efficient way to create a xls file in a jsp page

what is the most efficient way to create a xls file in a jsp page?

I created an xls file using p开发者_开发技巧oi in jsp page, but if not the most efficient.

Thanks

A lot of times when I need to make an xls file, I create a CSV file instead and use that to generate the XLS. Obviously, creating comma-separated values is very simple and importing / opening a plain-text CSV file as an Excel document is equally easy.

I hope that helps in some way,

--gMale

For cases more complex than CSV can handle (e.g. colourful formatting) I generate XML-based XLS file, which is very simple, almost like writing out HTML.

I never studied the format. Instead, I manually create the file in Excel, save it as XML, and write a code that produces a file of the same structure.