I have been using displaytag to export data with struts2. My application contains Customer Search UI,
that UI contains search fields and submit button. I filled data in search field after that i clicked on SEARCH
button then application shows data in display tag on same page. now i clicked on
Export option then application shows only Search Textfield and SEARCH Button. Grid data is no more display
and in console i got following exception.
2009-05-14 19:02:54,015 [ERROR] [/app].[default] - Servlet.service()
for servlet default threw exception
Exception: [.TableTag] Unable to reset response before returning
exported data. You are not using an export filter. Be sure that no
other jsp tags are used before display:table or refer to the
displaytag documentation on how to configure the export filter
(requires j2ee 1.3).