Java 使用DynamicJasper API在单个报告中生成横向和纵向

我的应用程序中有不同的模块。每个模块都可以导出为excel、word和pdf格式。报告的格式可以是横向的，也可以是纵向的。现在，我需要编译所有这些报告，并作为一个单独的文件导出。但我面临的问题是，在导出时，DynamicJasper仅以单一格式显示，即横向或纵向

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如何在使用DynamicAsper API的单个报告中使用这两种格式显示我的报告？

如果您拥有或可以获得JasperPrint对象的句柄，则可以设置方向：

final JasperDesign jasperDesign = JRXmlLoader.load(someInputStream);
final JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
final JasperPrint jasperPrint =   jasperPrint = JasperFillManager.fillReport( jasperReport, parameters, dataSourceOrConnection);    
...
jasperPrint.setOrientation(OrientationEnum.LANDSCAPE); // Pick
jasperPrint.setOrientation(OrientationEnum.PORTRAIT);  // One 
...
someJRExporter.exportReport();

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您还可以使用JasperPrint对象设置页面宽度和高度。

您可以创建主报告并向其中添加子报告，这是主报告的示例以及如何添加子报告：

public DynamicReport buildDynamicReport() throws ReportDocumentGenerationException {
  DynamicReportBuilder drb = new DynamicReportBuilder();
  drb.setDetailHeight(detailHeight)     
  .setMargins(properties.getReportMargins().getTopMargin(), properties.getReportMargins().getBottomMargin(), properties.getReportMargins().getLeftMargin(), properties.getReportMargins().getRightMargin())     
  .setDefaultStyles(null, null, null, getSpoolStyle(SpoolRow.PLAIN_ATTRIBUTE))    
  .setPageSizeAndOrientation(new Page(**/*Your document dimensions and orientation*/**)
  .setColumnsPerPage(1);
   for(ReportDocumentInformationPage page: reportInformation.getPaginas()){
            drb.addConcatenatedReport(getPageSubReport(page.getPageNumber()),new ClassicLayoutManager(),"DS"+page.getPageNumber().toString(),DJConstants.DATA_SOURCE_ORIGIN_PARAMETER, DJConstants.DATA_SOURCE_TYPE_JRDATASOURCE,!page.getPageNumber().equals(1));
            params.put("DS"+page.getPageNumber().toString(), getReportJRDataSource(page.getPageNumber())  );
        }
        drb.setUseFullPageWidth(true);
        DynamicReport dr = drb.build();
        return dr;
    }

*private DynamicReport getPageSubReport(int i) throws ReportDocumentGenerationException {
        try{
            DynamicReportBuilder drb = new DynamicReportBuilder();
            drb.setDetailHeight(detailHeight)
            .setReportName("Reporte"+i)
            .setMargins(properties.getReportMargins().getTopMargin(), properties.getReportMargins().getBottomMargin(), properties.getReportMargins().getLeftMargin(), properties.getReportMargins().getRightMargin())
            .setDefaultStyles(null, null, null, getSpoolStyle(SpoolRow.PLAIN_ATTRIBUTE))    
            .setPageSizeAndOrientation(new Page(**/*Your specific Page dimensions and orientation***/)
            .setColumnsPerPage(1);

            AbstractColumn spoolColumn = ColumnBuilder.getNew()     
            .setColumnProperty("value", String.class.getName())     
            .setTitle(null)     
            .setWidth(150)
            .build();       
            spoolColumn.setConditionalStyles(getSpoolConditionalStyle());

            drb.addColumn(spoolColumn);
            drb.setUseFullPageWidth(true);
            drb.addField("attributes", String.class.getName());
            DynamicReport dr = drb.build();
            return dr;
        }catch(ColumnBuilderException cbe){
            cbe.printStackTrace();
            throw new ReportDocumentGenerationException("No se pudo definir correctamente la columna del reporte para la pagina "+i);
        }catch(Exception e){
            e.printStackTrace();
            throw new ReportDocumentGenerationException("No se pudo generar la pagina "+i+" del reporte");
        }
    }*

以下是如何创建这些子报告的示例：

public DynamicReport buildDynamicReport() throws ReportDocumentGenerationException {
  DynamicReportBuilder drb = new DynamicReportBuilder();
  drb.setDetailHeight(detailHeight)     
  .setMargins(properties.getReportMargins().getTopMargin(), properties.getReportMargins().getBottomMargin(), properties.getReportMargins().getLeftMargin(), properties.getReportMargins().getRightMargin())     
  .setDefaultStyles(null, null, null, getSpoolStyle(SpoolRow.PLAIN_ATTRIBUTE))    
  .setPageSizeAndOrientation(new Page(**/*Your document dimensions and orientation*/**)
  .setColumnsPerPage(1);
   for(ReportDocumentInformationPage page: reportInformation.getPaginas()){
            drb.addConcatenatedReport(getPageSubReport(page.getPageNumber()),new ClassicLayoutManager(),"DS"+page.getPageNumber().toString(),DJConstants.DATA_SOURCE_ORIGIN_PARAMETER, DJConstants.DATA_SOURCE_TYPE_JRDATASOURCE,!page.getPageNumber().equals(1));
            params.put("DS"+page.getPageNumber().toString(), getReportJRDataSource(page.getPageNumber())  );
        }
        drb.setUseFullPageWidth(true);
        DynamicReport dr = drb.build();
        return dr;
    }

*private DynamicReport getPageSubReport(int i) throws ReportDocumentGenerationException {
        try{
            DynamicReportBuilder drb = new DynamicReportBuilder();
            drb.setDetailHeight(detailHeight)
            .setReportName("Reporte"+i)
            .setMargins(properties.getReportMargins().getTopMargin(), properties.getReportMargins().getBottomMargin(), properties.getReportMargins().getLeftMargin(), properties.getReportMargins().getRightMargin())
            .setDefaultStyles(null, null, null, getSpoolStyle(SpoolRow.PLAIN_ATTRIBUTE))    
            .setPageSizeAndOrientation(new Page(**/*Your specific Page dimensions and orientation***/)
            .setColumnsPerPage(1);

            AbstractColumn spoolColumn = ColumnBuilder.getNew()     
            .setColumnProperty("value", String.class.getName())     
            .setTitle(null)     
            .setWidth(150)
            .build();       
            spoolColumn.setConditionalStyles(getSpoolConditionalStyle());

            drb.addColumn(spoolColumn);
            drb.setUseFullPageWidth(true);
            drb.addField("attributes", String.class.getName());
            DynamicReport dr = drb.build();
            return dr;
        }catch(ColumnBuilderException cbe){
            cbe.printStackTrace();
            throw new ReportDocumentGenerationException("No se pudo definir correctamente la columna del reporte para la pagina "+i);
        }catch(Exception e){
            e.printStackTrace();
            throw new ReportDocumentGenerationException("No se pudo generar la pagina "+i+" del reporte");
        }
    }*

希望有帮助。

您可以看看这个问题。它是关于JasperReports API的，但这是DynamicJasper API的一部分。您可以为每个报表设置方向，然后在JASPER_PRINT_LIST参数的帮助下将其合并在一起。你们也可以看到这个问题