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[英]jasper report showing nothing and getting error NullPointer Error on Netbeans
[英]Jasper Report and Netbeans 7.2
我无法通过按钮加载报告。这是我的代码。当我单击按钮时,它显示向下的图像错误。
try {
InputStream in =
getClass().getResourceAsStream("C:/Users/RaMiNdU/Documents/NetBeansProjects/TimeTable
Generator/src/timetable/generator/sem1.jrxml");
JasperDesign jasperDesign = JRXmlLoader.load(in);
Map<String, Object> param = new HashMap<>();
JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, param );
JasperViewer.viewReport(jasperPrint, false);
} catch (Exception e) {
System.out.println(e.getMessage());
}
将commons-digester.jar添加到您的类路径中,您应该通过
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