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Posted to users@tomcat.apache.org by Jacob Kjome <ho...@visi.com> on 2002/05/07 18:38:12 UTC
Re[4]: Tomcat redirect
Hello joshua,
Well, take a look at the form action:
action="/servlet/CatalogServlet"
This isn't even a servlet to servlet call. This is a browser to
servlet call. On top of that, you are telling the form to be
sumbmitted to http://our.server.com:8080/servlet/CatalogServlet
This tells Tomcat to look in the ROOT context and find a servlet
called "CatalogServlet". However, you want to look in the "spike"
context.
Just change your action to the following:
Assuming you are at a web address that looks like:
http://our.server.com/spike/servlet/SomeServlet
action="CatalogServlet"
will be translated by the browser as a request to:
http://our.server.com/spike/servlet/CatalogServlet
or
if you don't want to count on being in the /spike/servlet path already
like above, then provide a hard path off the root of the web server:
action="/spike/servlet/CatalogServlet"
Which translates to the following no matter what your current URL is:
http://our.server.com/spike/servlet/CatalogServlet
If you are wondering how to dynamically write this link in your
servlet, just do:
req.getServletContext() + "/servlet/CatalogServlet"
That will translate to:
"/spike/servlet/CatalogServet" which is what you want.
Note, it also works if you are using the ROOT context since
req.getServletContext() will return "/" in that case.
Does that help?
Jake
Tuesday, May 07, 2002, 11:16:35 AM, you wrote:
jw> Yeah, I figured that out a bit later. The problem seems to be that Tomcat is
jw> just ignoring the call to /servlet/Whatever.
jw> The situation is like this, I'm trying to get as specific as possible now.
jw> The code looks like this:
jw> <form name=insertForm action=/servlet/CatalogServlet onSubmit="return
validate()">>
jw> And if someone clicks on that button they get a 404 and Tomcat returns the
jw> error that it can't find /servlet/CatalogServlet. This exists without any
jw> <context> stuff setup in server.xml. The problem is that in the original
jw> call to the original servlet we have apache redirecting the request to
jw> http://our.server.com:8080/spike/servlet/OurServlet and when OurServlet
jw> calls OtherServlet via the code above it tries to locate it on
jw> http://our.server.com:8080/servlet/OtherServlet and that doesn't work. It
jw> has to have the /spike/ in there. So... Any idea how I can do that? One of
jw> the issues is that I can't change the code in the servlet itself (Otherwise
jw> fixing this would be trivial).
jw> Josh
jw> ----- Original Message -----
jw> From: "Jacob Kjome" <ho...@visi.com>
jw> To: "Tomcat Users List" <to...@jakarta.apache.org>
jw> Sent: Tuesday, May 07, 2002 12:01 PM
jw> Subject: Re[2]: Tomcat redirect
>> Hello joshua,
>>
>> Well, actually, all you've done here is specify a context called
>> "servlet" which has it's docbase sitting on the file system as
>> "/spike/servlet". This would assume that you are on a Unix system and
>> you have a directory called "spike" off the root of your sytem with a
>> directory called "servlet" inside that.
>>
>> In this case, the address to your webapp would be:
>>
>> http://myserver.com/servlet/
>>
>> However, I would avoid calling your context "servlet" because I think
>> it will conflict with the default servlet mapping that Tomcat provides
>> for you. In fact I think you are confusing the /servlet/* mapping that
jw> Tomcat provides
>> for all webapps via its default web.xml with setting up a context.
>>
>> Let's assume that you place your new context in Tomcat's 'webapps"
>> directory and it is called "myservlets". You can either not bother
>> explicitly stating the <Context> for this webapp in the Server.xml and
>> let Tomcat create a default one for it, or you can go ahead and
>> specify it like this:
>>
>> <Context path="/myservlets" docBase="myservlets">
>>
>> The path says that requests to http://myserver.com/myservlets refer to
>> a Tomcat-served Servlet context.
>>
>> The docBase says where the context's directory exists on the file
>> system. Here, we are saying that it exists in the current directory
>> (relative the webapps directory). You could also put this elsewhere
>> on your file system, but you must then provide a path relative to
>> webapps directory by saying something like "../../../../myservlets"
>> which says "myservlets" is located 4 directories back from wherever
>> the "webapps" directory exists or you can specify a hardcoded path
>> like "C:\myapps\myservlets" on windows or "/myapps/myservlets" on
>> Unix.
