JSP Click Link Download file function

/** *//**

* Implement file Save function

*

* @param text

* Contents of the file

* @param fileName

* File name

* @return

*/

Protected string RenderFile (string text, String fileName)

Throws IOException

{

Response.AddHeader ("Content-disposition", "attachment; Filename= "

+ FileName);

Response.setcontenttype ("Application/octet-stream");

Response.setcharacterencoding ("GB2312");

Response.getwriter (). write (text);

Response.flushbuffer ();

Response.getwriter (). Close ();

return null;

}

Action to download:

/** *//**

* Provide a download method

* @return

*/

Public String Down ()

{

String dir = GetFullPath () + "/upload/file/";

Try

{

if (! Fileutils.exists (dir))

{

New File (dir). Mkdirs ();

}

Random r = new Random (System.currenttimemillis ());

Integer randomint = R.nextint ();

This.renderfile ("Test content:" + randomint,randomint + ". txt");

}

catch (IOException E)

{

E.printstacktrace ();

This.rendertext (E.getmessage ());

}

return null;

}

Page link Call:

Download