Question

I have generated excel report and i want the file to be downloaded by the user ,so how to set the response properties (content type) .

Answer 1

You need to set the headers and content type like this:

    response.setHeader "Content-disposition", "attachment;filename=myExcel.xls"
    response.contentType = "application/vnd.ms-excel"

Then stream the content in the response.

Edit: If you need to set the content length:

    response.contentLength = 100

Content length documented in the javadoc