Force All Requests to a single servlet

[Jim Willeke <jw...@gmail.com>]

I have moved a sever from port 9080 to using another tomcat instance
(on port 80) and have renamed the sites.

I want to intercept all the requests to the 9080 port and analyze the
incoming URL and redirect to the new location(s).

I can write the servlet, but have not figured out how to force every
incoming request to use the servlet.
I never want a request to get a "Not found error"

Thanks -jim

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RE: Force All Requests to a single servlet

["Caldarale, Charles R" <Ch...@unisys.com>]

> From: Jim Willeke [mailto:jwilleke@gmail.com] 
> Subject: Force All Requests to a single servlet
> 
> I want to intercept all the requests to the 9080 port and analyze the
> incoming URL and redirect to the new location(s).

You didn't bother to tell us what version of Tomcat you're using, so the
links below are for the current one; adjust as needed.

You might want to consider a Valve rather than a servlet, since you can
configure a valve at the <Engine> level.  One of Tomcat's built-in
valves could be a starting point:
http://tomcat.apache.org/tomcat-6.0-doc/config/valve.html

The related API doc is here:
http://tomcat.apache.org/tomcat-6.0-doc/api/org/apache/catalina/valves/p
ackage-summary.html

 - Chuck


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Re: Force All Requests to a single servlet

[Christopher Schultz <ch...@christopherschultz.net>]

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Jim,

Jim Willeke wrote:
| I have moved a sever from port 9080 to using another tomcat instance
| (on port 80) and have renamed the sites.
|
| I want to intercept all the requests to the 9080 port and analyze the
| incoming URL and redirect to the new location(s).

You may have simpler alternatives:

1. Use your OS to forward port 9080 to port 80.
2. Run a second <Connector> on port 9080 on the same server.
~   No other configuration should be necessary.
3. If you are running a web server in front of Tomcat:
~   a. Use RedirectPermanent (the browser will do your work for you)
~   b. Listen on 9080 and use the same mappings to Tomcat
~   c. Use mod_rewrite or mod_proxy to proxy the traffic between ports

Also, when you say "redirect", do you really mean to respond to the
request with an HTTP 3xx response? Or, do you mean "make it go to the
right place"?

| I can write the servlet, but have not figured out how to force every
| incoming request to use the servlet.
| I never want a request to get a "Not found error"

If this is what you really want to do, you can always just map
everything to your one servlet:

<servlet-mapping>
~   <servlet-name>myRedirectorServlet</servlet-name>
~   <url-pattern>/*</url-pattern>
</servlet-mapping>

Note that you'll have to deploy this as the ROOT application if you want
to catch /everything/.

- -chris

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