BI Publisher Java API for Excel Template as RTF Template not generating correct Excel Report
Hello Anand. Yes, you may use an rtf template to generate an xls report. the version does not seem to support xlsx, but xls only.
In fact, as long as you pass the correct extension name to the function, you should be able to generate the following file types from a single rtf template: PDF, XLS, HTML, and RTF.
As an interesting side note, the xls file that is generated is actually an html file. You can rename it with an html extension and it will open in a browser rather than Excel.