod(BeanDiffer.java:104)
at de.danielbechler.diff.differ.BeanDiffer.compare(BeanDiffer.java:90)
at de.danielbechler.diff.differ.DifferDispatcher.compare(DifferDispatcher.java:202)
at de.danielbechler.diff.differ.DifferDispatcher.compareWithCircularReferenceTracking(DifferDispatcher.java:172)
at de.danielbechler.diff.differ.DifferDispatcher.compare(DifferDispatcher.java:159)
at de.danielbechler.diff.differ.DifferDispatcher.dispatch(DifferDispatcher.java:105)
at de.danielbechler.diff.ObjectDiffer.compare(ObjectDiffer.java:52)
at de.applicodata.serviceportal.persistence.hibernateEventListeners.HibernateEventObjectComparator.compareTillFirstLayer(HibernateEventObjectComparator.java:34)
at de.applicodata.serviceportal.persistence.hibernateEventListeners.PreUpdateEventImpl.onPreUpdate(PreUpdateEventImpl.java:63)
at org.hibernate.action.EntityUpdateAction.preUpdate(EntityUpdateAction.java:237)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:86)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:185)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at de.applicodata.serviceportal.persistence.dao.GeneralDAO.commit(GeneralDAO.java:189)
at de.applicodata.serviceportal.persistence.dao.GeneralDAO.update(GeneralDAO.java:556)
at de.applicodata.serviceportal.logic.entities.Vehicle.updatePersistenceObject(Vehicle.java:509)
at de.applicodata.serviceportal.faces.beans.WerWiSalesVehicleBean.updateVehicle(WerWiSalesVehicleBean.java:1892)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.el.parser.AstValue.invoke(AstValue.java:279)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at org.jboss.weld.module.web.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.module.web.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at net.bull.javamelody.JsfActionListener.processAction(JsfActionListener.java:67)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:89)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:239)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:215)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at de.applicodata.serviceportal.faces.listener.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at de.applicodata.serviceportal.faces.listener.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:129)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:357)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1136)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
I really don't know where to start on this one since the exceptions are so different from eachother. Any tips on what might cause this behaviour are appreciated!
If any further information is needed I'll provide it.
Edit: The Vehicle error is kind of resolved. It was due to a missing feature in the before mentioned Java Object Diff Library. Source I am currently working on a workaround for excluding arrays from the comparison
The first part of the question is answered. Due to the Java Object Diff Library not beeing able to work with arrays I decided to just exclude these from the comparison.
This works just fine with the rewritten compareTillFirstLayer method like this:
public class HibernateEventObjectComparator {
public final static InclusionResolver inclusionResolver = new InclusionResolver() {
#Override
public Inclusion getInclusion(DiffNode node) {
if (node.getParentNode().isRootNode() && node.getValueType().isArray()) {
return Inclusion.EXCLUDED;
} else if (node.getParentNode().isRootNode()) {
return Inclusion.INCLUDED;
} else {
return null;
}
}
#Override
public boolean enablesStrictIncludeMode() {
return true;
}
};
public static List<String> compareTillFirstLayer(Object pre, Object post) {
ArrayList<String> changedProperties = new ArrayList<String>();
ObjectDiffer objectDiffer = ObjectDifferBuilder.startBuilding().inclusion().resolveUsing(inclusionResolver)
.and().build();
DiffNode root = objectDiffer.compare(pre, post);
root.visitChildren(new DiffNode.Visitor() {
#Override
public void node(DiffNode node, Visit visit) {
changedProperties.add(node.getPropertyName());
}
});
return changedProperties;
}
...
EDIT: The second problme is solved as well.
The list of columns I got from hibernate was empty if it referred to a collection. Since I didn't need these columns I'm simply checking if a column is availabe and only iterate over the columns array if there are columns inside. Sadly I have no answer to why the columns array for any collection is empty.
I have an endpoint on my controller which takes a list of IDs. For each ID I fetch details from a REST endpoint which I would like to do asynchronously. This is my implementation:
#PostMapping("/leaderboard")
#ApiOperation("Get clients leaderboard statistics")
public List<Dto> clientLeaderboard(#RequestBody List<String> accountIds) {
IntStream.range(0, accountIds.size()).parallel().forEach(i -> {
AccountDTO accountDTO = accountMaintenanceRestClient.getAccount(accountIds.get(i));
// More logic
}
}
This then gives me the error:
Unhandled exception occurred
java.lang.IllegalStateException: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
I've actually experienced this error before and managed to fix it in an answer here. Is the same solution applicable here? If so how can I provide my existing executor to this parallel stream?
