I’ve been searching for solution on how to launch my report using JasperReport and I
found this thread… but still I was not able to successfully run my report. I had a feeling that it has something to do with my classpath and I dont know how to set it properly.
here’s my code:
try {
final JasperReport report = (JasperReport) JRLoader.loadObject(getClass().getResourceAsStream("/reports/sampleReport.jasper"));
GetSQLConnection getConnection = new GetSQLConnection();
final Connection conn = getConnection.connection();
//final File reportFile = new File("/reports/sampleReport.jasper");
if(conn != null){
System.out.println("You are connected");
}
StreamResource.StreamSource source = new StreamResource.StreamSource() {
@Override
public InputStream getStream() {
byte[] b = null;
try {
//b = JasperRunManager.runReportToPdf(getClass().getClassLoader().getResourceAsStream(reportFile.getPath()), null, conn);
b = JasperRunManager.runReportToPdf(report, new HashMap(), conn);
} catch (JRException ex) {
System.out.println(ex);
}
return new ByteArrayInputStream(b);
}
};
StreamResource resource = new StreamResource(source, "sampleReport.pdf", getApplication());
resource.setMIMEType("application/pdf");
getApplication().getMainWindow().open(resource, "_new");
} catch (Exception ex) {
Logger.getLogger(PayrollRegisterReport.class.getName()).log(Level.SEVERE, null, ex);
}
Im using netbeans IDE, I did try Web Pages/VAADIN/themes/myTheme/reports and Web Pages/reports classpath but no luck. I already have experience working with JasperReports in JSP and Swing without problem. I just cant figure it out on vaadin. please do help. Thank you.
SEVERE: java.lang.NullPointerException
at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2283)
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2296)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2767)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:798)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:298)
at net.sf.jasperreports.engine.util.ContextClassLoaderObjectInputStream.<init>(ContextClassLoaderObjectInputStream.java:53)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:214)
at com.hrms.utilities.PayrollRegisterReport.processPayrollRegisterReport(PayrollRegisterReport.java:35)
at com.hrms.modules.PayrollRegisterModule$4.buttonClick(PayrollRegisterModule.java:149)
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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
at com.vaadin.ui.Button.fireClick(Button.java:567)
at com.vaadin.ui.Button.changeVariables(Button.java:223)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.changeVariables(AbstractCommunicationManager.java:1460)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1404)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1329)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:761)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Tried another method but still did not work… Im quite running out of ideas.
GetSQLConnection getConnection = new GetSQLConnection();
final Connection conn = getConnection.connection();
File reportFile = new File("/reports/sampleReport.jasper");
final HashMap hm = new HashMap();
try {
final JasperReport report = (JasperReport) JRLoader.loadObject(reportFile.getAbsoluteFile());
StreamResource.StreamSource source = new StreamResource.StreamSource() {
@Override
public InputStream getStream() {
byte[] b = null;
try {
b = JasperRunManager.runReportToPdf(report, hm, conn);
} catch (JRException ex) {
System.out.println(ex);
}
return new ByteArrayInputStream(b);
}
};
StreamResource resource = new StreamResource(source, "sampleReport.pdf", getApplication());
resource.setMIMEType("application/pdf");
getApplication().getMainWindow().open(resource, "_new");
} catch (JRException ex) {
Logger.getLogger(PayrollRegisterReport.class.getName()).log(Level.SEVERE, null, ex);
}
here’s the error:
SEVERE: Terminal error:
com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in com.hrms.modules.PayrollRegisterModule$4 failed.
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:530)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
at com.vaadin.ui.Button.fireClick(Button.java:567)
at com.vaadin.ui.Button.changeVariables(Button.java:223)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.changeVariables(AbstractCommunicationManager.java:1460)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1404)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1329)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:761)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
at com.vaadin.terminal.StreamResource.<init>(StreamResource.java:87)
at com.hrms.utilities.PayrollRegisterReport.processPayrollRegisterReport(PayrollRegisterReport.java:51)
at com.hrms.modules.PayrollRegisterModule$4.buttonClick(PayrollRegisterModule.java:149)
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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
... 35 more
