5 Replies Latest reply on Jan 28, 2013 10:55 PM by profinator

org.jboss.serial.exception.SerializationException: Object reference 3 was not found when trying to access entities List

ziombka May 25, 2012 5:15 AM

Hello.

I have a problem when i am trying to access antities list in my http servlet.

There is Entity:

package Entities;


import java.io.Serializable;
import javax.persistence.*;
import java.util.Set;




/**
 * The persistent class for the CATEGORIES database table.
 * 
 */
@Entity
@Table(name="CATEGORIES")
public class Category implements Serializable {
          private static final long serialVersionUID = 1L;


          @Id
          @GeneratedValue(strategy=GenerationType.IDENTITY)
          @Column(name="cat_id")
          private int catId;


          @Column(name="cat_name")
          private String catName;


          //bi-directional many-to-one association to Auction
          @OneToMany(mappedBy="category")
          private Set<Auction> auctions;


    public Category() {
    }


          public int getCatId() {
                    return this.catId;
          }


          public void setCatId(int catId) {
                    this.catId = catId;
          }


          public String getCatName() {
                    return this.catName;
          }


          public void setCatName(String catName) {
                    this.catName = catName;
          }


          public Set<Auction> getAuctions() {
                    return this.auctions;
          }


          public void setAuctions(Set<Auction> auctions) {
                    this.auctions = auctions;
          }
  
}

There is code in EJB Bean:

    public List<Category> getItemCategories() {
    
              try {
                        Query q = em.createQuery("select c from Category c");
                        List<Category> resultList = q.getResultList();
                        return resultList;
              }
              catch (IllegalStateException e) {
                        System.out.println("BLAD: " + e.getMessage());
              }
              //Category a = resultList.get(0);
              //System.out.println("Sprawdzenie pobrania: " + a.getCatName());
                    return null;
    }

End there i am trying to get this list by InitialContext:







InitialContext ctx2 = new InitialContext();






GuestRemote gg = (GuestRemote) ctx2.lookup("Calosc/GuestBean/remote");






List<Category> resultList = gg.getItemCategories(); // THere is a problem

Error occurs on third line. I think there is some serialization issue.

10:58:46,722 ERROR [STDERR] java.lang.reflect.UndeclaredThrowableException
10:58:46,722 ERROR [STDERR]           at $Proxy71.getItemCategories(Unknown Source)
10:58:46,722 ERROR [STDERR]           at www.UserHttp.getItemCategories(UserHttp.java:15)
10:58:46,722 ERROR [STDERR]           at org.apache.jsp.index_jsp._jspService(index_jsp.java:98)
10:58:46,722 ERROR [STDERR]           at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
10:58:46,722 ERROR [STDERR]           at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
10:58:46,722 ERROR [STDERR]           at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
10:58:46,722 ERROR [STDERR]           at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
10:58:46,722 ERROR [STDERR]           at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
10:58:46,723 ERROR [STDERR]           at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
10:58:46,723 ERROR [STDERR]           at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
10:58:46,723 ERROR [STDERR]           at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
10:58:46,723 ERROR [STDERR]           at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
10:58:46,723 ERROR [STDERR]           at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
10:58:46,723 ERROR [STDERR]           at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
10:58:46,723 ERROR [STDERR]           at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
10:58:46,723 ERROR [STDERR]           at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
10:58:46,724 ERROR [STDERR]           at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
10:58:46,724 ERROR [STDERR]           at java.lang.Thread.run(Thread.java:679)
10:58:46,724 ERROR [STDERR] Caused by: org.jboss.serial.exception.SerializationException: Object reference 3 was not found
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:118)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:845)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:412)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:82)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:845)
10:58:46,724 ERROR [STDERR]           at org.jboss.serial.io.MarshalledObjectForLocalCalls.get(MarshalledObjectForLocalCalls.java:60)
10:58:46,725 ERROR [STDERR]           at org.jboss.ejb3.remoting.IsLocalInterceptor.invokeLocal(IsLocalInterceptor.java:96)
10:58:46,725 ERROR [STDERR]           at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:72)
10:58:46,725 ERROR [STDERR]           at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
10:58:46,725 ERROR [STDERR]           at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:107)
10:58:46,725 ERROR [STDERR]           ... 27 more

1. Re: org.jboss.serial.exception.SerializationException: Object reference 3 was not found when trying to access entities List

scattie Jun 15, 2012 6:05 AM (in response to ziombka)

We have the exact same issue.
Any ideas would be welcome...
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2. Re: org.jboss.serial.exception.SerializationException: Object reference 3 was not found when trying to access entities List

ziombka Jun 15, 2012 6:08 AM (in response to scattie)

I had this problem when i used EclipseLink for JPA.
I changed jpa to hybernate and problem disappered.
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3. Re: org.jboss.serial.exception.SerializationException: Object reference 3 was not found when trying to access entities List

scattie Jun 22, 2012 5:54 AM (in response to ziombka)

Well, we are using Hibernate...

Some more information:
- JBoss EAP 5.1 application server
- Runs on RHEL 6

The problem occurred after we updated our Java version from java-1.6.0-openjdk-1.6.0.0-1.43.1.10.6.el6_2.x86_64.rpm to java-1.6.0-openjdk-1.6.0.0-1.48.1.11.3.el6_2.x86_64.rpm.
After rolling back this update, the problem no longer occurs.

Are there any changes in this update that might cause this, and more importantly, how can we work around it?
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4. Re: org.jboss.serial.exception.SerializationException: Object reference 3 was not found when trying to access entities List

gustavoz77 Oct 1, 2012 12:16 AM (in response to ziombka)

Hi!, i have this same problem in a similar aplication, the problem is that my Jboss version 6 can't to serialize an Vector that have instances of other object, all my classes are implements serializable by Java.io....but i have cheked thaT the problem is to try to

serialize a vector like this

public Vector <Customers> getCustomers() {
return customers;
}

if someone know how i can to fix this error please, tell me

THANKS YOU!!!

P.D. i am working with jdk and jre version 7, JBoss 6 and standard Java EJB 3.0
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5. Re: org.jboss.serial.exception.SerializationException: Object reference 3 was not found when trying to access entities List

profinator Jan 28, 2013 10:55 PM (in response to gustavoz77)

Hi all,

We have this same problem as well. We've been developing a code base for the last two years running on OracleJDK. Late last year we migrated to the OpenJDK version that comes standard with RedHat 6.3 (OpenJDK-1.6.0.0-1.45.1). Upon migrating we immediately started getting this problem for only SOME of the page loads in our application.

Upon reading the post from Stijn Cattie above I tried installing OpenJDK-1.6.0.0-1.43.1 and found that the SerializationException went away. I've also tried installing the latest version of OpenJDK (1.6.0.0-1.50.1) and the problem still exists.

Has anyone come across this problem before or have any information that can help us fix it?

Thanks,
Josh.
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