>>
>> Now with that set up, calling your servlet that redirects to another
>> servlet might go something like this:
>>
>> http://myserver.com/myservlets/servlet/MyRedirectServlet
>>
>> which might redirect to another servlet "MyRedirectResultServlet"
>>
>> You'd have to make sure that the redirection goes to
>> "/servlet/MyRedirectResultServlet" in order for Tomcat to catch this
>> request as a request to this other servlet.
>>
>> Did that answer the question or am I missing something? Bottom line,
>> rename your context to something other than "servlet" to avoid
>> confusion.
>>
>> Jake
>>
>> Tuesday, May 07, 2002, 10:08:41 AM, you wrote:
>>
>> jw> I was hoping of something within the Tomcat configuration itself since
jw> we
>> jw> don't use an index.jsp file. To be more specific about my problem,
jw> Whenever
>> jw> a servlet calls another servlet in Tomcat it isn't intercepting the
>> jw> /servlet/ directive and replacing it with /spike/servlet/ which is
jw> what it
>> jw> should be doing. Perhaps I'm overlooking something obvious in the
>> jw> configuration that will do this, but I've tried putting a
>> jw> <Host name="DEFAULT" >
>> jw> <Context path="/servlet"
>> jw> docBase="/spike/servlet" />
>> jw> </Host>
>>
>> jw> Entry in the server.xml file, but that didn't seem to do it either...
>> jw> Someone smack me with a clue stick and tell me what I'm doing wrong?
>>
>> jw> Josh
>> jw> ----- Original Message -----
>> jw> From: "Oki DZ" <ok...@pindad.com>
>> jw> To: "Tomcat Users List" <to...@jakarta.apache.org>
>> jw> Sent: Monday, May 06, 2002 8:17 PM
>> jw> Subject: Re: Tomcat redirect
>>
>>
>> jw> On 05/07 04:19 joshua wentworth wrote:
>> >> I am trying to have Tomcat redirect certain requests to other
jw> applications
>> >> or other sites. But I can't find anything in the documentation or in
jw> any
>> jw> of
>> >> the messageboards about any kind of forward or redirect function in
>> jw> Tomcat.
>> >> Is there such a function, and if so where can I find documentation on
jw> it?
>>
>> jw> You can use the following in my index.jsp, so that the main page will
jw> be
>> jw> redirected to some other location: <%
>> jw> response.sendRedirect(response.encodeRedirectURL("<new URL>"));
>> %>>
>>
>> jw> Oki
>>
>>
>>
>> jw> --
>> jw> To unsubscribe, e-mail:
>> jw> <ma...@jakarta.apache.org>
>> jw> For additional commands, e-mail:
>> jw> <ma...@jakarta.apache.org>
>>
>>
>> jw> --
>> jw> To unsubscribe, e-mail:
jw> <ma...@jakarta.apache.org>
>> jw> For additional commands, e-mail:
jw> <ma...@jakarta.apache.org>
>>
>>
>>
>> --
>> Best regards,
>> Jacob mailto:hoju@visi.com
>>
>>
>> --
>> To unsubscribe, e-mail:
jw> <ma...@jakarta.apache.org>
>> For additional commands, e-mail:
jw> <ma...@jakarta.apache.org>
>>
jw> --
jw> To unsubscribe, e-mail: <ma...@jakarta.apache.org>
jw> For additional commands, e-mail: <ma...@jakarta.apache.org>
--
Best regards,
Jacob mailto:hoju@visi.com
--
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Re: Re[4]: Tomcat redirect
Posted by joshua wentworth <jo...@voquette.com>.
Thanks, I went ahead and told the developers that they were just going to
have to fix their code to be correct. Ideally we didn't want to change the
code, we just wanted to kludge tomcat to work with the original call
(backwards compatibility issue with the code). Thanks again.
