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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 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 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();

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/" );
}else if (fileType.trim().equalsIgnoreCase("pdf")){
response.setContentType( "application/pdf" );
}else if (fileType.trim().equalsIgnoreCase("ppt")){
response.setContentType( "application/ppt" );
response.setContentType( "application/octet-stream" );
response.setHeader("Content-Disposition","attachment; filename=\""+fileName+"\"");
response.setHeader("cache-control", "no-cache");

Ben Souther

Joined: Dec 11, 2004
Posts: 13410


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
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subject: file download prob......defective open
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