[Struts] Dowload Action
28/01/2009
/**
* Download a Content.
* @param mapping The action mapping
* @param form The action form
* @param request The requst
* @param response The response
* @return a valid struts mapping
*/
public final ActionForward download(final ActionMapping mapping, final ActionForm form, final HttpServletRequest request, final HttpServletResponse response) {
byte[] content = request.getParameter("content");
String fileName = request.getParameter("fileName");
String fileContentType = request.getParameter("fileContentType");
String view = request.getParameter("view");
OutputStream out = null;
try {
response.setHeader("Pragma", "public");
response.setHeader("Cache-Control", "max-age=1, must-revalidate");
// This will ask the user to open or save the content (without it the browser will try to download it)
if (!"true".toLowerCase().equals(view) || StringHelper.isEmpty(doc.getFileContentType())) {
response.setHeader("Content-Disposition", "attachment; filename="+fileName);
}
response.setContentLength(content.length);
if (!StringHelper.isEmpty(fileContentType)) {
response.setContentType(fileContentType);
} else {
response.setContentType("application/octet-stream");
}
out = response.getOutputStream();
out.write(content);
} catch (Exception ex) {
logger.error(ex.getMessage(), ex);
return mapping.findForward(ERROR);
} finally {
if (out != null) {
try {
out.flush();
out.close();
} catch (Exception ex) {
logger.error(ex.getMessage(), ex);
}
}
}
return null;
}