Edit
AccountMaintenanceRestClient code. I'm using OpenFeign as part of this.
public interface AccountMaintenanceRestClient {
#RequestLine("GET /account/{accountId}")
#Profiled(tag = "AccountMaintenanceRestClient.{$0}.getAccountBalance", logFailuresSeparately = true)
AccountDTO getAccount(#Param("accountId") String accountId);
#RequestLine("GET /referencedata/statuscode")
#Profiled(tag = "AccountMaintenanceRestClient.getStatusCodes", logFailuresSeparately = true)
Map<String, String> getStatusCodes();
#RequestLine("GET /referencedata/websites")
#Profiled(tag = "AccountMaintenanceRestClient.getWebsitesIds", logFailuresSeparately = true)
List<WebSiteDTO> getWebsitesIds();
}
Stacktrace:
java.lang.IllegalStateException: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:593)
at java.util.concurrent.ForkJoinTask.reportException(ForkJoinTask.java:677)
at java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:735)
at java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:160)
at java.util.stream.ForEachOps$ForEachOp$OfInt.evaluateParallel(ForEachOps.java:189)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233)
at java.util.stream.IntPipeline.forEach(IntPipeline.java:404)
at java.util.stream.IntPipeline$Head.forEach(IntPipeline.java:560)
at com.foobar.wt.igip.gateway.web.controllers.surge.paris.SurgeParisController.clientLeaderboard(SurgeParisController.java:58)
at com.foobar.wt.igip.gateway.web.controllers.surge.paris.SurgeParisController$$FastClassBySpringCGLIB$$a143909.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:667)
at com.foobar.wt.igip.gateway.web.controllers.surge.paris.SurgeParisController$$EnhancerBySpringCGLIB$$67cb3a1e.clientLeaderboard(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:854)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:765)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.boot.web.filter.ApplicationContextHeaderFilter.doFilterInternal(ApplicationContextHeaderFilter.java:54)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:111)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at uk.co.igindex.commons.bluegreen.IGClusterDetailsFilter.doFilter(IGClusterDetailsFilter.java:46)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:208)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:128)
at org.springframework.boot.web.support.ErrorPageFilter.access$000(ErrorPageFilter.java:66)
at org.springframework.boot.web.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:103)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.boot.web.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:121)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1757)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1716)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:131)
at org.springframework.web.context.support.WebApplicationContextUtils.currentRequestAttributes(WebApplicationContextUtils.java:309)
at org.springframework.web.context.support.WebApplicationContextUtils.access$400(WebApplicationContextUtils.java:64)
at org.springframework.web.context.support.WebApplicationContextUtils$RequestObjectFactory.getObject(WebApplicationContextUtils.java:325)
at org.springframework.web.context.support.WebApplicationContextUtils$RequestObjectFactory.getObject(WebApplicationContextUtils.java:320)
at org.springframework.beans.factory.support.AutowireUtils$ObjectFactoryDelegatingInvocationHandler.invoke(AutowireUtils.java:307)
at com.sun.proxy.$Proxy134.getHeader(Unknown Source)
at com.foobar.wt.igip.gateway.support.FeignSSOTokenRequestInterceptor.apply(FeignSSOTokenRequestInterceptor.java:22)
at feign.SynchronousMethodHandler.targetRequest(SynchronousMethodHandler.java:158)
at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:88)
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76)
at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:103)
at com.sun.proxy.$Proxy156.getAccount(Unknown Source)
at com.foobar.wt.igip.gateway.web.controllers.surge.paris.SurgeParisController.lambda$clientLeaderboard$2(SurgeParisController.java:59)
at java.util.stream.ForEachOps$ForEachOp$OfInt.accept(ForEachOps.java:205)
at java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:110)
at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:291)
at java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:731)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
FeignSSOTokenRequestInterceptor:
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.servlet.http.HttpServletRequest;
#Component
public class FeignSSOTokenRequestInterceptor implements RequestInterceptor {
private static final String SSO_HEADER_NAME = "X-SECURITY-TOKEN";
private final HttpServletRequest request;
#Autowired
public FeignSSOTokenRequestInterceptor(HttpServletRequest request) {
this.request = request;
}
#Override
public void apply(RequestTemplate requestTemplate) {
requestTemplate.header(SSO_HEADER_NAME, request.getHeader(SSO_HEADER_NAME));
}
}
Your FeignSSOTokenRequestInterceptor depends on HttpServletRequest proxied bean.
The request is exposed via threadlocal so threads in threadpool has no knowledge/aware of it, hence exception occurs when it try to read the request from threadlocal map.
So basically the problem narrowed down to how to set the request to the threadpool's thread context.
