title: JSF / Hibernate / Rest, Why Nullpointer ?
body: <p>I try to make an rest service based on JSF and hibernate. The Database is specified in the Jboss standalone.xml.
  But the Url that should give me an MediaType.APPLICATION_JSON gives me a Nullpointer instead. 
  <strong>de.bht.server/rest/resource/json</strong></p>
  
  <pre><code>package de.bht.server.jax;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.inject.Inject;
  import javax.ws.rs.GET;
  import javax.ws.rs.Path;
  import javax.ws.rs.Produces;
  import javax.ws.rs.core.MediaType;
  
  import com.database.Service;
  import com.database.SurveyQuestion;
  
      @Path("/resource")
      public class Resource {
  
          @Inject
          private Service service;
  
          // This method is called if Json request
          @GET
          @Path("/json")
          @Produces(MediaType.APPLICATION_JSON)
          public List&lt;SurveyQuestion&gt; getJson() {
              System.out.println("Resource: " + service);
              return service.getAllQuestions();
          }
  
          @GET
          @Path("/test")
          @Produces(MediaType.APPLICATION_JSON)
          public List&lt;SurveyQuestion&gt; getTestJson() {
  
              ArrayList&lt;SurveyQuestion&gt; list = new ArrayList&lt;SurveyQuestion&gt;();
              SurveyQuestion sq = new SurveyQuestion();
  
              sq.setFreetext(true);
              sq.setId(5l);
              sq.setIdx(6);
              sq.setMandatory(true);
              sq.setMultiplechoice(true);
              sq.setSheet_id(7l);
              sq.setTitle("What's app?");
  
              for (int i = 0; i &lt; 3; ++i)
                  list.add(sq);
  
              return list;
          }
      }
  </code></pre>
  
  <p>My RestApplication</p>
  
  <pre><code>package de.bht.server.jax;
  
  import javax.ws.rs.ApplicationPath;
  import javax.ws.rs.core.Application;
  
  @ApplicationPath("/rest")
  public class RestApplication extends Application {
  
  }
  </code></pre>
  
  <p>My Inject service</p>
  
  <pre><code>package com.database;
  
  import java.util.List;
  
  import javax.ejb.Stateless;
  import javax.persistence.EntityManager;
  import javax.persistence.PersistenceContext;
  import javax.persistence.Query;
  
  @Stateless
  public class Service {
  
      @PersistenceContext
      private EntityManager em;
  
      public List&lt;SurveyQuestion&gt; getAllQuestions() {
          System.out.println("Service: " + em);
          final Query query = this.em.createNamedQuery("getWholeTable");
  
          System.out.println("ServicePrint: " + query);
  
          return query.getResultList();
      }
  
  }
  </code></pre>
  
  <p>And the Pojo I try to map</p>
  
  <pre><code>package com.database;
  
  import java.io.Serializable;
  
  import javax.persistence.Column;
  import javax.persistence.Entity;
  import javax.persistence.GeneratedValue;
  import javax.persistence.Id;
  import javax.persistence.NamedQuery;
  import javax.persistence.Table;
  import javax.xml.bind.annotation.XmlRootElement;
  
  @XmlRootElement
  @Entity
  @NamedQuery(name = "getWholeTable", query = "select t from SurveyQuestion t")
  @Table(name = "survey_question", schema = "tnt_test")
  public class SurveyQuestion implements Serializable {
  
      /**
       * 
       */
      private static final long serialVersionUID = 4571690522451469184L;
  
      @Id
      @GeneratedValue
      @Column(name = "id")
      private Long id;
  
      @Column(name = "freetext")
      private boolean freetext;
  
      @Column(name = "idx")
      private Integer idx;
  
      @Column(name = "mandatory")
      private boolean mandatory;
  
      @Column(name = "multiplechoice")
      private boolean multiplechoice;
  
      @Column(name = "title")
      private String title;
  
      @Column(name = "sheet_id")
      private Long sheet_id;
  
      public SurveyQuestion() {
  
      }
  
      public boolean getFreetext() {
          return freetext;
      }
  
      public void setFreetext(boolean freetext) {
          this.freetext = freetext;
      }
  
      public Integer getIdx() {
          return idx;
      }
  
      public void setIdx(Integer idx) {
          this.idx = idx;
      }
  
      public boolean getMandatory() {
          return mandatory;
      }
  
      public void setMandatory(boolean mandatory) {
          this.mandatory = mandatory;
      }
  
      public boolean getMultiplechoice() {
          return multiplechoice;
      }
  
      public void setMultiplechoice(boolean multiplechoice) {
          this.multiplechoice = multiplechoice;
      }
  
      public String getTitle() {
          return title;
      }
  
      public void setTitle(String title) {
          this.title = title;
      }
  
      public Long getSheet_id() {
          return sheet_id;
      }
  
      public void setSheet_id(Long sheet_id) {
          this.sheet_id = sheet_id;
      }
  
      public Long getId() {
          return id;
      }
  
      public void setId(Long id) {
          this.id = id;
      }
  
      @Override
      public String toString() {
          return "SurveyQuestion ,id=" + id + ", freetext=" + freetext + ", idx="
                  + idx + ", mandatory=" + mandatory + ", multiplechoice="
                  + multiplechoice + ", title=" + title + ", sheet_id="
                  + sheet_id;
      }
  
