Well, it looks like you can use the reading the file part of my
approach or David Smith's approach.
If you need to retrieve content from within a Microsoft Office file -
including properties, etc then you might take a look the Apache POI
project - http://poi.apache.org/
If you need to do a transformation on a PDF - Apache XMLGraphics may
be worth a look - http://xmlgraphics.apache.org/
Regards,
Dave
On Apr 29, 2008, at 4:48 PM, henry human wrote:
--- David Smith <[EMAIL PROTECTED]> schrieb:
No, I don't mean that. It should be able to retrieve
any type of file.
What you can do with it from within a jsp might be
somewhat limited thought.
Ok,
What exactly do you want to do with the file
contents within the jsp?
I will save them to a Content Server by the JSPs.
I will use some beans and taglib for the logic
implementation.
BTW, I highly recommend you read the documentation
for the jstl taglibs
and do some googling. I'm sure some research would
help you a lot.
--David
henry human wrote:
Hi David,
most of these files are PDF, XLS and not only TXT
format.
You are meaning that with a JSP definitvly one can
reads only TXT files?
i understood with help of
--- David Fisher <[EMAIL PROTECTED]> schrieb:
Henry doesn't say if these are text files or
binary
files.
If these are binary files like PDF, PPT and XLS
files then a servlet
will be needed - not a jsp.
We use variations like the following in both
Tomcat
4.1.31 and Tomcat
5.5.26
public class OpenFileServlet extends HttpServlet{
public void doGet (HttpServletRequest
request,
HttpServletResponse response) throws
ServletException, IOException {
// You probably want to look up the url
-
which is really a
path.
String url =
request.getParameter("url");
if(url == null) return;
// You'll know your mime types for your
content.
String ext =
request.getParameter("ext");
String content_type;
if (".ppt".equals(ext)) {content_type =
"application/vnd.ms-
powerpoint"; }
else if (".xls".equals(ext))
{content_type
= "application/
vnd.ms-excel"; }
else {content_type = "application/pdf";}
// we don't like to inline Office
documents.
boolean is_inline =
"application/pdf".equals(content_type);
File f = new File(url);
if ( f.exists() && f.length() > 0) {
response.setContentType(
content_type);
// The following works way better in
Windows IE than ext=
response.setHeader("Content-disposition",
(is_inline?"inline":"attachment")+";filename=" +
f.getName());
int lng = (int)f.length();
response.setContentLength( lng );
FileInputStream fis = new
FileInputStream(f);
byte[] chunk = new byte[16184];
int count;
while ((count = fis.read(chunk)) >=0
)
{
response.getOutputStream().write(chunk,0,count);
}
fis.close();
} else {
log("File not found: " + url);
}
}
}
FYI - this approach really became necessary about
when 4.1.29 came out
- at that time Tomcat got pretty strict with
non-Text being served via
JSP. All of our PDF and PPT content broke in
Windows
IE. And we had to
back out a whole release.
Regards,
Dave
On Apr 29, 2008, at 1:39 PM, David Smith wrote:
So... the "remote file" is available to the
local
system on a
network drive. That's a fun one. There are a
couple of different
ways to do this.
1. Using Windows fileshares
Let me preface this by saying *I've* never done
this. The few times
I've had a tomcat server on a Windows machine,
it
only ever accessed
local files. There are people on the list with
way
more experience
than I have.
As I understand it, as long as tomcat is running
under a user
account that has privileges to read the remote
file, you could use a
UNC path with java standard file access classes
and methods to read
the file. The mapped drive letter wouldn't work
unless tomcat was
only running while you are logged in. In a jsp,
this could be done
with a scriptlet:
<!-- import your classes at the top of the
jsp....
-->
<jsp:scriptlet>
try {
FileInputStream remoteFileReader = new
FileInputStream( "\\\
\remoteServer\\archive\\files\\myFile.txt" ) ;
// do something with the file
} catch ( Exception e ) {
// do something if the access fails
} finally {
try {
remoteFileReader.close() ;
} catch ( Exception e ) {}
}
</jsp:scriptlet>
It should be mentioned the system account most
services run under by
default does not have any privilege to access
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