Josh
----- Original Message -----
From: "Jacob Kjome" <ho...@visi.com>
To: "Tomcat Users List" <to...@jakarta.apache.org>
Sent: Tuesday, May 07, 2002 12:38 PM
Subject: Re[4]: Tomcat redirect
> Hello joshua,
>
> Well, take a look at the form action:
>
> action="/servlet/CatalogServlet"
>
> This isn't even a servlet to servlet call. This is a browser to
> servlet call. On top of that, you are telling the form to be
> sumbmitted to http://our.server.com:8080/servlet/CatalogServlet
>
> This tells Tomcat to look in the ROOT context and find a servlet
> called "CatalogServlet". However, you want to look in the "spike"
> context.
>
> Just change your action to the following:
>
> Assuming you are at a web address that looks like:
>
> http://our.server.com/spike/servlet/SomeServlet
>
> action="CatalogServlet"
>
> will be translated by the browser as a request to:
>
> http://our.server.com/spike/servlet/CatalogServlet
>
> or
>
> if you don't want to count on being in the /spike/servlet path already
> like above, then provide a hard path off the root of the web server:
>
> action="/spike/servlet/CatalogServlet"
>
> Which translates to the following no matter what your current URL is:
>
> http://our.server.com/spike/servlet/CatalogServlet
>
>
> If you are wondering how to dynamically write this link in your
> servlet, just do:
>
> req.getServletContext() + "/servlet/CatalogServlet"
>
> That will translate to:
>
> "/spike/servlet/CatalogServet" which is what you want.
>
> Note, it also works if you are using the ROOT context since
> req.getServletContext() will return "/" in that case.
>
> Does that help?
>
> Jake
>
>
> Tuesday, May 07, 2002, 11:16:35 AM, you wrote:
>
> jw> Yeah, I figured that out a bit later. The problem seems to be that
Tomcat is
> jw> just ignoring the call to /servlet/Whatever.
> jw> The situation is like this, I'm trying to get as specific as possible
now.
> jw> The code looks like this:
> jw> <form name=insertForm action=/servlet/CatalogServlet onSubmit="return
> validate()">>
>
> jw> And if someone clicks on that button they get a 404 and Tomcat returns
the
> jw> error that it can't find /servlet/CatalogServlet. This exists without
any
> jw> <context> stuff setup in server.xml. The problem is that in the
original
> jw> call to the original servlet we have apache redirecting the request to
> jw> http://our.server.com:8080/spike/servlet/OurServlet and when
OurServlet
> jw> calls OtherServlet via the code above it tries to locate it on
> jw> http://our.server.com:8080/servlet/OtherServlet and that doesn't work.
It
> jw> has to have the /spike/ in there. So... Any idea how I can do that?
One of
> jw> the issues is that I can't change the code in the servlet itself
(Otherwise
> jw> fixing this would be trivial).
>
> jw> Josh
>
> jw> ----- Original Message -----
> jw> From: "Jacob Kjome" <ho...@visi.com>
> jw> To: "Tomcat Users List" <to...@jakarta.apache.org>
> jw> Sent: Tuesday, May 07, 2002 12:01 PM
> jw> Subject: Re[2]: Tomcat redirect
>
>
> >> Hello joshua,
> >>
> >> Well, actually, all you've done here is specify a context called
> >> "servlet" which has it's docbase sitting on the file system as
> >> "/spike/servlet". This would assume that you are on a Unix system and
> >> you have a directory called "spike" off the root of your sytem with a
> >> directory called "servlet" inside that.
> >>
> >> In this case, the address to your webapp would be:
> >>
> >> http://myserver.com/servlet/
> >>
> >> However, I would avoid calling your context "servlet" because I think
> >> it will conflict with the default servlet mapping that Tomcat provides
> >> for you. In fact I think you are confusing the /servlet/* mapping that
> jw> Tomcat provides
> >> for all webapps via its default web.xml with setting up a context.
> >>
> >> Let's assume that you place your new context in Tomcat's 'webapps"
> >> directory and it is called "myservlets". You can either not bother
> >> explicitly stating the <Context> for this webapp in the Server.xml and
> >> let Tomcat create a default one for it, or you can go ahead and
> >> specify it like this:
> >>
> >> <Context path="/myservlets" docBase="myservlets">
> >>
> >> The path says that requests to http://myserver.com/myservlets refer to
> >> a Tomcat-served Servlet context.
