如何设置JRViewer导出选项？

Question

最近，我使用最新的jasper-reports lib更新了我的项目。有一个新的JRViewer类（net.sf.jasperreports.swing）代替了旧的类（net.sf.jasperreports.view）。现在我不知道如何设置导出选项。旧代码就像：

JRPdfSaveContributor pdf = new JRPdfSaveContributor(locale, resBundle);
JRRtfSaveContributor rtf = new JRRtfSaveContributor(locale, resBundle);
JRSingleSheetXlsSaveContributor xls = new JRSingleSheetXlsSaveContributor(locale, resBundle);
JRDocxSaveContributor docx = new JRDocxSaveContributor(locale, resBundle);
viewer.setSaveContributors(new JRSaveContributor[] { pdf, rtf, xls, docx });

Answer 1

您必须扩展net.sf.jasperreports.swing.JRViewer并将导出贡献者设置为JRViewerToolbar。像这样：

public class MyJRViewer extends JRViewer {
    //define the constructor that you use
    public MyJRViewer(JasperPrint jasperPrint) {
        super(jasperPrint);
    }

    @Override
    protected JRViewerToolbar createToolbar() {
        JRViewerToolbar toolbar = super.createToolbar();

        Locale locale = viewerContext.getLocale();
        ResourceBundle resBundle = viewerContext.getResourceBundle();
        JRPdfSaveContributor pdf = new JRPdfSaveContributor(locale, resBundle);
        JRRtfSaveContributor rtf = new JRRtfSaveContributor(locale, resBundle);
        JRSingleSheetXlsSaveContributor xls = new JRSingleSheetXlsSaveContributor(locale, resBundle);
        JRDocxSaveContributor docx = new JRDocxSaveContributor(locale, resBundle);
        toolbar.setSaveContributors(new JRSaveContributor[] {pdf, rtf, xls, docx});

        return toolbar;
    }   
}