Setup a threadpool like your referenced post then submit the task,
#Autowired
ThreadPoolTaskExecutor poolExecutor;
CountdownLatch counter = new CountdownLatch(accountIds.size());
IntStream.range(0, accountIds.size()) // Note that .parallel is omitted
.forEach(() -> poolExecutor.submit(() -> {
try {
your task
} finally {
counter.countDown();
}
}))
counter.await(); // Wait for all tasks complete
This is prefered way, because the default parallel stream is used a common shared pool, you should not place a task has heavy IO like API access to that)
I would like to throw some light on the question.
FeignSSOTokenRequestInterceptor is your custom RequestInterceptor and you are trying to access ServletRequest inside the apply method which is evident from the stack trace
RequestObjectFactory.getObject(WebApplicationContextUtils.java:320)
This RequestObjectFactory is a static inner class which gives you access the current request
private static class RequestObjectFactory implements ObjectFactory<ServletRequest>, Serializable {
private RequestObjectFactory() {
}
public ServletRequest getObject() {
return WebApplicationContextUtils.currentRequestAttributes().getRequest();
}
public String toString() {
return "Current HttpServletRequest";
}
}
the current request is derived from the RequestContextHolder class which gets the attribute from the current thread as shown below after a series of method calls
//This is the current thread which holds the request attributes
private static final ThreadLocal<RequestAttributes> requestAttributesHolder = new NamedThreadLocal("Request attributes");
//This is the place where you get the actual exception from the spring RequestContextHolder class.
public static RequestAttributes currentRequestAttributes() throws IllegalStateException {
RequestAttributes attributes = getRequestAttributes();
if (attributes == null) {
if (jsfPresent) {
attributes = RequestContextHolder.FacesRequestAttributesFactory.getFacesRequestAttributes();
}
if (attributes == null) {
throw new IllegalStateException("No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.");
}
}
return attributes;
}
public static RequestAttributes getRequestAttributes() {
RequestAttributes attributes = (RequestAttributes)requestAttributesHolder.get();
if (attributes == null) {
attributes = (RequestAttributes)inheritableRequestAttributesHolder.get();
}
return attributes;
}
final verdict:
so make sure you are not trying to access the ServletRequest from the RequestInterceptor if you are using parallel streams. since parallel streams must be used only with stateless, non-interfering, and associative operations
since requestAttributesHolder.get() looks for the current thread do not use parallel streams on it as shown below .which is not recommended and parallelism has a lot of things to be considered refer(link)
public T get() {
Thread t = Thread.currentThread();
ThreadLocalMap map = getMap(t);
if (map != null) {
ThreadLocalMap.Entry e = map.getEntry(this);
if (e != null) {
#SuppressWarnings("unchecked")
T result = (T)e.value;
return result;
}
}
return setInitialValue();
}
if you do not have any code that is accessing the current request and it's being called from the OpenFeign class files then the only way is to use the sequential streams instead of parallel streams.which is straightforward
accountIds.stream().forEach(accountId -> {
AccountDTO accountDTO = accountMaintenanceRestClient.getAccount(accountId);
// More logic
}
I have a service that reads a csv file and answers queries from that data using lucene. The service-module works perfectly stand alone and in the unit-tests. The service uses spring to create all lucene classes (directory, analyzer ...see below the ServiceConfig).
