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From Ricardo Rocha <>
Subject Re: XSP and file://
Date Fri, 24 Mar 2000 23:27:25 GMT
On Fri, 24 Mar 2000, Brett McLaughlin wrote:
> I am having trouble getting the XSP logicsheets located with file://
> Using something like:
>       file://C:/java/jakarta-tomcat/webapps/ROOT/XSL/JavaXML.xsp.xsl
> results in an error:
>       Unknown host: C:
> That seems a bit weird... I also tried using a relative path, and got the
> same error (Unknown host: webapps).  Someone let me know what (dumb) mistake
> I am making?

First of all, thanks Brett for helping me locate a bug, albeit not the same one
you pointed out, :-(

I've found a similar (the same?) problem using the "file://" protocol under
Sun's JDK1.2 for Linux.

The generated stack trace shows calls From
this point on, subsequent calls are ftp-related (weird...). Finally, a
call to yields an UnknownHostException
where the initial path component appears to be interpreted as the
host name (e.g. "home" for "file://home/java/tomcat...").

My workaround has been to use filenames relative to the webserver
_current_ virtual directory (i. e., that of the including xsp page). Thus,
instead of using:

  <?xml-logicsheet href="file://home/java/tomcat/webpages/logicsheets/ls.xsl"?>

I use:

  <?xml-logicsheet href="../logicsheets/ls.xsl"?>

Unfortunately, this requires that logicsheets are located under the web
server virtual directory structure, which may result in logicsheets being
browsable, clearly an undesirable side effect...

A workaround (valid only after my last bug fix) follows:

When not given a protocol for the "href" pseudo-attribute, Xsp tries to locate
the logicsheet as a file.

The "href" filename is checked to see if it's an absolute pathname for the
host operating sytem.

If it is an absolute pathname and it exists, then the file pointed to by "href"
is used.

Otherwise, the webserver's virtual path _relative to the including xsp page_
is preprended to the name given by the "href" pseudo-attribute.

Thus, if you want to use a logicsheet located _outside_ the webserver's
directory structure, just make sure you specify its _full_ pathname without
a URL protocol, like in:

  <?xml-logicsheet href="c:\java\logicsheets\brett.xsl"?>

Prior to my last commit, the current web virtual directory was preprended
in all cases. Shame on me! It works fine now...



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