| [birt-dev] got NullPointerException |
|
Hi, Folks, I can use the MyPage.rptdocument to
generate a PDF file. the pdf file is perfect. When I use IDataExtractionTask to extract
data from MyPage.rptdocument, but I got NullPointerException. What is wrong with my code? Please help, Thank you very much. Chaohua IReportDocument iReportDocument =
reportEngine.openReportDocument("MyPage.rptdocument");
IDataExtractionTask iDataExtract =
reportEngine.createDataExtractionTask(iReportDocument);
ArrayList resultSetList =
(ArrayList)iDataExtract.getResultSetList() --------------------------------------------------------------------- Exception in thread "main"
java.lang.NullPointerException at
org.eclipse.birt.report.engine.api.impl.ResultMetaData.<init>(ResultMetaData.java:44) at
org.eclipse.birt.report.engine.api.impl.DataExtractionTask.addToResultSetList(DataExtractionTask.java:369) at
org.eclipse.birt.report.engine.api.impl.DataExtractionTask.getResultSetList(DataExtractionTask.java:353) |