Displaying Microsoft Excel spreadsheet content in JSPWiki pages is supported by using the JSPWiki Worksheet plugin—developed by Christian Fröhler.
Installation is straightforward, consisting of adding a few extra Java libraries to your application server and the plugin itself. After a restart, insert some easy JSPWiki markup to display the contents of an attached Excel file directly in the wiki page:
The content can be visually customised with JSPWiki's wide range of styles.
For more information see the Worksheet Plugin page. Development contributions to enhance and improve the plugin are welcome!