Forcing attachments to download from content outside portal framework

Question

We are having an issue with binary content which resides outside portal framework in a separate system being downloaded by users. Whenever a page flow action is submitted and the binary data(xls, pdf, doc files etc) is returned by the system(documentum in this case) and we try to get the download option it shows data as garbage on the jsp but does not prompt to download the file. Here is the code for 2 options tried
Option 1 - Trying to write binary content from Page Flow
Code in Page Flow
byte[] binaryData = document.getBinaryDocument(); //'document' is the data object here
HttpServletResponse response = getResponse();
response.setContentType("application/ms-excel");
response.setContentLength(binaryData.length);
response.setHeader("Content-disposition", "attachment; filename=\"" + document.getFileName() + ".xls\"");    //document does not return file extension
response.getOutputStream().write(binaryData);Option 2 - Trying to write binary content from Servlet Context outside portal framework
Code in Page Flow
getRequest().setAttribute("binarydoc", document); Code in JSP
com.jeni.DocumentumData doc = (com.jeni.DocumentumData)request.getAttribute("binarydoc");
byte[] binaryData = doc.getBinaryDocument();
response.setContentType("application/ms-excel");
response.setContentLength(binaryData.length);
response.setHeader("Content-disposition", "attachment; filename=\"" + doc.getFileName() + ".xls\""); //document does not return file extension
response.getOutputStream().write(binaryData);
response.getOutputStream().flush();Both options produce garbage on the jsp page.
Please respond soon
Thanks

Answer 1

Yes. It did not work here's the changed code in the JSP page in Option 2 that produced the same result.
com.jeni.DocumentumData doc = (com.jeni.DocumentumData)request.getAttribute("binarydoc");
byte[] binaryData = doc.getBinaryDocument();
response.reset();
response.setContentType("application/ms-excel");
response.setContentLength(binaryData.length);
response.setHeader("Content-disposition", "attachment; filename=\"" + doc.getFileName() + ".xls\""); //document does not return file extension
response.getOutputStream().write(binaryData);
response.getOutputStream().flush();
response.flushBuffer();