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JaxbRepresentation gives error "doesnt contain ObjectFactory.class or jaxb.index"

Tags:

java

rest

jaxb

jakarta-ee

restlet-2.0

I am trying to create a sample test application which converts an object to JaxbRepresentation. But when I try to run this, it gives me an error.

Main.java file

package test_jaxb;

import org.restlet.Server;
import org.restlet.data.Protocol;

public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
      Server helloServer = new Server(Protocol.HTTP, 8111,
      TestResource.class);
      helloServer.start();
    }

}

TestResource.java file

package test_jaxb;

import org.restlet.ext.jaxb.JaxbRepresentation;
import org.restlet.representation.Representation;
import org.restlet.resource.ResourceException;
import org.restlet.resource.ServerResource;

public class TestResource extends ServerResource{

   @Override
   protected Representation get() throws ResourceException {
      SampleResponse res = new SampleResponse();
      res.setMsg("Success");
      res.setStatusCode(0);
      JaxbRepresentation<SampleResponse> representation = new JaxbRepresentation<SampleResponse>(res);
      return representation;
   }
}

SampleResponse.java file

package test_jaxb;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name="Response")
public class SampleResponse {
   private int statusCode;
   private String msg;

   @XmlElement(name="Msg")
   public String getMsg() {
      return msg;
   }

   public void setMsg(String msg) {
      this.msg = msg;
   }

   @XmlElement(name="StatusCode")
   public int getStatusCode() {
      return statusCode;
   }

   public void setStatusCode(int statusCode) {
      this.statusCode = statusCode;
   }
}

When I run this on the server, it throws the following error:

WARNING: Problem creating Marshaller
javax.xml.bind.JAXBException: "test_jaxb" doesnt contain ObjectFactory.class or jaxb.index
    at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:119)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:132)
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:299)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
    at org.restlet.ext.jaxb.JaxbRepresentation.getContext(JaxbRepresentation.java:83)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:68)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:64)
    at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:141)
    at java.lang.ThreadLocal.get(ThreadLocal.java:131)
    at org.restlet.ext.jaxb.internal.Marshaller.getMarshaller(Marshaller.java:163)
    at org.restlet.ext.jaxb.internal.Marshaller.marshal(Marshaller.java:216)
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:527)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.internal.Marshaller getMarshaller
WARNING: Unable to locate marshaller.
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.JaxbRepresentation write
WARNING: JAXB marshalling error caught.
javax.xml.bind.JAXBException: Unable to locate marshaller.
    at org.restlet.ext.jaxb.internal.Marshaller.getMarshaller(Marshaller.java:166)
    at org.restlet.ext.jaxb.internal.Marshaller.marshal(Marshaller.java:216)
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:527)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.internal.Marshaller$1 initialValue
WARNING: Problem creating Marshaller
javax.xml.bind.JAXBException: "failure" doesnt contain ObjectFactory.class or jaxb.index
    at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:119)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:132)
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:299)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
    at org.restlet.ext.jaxb.JaxbRepresentation.getContext(JaxbRepresentation.java:83)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:68)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:64)
    at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:141)
    at java.lang.ThreadLocal.get(ThreadLocal.java:131)
    at org.restlet.ext.jaxb.internal.Marshaller.getMarshaller(Marshaller.java:163)
    at org.restlet.ext.jaxb.internal.Marshaller.marshal(Marshaller.java:216)
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:535)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.internal.Marshaller getMarshaller
WARNING: Unable to locate marshaller.
May 16, 2011 7:05:12 AM org.restlet.engine.http.connector.Connection writeMessage
WARNING: Exception while writing the message body.
java.io.IOException: Unable to locate marshaller.
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:539)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.engine.http.connector.ServerConnection writeMessage
INFO: An exception occured while writing the response
java.io.IOException: Unable to locate marshaller.
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:539)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)

Please someone help!!!

like image 494
user619237 Avatar asked May 16 '11 12:05

user619237

People also ask

What is the use of ObjectFactory in JAXB?

jaxb package. An ObjectFactory allows you to programatically construct new instances of the Java representation for XML content. The Java representation of XML content can consist of schema derived interfaces and classes representing the binding of schema type definitions, element declarations and model groups.

What is JAXBContext newInstance?

JAXBContext.newInstance( "com.acme.foo:com.acme.bar" ) The JAXBContext instance is initialized from a list of colon separated Java package names. Each java package contains JAXB mapped classes, schema-derived classes and/or user annotated classes.

3 Answers

In my case I was able to resolve this by adding a file called "jaxb.index" in the same package folder as the JAXB annotated class. In that file list the simple, non-qualified names of the annotated classes.

For example, my file /MyProject/src/main/java/com/example/services/types/jaxb.index is simply one line (since I have only one JAXB typed class):

ServerDiagContent

which refers to the class com.example.services.types.ServerDiagContent

like image 64
itzg Avatar answered Oct 05 '22 23:10

itzg

To get rid of additional jaxb.index files you may use Java class to instantiate the context:

http://docs.oracle.com/javase/6/docs/api/javax/xml/bind/JAXBContext.html#newInstance(java.lang.Class...)

Usually you need to pass in only single java class because other classes are "statically reachable from these class(es)" so JAXB is able to identify them.

like image 44
Jukka Avatar answered Oct 05 '22 23:10

Jukka

I was using Spring and I just had to change 

Jaxb2Marshaller mlr = new Jaxb2Marshaller();
mlr.setContextPaths("","");

to

Jaxb2Marshaller mlr = new Jaxb2Marshaller();
mlr.setPackagesToScan("","");

Ref1 & Ref2

like image 16
Anand Rockzz Avatar answered Oct 06 '22 00:10

Anand Rockzz
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