[jboss-user] [Beginners Corner] - Getting java.lang.reflect.UndeclaredThrowableException when

[vganesh_76]

I am Getting java.lang.reflect.UndeclaredThrowableException when returning Collection obj from stateless bean.

Though I implement the Serializable in my return obj(i.e. Response), I got the exception,
java.lang.reflect.UndeclaredThrowableException
	at $Proxy96.readResult(Unknown Source)
	at com.ussearch.crm.web.report.ViewResultAction1.execute(ViewResultAction1.java:66)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at com.ussearch.util.web.filters.GZIPFilter.doFilter(GZIPFilter.java:39)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
	at java.lang.Thread.run(Thread.java:595)
Caused by: java.io.UTFDataFormatException: encoded string too long: 270422 bytes
	at java.io.DataOutputStream.writeUTF(DataOutputStream.java:347)
	at java.io.DataOutputStream.writeUTF(DataOutputStream.java:306)
	at org.jboss.serial.util.StringUtil.saveString(StringUtil.java:27)
	at org.jboss.serial.objectmetamodel.DataContainer.saveString(DataContainer.java:987)
	at org.jboss.serial.objectmetamodel.DataContainer.writeMyself(DataContainer.java:1056)
	at org.jboss.serial.objectmetamodel.DataContainer.saveData(DataContainer.java:936)
	at org.jboss.serial.io.JBossObjectOutputStream.writeObjectOverride(JBossObjectOutputStream.java:114)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:287)
	at org.jboss.serial.io.MarshalledObject.(MarshalledObject.java:51)
	at org.jboss.ejb3.SessionContainer.marshallResponse(SessionContainer.java:211)
	at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:223)
	at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:55)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
	at org.jboss.ejb3.stateless.StatelessClusteredProxy.invoke(StatelessClusteredProxy.java:100)

Can anyone help me to resolve this?

Here is my code 

My Stateless bean interface:

public interface ReportManager {
  | 
  | throws EJBException;
  | 
  |     public List<Response> readResult(String orderLineId);
  | }
My Local interface:

@javax.ejb.Local
  | public interface ReportManagerLocal extends ReportManager{
  | }
My Remote interface:

@javax.ejb.Remote
  | public interface ReportManagerRemote extends ReportManager{
  | }
My Bean Impl:

@javax.ejb.Stateless
  | @org.jboss.annotation.ejb.Clustered
  | public class ReportManagerBean implements ReportManagerLocal, ReportManagerRemote{
  |     private static org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(ReportManagerBean.class);
  | 
  |     private ReportDAO reportDAO;
  | 
  |     public ReportManagerBean(){
  |         reportDAO = new ReportDAO();
  |     }
  | 
  |     public List<Response> readResult(String _orderLineId){
  |         try{
  |             return reportDAO.readResult(_orderLineId);
  |         } catch(Exception ex){
  |             logger.error("Error in reading result: ", ex);
  |             throw new EJBException("Error while reading result for line id "+_orderLineId, ex);
  |         }
  |     }
  | }
My Response class:

import java.io.Serializable;
  | 
  | public class Response implements Serializable {
  |     private String response;
  | 
  |     public Response(){}
  | 
  |     public Response(String _response){
  |         response = _response;
  |     }
  |     
  |     public String getResponse(){
  |         return response;
  |     }
  | 
  |     public void setResponse(String _response){
  |         response = _response;
  |     }
  | }


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