  }
  </code></pre>
  
  <p>My Stacktrace</p>
  
  <pre><code>2013-12-25 13:12:53,075 INFO  [org.jboss.modules]  JBoss Modules version 1.1.3.GA
  2013-12-25 13:12:53,310 INFO  [org.jboss.msc]  JBoss MSC version 1.0.2.GA
  2013-12-25 13:12:53,388 INFO  [org.jboss.as]  JBAS015899: JBoss AS 7.2.0.Alpha1-SNAPSHOT "Steropes" starting
  2013-12-25 13:12:54,496 INFO  [org.jboss.as.server.deployment.scanner]  JBAS015003: Found de.bht.server.war in deployment directory. To trigger deployment create a file called de.bht.server.war.dodeploy
  2013-12-25 13:12:54,528 INFO  [org.xnio]  XNIO Version 3.0.6.GA
  2013-12-25 13:12:54,528 INFO  [org.jboss.as.server]  JBAS015888: Creating http management service using socket-binding (management-http)
  2013-12-25 13:12:54,528 INFO  [org.xnio.nio]  XNIO NIO Implementation Version 3.0.6.GA
  2013-12-25 13:12:54,544 INFO  [org.jboss.remoting]  JBoss Remoting version 3.2.8.SP1
  2013-12-25 13:12:54,590 INFO  [org.jboss.as.configadmin]  JBAS016200: Activating ConfigAdmin Subsystem
  2013-12-25 13:12:54,606 INFO  [org.jboss.as.osgi]  JBAS011906: Activating OSGi Subsystem
  2013-12-25 13:12:54,606 INFO  [org.jboss.as.naming]  JBAS011800: Activating Naming Subsystem
  2013-12-25 13:12:54,622 INFO  [org.jboss.as.security]  JBAS013171: Activating Security Subsystem
  2013-12-25 13:12:54,668 INFO  [org.jboss.as.security]  JBAS013170: Current PicketBox version=4.0.13.Final
  2013-12-25 13:12:54,746 INFO  [org.jboss.as.webservices]  JBAS015537: Activating WebServices Extension
  2013-12-25 13:12:54,746 INFO  [org.jboss.as.connector.logging]  JBAS010408: Starting JCA Subsystem (JBoss IronJacamar 1.0.12.Final)
  2013-12-25 13:12:54,793 INFO  [org.jboss.as.naming]  JBAS011802: Starting Naming Service
  2013-12-25 13:12:54,809 INFO  [org.jboss.as.mail.extension]  JBAS015400: Bound mail session [java:jboss/mail/Default]
  2013-12-25 13:12:54,980 INFO  [org.jboss.as.connector.subsystems.datasources]  JBAS010404: Deploying non-JDBC-compliant driver class org.postgresql.Driver (version 9.2)
  2013-12-25 13:12:55,043 INFO  [org.jboss.ws.common.management.AbstractServerConfig]  JBoss Web Services - Stack CXF Server 4.1.0.Beta2
  2013-12-25 13:12:55,074 INFO  [org.jboss.as.connector.subsystems.datasources]  JBAS010403: Deploying JDBC-compliant driver class org.h2.Driver (version 1.3)
  2013-12-25 13:12:55,526 INFO  [org.jboss.as.server.deployment.scanner]  JBAS015012: Started FileSystemDeploymentService for directory C:\Development\jboss_as\standalone\deployments
  2013-12-25 13:12:55,526 INFO  [org.jboss.as.server.deployment]  JBAS015876: Starting deployment of "de.bht.server.war"
  2013-12-25 13:12:55,950 INFO  [org.jboss.as.remoting]  JBAS017100: Listening on 127.0.0.1:10004
  2013-12-25 13:12:55,950 INFO  [org.jboss.as.remoting]  JBAS017100: Listening on 127.0.0.1:4452
  2013-12-25 13:12:55,950 INFO  [org.apache.coyote.http11.Http11Protocol]  Starting Coyote HTTP/1.1 on http-localhost/127.0.0.1:8085
  2013-12-25 13:12:56,090 INFO  [org.jboss.as.connector.subsystems.datasources]  JBAS010400: Bound data source [java:jboss/datasources/WebappFrameworkDS]
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleConstructor$HandleAllArgsConstructor' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleConstructor$HandleNoArgsConstructor' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleConstructor$HandleRequiredArgsConstructor' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleLog$HandleCommonsLog' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleLog$HandleJulLog' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleLog$HandleLog4j2Log' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleLog$HandleLog4jLog' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleLog$HandleSlf4jLog' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.javac.handlers.HandleLog$HandleXSlf4jLog' for service type 'lombok.javac.JavacAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.core.Main$LicenseApp' for service type 'lombok.core.LombokApp'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.core.Main$VersionApp' for service type 'lombok.core.LombokApp'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.installer.Installer$CommandLineInstallerApp' for service type 'lombok.core.LombokApp'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.installer.Installer$CommandLineUninstallerApp' for service type 'lombok.core.LombokApp'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.installer.Installer$GraphicalInstallerApp' for service type 