That services is used by a spring-rest web-application. When deploying the first time in tomcat or weblogic it works fine. BUT when I try to redeploy it, it cannot load the spring-context again with the following error:
2014-11-14 13:59:57,261 MyService#1.0-SNAPSHOT 750 ERROR org.springframework.web.context.ContextLoader - Context initialization failedorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'csvReader' defined in class de.camminati.config.ServiceConfig: Invocation of init method failed; nested exception is java.lang.LinkageError: loader constraint violation: when resolving method "java.lang.invoke.MethodHandle.invokeExact()Lorg/apache/lucene/util/AttributeImpl;" the class loader (instance of org/apache/catalina/loader/WebappClassLoader) of the current class, org/apache/lucene/util/AttributeFactory$1, and the class loader (instance of <bootloader>) for resolved class, java/lang/invoke/MethodHandle, have different Class objects for the type ; used in the signature
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1514)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:191)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:636)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:934)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:410)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:553)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1648)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:791)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1496)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:709)
at org.apache.catalina.manager.ManagerServlet.doPut(ManagerServlet.java:450)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:649)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:610)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at com.googlecode.psiprobe.Tomcat70AgentValve.invoke(Tomcat70AgentValve.java:38)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2441)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2430)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "java.lang.invoke.MethodHandle.invokeExact()Lorg/apache/lucene/util/AttributeImpl;" the class loader (instance of org/apache/catalina/loader/WebappClassLoader) of the current class, org/apache/lucene/util/AttributeFactory$1, and the class loader (instance of <bootloader>) for resolved class, java/lang/invoke/MethodHandle, have different Class objects for the type ; used in the signature
at org.apache.lucene.util.AttributeFactory$1.createInstance(AttributeFactory.java:140)
at org.apache.lucene.util.AttributeFactory$StaticImplementationAttributeFactory.createAttributeInstance(AttributeFactory.java:103)
at org.apache.lucene.util.AttributeSource.addAttribute(AttributeSource.java:222)
at org.apache.lucene.analysis.core.KeywordTokenizer.<init>(KeywordTokenizer.java:37)
at org.apache.lucene.analysis.core.KeywordTokenizer.<init>(KeywordTokenizer.java:41)
at org.apache.lucene.analysis.core.KeywordAnalyzer.createComponents(KeywordAnalyzer.java:34)
at org.apache.lucene.analysis.Analyzer.tokenStream(Analyzer.java:182)
at org.apache.lucene.document.Field.tokenStream(Field.java:554)
at org.apache.lucene.index.DefaultIndexingChain$PerField.invert(DefaultIndexingChain.java:611)
at org.apache.lucene.index.DefaultIndexingChain.processField(DefaultIndexingChain.java:359)
at org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:318)
at org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:239)
at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:454)
at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1511)
at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1246)
at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1231)
at de.camminati.csv.CSVReader.readData(CSVReader.java:54)
at de.camminati.csv.CSVReader.afterPropertiesSet(CSVReader.java:62)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1573)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1511)
... 57 more
So basically, it cannot reload because the objects are not being destroyed completely, because lucene does something fishy with the class loader (some Thread-operations I guess) and cannot be accessed again from the class loader that spring is using.
Here is my ServiceConfig.class:
#Configuration
#Slf4j
public class ServiceConfig {
#Bean
#Value("classpath:/data.csv")
public java.io.InputStream cvsInputStream(Resource vpknCSV) throws IOException {
return vpknCSV.getInputStream();
}
#Bean
public Analyzer analyzer() {
return new KeywordAnalyzer();
}
#Bean(name = "directory")
public Directory directory() throws IOException {
return new RAMDirectory();
}
#Bean
public IndexWriter indexWriter(Directory directory, Analyzer analyzer) throws IOException {
IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_4_10_2, analyzer);
config.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
return new IndexWriter(directory, config);
}
#Bean
#DependsOn("indexWriter")
public CSVReader csvReader() {
return new CSVReader();
}
#Bean
#DependsOn("csvReader")
public IndexSearcher indexSearcher(Directory directory) throws IOException {
return new IndexSearcher(DirectoryReader.open(directory));
}
}
And the CSVReader.java:
public class CSVReader implements InitializingBean, DisposableBean {
#Autowired
InputStream csvInputStream;
#Autowired
IndexWriter indexWriter;
private ApplicationContext appContext;
public void readData() throws IOException {
CSVParser csvParser = new CSVParser(new InputStreamReader(csvInputStream), CSVFormat.EXCEL.withDelimiter(';').withIgnoreEmptyLines(true));
for (CSVRecord record : csvParser.getRecords()) {
Document doc = new Document();
doc.add(...);
indexWriter.addDocument(doc);
}
indexWriter.close();
}
#Override
public void afterPropertiesSet() throws IOException {
readData();
}
#Override
public void destroy() throws Exception {
log.info("Closing from destroy().....");
csvInputStream.close();
log.info("Closing from destroy().....done!");
}
}
And the Service.class:
#Service
#Slf4j
public class Service {
#Autowired(required = true)
#Qualifier(("directory"))
Directory directory;
#Autowired
Analyzer analyzer;
#Autowired
IndexSearcher indexSearcher;
private final int MAX_HITS = 45000;
#Override
protected void finalize() throws IOException {
directory.close();
}
public boolean existsInIndex(String input, String index) throws ParseException, IOException {
QueryParser parser = new QueryParser(Version.LUCENE_4_10_2, index, analyzer);
Query query = parser.parse("\"" + parser.escape(input) + "\"");
ScoreDoc[] hits = indexSearcher.search(query, null, MAX_HITS).scoreDocs;
return (hits.length > 0) ? true : false;
}
}
Any ideas why it would run only exactly once? And any ideas how to fix it?
