[SOLVED] Using FilenameFilter inline with JSP?

[B. Katz]

Greetings,

I've been working on what I thought should be a simple issue, but it's been driving me nuts for 2 days. :-P Doh!

What I need is:

To take the name of a file that is being passed from another page.

Check it against the filesystem, regardless of case.

Return the name of the file that is in the filesystem that matches the passed filename, Upper/Lower-case notwithstanding.

What I have so far is:

String ctxbase=getServletContext().getRealPath("/");

String procname = "";
if(!(request.getParameter("procname")==null))procname = request.getParameter("procname");

String fldrpath = "";
if(!(request.getParameter("fldrpath")==null))fldrpath = request.getParameter("fldrpath");

// Check if the bloody thing exists... 
String deliverthis = fldrpath+procname;
final File thisimg = new File(ctxbase+"./WEB-INF/repository/"+deliverthis);
File thisdir = new File(ctxbase+"./WEB-INF/repository/"+fldrpath);
File chkdir = thisdir.getAbsoluteFile();


// Getting the filter available to check the filesystem for assets.

FilenameFilter assetfilter = new FilenameFilter() {

        public boolean accept(File thisdir, String assetname) {
        return assetname.equalsIgnoreCase(assetname);

     }
};

if(!thisimg.exists()) {

        assetname=procname;
        String[] chklist = null;
        chklist =chkdir.list(assetfilter);

}

And, of course, this returns *everything* in that directory. If I try to use a passed-in variable, I get "Cannot refer to a non-final variable procname inside an inner class defined in a different method"

So, is there a simple way to get the FilenameFilter to do the comparison for me, or do I have to keep checking against the String Array it produces?

TIA.

[Bear Bibeault]

Moved to the I/O forum as it has little to do with JSP.

I still find it hard to believe that people still put Java code in a JSP in 2011.

[Paul Clapham]

B. Katz wrote:If I try to use a passed-in variable, I get "Cannot refer to a non-final variable procname inside an inner class defined in a different method".

And what happened when you declared "procname" final?

Edit: never mind, I see what happened. You want this:

String procnameParameter = request.getParameter("procname");
final procName = // an expression which returns either the parameter value or the empty string.

Or better, if the parameter value is null then there's no point in executing all of that code so just use an if-statement.

[B. Katz]

Thanks folks.

That did it! And, it once again proves that old adage of programming; "The longer you work on a problem, the simpler the resolution will be."

@Paul: If we get to that page, then there shouldn't be any way that procname would be empty or null, but I don't count on that. Thanks much!

And, @Bear: I was not the one who started the project, but it is in my hands to support it until we can get it switched to something more current (READ: more inline with current standards.).
Ummm... I'll just leave it at that. ;-p hehe

Thanks again.