Filter, action or even a standalone security component is the right way to go.
No need to try the check in custom tag, since it will try to forward the user to a log in page, it will not be working inside a tile anyway. Again, those examples are killing me.
From: "Zheng, Gang" <[EMAIL PROTECTED]> Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]> To: 'Struts Users Mailing List' <[EMAIL PROTECTED]> Subject: RE: tiles and logic:forward Date: Tue, 11 Mar 2003 14:59:36 -0500
I agree with the Filter and Action approach.
If you do want a check login custom tag, look at the sample application that
comes with the struts distribution. It is very simple and you should need to
just modify a couple lines to check your own login.
- GZ
-----Original Message----- From: David Graham [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2003 2:49 PM To: [EMAIL PROTECTED] Subject: RE: tiles and logic:forward
You really shouldn't be using the forward or redirect tags anyways. I
consider that business logic that belongs in java classes. A checklogin tag
is also not a good idea because then you have to remember to place it in every page. The authentication code should be in a Filter or Action.
David
>From: "Laker Shen" <[EMAIL PROTECTED]>
>Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: RE: tiles and logic:forward
>Date: Tue, 11 Mar 2003 19:44:00 +0000
>
>Understand. I think that's the case. Thanks.
>
>But, still, it may cause a lot of extra troubles. I may need to create
>an
>extra action to handle those forward logic.
>
>In Ted's Blueprinting Struts, he suggested to create a CheckLogin
>custom
>tag. To use tiles with the tag, either the check login logic is very simple
>and we can put the tag in the layout.jsp or the check login tag needs to be
>very smart and handle all the logic based on dynamic user information.
>
>Still try to find a way around this.
>
>>From: "Zheng, Gang" <[EMAIL PROTECTED]>
>>Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
>>To: 'Struts Users Mailing List' <[EMAIL PROTECTED]>
>>Subject: RE: tiles and logic:forward
>>Date: Tue, 11 Mar 2003 14:43:01 -0500
>>
>>I did not look at struts source code, but I guess the underlying
>>implementation of <logic:forward> is by using
>>javax.servlet.RequestDispatcher forward method. And <logic:redirect>
>>is by using sendRedirect.
>>
>>In either case, as indicated by the Java documentation, the forward or
>>redirect will fail once you have already commit the output to HTTP
>>response. I think this is HTTP and servlet nature, rather than a tile
>>issue.
>>
>>IMHO, tile enables you to assemble the web page by including the
>>outcome
>>of
>>all the content tiles. The login redirect/forward logic should be handled
>>outside of tile's scope.
>>
>>- GZ
>>
>>
>>-----Original Message-----
>>From: Laker Shen [mailto:[EMAIL PROTECTED]
>>Sent: Tuesday, March 11, 2003 2:14 PM
>>To: [EMAIL PROTECTED]
>>Subject: RE: tiles and logic:forward
>>
>>
>>Thanks.
>>
>>However, if it is the case, tiles is really silly.
>>
>>The forward logic should be inside each content tile. There's no way I
>>can move the logic into a jsp page before calling any tile, e.g.
>>layout.jsp.
>>
>>There should be a better way, otherwise, tiles is not useful at all.
>>
>> >From: "Zheng, Gang" <[EMAIL PROTECTED]>
>> >Reply-To: "Struts Users Mailing List"
>> ><[EMAIL PROTECTED]>
>> >To: 'Struts Users Mailing List' <[EMAIL PROTECTED]>
>> >Subject: RE: tiles and logic:forward
>> >Date: Tue, 11 Mar 2003 14:08:04 -0500
>> >
>> >You have to make sure the the "forward" or "redirect" happens before
>> >anything is written out to the HTTP response.
>> >
>> >One way is to invoke the <logic:forward name="logon"/> the first
>> >thing in your JSP page before you call any tiles.
>> >
>> >- GZ
>> >
>> >-----Original Message-----
>> >From: Laker Shen [mailto:[EMAIL PROTECTED]
>> >Sent: Tuesday, March 11, 2003 1:50 PM
>> >To: [EMAIL PROTECTED]
>> >Subject: tiles and logic:forward
>> >
>> >
>> >I tried to migrate my struts project to use tiles. Hit some problems
>> >with forward.
>> >
>> >In a tile, I have:
>> > <logic:notPresent scope="session" name="user">
>> > <logic:forward name="logon"/>
>> > </logic:notPresent>
>> >
>> >If the user is not logged on, he will be directed to the logon page.
>> >It works as a standalone jsp page. However, once I put it into a
>> >tile, it is not working. The following exception is thrown:
>> >[ServletException in:/docs/SubmitFile.jsp] Exception forwarding for
>> >name
>> >logon: java.lang.IllegalStateException: Cannot forward after response
>> >has been committed'
>> >
>> >Looks like the way tiles works is to put all the tile definition
>> >into one http response and write to the response even before the
>> >forward happens.
>> >
>> >I tried to use logic:redirect, no exception is thrown, but the user
>> >is not directed to the logon page.
>> >
>> >Can someone help? Thanks.
>> >
>> >
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