CdfHttpServletRequestWrapper request = new CdfHttpServletRequestWrapper( httpServletRequest );
if( params != null ){
Iterator<String> it = params.keySet().iterator();
while( it.hasNext() ){
String key = it.next();
request.addParameter( key, params.get( key ) );
}
}
String buffer = XactionUtil.execute( contentType, file, request, httpServletResponse, userSession, null );