Getting Null Pointer when fill the report

[pavelgoev]

Hello,

 

I am getting Null Pointer Exception when fill the report (generate a PDF); please see the code and stack trace below.

The report works in iReport (use the same db connection), and dosn't work when use JasperReports.

Use the latest version 3.7.2, Java 5

Would appreciate if any ideas what's wrong.

Error:

10/05/27 15:10:04 java.lang.NullPointerException
10/05/27 15:10:04     at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:63)
10/05/27 15:10:04     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:402)
10/05/27 15:10:04     at com.collectamerica.libra.jasperpdf.JasperPDFGeneration.generatePDFFromDB(JasperPDFGeneration.java:196)
10/05/27 15:10:04     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
10/05/27 15:10:04     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
10/05/27 15:10:04     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
10/05/27 15:10:04     at java.lang.reflect.Method.invoke(Method.java:597)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.system.SetContextActionInterceptor.invoke(SetContextActionInterceptor.java:44)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.system.TxRequiredInterceptor.invoke(TxRequiredInterceptor.java:50)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
10/05/27 15:10:04     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
10/05/27 15:10:04     at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
10/05/27 15:10:04     at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
10/05/27 15:10:04     at JasperPDFGeneration_RemoteProxy_3bkcocn.generatePDFFromDB(Unknown Source)
10/05/27 15:10:04     at com.collectamerica.libra.jasperpdf.runtime.JasperPDFGenerationWebServiceSoapHttp_Tie.invoke_generatePDFFromDB(JasperPDFGenerationWebServiceSoapHttp_Tie.java:123)
10/05/27 15:10:04     at com.collectamerica.libra.jasperpdf.runtime.JasperPDFGenerationWebServiceSoapHttp_Tie.processingHook(JasperPDFGenerationWebServiceSoapHttp_Tie.java:330)
10/05/27 15:10:04     at oracle.j2ee.ws.server.StreamingHandler.handle(StreamingHandler.java:297)
10/05/27 15:10:04     at oracle.j2ee.ws.server.JAXRPCProcessor.doEndpointProcessing(JAXRPCProcessor.java:431)
10/05/27 15:10:04     at oracle.j2ee.ws.server.WebServiceProcessor.invokeEndpointImplementation(WebServiceProcessor.java:379)
10/05/27 15:10:04     at oracle.j2ee.ws.server.JAXRPCProcessor.doRequestProcessing(JAXRPCProcessor.java:294)
10/05/27 15:10:04     at oracle.j2ee.ws.server.WebServiceProcessor.processRequest(WebServiceProcessor.java:114)
10/05/27 15:10:04     at oracle.j2ee.ws.server.JAXRPCProcessor.doService(JAXRPCProcessor.java:151)
10/05/27 15:10:04     at oracle.j2ee.ws.server.WebServiceServlet.doPost(WebServiceServlet.java:200)
10/05/27 15:10:04     at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
10/05/27 15:10:04     at javax.servlet.http.HttpServlet.service(HttpServlet.java:857)
10/05/27 15:10:04     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:734)
10/05/27 15:10:04     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:391)
10/05/27 15:10:04     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:908)
10/05/27 15:10:04     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:458)
10/05/27 15:10:04     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)
10/05/27 15:10:04     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)
10/05/27 15:10:04     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
10/05/27 15:10:04     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
10/05/27 15:10:04     at java.lang.Thread.run(Thread.java:619)
 

Code:

    public String generatePDFFromDB(String debtorId,                                    String templateName) throws JRException {        String result = "SUCCESS";        /* JasperReport is the object        that holds our compiled jrxml file */        JasperReport jasperReport = null;        /* JasperPrint is the object contains        report after result filling process */        JasperPrint jasperPrint = null;        // jasperParameter is a Hashmap contains the parameters        // passed from application to the jrxml layout        HashMap jasperParameter = new HashMap();        jasperParameter.put("debtorIdParam", "20008764");        try {            // connection is the data source we used to fetch the data from                   Connection con = establishConnection();                       // jrxml compiling process//            jasperReport =//                    JasperCompileManager.compileReport(CONTRACT_JASPER_DIR +//                                                       "reporttest1.jasper");                                                                  InputStream inStream =                this.getClass().getResourceAsStream(CONTRACT_JASPER_DIR +                                                    "reporttest1.jasper");            jasperReport = (JasperReport)JRLoader.loadObject(inStream);                                                                                                            System.out.println("JASPER REPORT"); if (jasperReport == null) System.out.println("JASPER REPORT is null"); if (con == null) System.out.println("JASPER CONNECTION is null");                                                                   // filling report with data from data source            jasperPrint =                    JasperFillManager.fillReport(jasperReport, jasperParameter,                                                 con);System.out.println("JASPER PRINT"); System.out.println("JASPERTEST " + jasperPrint.toString());            // exporting process export to PDF            JasperExportManager.exportReportToPdfFile(jasperPrint,                                                      "/mnt/datafiles/creditreports/" +                                                      "cbr_" + debtorId +                                                      ".pdf");            con.close();            connection.close();        } catch (ClassNotFoundException enotfound) {            enotfound.printStackTrace(System.err);            System.out.println("ClassNotFoundException JASPER :" + enotfound.getMessage());        } catch (SQLException esql) {            esql.printStackTrace(System.err);            System.out.println("SQLException JASPER :" + esql.getMessage());                   } catch (Exception e) {            e.printStackTrace(System.err);            System.out.println("Exception JASPER : " + e.getMessage());                   }        return result;    }

[thangalin]

Line 196 of JasperPDFGeneration.java is trying to call a method on a null object.