'lombok.core.LombokApp'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleConstructor$HandleAllArgsConstructor' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleConstructor$HandleNoArgsConstructor' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleConstructor$HandleRequiredArgsConstructor' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleLog$HandleCommonsLog' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleLog$HandleJulLog' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleLog$HandleLog4j2Log' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,665 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleLog$HandleLog4jLog' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,681 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleLog$HandleSlf4jLog' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,681 WARN  [org.jboss.as.server.deployment]  JBAS015893: Encountered invalid class name 'lombok.eclipse.handlers.HandleLog$HandleXSlf4jLog' for service type 'lombok.eclipse.EclipseAnnotationHandler'
  2013-12-25 13:12:58,962 INFO  [org.jboss.as.jpa]  JBAS011401: Read persistence.xml for database
  2013-12-25 13:12:59,368 INFO  [org.jboss.weld.deployer]  JBAS016002: Processing weld deployment de.bht.server.war
  2013-12-25 13:12:59,992 INFO  [org.jboss.weld.deployer]  JBAS016005: Starting Services for CDI deployment: de.bht.server.war
  2013-12-25 13:13:00,102 INFO  [org.jboss.weld.Version]  WELD-000900 1.1.16 (Final)
  2013-12-25 13:13:00,165 INFO  [org.jboss.as.jpa]  JBAS011402: Starting Persistence Unit Service 'de.bht.server.war#database'
  2013-12-25 13:13:00,321 INFO  [org.hibernate.annotations.common.Version]  HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
  2013-12-25 13:13:00,321 INFO  [org.hibernate.Version]  HHH000412: Hibernate Core {4.1.6.Final}
  2013-12-25 13:13:00,336 INFO  [org.hibernate.cfg.Environment]  HHH000206: hibernate.properties not found
  2013-12-25 13:13:00,336 INFO  [org.hibernate.cfg.Environment]  HHH000021: Bytecode provider name : javassist
  2013-12-25 13:13:00,352 INFO  [org.hibernate.ejb.Ejb3Configuration]  HHH000204: Processing PersistenceUnitInfo [
      name: database
      ...]
  2013-12-25 13:13:00,586 INFO  [org.hibernate.service.jdbc.connections.internal.ConnectionProviderInitiator]  HHH000130: Instantiating explicit connection provider: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider
  2013-12-25 13:13:01,273 INFO  [org.hibernate.dialect.Dialect]  HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
  2013-12-25 13:13:01,273 INFO  [org.hibernate.engine.jdbc.internal.LobCreatorBuilder]  HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
  2013-12-25 13:13:01,289 INFO  [org.hibernate.engine.transaction.internal.TransactionFactoryInitiator]  HHH000268: Transaction strategy: org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory
  2013-12-25 13:13:01,289 INFO  [org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory]  HHH000397: Using ASTQueryTranslatorFactory
  2013-12-25 13:13:01,321 INFO  [org.hibernate.cache.spi.UpdateTimestampsCache]  HHH000250: Starting update timestamps cache at region: de.bht.server.war#database.org.hibernate.cache.spi.UpdateTimestampsCache
  2013-12-25 13:13:01,321 INFO  [org.infinispan.factories.GlobalComponentRegistry]  ISPN000128: Infinispan version: Infinispan 'Brahma' 5.1.7.Final
  2013-12-25 13:13:01,461 INFO  [org.infinispan.jmx.CacheJmxRegistration]  ISPN000031: MBeans were successfully registered to the platform mbean server.
  2013-12-25 13:13:01,477 INFO  [org.hibernate.cache.internal.StandardQueryCache]  HHH000248: Starting query cache at region: de.bht.server.war#database.org.hibernate.cache.internal.StandardQueryCache
  2013-12-25 13:13:01,477 INFO  [org.infinispan.jmx.CacheJmxRegistration]  ISPN000031: MBeans were successfully registered to the platform mbean server.
  2013-12-25 13:13:01,493 INFO  [org.hibernate.validator.util.Version]  Hibernate Validator 4.2.0.Final
  2013-12-25 13:13:01,728 INFO  [org.infinispan.jmx.CacheJmxRegistration]  ISPN000031: MBeans were successfully registered to the platform mbean server.
  2013-12-25 13:13:01,868 INFO  [org.hibernate.tool.hbm2ddl.SchemaValidator]  HHH000229: Running schema validator
  2013-12-25 13:13:01,868 INFO  [org.hibernate.tool.hbm2ddl.SchemaValidator]  HHH000102: Fetching database metadata
  2013-12-25 13:13:01,899 INFO  [org.hibernate.tool.hbm2ddl.TableMetadata]  HHH000261: Table found: tnt_test.survey_question
  2013-12-25 13:13:01,899 INFO  [org.hibernate.tool.hbm2ddl.TableMetadata]  HHH000037: Columns: [id, title, multiplechoice, idx, mandatory, sheet_id, freetext]
  2013-12-25 13:13:02,040 INFO  [org.jboss.weld.deployer]  JBAS016008: Starting weld service for deployment de.bht.server.war
  2013-12-25 13:13:02,274 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.config.ConfigurationExtension activated=true
