Re: Is it possible to intercept all requests and be serviced by a ser vlet?
You can use a Valve. Or you can use a Filter configured in $CATALINA_HOME/conf/server.xml and the class would live in the common/ classloader -Tim Chippada, Sreeni wrote: Hi, I am using Tomcat 5. I need all the requests be serviced by a particular servlet irrespective of the web apps deployed. Is there a way to do it? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Is it possible to intercept all requests and be serviced by a ser vlet?
Hi Tim, Thanks for your reply. I know how to create a valve. But I do not know how to execute a servlet from a valve. I will be glad if you can you can tell me how to ro point me to appropriate resources. Also, I do not know how to configure the filters in the server.xml. Appreciate any help. Thanks, Sreeni -Original Message- From: Tim Funk [mailto:[EMAIL PROTECTED] Sent: Tuesday, May 18, 2004 7:50 AM To: Tomcat Users List Subject: Re: Is it possible to intercept all requests and be serviced by a ser vlet? You can use a Valve. Or you can use a Filter configured in $CATALINA_HOME/conf/server.xml and the class would live in the common/ classloader -Tim Chippada, Sreeni wrote: Hi, I am using Tomcat 5. I need all the requests be serviced by a particular servlet irrespective of the web apps deployed. Is there a way to do it? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is it possible to intercept all requests and be serviced by a ser vlet?
It sounds like using a Filter would be easier. With a filter - you can use
the Servlet API to get a Dispatcher for the servlet you wish to call. For
example, this filter reroute all requests to FooServlet:
package more.cowbell;
import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.FilterChain;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.ServletException;
import java.io.IOException;
public class ReRouteFilter implements Filter {
public void init(FilterConfig filterConfig) throws ServletException {
;
}
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
request.getRequestDispatcher(/FooServlet).forward(request, response);
}
public void destroy() {
;
}
}
---
Then in $CATALINA_HOME/conf/web.xml
filter
filter-nameReRoute Filter/filter-name
filter-classmore.cowbell.ReRouteFilter/filter-class
/filter
!-- Trap everything going to the default servlet--
filter-mapping
filter-nameReRoute Filter/filter-name
servlet-namedefault/servlet-name
/filter-mapping
!-- Trap by file extension html--
filter-mapping
filter-nameReRoute Filter/filter-name
url-pattern*.html/url-pattern
/filter-mapping
---
-Tim
Chippada, Sreeni wrote:
Hi Tim,
Thanks for your reply.
I know how to create a valve. But I do not know how to execute a
servlet from a valve. I will be glad if you can you can tell me how to ro
point me to appropriate resources.
Also, I do not know how to configure the filters in the server.xml.
Appreciate any help.
Thanks,
Sreeni
-Original Message-
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 18, 2004 7:50 AM
To: Tomcat Users List
Subject: Re: Is it possible to intercept all requests and be serviced by a
ser vlet?
You can use a Valve.
Or you can use a Filter configured in $CATALINA_HOME/conf/server.xml and the
class would live in the common/ classloader
-Tim
Chippada, Sreeni wrote:
Hi,
I am using Tomcat 5. I need all the requests be serviced by a
particular servlet irrespective of the web apps deployed. Is there a way
to
do it?
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Is it possible to intercept all requests and be serviced by a ser vlet?
That will solve my issue.
Thank you very much,
Sreeni
-Original Message-
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 18, 2004 10:18 AM
To: Tomcat Users List
Subject: Re: Is it possible to intercept all requests and be serviced by a
ser vlet?
It sounds like using a Filter would be easier. With a filter - you can use
the Servlet API to get a Dispatcher for the servlet you wish to call. For
example, this filter reroute all requests to FooServlet:
package more.cowbell;
import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.FilterChain;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.ServletException;
import java.io.IOException;
public class ReRouteFilter implements Filter {
public void init(FilterConfig filterConfig) throws ServletException {
;
}
public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
request.getRequestDispatcher(/FooServlet).forward(request,
response);
}
public void destroy() {
;
}
}
---
Then in $CATALINA_HOME/conf/web.xml
filter
filter-nameReRoute Filter/filter-name
filter-classmore.cowbell.ReRouteFilter/filter-class
/filter
!-- Trap everything going to the default servlet--
filter-mapping
filter-nameReRoute Filter/filter-name
servlet-namedefault/servlet-name
/filter-mapping
!-- Trap by file extension html--
filter-mapping
filter-nameReRoute Filter/filter-name
url-pattern*.html/url-pattern
/filter-mapping
---
-Tim
Chippada, Sreeni wrote:
Hi Tim,
Thanks for your reply.
I know how to create a valve. But I do not know how to execute a
servlet from a valve. I will be glad if you can you can tell me how to ro
point me to appropriate resources.
Also, I do not know how to configure the filters in the server.xml.
Appreciate any help.
Thanks,
Sreeni
-Original Message-
From: Tim Funk [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 18, 2004 7:50 AM
To: Tomcat Users List
Subject: Re: Is it possible to intercept all requests and be serviced by a
ser vlet?
You can use a Valve.
Or you can use a Filter configured in $CATALINA_HOME/conf/server.xml and
the
class would live in the common/ classloader
-Tim
Chippada, Sreeni wrote:
Hi,
I am using Tomcat 5. I need all the requests be serviced by a
particular servlet irrespective of the web apps deployed. Is there a way
to
do it?
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Is it possible to intercept all requests and be serviced by a ser vlet?
Hi, I am using Tomcat 5. I need all the requests be serviced by a particular servlet irrespective of the web apps deployed. Is there a way to do it? Thanks, Sreeni - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is it possible to intercept all requests and be serviced by a ser vlet?
On Mon, May 17, 2004 at 10:19:29PM -0400, Chippada, Sreeni wrote:
: I am using Tomcat 5. I need all the requests be serviced by a
: particular servlet irrespective of the web apps deployed. Is there a way to
: do it?
Have you tried putting it in the global web.xml? Not
{context}/WEB-INF/web.xml
I mean the one in
{tomcat install}/conf/web.xml
What that means as far as classloading issues, and whether all webapps
will see the *same instance* of that servlet class, I can't tell you...
but I'm sure that's in the docs.
A more portable solution would be to just include that same servlet in
each webapp, but you know your app/setup better than I...
-QM
--
software -- http://www.brandxdev.net
tech news -- http://www.RoarNetworX.com
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