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From Jan Labanowski <...@osc.edu>
Subject Re: Aliases/Rewrites (was: ajp12 vs ajp13 & mod_jk.conf-auto
Date Fri, 16 Feb 2001 05:33:52 GMT
It is my (and others) experience that mod_jk has to be loaded BEFORE
mod_rewrite for it to act responsibly. In your case the mod_rewrite is 
linked statically, i.e., loaded before mod_jk. I would suggest to
make both mod_jk and mod_rewrite DSO, and load/add module mod_jk before
mod_rewrite. Remember to comment out the 
  # LoadModule jk_module libexec/mod_jk.so      
in mod_jk.conf

Jan


On Thu, 15 Feb 2001, Mel Martinez wrote:

> Filip,
> 
> --- Filip Hanik <filip@filip.net> wrote:
> > > Now, if I could just get someone to tell me why
> > apache
> > > Alias and Rewrites are not working with tomcat...
> > 
> > tell us what you are trying to do and send us some
> > sample config files and
> > how your environment is setup. is becomes much
> > easier than to answer the
> > question above, because alias works very well for me
> > :)
> > 
> 
> Well, actually, I've twice posted detailed
> descriptions of what I'm trying to accomplish on this
> topic and gotten zero replies, but here goes another
> attempt...
> 
> I'm using Apache 1.3.14 and tomcat 3.2.1 with
> mod_jk.c.  I don't know if the latter is the 'latest'
> version of mod_jk.c - I grabbed it from the tomcat
> download site two weeks ago.  I am running this on
> WinNT using downloaded binary versions of the relevant
> software.
> 
> I have setup my application ("myapp") as a directory
> inside the webapps/ directory, complete with WEB-INF
> subdirectory and such.
> 
> I have apache configured to apply an alias or a
> rewrite rule to a reqest:
> #--------------
> <IfModule !mod_rewrite.c>
> LoadModule rewrite_module
> n:/opt/local/apache/modules/ApacheModuleRewrite.dll
> </IfModule>
> 
> RewriteEngine On
> RewriteLog log/apache_logs/rewrites.log
> RewriteLogLevel 9
> RewriteOptions inherit
> RewriteRule ^/myapp/(.*)/common/(.*) /myapp/common/$2
> #-------------
> 
> 
> I can tell from the rewrites.log that it is indeed
> getting applied:
> 
>  (2) init rewrite engine with requested uri
> /myapp/folder1/common/mypage.jsp
>  (3) applying pattern '^/myapp/(.*)/common/(.*)' to
> uri '/myapp/folder1/common/mypage.jsp'
>  (2) rewrite /myapp/folder1/common/mypage.jsp ->
> /myapp/common/mypage.jsp
>  (2) local path result: /myapp/common/mypage.jsp
>  (1) go-ahead with /myapp/common/mypage.jsp [OK]
> 
> The idea here is simple: the request
> 
> /myapp/folder1/common/mypage.jsp
> 
> should result in a request for
> 
> /myapp/common/mypage.jsp
> 
> The rewrite rule works great.  This works great for
> static stuff (i.e. html) served up by Apache. 
> 
> The *problem* is that Tomcat is not getting the
> translated request, it is getting the original one:
> 
> /myapp/folder1/common/mypage.jsp
>  
> Since no file in that path actually exists, naturally
> it returns a file not found error.  Tomcat DOES
> happily find, compile and execute requests for
> servlets and jsp pages that are in paths that do exist
> such as
> 
> /myapp/folder1/myother.jsp
> 
> I have apache configured to send requests to tomcat
> via ajp13 by including mod_jk.conf-auto just after the
> above rewrite rule:
> 
> # include configuration for tomcat servlet engine:
> #
> Include n:/opt/demo/conf/mod_jk.conf-auto
> #
> 
> I've configured server.xml very minimally, no custom
> contexts or anything.  About the only thing changed
> here is I've enabled ajp13 and then setup
> workers.properties to map requests to it.  I doubt any
> of this is relevant because I see the exact same
> behavior even with 'raw' server.xml and
> worker.properties files.
> 
> Note that I get the same behavior if I use an Alias
> instead of a rewrite:
> 
> #--------------
> Alias (.*)/myapp/(.*)/common/(.*) $1/myapp/common/$3
> #--------------
> 
> This rewrites static requests served by Apache, but
> just like with rewrites, gets ignored by tomcat.
> 
> That's pretty much it.
> 
> Any suggestions as to what is (or is not) going on?
> 
> Basically, what I want to happen is that, after a
> rewrite rule has been applied, that Tomcat should be
> processing the modified URL, not the original.
> 
> Thanks in advance for any help!
> 
> Mel
> 
> 
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Jan K. Labanowski            |    phone: 614-292-9279,  FAX: 614-292-7168
Ohio Supercomputer Center    |    Internet: jkl@osc.edu 
1224 Kinnear Rd,             |    http://www.ccl.net/chemistry.html
Columbus, OH 43212-1163      |    http://www.osc.edu/


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