ZK Spreadsheet Essentials/Working with ZK Spreadsheet/Export to Different File Format/Export to Excel

Purpose

Export ZK Spreadsheet to Excel format

Getting Excel Exporter

ZK Spreadsheet comes with Exporter implementation that allows ZK Spreadsheet contents to be exported to Excel format. Get Excel exporter using Exporters.getExporter(String) as shown below.

Exporter c = Exporters.getExporter("excel");

ZUML

Here is an example ZUML file that display an Excel book file and has a button to export entire workbook.

<?page title="ZSS Export to Different File Format" contentType="text/html;charset=UTF-8"?>
<window width="100" height="100%"
	apply="org.zkoss.zssessentials.export.ExportComposer">
	<hbox>
		<button id="exportBtn" label="Export All"></button>
	</hbox>
	<spreadsheet id="spreadsheet"
		src="/WEB-INF/excel/export/export.xlsx" maxrows="200" maxcolumns="40"
		vflex="1" width="100%">
	</spreadsheet>
</window>

Composer

In composer there is one event handler for export button defined in above ZUML.

Exporting entire workbook

To export entire ZK Spreadsheet workbook contents use Exporter.export(Book, OutputStream) API. You should be able to get Book instance either by importing Excel book file using Importer interface or using Spreadsheet.getBook() API if ZK Spreadsheet component is already initialized with an Excel book file. You should also prepare OutputStream to which Excel format should be written to. For example

	public void onClick$exportBtn(Event evt) throws IOException {
		Book wb = spreadsheet.getBook();
		Exporter c = Exporters.getExporter("excel");
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		c.export(wb, baos);
		Filedownload.save(baos.toByteArray(), "application/file",
				wb.getBookName());
	}

Here I am using Exporters to get Exporter implementation to export ZK Spreadsheet contents to Excel format.

See the full source code for Composer here

Version History

Version	Date	Content

All source code listed in this book is at Github.