> >>
> >> The docBase says where the context's directory exists on the file
> >> system. Here, we are saying that it exists in the current directory
> >> (relative the webapps directory). You could also put this elsewhere
> >> on your file system, but you must then provide a path relative to
> >> webapps directory by saying something like "../../../../myservlets"
> >> which says "myservlets" is located 4 directories back from wherever
> >> the "webapps" directory exists or you can specify a hardcoded path
> >> like "C:\myapps\myservlets" on windows or "/myapps/myservlets" on
> >> Unix.
> >>
> >> Now with that set up, calling your servlet that redirects to another
> >> servlet might go something like this:
> >>
> >> http://myserver.com/myservlets/servlet/MyRedirectServlet
> >>
> >> which might redirect to another servlet "MyRedirectResultServlet"
> >>
> >> You'd have to make sure that the redirection goes to
> >> "/servlet/MyRedirectResultServlet" in order for Tomcat to catch this
> >> request as a request to this other servlet.
> >>
> >> Did that answer the question or am I missing something? Bottom line,
> >> rename your context to something other than "servlet" to avoid
> >> confusion.
> >>
> >> Jake
> >>
> >> Tuesday, May 07, 2002, 10:08:41 AM, you wrote:
> >>
> >> jw> I was hoping of something within the Tomcat configuration itself
since
> jw> we
> >> jw> don't use an index.jsp file. To be more specific about my problem,
> jw> Whenever
> >> jw> a servlet calls another servlet in Tomcat it isn't intercepting the
> >> jw> /servlet/ directive and replacing it with /spike/servlet/ which is
> jw> what it
> >> jw> should be doing. Perhaps I'm overlooking something obvious in the
> >> jw> configuration that will do this, but I've tried putting a
> >> jw> <Host name="DEFAULT" >
> >> jw> <Context path="/servlet"
> >> jw> docBase="/spike/servlet" />
> >> jw> </Host>
> >>
> >> jw> Entry in the server.xml file, but that didn't seem to do it
either...
> >> jw> Someone smack me with a clue stick and tell me what I'm doing
wrong?
> >>
> >> jw> Josh
> >> jw> ----- Original Message -----
> >> jw> From: "Oki DZ" <ok...@pindad.com>
> >> jw> To: "Tomcat Users List" <to...@jakarta.apache.org>
> >> jw> Sent: Monday, May 06, 2002 8:17 PM
> >> jw> Subject: Re: Tomcat redirect
> >>
> >>
> >> jw> On 05/07 04:19 joshua wentworth wrote:
> >> >> I am trying to have Tomcat redirect certain requests to other
> jw> applications
> >> >> or other sites. But I can't find anything in the documentation or in
> jw> any
> >> jw> of
> >> >> the messageboards about any kind of forward or redirect function in
> >> jw> Tomcat.
> >> >> Is there such a function, and if so where can I find documentation
on
> jw> it?
> >>
> >> jw> You can use the following in my index.jsp, so that the main page
will
> jw> be
> >> jw> redirected to some other location: <%
> >> jw> response.sendRedirect(response.encodeRedirectURL("<new URL>"));
> >> %>>
> >>
> >> jw> Oki
> >>
> >>
> >>
> >> jw> --
> >> jw> To unsubscribe, e-mail:
> >> jw> <ma...@jakarta.apache.org>
> >> jw> For additional commands, e-mail:
> >> jw> <ma...@jakarta.apache.org>
> >>
> >>
> >> jw> --
> >> jw> To unsubscribe, e-mail:
> jw> <ma...@jakarta.apache.org>
> >> jw> For additional commands, e-mail:
> jw> <ma...@jakarta.apache.org>
> >>
> >>
> >>
> >> --
> >> Best regards,
> >> Jacob mailto:hoju@visi.com
> >>
> >>
> >> --
> >> To unsubscribe, e-mail:
> jw> <ma...@jakarta.apache.org>
> >> For additional commands, e-mail:
> jw> <ma...@jakarta.apache.org>
> >>
>
> jw> --
> jw> To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
> jw> For additional commands, e-mail:
<ma...@jakarta.apache.org>
>
>
>
> --
> Best regards,
> Jacob mailto:hoju@visi.com
>
>
> --
> To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
> For additional commands, e-mail:
<ma...@jakarta.apache.org>
>
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
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