title: Java EE javax.xml.bind.MarshalException
body: <p>I am getting <code>javax.xml.bind.MarshalException</code> error. I am sending List from my webservice to the backingbean and I have this error.</p>
  
  <pre><code>WARNING: invocation error on ejb endpoint Login_webservice at /Login_webserviceService/Login_webservice : javax.xml.bind.MarshalException
   - with linked exception:
  [javax.xml.bind.JAXBException: class JPA.Cantable nor any of its super class is known to this context.]
  javax.xml.ws.WebServiceException: javax.xml.bind.MarshalException
   - with linked exception:
  [javax.xml.bind.JAXBException: class JPA.Cantable nor any of its super class is known to this context.]
          at com.sun.xml.ws.message.jaxb.JAXBMessage.writePayloadTo(JAXBMessage.java:325)
          at com.sun.xml.ws.message.AbstractMessageImpl.writeTo(AbstractMessageImpl.java:142)
          at com.sun.xml.ws.encoding.StreamSOAPCodec.encode(StreamSOAPCodec.java:109)
          at com.sun.xml.ws.encoding.SOAPBindingCodec.encode(SOAPBindingCodec.java:278)
          at com.sun.xml.ws.transport.http.HttpAdapter.encodePacket(HttpAdapter.java:380)
          at com.sun.xml.ws.transport.http.HttpAdapter.access$100(HttpAdapter.java:92)
          at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:525)
          at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:285)
          at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:143)
          at org.glassfish.webservices.Ejb3MessageDispatcher.handlePost(Ejb3MessageDispatcher.java:116)
          at org.glassfish.webservices.Ejb3MessageDispatcher.invoke(Ejb3MessageDispatcher.java:87)
          at org.glassfish.webservices.EjbWebServiceServlet.dispatchToEjbEndpoint(EjbWebServiceServlet.java:196)
          at org.glassfish.webservices.EjbWebServiceServlet.service(EjbWebServiceServlet.java:127)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
  </code></pre>
  
  <p>Here is my code:</p>
  
  <p>Backing bean</p>
  
  <pre><code>@WebServiceRef(wsdlLocation = "http://localhost:26565/Login_webserviceService/Login_webservice?WSDL")
  public String login() {
      System.out.println("Login Phase entered");
      int result = 0;
      List list;
      List finalList = null;
      try {
          Weblogin.LoginWebserviceService service = new Weblogin.LoginWebserviceService();
          Weblogin.LoginWebservice port = service.getLoginWebservicePort();
          result = port.login(voterID, password);
          Weblogin.LoginWebservice port1 = service.getLoginWebservicePort();
          list = port1.candDetails(1);
          finalList = list;
          this.setList(finalList);
      } catch (Exception e) {
          e.printStackTrace();
      }
      if (result == 1)
          return "polling";
      else
          return "login";
  }
  </code></pre>
  
  <p>Webservice</p>
  
  <pre><code>public List candDetails(int pollEvent) {
      List resultList = null;
      List finalList = null;
      try {
          if (pollEvent == 1) {
              resultList = em.createNamedQuery("Cantable.findAll").getResultList();
              finalList = resultList;
          }
      } catch (Exception e) {
          e.printStackTrace();
      }
      return resultList;
  }
  </code></pre>