Re: Cannot call c:import / more than once!
There is a simple solution. In the c:import specify an absolute URL. I am having the same issue as you were last month. I am using OC4J (AS 10g) and can not c:import nor tiles:insert more than one Struts action on the same JSP. I saw that you worked around the issue by using an absolute URL with c:import. I tried this too and it does indeed work however this results in a distinct request scope such that the request scope of the calling JSP is not visible in the included Struts action (and vice versa). Did you find this too? Have you found any other workarounds to this issue? Do you think this is an OC4J issue, a Struts issue, a JSTL issue? Why do you suppose there is so little written about this problem considering that what we are doing seems like it would be an ideal architecture? It does say in the jstl spec for import that if the url is within the same application context then the environment variables will be pass on, ie request, response, etc. Struts actions commit to the response so you cannot use them to include additional data in this way. It worked out well with an absolute url because we are using a webcache so that the import was fast enough. I guess your options are to either change the struts action into just including a jsp page or servlet, or importing an absolute url and putting the required information in as request parameters to the url. Mick. ps. please post your question to the mailing list, and then, only if the thread is old, email me a copy. -- To be young, really young, takes a very long time. Picasso --- www.vetproducts.com.au --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Cannot call c:import / more than once!
On Wed, 13 Oct 2004 13:59:32 -0400, Kris Schneider wrote: I'm not sure he actually intended to do multiple forwards, it seems like he just wanted to reuse an action to generate some common output. The fact that Struts is performing an implicit forward in response to each of those imports can be easy to overlook. Well bugger. I would go so far as to say that struts is not honouring the contract of c:import. Nowhere (that I can find, and please quickly point it out if you can) in the JSTL documentation can I find spec or definition that c:import 'forwards'. It is clearly stated that it imports a URL and never mentions forwarding. Taking this further, examples in Sun's 'core JSTL' book actually use multiple c:import's! So there is the clear indication that the import does not forward, and struts is breaking this contract... Should I enter a bug? Mick. -- ---BR/ Everything you can imagine is real. Pablo Picasso BR/ a href=http://www.harryspractice.com.auHarry's Practice/a BR/--- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Cannot call c:import / more than once!
It's got nothing to do with JSTL and everything to do with your Struts action. The Struts controller effectively performs the forward with the result of your action's execute method. Yes, c:import can work perfectly well when used multiple times in a page. For URLs that are within the same context (same app), the semantics are pretty much the same as RequestDispatcher.include. This is awkward. Is there no way that the Struts could avoid committing the response when it is called from the import tag. Simply avoiding the commit, or cloning the response so the original response is not altered? Mick -- ---BR/ The turtle only makes progress when it's neck is stuck out Rollo May BR/ a href=http://www.harryspractice.com.auHarry's Practice/a BR/--- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Cannot call c:import / more than once!
On Thu, 14 Oct 2004 07:17:34 -0400, Kris Schneider wrote:
It's got nothing to do with JSTL and everything to do with your Struts
action. The Struts controller effectively performs the forward with the
result of your action's execute method. Yes, c:import can work perfectly
well when used multiple times in a page. For URLs that are within the same
context (same app), the semantics are pretty much the same as
RequestDispatcher.include.
Delving deeper into the JSTL defintion for c:import it does mentioned that
if the url is relative and within the same context then the
RequestProcessor.include is used, and the entire environment is available.
There is a simple solution. In the c:import specify an absolute URL.
So the code below works just fine:
%@ taglib uri=c.tld prefix=c %
c:forEach items=${listOfNumbers} var=number
c:import url=http://myServer/myContext/myAction.do?number=${number}/
br/
/c:forEach
Mick.
ps Thanks for your explanation and reference to RequestProcessor.include, without
this I would not have found the small print ;=)
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Re: FieldChecks change signature and no longer returns value
Gentoo now has the latest version. You're responsible for the ebuild? Thanks! But doesn't build: Source unpacked. Buildfile: build.xml does not exist! Build failed Mick. -- ---BR/ The reward of patience is patience. St. Augustine BR/ a href=http://www.harryspractice.com.auHarry's Practice/a BR/--- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Cannot call c:import / more than once!
I think I've got a very annoying
Response has already been committed problem narrowed down...
The follwing jsp code does not work for me:
%@ taglib uri=c.tld prefix=c %
c:forEach items=${listOfNumbers} var=number
c:import url=/customAction.do?number=${number}/
br/
/c:forEach
Because during the c:import the response is committed, and when the
second (or third) c:import executes it dumps Response has already been
committed. So somewhere between
org.apache.taglibs.standard.common.core.ImportSupport.doEndTag(:179) and
org.apache.struts.action.RequestProcessor.processActionPerform(:421)
my response is getting committed.
Does anyone know where this would be?
Or has anyone experienced this problem before?
Or even better, can someone give me a solution to get around this?
I'm using struts-1.2.4, and Oracle's OC4J (Orion).
The following stacktrace hints at the methods involved between the
c:import and customAction:
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
at
com.evermind.server.http.ServletRequestDispatcher.include(ServletRequestDispatcher.java:121)
at
com.evermind.server.http.GetParametersRequestDispatcher.newInclude(GetParametersRequestDispatcher.java:80)
at
com.evermind.server.http.GetParametersRequestDispatcher.include(GetParametersRequestDispatcher.java:34)
at
org.apache.taglibs.standard.tag.common.core.ImportSupport.acquireString(ImportSupport.java:314)
at
org.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag(ImportSupport.java:179)
Mick.
