Webservice - erro em método retornando JSon

Boa noite.

Estou com um erro ao tentar testar um método de um web service que deveria retornar um Json, este é o metodo:

package br.com.telefonica.portalosti.webservice;

import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;

@Path("/pessoaResource")
public class PessoaResource {

@GET
@Path("/getAll")
@Produces("application/json")
public List<Pessoa> getAll() {
	List<Pessoa> p = new ArrayList<>();
	
	Pessoa pessoa1 = new Pessoa();
	pessoa1.setId(1);
	pessoa1.setNome("findAll-1");

	Pessoa pessoa2 = new Pessoa();
	pessoa2.setId(2);
	pessoa2.setNome("findAll-2");

	Pessoa pessoa3 = new Pessoa();
	pessoa3.setId(3);
	pessoa3.setNome("findAll-3");
	
	
	p.add(pessoa1);
	p.add(pessoa2);
	p.add(pessoa3);

	return p;
}

}

Classe Pessoa:

package br.com.telefonica.portalosti.webservice;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Pessoa {
private Integer id;

private String nome;




public Pessoa() {
	super();
	// TODO Auto-generated constructor stub
}

public Pessoa(Integer id, String nome) {
	super();
	this.id = id;
	this.nome = nome;
}


public Integer getId() {
	return id;
}

public void setId(Integer id) {
	this.id = id;
}

public String getNome() {
	return nome;
}

public void setNome(String nome) {
	this.nome = nome;
}

}

`Ao acessar o método pelo browser recebo o seguinte erro:

02:16:33,383 WARN [org.jboss.resteasy.core.ExceptionHandler] (default task-22) Unknown exception while executing GET /pessoaResource/getAll: java.lang.NullPointerException
at com.sun.jersey.server.impl.cdi.CDIExtension$PredefinedBean.create(CDIExtension.java:939) [jersey-servlet-1.19.jar:1.19]
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:69) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:733) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:789) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:92) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.util.Beans.injectBoundFields(Beans.java:358) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:369) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.producer.DefaultInjector.inject(DefaultInjector.java:72) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.producer.ResourceInjector.inject(ResourceInjector.java:60) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.producer.DefaultInjector$1.proceed(DefaultInjector.java:66) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:48) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.producer.DefaultInjector.inject(DefaultInjector.java:64) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.injection.producer.BasicInjectionTarget.inject(BasicInjectionTarget.java:90) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.resteasy.cdi.JaxrsInjectionTarget.inject(JaxrsInjectionTarget.java:48) [resteasy-cdi-3.0.8.Final.jar:]
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:150) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:96) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:98) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:78) [weld-core-impl-2.1.2.Final.jar:2014-01-09 09:23]
at org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider$Proxy$_$$_WeldClientProxy.isWriteable(Unknown Source) [jackson-jaxrs-1.9.2.jar:1.9.2]
at org.jboss.resteasy.spi.ResteasyProviderFactory.resolveMessageBodyWriter(ResteasyProviderFactory.java:2118) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.spi.ResteasyProviderFactory.getMessageBodyWriter(ResteasyProviderFactory.java:2096) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.ServerResponseWriter.writeNomapResponse(ServerResponseWriter.java:62) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.writeResponse(SynchronousDispatcher.java:427) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:376) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.8.Final.jar:]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.8.0_45]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_45]

02:16:33,399 ERROR [io.undertow.request] (default task-22) UT005023: Exception handling request to /PortalOSTI/services/pessoaResource/getAll: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:247) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.writeResponse(SynchronousDispatcher.java:432) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:376) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.8.Final.jar:]
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.8.Final.jar:]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.15.Final.jar:1.0.15.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [rt.jar:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.8.0_45]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_45]

Se eu troco a saida para XML (trocando para @Produces(“text/xml”) funciona normalmente…

Alguém tem alguma idéia do problema ?

Obrigado.