Re: Question on SSI

[Marc Chamberlin]

 On 9/1/2010 1:49 PM, Christopher Schultz wrote:
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Marc,

On 9/1/2010 4:13 PM, Marc Chamberlin wrote:
  Hello -  I am running a Tomcat6.0 server both stand-alone and with
Eclipse, and am in the process of developing a webapp that I will want
to make available to all our users via a server side include statement.
Uhh... you want the webapp to be available via SSI? I'm pretty sure
that's the problem of whoever wants to use your service. You can't
configure SSI on someone else's site. Maybe I'm misunderstanding you.
Thanks Christopher for your taking the time to reply, again much 
appreciated! What I am trying to accomplish is to provide users with 
some services that can be included on their web pages, simply by 
including a server side include statement, which I will define for them, 
in their web pages. (I run a Tomcat server for a number of users and 
host their websites for them.)
I have this working in a limited sense, in that I got it working using
the filter version but was unsuccessful getting the servlet version
working, which is acceptable. (I am not clear on what the real
difference between the two approaches is, documentation is non-existent
as far as I could find).
Do http://tomcat.apache.org/tomcat-6.0-doc/ssi-howto.html and
http://httpd.apache.org/docs/current/howto/ssi.html#basic count as
non-existent? Or were you thinking of more involved documentation?
Yes, I read both of these documents, as well as a bunch of others! ;-)  
The documentation was not detailed enough for me to grok and solve this 
problem on my own....
Anywise, what I have working, works so long as the<!--#include
virtual="somefile.html" -->  is in a .shtml file, but this will be
unacceptable. I need this feature to also work from inside normal .html
and .htm as well as .jsp files as that is what our users will expect. I
have fooled around with the filter-mapping segment in the server's
web.xml file but so far no joy in finding a solution.
You will have to use filter mapping in order to post-process your .jsp
and other dynamic pages: a servlet can't be wrapped around another
servlet (such as the JSPServlet, which you don't have to map yourself)
for this kind of thing. So, stick with the filter.
OK, I kinda gathered that a filter is applied to everything served up by 
the server, before servlets are invoked... So it makes sense that a 
filter has to be used (if I am understanding this correctly) for JSP 
Servlets....
Searches (lots of em!) on the internet have not provided me with an
answer, though I have gotten hints that it is doable.  Could some kind
guru help me grok this and guide me to the light?  Many thanks in
advance....
What is the complete configuration for your<filter>  and
<filter-mapping>  for the aforementioned filter? It should be as simple
as setting up multiple<url-pattern>s for the URL patterns that you want
to have run through the SSI filter.
Umm, well let me include that part of the web.xml file, as it stands at 
the moment, here..  Note: Commented out pieces are from my attempts to 
get this working, so you can see some of the things that I have tried.....

<filter>
<filter-name>ssi</filter-name>
<filter-class>
          org.apache.catalina.ssi.SSIFilter
</filter-class>
<init-param>
<param-name>contentType</param-name>
<param-value>text/x-server-parsed-html(;.*)?</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>expires</param-name>
<param-value>666</param-value>
</init-param>
<init-param>
<param-name>isVirtualWebappRelative</param-name>
<param-value>0</param-value>
</init-param>
</filter>



<!-- ==================== Built In Filter Mappings 
====================== -->

<!-- The mapping for the SSI Filter -->

<filter-mapping>
<filter-name>ssi</filter-name>
<url-pattern>*</url-pattern>
</filter-mapping>

<!--
<filter-mapping>
<filter-name>ssi</filter-name>
<url-pattern>*.shtml</url-pattern>
</filter-mapping>
-->
<!--
<filter-mapping>
<filter-name>ssi</filter-name>
<url-pattern>*.html</url-pattern>
</filter-mapping>
-->
<!--
<filter-mapping>
<filter-name>ssi</filter-name>
<url-pattern>*.shtml</url-pattern>
<url-pattern>*.html</url-pattern>
</filter-mapping>
-->
<!--
<filter-mapping>
<filter-name>ssi</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
-->





Note that you should be able to set up SSI in a single webapp instead of
modifying the conf/web.xml file as described in the SSI documentation. I
find this cleaner, as you will only end up making SSI available in a
specific webapp instead of across all webapps deployed onto the server.
The<filter-mapping>  itself should definitely only be included in your
webapp's META-INF/web.xml file.
Not sure I fully understand you here, so please forgive my lack of 
understanding... I do want this SSI feature to be available across all 
the webapps deployed on our server. As I mentioned previously, we want 
to provide some services that users can access, by simply including a 
server side include statement that will effectively include these 
features on their web pages.  And like I mentioned, I have gotten this 
working in one sense, but the include statement only works for me from 
within .shtml files and I need it to work from within .html, .htm, and 
.jsp files.

   Marc...


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