JasperReports無法使用JSF 2和PrimeFaces 3.5導出數據

Question

我正在使用PrimeFaces 3.5 ， JasperReports 5.2和JSF 2.x開發應用程序。 我的舊應用程序中有一些由JasperReports 4.5和JSF 1.2編寫的報告頁面。 所有這些報告頁面都在舊應用程序中運行。 我試圖在新應用程序中傳輸這些報告頁面。 在新的應用程序中一切正常，但無法導出報告，也沒有出現任何錯誤。 我想念什么嗎？

這是我的代碼，可以在舊的Jsf 1.2應用程序中完美運行，但不適用於新的應用程序。

private void prepareReport(String reportPath, @SuppressWarnings("rawtypes") List beanList, String outputFormat, String reportName) {
    JasperReport jReport = null;
    JasperPrint jPrint = null;
    try {
        jReport = JasperCompileManager.compileReport(reportPath);
        jPrint = JasperFillManager.fillReport(jReport, jasperParameter, new JRBeanCollectionDataSource(beanList));
    } catch (JRException e) {
        e.printStackTrace();
    }

    FacesContext ctx = FacesContext.getCurrentInstance();
    HttpServletResponse response = (HttpServletResponse) ctx.getExternalContext().getResponse();
    OutputStream outputStream = null;

    try {
        outputStream = response.getOutputStream();
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        if (outputFormat.equals(OUTPUT_FORMAT_PDF)) {
            response.setContentType("application/pdf");
            response.setHeader("Content-disposition", "attachment; filename=" + reportName + ".pdf");
            JasperExportManager.exportReportToPdfStream(jPrint, outputStream);
        } else if (outputFormat.equals(OUTPUT_FORMAT_EXCEL)) {
            response.setContentType("application/xls");
            response.setHeader("Content-disposition", "attachment; filename=" + reportName + ".xls");
            JExcelApiExporter exporter = new JExcelApiExporter();
            exporter.setParameter(JRExporterParameter.JASPER_PRINT, jPrint);
            exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outputStream);
            exporter.exportReport();
        } else if (outputFormat.equals(OUTPUT_FORMAT_RTF)) {
            response.setContentType("application/rtf");
            response.setHeader("Content-disposition", "attachment; filename=" + reportName + ".rtf");
            JRRtfExporter exporter = new JRRtfExporter();
            exporter.setParameter(JRExporterParameter.JASPER_PRINT, jPrint);
            exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outputStream);
            exporter.exportReport();
        }
    } catch (JRException e) {
        e.printStackTrace();
    }

    try {
        outputStream.flush();
        outputStream.close();
        FacesContext.getCurrentInstance().responseComplete();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

這是我稱為支持bean的JSF 2 xhtml頁面的一部分：

<h:panelGrid columns="4" columnClasses="alignTop,alignTop,alignTop,alignTop">
    <p:commandButton id="pdfFormatBtn" actionListener="#{reports.pdfFormatSelected}" value="PDF" immediate="true"
        icon="pdfIcon" styleClass="tableCell"/>
    <p:commandButton id="excelFormatBtn" actionListener="#{reports.pdfFormatSelected}" value="EXCEL" immediate="true"
        icon="excelIcon" styleClass="tableCell"/>
    <p:commandButton id="rtfFormatBtn" actionListener="#{reports.pdfFormatSelected}" value="RTF" immediate="true"
        icon="rtfIcon" styleClass="tableCell"/>
    <p:commandButton id="cleanBtn" actionListener="#" value="#{general.clean}" immediate="true"
        icon="ui-icon-refresh" styleClass="tableCell"/>
</h:panelGrid>

Answer 1

嘗試使用ajax =“ false”

<p:commandButton id="pdfFormatBtn" actionListener="#{reports.pdfFormatSelected}" value="PDF" immediate="true" icon="pdfIcon" styleClass="tableCell" ajax="false"/>