wood burning stoves 2.0*
The moose likes Servlets and the fly likes file download prob......defective open Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Android Security Essentials Live Lessons this week in the Android forum!
JavaRanch » Java Forums » Java » Servlets
Reply locked New topic
Author

file download prob......defective open

biswajit goswami
Ranch Hand

Joined: Dec 05, 2005
Posts: 35
functionality retrieves file from dbase using hibernate and dialog box appears promting user to open save or cancel...........now the problem:
save it in the system and open the file .....its fine
BUT open the file straight from the dialog box then the appropriate application is triggered but the file is empty...eg if its a txt file then notepad opens it but there is nothing displayed.Here's the code in the action class:
public ActionForward downloadById(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
String fileId=request.getParameter(FILE_ID);
ServiceFactory factory=ServiceFactory.getServiceFactory();
FileBusinessService fileService=(FileBusinessService)factory.getService(FileBusinessService.class);
File file=fileService.retrieveFile(fileId);
String fileName=file.getName();
byte[] fileArray=file.getContent();
String fileType = fileName.substring(fileName.indexOf(".")+1,fileName.length());
setContentTypeHelper(response,fileType,fileName);//see down

ServletOutputStream outStream = response.getOutputStream();
outStream.write(fileArray);
outStream.flush();
outStream.close();

return mapping.findForward("find");

}

private void setContentTypeHelper(HttpServletResponse response,String fileType,String fileName){
if (fileType.trim().equalsIgnoreCase("txt")){
response.setContentType( "text/plain" );
}else if (fileType.trim().equalsIgnoreCase("doc")){
response.setContentType( "application/msword" );
}else if (fileType.trim().equalsIgnoreCase("xls")){
response.setContentType( "application/vnd.ms-excel" );
}else if (fileType.trim().equalsIgnoreCase("pdf")){
response.setContentType( "application/pdf" );
}else if (fileType.trim().equalsIgnoreCase("ppt")){
response.setContentType( "application/ppt" );
}else{
response.setContentType( "application/octet-stream" );
}
response.setHeader("Content-Disposition","attachment; filename=\""+fileName+"\"");
response.setHeader("cache-control", "no-cache");

}
ANY IDEA??
Ben Souther
Sheriff

Joined: Dec 11, 2004
Posts: 13410

biswajit,

Please do not ask the same question in multiple forums.
Doing so wastes the time of those who would help you.


Java API J2EE API Servlet Spec JSP Spec How to ask a question... Simple Servlet Examples jsonf
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: file download prob......defective open
 
Similar Threads
Upload Download File
file download from JSP
blob.getBytes(1, (int) bl.length()); gives Nullpointer Exception
file download
File download problem: defective open