I have a #Repository as follows:
#Repository
public class OrderRepository {
#Autowired
SessionFactory sessionFactory;
public void update(Order order) {
sessionFactory.getCurrentSession().update(order);
}
}
Which is called by a #Service as follows:
#Transactional
#Service
public class OrderService {
#Autowired
OrderRepository orderRepository;
public void updateOrder(Order order) {
orderRepository.update(order);
}
}
There are some instances where the order being updated has been removed from the database (this is expected and is benign). When this occurs an exception is thrown:
SEVERE: Servlet.service() for servlet [DispatcherServlet] in context with path [/project] threw exception [Request processing failed; nested exception is org.springframework.orm.hibernate4.HibernateOptimisticLockingFailureException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1; nested exception is org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1] with root cause
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:81)
at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:73)
at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:63)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3281)
at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:3183)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3525)
at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:159)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:463)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:349)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1222)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:555)
at org.springframework.transaction.support.AbstractOrderTransactionManager.processCommit(AbstractOrderTransactionManager.java:757)
at org.springframework.transaction.support.AbstractOrderTransactionManager.commit(AbstractOrderTransactionManager.java:726)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:478)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:272)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:644)
at uk.co.domain.services.OrderService$$EnhancerBySpringCGLIB$$35a2d392.updateOrder(<generated>)
at uk.co.domain.controllers.OrderController.test(RequestController.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
I am trying to catch the HibernateOptimisticLockingFailureException within the repository:
#Repository
public class OrderRepository {
#Autowired
SessionFactory sessionFactory;
public void update(Order order) {
try {
sessionFactory.getCurrentSession().update(order);
} catch (HibernateOptimisticLockingFailureException e) {
System.out.println("Exception occurred");
}
}
}
Sadly it does not work and the user still sees the exception. I have also tried catching HibernateException and StaleStateException and neither of these work either.
I tried adding the same try/catch to the Service instead of the Repository, but this does not work. I would appreciate any pointers.
The actual update query is executed at flush time. Not when you're calling update() on the session. In this particular case, the flush happens just before the transaction wrapping the call to the service method is committed. BTW, that can be seen in the stack trace:
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:478)
So, if you want to catch the exception, you should catch it outside of the service:
try {
orderService.updateOrder(order);
}
catch (ConcurrencyFailureException e) {
...
}
Even if you explicitely flush() from inside the service or DAO method, catching the exception there is a bad idea, since it will leave the Hibernate session in an unreliable state. The transaction should be rollbacked and the session should be closed immediately. That's what happens automatically if you let the exception bubble, so you'd better catch it in the code which calls the service.
I'm making a Java web-application with an user profile.
I have a profileServlet which is responsible for rendering two pages: profile.jsp and editProfile.jsp
The first source, from which profileServlet is being called, is a menu link on top of the page, and look like this:
Profile
The second source is a "Edit" button in the profile.jsp:
<form name="editProfile" method="GET" action="profileServlet?param=editProf"><input type="submit" value="Edit"></form>
Now in profileServlet, depending on the param value I want to make redirect either to profile.jsp or editProfile.jsp. Here is the code:
if(request.getParameter("param").equals("profile")) {
response.sendRedirect("profile.jsp");
} else if (request.getParameter("param").equals("editProf")) {
response.sendRedirect("editProfile.jsp");
}
But I keep getting java.lang.NullPointerException.
Could you help please?
Stacktrace:
24.04.2014 11:44:30 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [profilePage.profileServlet] in context with path [/LinkedIn] threw exception
java.lang.NullPointerException
at profilePage.profileServlet.doGet(profileServlet.java:126)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Your request parameter param is probably null, you can either do it like below, or have proper null checking in place before using your variables
if ("profile".equals(request.getParameter("param")) {
response.sendRedirect("profile.jsp");
} else if ("editProf".equals(request.getParameter("param")) {
response.sendRedirect("editProfile.jsp");
}
Additionally, ensure that the code is place in their respective doGet/doPost handlers, or have one handler for both.
Example:
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) {
handleGetAndPost(request, response);
}
#Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) {
handleGetAndPost(request, response);
}
private void handleGetAndPost(HttpServletRequest request, HttpServletResponse response) {
if ("profile".equals(request.getParameter("param")) {
response.sendRedirect("profile.jsp");
} else if ("editProf".equals(request.getParameter("param")) {
response.sendRedirect("editProfile.jsp");
}
}
you should use a post request when submitting a form, and have two different handler methods.
GET returns the empty form, and POST processes the submitted form.
Better add null checks. Looks like you are not able to get param
if (request.getParameter("param") != null && request.getParameter("param").equals("profile")) {
response.sendRedirect("profile.jsp");
} else if (request.getParameter("param") != null && request.getParameter("param").equals("editProf")) {
response.sendRedirect("editProfile.jsp");
}