Jasper Report + iReport + NetBeans 4

[Onek]

Hola a todos,
Los Felicito por el foro, se ve que todos estan muy preparados en lo que respecta a jasperReports...
Bueno, entrando en el tema yo tengo un problema cuando quiero generar un pdf , utlizo el iReport para crear el jasper.. este es mi codigo:
public void generatePdfReport(String templateFile, String destinationFile) throws Exception{
try{
Map parameters = new HashMap();
LoadedMaterialSheetHeader header = (LoadedMaterialSheetHeader)this.getHeader();
parameters.put("lsInvoice",header.getLsInvoice());
parameters.put("lsDestination",header.getLsDestina tion());
parameters.put("lsTrailler",header.getLsTrailer()) ;
parameters.put("lsMaster",header.getLsMaster());
parameters.put("lsClient",header.getLsClient());
parameters.put("lsSeal",header.getLsSeal());
parameters.put("lsBooking",header.getLsBooking());
parameters.put("lsComments",header.getLsComments() );
parameters.put("lsShipmentype",header.getLsShipmen type());

JRDataSource data = new JRBeanCollectionDataSource((Collection)this.getLin es());
JasperPrint jp = JasperFillManager.fillReport(templateFile,paramete rs,data); //aqui es donde se henera la exception
JasperExportManager.exportReportToPdfFile(jp,desti nationFile);

}catch(Exception e){
e.printStackTrace();
}
finally{
System.out.println("ok");
}
}

esta es la Exception que se genera...

java.lang.NoSuchMethodException: Unknown property 'shipid'
at org.apache.commons.beanutils.PropertyUtils.getSimp leProperty(PropertyUtils.java:1175)
at org.apache.commons.beanutils.PropertyUtils.getNest edProperty(PropertyUtils.java:772)
at org.apache.commons.beanutils.PropertyUtils.getProp erty(PropertyUtils.java:801)
at net.sf.jasperreports.engine.data.JRBeanCollectionD ataSource.getFieldValue(JRBeanCollectionDataSource .java:114)
at net.sf.jasperreports.engine.fill.JRBaseFiller.next (JRBaseFiller.java:872)
at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillReport(JRVerticalFiller.java:116)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:622)
at net.sf.jasperreports.engine.fill.JRFiller.fillRepo rt(JRFiller.java:116)
at net.sf.jasperreports.engine.JasperFillManager.fill Report(JasperFillManager.java:428)
at net.sf.jasperreports.engine.JasperFillManager.fill Report(JasperFillManager.java:344)
at directsales.shipping.documents.LoadedMaterialSheet .generatePdfReport(LoadedMaterialSheet.java:69)
at org.apache.jsp.html.shipping.od_005floeaded_005fsh eet_005fgenerator_jsp._jspService(od_005floeaded_0 05fsheet_005fgenerator_jsp.java:73)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:298)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:536)

NESTED BY :
net.sf.jasperreports.engine.JRException: Error retrieving field value from bean : shipid
at net.sf.jasperreports.engine.data.JRBeanCollectionD ataSource.getFieldValue(JRBeanCollectionDataSource .java:126)
at net.sf.jasperreports.engine.fill.JRBaseFiller.next (JRBaseFiller.java:872)
at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillReport(JRVerticalFiller.java:116)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:622)
at net.sf.jasperreports.engine.fill.JRFiller.fillRepo rt(JRFiller.java:116)
at net.sf.jasperreports.engine.JasperFillManager.fill Report(JasperFillManager.java:428)
at net.sf.jasperreports.engine.JasperFillManager.fill Report(JasperFillManager.java:344)
at directsales.shipping.documents.LoadedMaterialSheet .generatePdfReport(LoadedMaterialSheet.java:69)
at org.apache.jsp.html.shipping.od_005floeaded_005fsh eet_005fgenerator_jsp._jspService(od_005floeaded_0 05fsheet_005fgenerator_jsp.java:73)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:298)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:802)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:536)
Caused by: java.lang.NoSuchMethodException: Unknown property 'shipid'
at org.apache.commons.beanutils.PropertyUtils.getSimp leProperty(PropertyUtils.java:1175)
at org.apache.commons.beanutils.PropertyUtils.getNest edProperty(PropertyUtils.java:772)
at org.apache.commons.beanutils.PropertyUtils.getProp erty(PropertyUtils.java:801)
at net.sf.jasperreports.engine.data.JRBeanCollectionD ataSource.getFieldValue(JRBeanCollectionDataSource .java:114)
... 38 more