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FieldChecks change signature and no longer returns value
After updating to version 1.2.2 FieldsCheck.checkInteger(..) now returns a boolean indicating success rather the value. This has broken our code and we need the value. Is there a substitute method now? Mick. -- BR/ It is not enough to have a good mind; the main thing is to use it well. Descartes - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: FieldChecks change signature and no longer returns value
After updating to version 1.2.2
FieldsCheck.validateInteger(..) now returns a boolean indicating success
rather the value. This has broken our code and we need the value. Is
there a substitute method now?
I've tracked this down to a patch done under bug#26413.
http://issues.apache.org/bugzilla/show_bug.cgi?id=26413
Changing signatures like this is bad API development.
This change has royally screwed me.
Now I have to copy _ALL_ of the code in FieldChecks.validateInteger(..)
into our application just to get the value again.
IMHO it would have been much much better api development to provide
wrapper methods around the existing validateXXX methods that provided the
fix you wanted.
For example:
public static boolean validatableInteger(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
HttpServletRequest request) {
return validateInteger(bean,va,field,errors,request) == null
? false : true;
}
This would not break the API, and would solve this issue.
I'm not sure validatable is a word? But you get my drift.
Mick
--
BR/ It is not enough to have a good mind; the main thing is to use it well.
Descartes
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Re: FieldChecks change signature and no longer returns value
Version 1.2.2 was downgraded from ga quality because of problems so its not a good idea to use it in general. Current release version is 1.2.4 and this issue was fixed in that version. Sorry, failed to look that far ahead :$ Gentoo, unfortunately is still publishing 1.2.2 :( P.S. I assume you meant FieldsCheck.validateInteger(..) rather than checkInteger() Yes, indeed. -- BR/ The ultimate measure of a man is not where he stands in moments of comfort and convenience but where he stands at times of challenge and controversy. Martin Luther King - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Links relative to jsp not action in Opera
When our webpages are viewed with opera all our links are relative to the jsp used (within tiles) not the actual url/action given. Is there some way of changing the response so that the url is correct and relative links don't reference the jsp? Mick. -- -- BR/ It is not enough to have a good mind; the main thing is to use it well. Descartes BR/ --- a href=http://www.harryspractice.com.auHarry's Practice/a --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Links relative to jsp not action in Opera
On Wed, 26 May 2004 07:14:52 -0400, James Mitchell wrote: Opera should know nothing about your jsp, unless you are doing something else wrong. Are you using redirects or forwards? Indeed I would think so too. There are naturally no differents in the html source between the different browsers, and the links are definitely relative, but Opera bases the links relative to the last requested jsp not the request url, hence this last-requested-jsp information must be stored somewhere in the response... So, how to I change it back to the original request url before the response is sent? Mick ps there are forwards and tiles involved. -- -- BR/ To be young, really young, takes a very long time. Picasso BR/ --- a href=http://www.harryspractice.com.auHarry's Practice/a --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Links relative to jsp not action in Opera
On Wed, 26 May 2004 13:28:23 +0200, Kransen, J. wrote: Do you have a base tag inside your htmlhead ? No, but I'm playing around with that now... One problem that arises from using the base tag is browser differences: IE: server name and port required in base href Firefox: base tag doesn't work at all Opera: works great. Mick. -- -- BR/ When prosperity comes, do not use all of it. Confucius BR/ --- a href=http://www.harryspractice.com.auHarry's Practice/a --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Links relative to jsp not action in Opera
On Wed, 26 May 2004 13:49:34 +0200, Kransen, J. wrote: You probably already know, but you can use Struts html:base/ tag to dynamically create the base tag. This works great as you don't have to edit the tag if you move the page or change the server for example. It also creates the full http://host/webapp/page.jsp; I'm not sure on how to use the htmml:base tag in the opposite manner, ie the href to be that of the struts action's path not the jsp's path? Mick [The other problem here is in a clustor the server must be the virtual host fronting the clustor not the localhost, although this can be solved it's just an extra pain.] -- -- BR/ Only those who risk going too far can possibly know how far they can really go. T.S. Eliot BR/ --- a href=http://www.harryspractice.com.auHarry's Practice/a --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Links relative to jsp not action in Opera
On Wed, 26 May 2004 14:52:08 +0200, Kransen, J. wrote: I'm not sure on how to use the html:base tag in the opposite manner, ie the href to be that of the struts action's path not the jsp's path? Indeed it seems impossible to create a base tag containing an action path instead of a jsp path, or at least it didn't work for me. I assume your jsps are not in the root? I once had difficulties with the base tag with jsps not in the webapp root. I ended up placing the jsps in the webapp root. Not sure if this is an option for your project, but maybe you can do the same? Ended up just using base (base/) tag directly, with a coded correct base url (virtual hostname, port, web context, and action path). A bit messy just to satisfy one browser, but i guess #*% happens. It would have been nice to exclude the action path from the base url making all relative links relative to the base of the webcontext but... firefox doesn't honour the base tag! Thanks for the help Jeroen. Mick. -- -- BR/ Living on Earth is expensive, but it does include a free trip around the sun every year. Unknown BR/ --- a href=http://www.harryspractice.com.auHarry's Practice/a --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to renderize a image?
On Wed, 26 May 2004 10:26:34 -0300, Paulo Rezende wrote:
It's a way but I really dont like it. If I copy all the fields of a table
to properties of the form, why i dont can copy also the image to a Blob in
the form and use it? Do I need to create another connection with db and
run another sql only to get the image?
Yes you'll need separate db calls. Images are always separate urls and are
not 'embedded' into the html.
Your picture servlet will look something like below so it's not like there
is really a lot of extra work involved.
String format = ...;
byte[] data = ...;
try{
response.reset();
response.setContentType(format);
ServletOutputStream ss = response.getOutputStream();
ss.write(data);
ss.close();
}catch(IOException io){
LOG.error(PictureServlet.doGet +io);
}
Mick.
--
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As you go the way of life, you will see a great chasm. Jump. It is not as wide as you
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