  2013-12-25 13:13:02,274 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.exception.control.extension.ExceptionControlExtension activated=true
  2013-12-25 13:13:02,274 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.security.impl.extension.SecurityExtension activated=true
  2013-12-25 13:13:02,289 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.message.MessageBundleExtension activated=true
  2013-12-25 13:13:02,289 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.exclude.extension.ExcludeExtension activated=true
  2013-12-25 13:13:02,289 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.exclude.CustomProjectStageBeanFilter activated=true
  2013-12-25 13:13:02,289 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.exclude.GlobalAlternative activated=true
  2013-12-25 13:13:02,289 INFO  [org.apache.deltaspike.core.util.ClassDeactivationUtils]  class: org.apache.deltaspike.core.impl.jmx.MBeanExtension activated=true
  2013-12-25 13:13:02,368 INFO  [org.apache.deltaspike.core.util.ProjectStageProducer]  Computed the following DeltaSpike ProjectStage: Production
  2013-12-25 13:13:03,554 INFO  [org.jboss.web]  JBAS018210: Register web context: /de.bht.server
  2013-12-25 13:13:03,726 INFO  [javax.enterprise.resource.webcontainer.jsf.config]  Mojarra 2.1.13-jbossorg-1 20120919-1641 für Kontext '/de.bht.server' wird initialisiert.
  2013-12-25 13:13:07,127 INFO  [org.primefaces.webapp.PostConstructApplicationEventListener]  Running on PrimeFaces 4.0
  2013-12-25 13:13:08,002 INFO  [org.jboss.as.server]  JBAS018559: Deployed "de.bht.server.war"
  2013-12-25 13:13:08,205 INFO  [org.jboss.as]  JBAS015961: Http management interface listening on http://127.0.0.1:9995/management
  2013-12-25 13:13:08,205 INFO  [org.jboss.as]  JBAS015951: Admin console listening on http://127.0.0.1:9995
  2013-12-25 13:13:08,205 INFO  [org.jboss.as]  JBAS015874: JBoss AS 7.2.0.Alpha1-SNAPSHOT "Steropes" started in 15582ms - Started 204 of 288 services (83 services are passive or on-demand)
  2013-12-25 13:13:15,567 INFO  [org.jboss.resteasy.cdi.CdiInjectorFactory]  Found BeanManager at java:comp/BeanManager
  2013-12-25 13:13:15,567 INFO  [org.jboss.resteasy.spi.ResteasyDeployment]  Deploying javax.ws.rs.core.Application: class de.bht.server.jax.RestApplication
  2013-12-25 13:13:15,693 INFO  [stdout]  Resource: null
  
  2013-12-25 13:13:15,709 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/de.bht.server].[de.bht.server.jax.RestApplication]]  Servlet.service() for servlet de.bht.server.jax.RestApplication threw exception: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
      at org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:340)
      at org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:214)
      at org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:190)
      at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:540)
      at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:502)
      at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:119)
      at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
      at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
      at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
      at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
      at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:206)
      at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:179)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
      at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)
      at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)
      at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:165)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:372)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
      at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679)
      at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931)
      at java.lang.Thread.run(Thread.java:722)
  Caused by: java.lang.NullPointerException
      at de.bht.server.jax.Resource.getJson(Resource.java:27)
      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.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:167)
      at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:257)
      at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:222)
      at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:211)
      at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:525)
      ... 28 more
  </code></pre>
  
  <p>It seems like </p>
  
  <pre><code> @Inject
   private Service service;
  </code></pre>
  
  <p>in Resources has some problems, but why is that ? 
  I'm thankful for any hints.</p>