带有空值的碧玉报告 pdf

Question

我使用以下代码创建了一个 jasper 报告

JasperPrint print = null;
    Map<String, Object> datosReporte = new HashMap<String, Object>();

    JasperReport reporteJasper = crearReporteJasper();
    String rutaPDF = "C:\AAPG\algo.pdf";

    try {

        for (int i =0; i< lista.size(); i++) {

            Fin700PDFVO r = (Fin700PDFVO)lista.get(i);

                    datosReporte.put("PROVEEDOR", r.getProveedor());
                    datosReporte.put("RUT", Integer.toString(r.getRut()));
                    datosReporte.put("TIPO", r.getTipo());
                    datosReporte.put("CANTREGISTROS", Integer.toString(r.getCantRegistros()));
                    datosReporte.put("SUMTOTUF", Integer.toString(r.getSumTotUF()));
                    datosReporte.put("SUMTOTPESOS", Integer.toString(r.getSumTotPesos()));


        }
            print = JasperFillManager.fillReport(reporteJasper, datosReporte, new JREmptyDataSource());
            JasperExportManager.exportReportToPdfFile(print, rutaPDF);

和

private JasperReport crearReporteJasper() {
    JasperReport report = null;
    String sourceFileName = "ReporteFin700";
    InputStream is = null;

    try {
        is = this.getClass().getResourceAsStream("/resources/" + sourceFileName + ".jrxml");
        report = JasperCompileManager.compileReport(is);
    } catch (Exception e) {
        logger.error("Error al compilar plantilla: " + sourceFileName, e);
        throw new ServiceException("Error al compilar plantilla: " + sourceFileName);
    }
    return report;

但是当我尝试运行这段代码时，我得到了一个只有 de 列 header 且值为 null 的 pdf。

Answer 1

我解决了这个问题，正如 Alex K 提到的那样更改 JREmptyDataSource，更改为：

print = JasperFillManager.fillReport(reporteJasper, datosReporte, new JREmptyDataSource());

为此

print = JasperFillManager.fillReport(reporteJasper, datosReporte, new JRMapArrayDataSource(new Object[] { datosReporte }));

带有空值的碧玉报告 pdf

jasper report pdf with null values

java

jasper-reports