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Posted to user@struts.apache.org by Richard Wallace <rw...@thewallacepack.net> on 2006/01/22 07:01:01 UTC

[shale] Shale-Clay and jsp:forward

Hello again,

I'm running into a problem getting my /index.jsp to forward to a Clay 
HTML page.  The index.jsp page just contains the following:

<jsp:forward page="default.html"/>


When I try to hit it with the URL 
http://localhost:8080/shale-clay-example/ I get a 404 saying that 
default.jsp cannot be found.  If I goto 
http://localhost:8080/shale-clay-example/default.html it works just fine.

Can I not forward to the default page like this?  I also tried setting 
default.html as the welcome-file in the web.xml, but that didn't work (I 
didn't really expect it to).  Any idea what the problem is?

Thanks,
Rich

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Re: [shale] Shale-Clay and jsp:forward

Posted by Richard Wallace <rw...@thewallacepack.net>.

Thanks Craig, that was exactly the right solution.  I'm using Tomcat 
5.5.12 and adding the dispather elements to the shale filter-mapping did 
the trick perfectly.

Thanks again,
Rich

Craig McClanahan wrote:
> On 1/21/06, Richard Wallace <rw...@thewallacepack.net> wrote:
>   
>> Hello again,
>>
>> I'm running into a problem getting my /index.jsp to forward to a Clay
>> HTML page.  The index.jsp page just contains the following:
>>
>> <jsp:forward page="default.html"/>
>>
>>
>> When I try to hit it with the URL
>> http://localhost:8080/shale-clay-example/ I get a 404 saying that
>> default.jsp cannot be found.  If I goto
>> http://localhost:8080/shale-clay-example/default.html it works just fine.
>>
>> Can I not forward to the default page like this?  I also tried setting
>> default.html as the welcome-file in the web.xml, but that didn't work (I
>> didn't really expect it to).  Any idea what the problem is?
>>     
>
>
> What container are you running on?  In particular, is it based on Servlet
> 2.3 or 2.4?
>
> The reason this is important is that a RequestDispatcher.forward() (which is
> what a <jsp:forward> does under the covers) does *not* necessarily go
> through the entire lifecycle that an HTTP request to the forwarded-to URL
> would go to.  In the particular case here, it's important that a request for
> a Clay-served view has to go through the Shale filter to do the approprate
> processing.
>
> This is impossible in a Servlet 2.3 environment, because filters are defined
> to *only* be applied on the original request, not on forwards.  In a Servlet
> 2.4 environment (such as Tomcat 5.x), this remains the default ... but you
> can ask for filters to be applied by modifying your filter mapping
> declaration:
>
>     <filter-mapping>
>         <filter-name>shale</filter-name>
>         <url-pattern>/*</url-pattern>
>         <dispatcher>REQUEST</dispatcher>
>         <dispatcher>FORWARD</dispatcher>
>     </filter-mapping>
>
> This changes the default behavior (which only applies filters to requests)
> to apply the Shale filter to both requests and forwards.  This *should*
> address the use case you are describing.
>
> Thanks,
>   
>> Rich
>>     
>
>
> Craig
>
>   


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Re: [shale] Shale-Clay and jsp:forward

Posted by Craig McClanahan <cr...@apache.org>.

On 1/21/06, Richard Wallace <rw...@thewallacepack.net> wrote:
>
> Hello again,
>
> I'm running into a problem getting my /index.jsp to forward to a Clay
> HTML page.  The index.jsp page just contains the following:
>
> <jsp:forward page="default.html"/>
>
>
> When I try to hit it with the URL
> http://localhost:8080/shale-clay-example/ I get a 404 saying that
> default.jsp cannot be found.  If I goto
> http://localhost:8080/shale-clay-example/default.html it works just fine.
>
> Can I not forward to the default page like this?  I also tried setting
> default.html as the welcome-file in the web.xml, but that didn't work (I
> didn't really expect it to).  Any idea what the problem is?

What container are you running on?  In particular, is it based on Servlet
2.3 or 2.4?

The reason this is important is that a RequestDispatcher.forward() (which is
what a <jsp:forward> does under the covers) does *not* necessarily go
through the entire lifecycle that an HTTP request to the forwarded-to URL
would go to.  In the particular case here, it's important that a request for
a Clay-served view has to go through the Shale filter to do the approprate
processing.

This is impossible in a Servlet 2.3 environment, because filters are defined
to *only* be applied on the original request, not on forwards.  In a Servlet
2.4 environment (such as Tomcat 5.x), this remains the default ... but you
can ask for filters to be applied by modifying your filter mapping
declaration:

    <filter-mapping>
        <filter-name>shale</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
    </filter-mapping>

This changes the default behavior (which only applies filters to requests)
to apply the Shale filter to both requests and forwards.  This *should*
address the use case you are describing.

Thanks,
> Rich

Craig