Hello,
I'm just beginning development with Seam.
I'm trying to build a CRUD application based on the booking sample.
I've a JSF page showing a list backed by an ActionList bean.
When I use session scope for this bean, the page renders fine.
When I use page scope for this bean, seam exception page shows with the
following stack Trace.
Has anyone experienced this error ?
java.io.NotSerializableException: java.lang.ThreadLocal
javax.faces.FacesException: java.io.NotSerializableException:
java.lang.ThreadLocal
at
org.apache.myfaces.shared_impl.util.StateUtils.getAsByteArray(StateUtils.java:190)
at
org.apache.myfaces.shared_impl.util.StateUtils.construct(StateUtils.java:150)
at
org.apache.myfaces.renderkit.html.HtmlResponseStateManager.writeState(HtmlResponseStateManager.java:102)
at
org.apache.myfaces.application.jsp.JspStateManagerImpl.writeState(JspStateManagerImpl.java:430)
at
org.ajax4jsf.framework.ajax.AjaxStateManager.writeState(AjaxStateManager.java:91)
at
org.jboss.seam.jsf.SeamStateManager.writeState(SeamStateManager.java:66)
at
org.ajax4jsf.framework.ajax.AjaxStateManager.writeState(AjaxStateManager.java:91)
at
com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:599)
at
org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:101)
at
org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:222)
at
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:907)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at
org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at
org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:75)
at
org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:213)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:701)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:646)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
at
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
at
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:92)
at
com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
at
com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1433)
at
com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:93)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:394)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:274)
at
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:152)
at
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:213)
at
com.ibm.io.async.AbstractAsyncFuture.fireCompletionActions(AbstractAsyncFuture.java:195)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:194)
at
com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:741)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:863)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1510)
Caused by: java.io.NotSerializableException: java.lang.ThreadLocal
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1108)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1462)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1434)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1377)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1106)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:324)
at java.util.ArrayList.writeObject(ArrayList.java:595)
at sun.reflect.GeneratedMethodAccessor3547.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:972)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1426)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1377)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1106)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1462)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1434)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1377)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1106)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:324)
at java.util.HashMap.writeObject(HashMap.java:1040)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:972)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1426)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1377)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1106)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1338)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1102)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1338)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1102)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1338)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1102)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1338)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1102)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:324)
at
org.apache.myfaces.shared_impl.util.StateUtils.getAsByteArray(StateUtils.java:180)
... 46 more
Here is the bean code :
package org.pag.seam.example.employe;
|
| import java.io.Serializable;
| import java.util.List;
|
| import org.hibernate.Session;
| import org.jboss.seam.ScopeType;
| import org.jboss.seam.annotations.Factory;
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Logger;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.Out;
| import org.jboss.seam.annotations.Scope;
| import org.jboss.seam.annotations.datamodel.DataModel;
| import org.jboss.seam.annotations.datamodel.DataModelSelection;
| import org.jboss.seam.example.hibernate.Hotel;
| import org.jboss.seam.log.Log;
|
|
| @Name("employeListAction")
| @Scope(ScopeType.PAGE)
| public class EmployeListAction implements Serializable {
| private static final long serialVersionUID = -7659479980987467214L;
|
| @DataModel
| private transient List<Employe> employeList;
|
| @In
| private transient Session bookingDatabase;
| private int pageSize = 10;
| private int page = 0;
| private boolean nextPageAvailable = false;
|
| @Logger
| private transient Log log;
| private String searchString = null;
|
| public EmployeListAction () {
| System.out.println("EmployeManagerAction.new() : "+this);
| }
|
| public String getSearchString() {
| return searchString;
| }
|
| public void setSearchString(String aSearchString) {
| searchString = aSearchString;
| }
|
| public void find () {
| page = 0;
| queryEmployes ();
| }
|
| public int getPage() {
| return page;
| }
|
| public void setPage(int page) {
| this.page = page;
| }
|
| private void queryEmployes() {
|
| log.info ("queryEmploye - employeManager=#{employeManager},
employes=#{employes}, page=#{employeListAction.page}");
| String findPattern = searchString==null ? "%" : '%' +
searchString.toLowerCase().replace('*', '%') + '%';
| employeList = (List<Employe>)
bookingDatabase.createQuery("select e from Employe e where lower(e.name) like
:find")
| .setParameter("find", findPattern)
| .setMaxResults(pageSize)
| .setFirstResult( page * pageSize )
| .list();
| }
|
| public void nextPage()
| {
| page++;
| queryEmployes();
| }
|
| public boolean isNextPageAvailable()
| {
| return employeList!=null && employeList.size()==pageSize;
| }
|
| public void previousPage()
| {
| page--;
| queryEmployes();
| }
|
| public boolean isPreviousPageAvailable()
| {
| return page>0;
| }
|
| public int getPageSize() {
| return pageSize;
| }
|
| public void setPageSize(int aPageSize) {
| pageSize = aPageSize;
| }
| }
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