user Digest 9 Apr 2008 12:32:15 -0000 Issue 7970

Topics (messages 185169 through 185196):

date conversion
 185169 by: Adam Hardy
 185170 by: Brad A Cupit
 185171 by: Dave Newton
 185175 by: Adam Hardy
 185176 by: Dave Newton
 185183 by: Adam Hardy
 185189 by: Zoran Avtarovski
 185194 by: Alberto A. Flores

Re: another noob..
 185172 by: Berger, Michael
 185173 by: Antonio Petrelli

Re: interesting proxy + action chain issue
 185174 by: Ian Meikle
 185188 by: Jeromy Evans

Simple interceptor is not called
 185177 by: Peter Theissen
 185178 by: Dave Newton
 185179 by: Peter Theissen
 185180 by: Nils-Helge Garli Hegvik
 185185 by: Dave Newton

Request scoped data in Struts2
 185181 by: Raghuveer Kumarakrishnan
 185182 by: Chris Pratt
 185186 by: Raghuveer Kumarakrishnan
 185187 by: Dave Newton

Using fileupload throws,java.lang.RuntimeException: Unable to load bean org.apache.struts2.dispatcher.multipart.MultiPartRequest (jakarta) - [unknown location]
 185184 by: Peter McKeown

problem in file upload
 185190 by: Rajeev Sharma
 185195 by: Jeromy Evans

Struts 2 <s:a> URL tag problems
 185191 by: ancatdubher
 185192 by: 袁嘉铭

how to set dynamic name for html:radio
 185193 by: balaji.m.cs

Re: Problem with struts in JSP
 185196 by: Jeromy Evans

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We had the same issue and went with writing a new converter (shown below).
And then created a xwork-conversion.properties file pointing to it.

Z.

  private final static SimpleDateFormat DATE_FORMAT = new
SimpleDateFormat("dd/MM/yyyy");   @Override   public Object
convertFromString(Map context, String[] values, Class toType) throws
TypeConversionException {        try {           return
DATE_FORMAT.parse( values[0]);        } catch (ParseException e) {
e.printStackTrace();           throw new
TypeConversionException("xwork.default.invalid.fieldvalue");        }
return null;   }   @Override   public String convertToString(Map
context, Object object) {     Calendar cal = Calendar.getInstance();
cal.setTime((Date) object);           try {         return
DATE_FORMAT.format(object);           } catch (Exception e) {
throw new TypeConversionException("xwork.default.invalid.fieldvalue");
}   }


>
> Can you patch a whole class?
>
> What would be useful is parameterizable type converters, to specify the date
> format in this case. (they're not parameterizable, are they?)
>
> Dave Newton on 08/04/08 22:13, wrote:
>> > --- Adam Hardy <ahardy.struts@(protected):
>>> >> One area where S1 actually had the upper hand :(
>> >
>> > Submit a patch :)
>> >
>> > Dave
>> >
>>> >> Dave Newton on 08/04/08 18:36, wrote:
>>>> >>> The built-in type converter uses "uses the SHORT format for the Locale
>>>> >>> associated with the current request" according to the type conversion
>>> >> docs,
>>>> >>> so yes, you'll need to do your own if you're using a different input
>>> >> format.
>>>> >>> Looking through the XWork conversion code it's hard for me to tell what
>>> >> it's
>>>> >>> *actually* doing, though :/
>>>> >>>
>>>> >>> Dave
>>>> >>>
>>>> >>> --- Brad A Cupit <brad@(protected):
>>>> >>>
>>>>> >>>> JSTL has the <fmt:formatDate> tag. If you want to do it in Java,
>>>>> rather
>>>>> >>>> than your JSP, you can use SimpleDateFormat.
>>>>> >>>>
>>>>> >>>> Be aware that SimpleDataFormat is not thread safe, so don't assign it
to
>>> >> a
>>>>> >>>> static field or use it in a singleton. If you use it as an instance
>>> >> field
>>>>> >>>> on an Action you'll be safe, since Actions are created per request.
>>>>> >>>>
>>>>> >>>> If you want a thread safe version of SimpleDateFormat, Jakarta
>>>>> Commons
>>> >> lang
>>>>> >>>> has FastDateFormat: http://commons.apache.org/lang/
>>>>> >>>>
>>>>> >>>> Brad Cupit
>>>>> >>>> Louisiana State University - UIS
>>>>> >>>> e-mail: brad@(protected)
>>>>> >>>> office: 225.578.4774
>>>>> >>>>
>>>>> >>>>
>>>>> >>>> -----Original Message-----
>>>>> >>>> From: Adam Hardy [mailto:ahardy.struts@(protected)]
>>>>> >>>> Sent: Tuesday, April 08, 2008 12:11 PM
>>>>> >>>> To: Struts Users Mailing List
>>>>> >>>> Subject: date conversion
>>>>> >>>>
>>>>> >>>> Hi
>>>>> >>>>
>>>>> >>>> quick question, I can't find any specific mention of what I want so I
>>>>> >>>> assume I
>>>>> >>>> have to code my own Converter.
>>>>> >>>>
>>>>> >>>> I need a date in the ISO format YYYY-MM-DD
>>>>> >>>>
>>>>> >>>> There is no converter that I can configure in the struts package, is
>>> >> there?
>
>
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>

Also, consider to inject the format in your IoC container (Guice,
Spring, etc).

Zoran Avtarovski wrote:
> We had the same issue and went with writing a new converter (shown below).
> And then created a xwork-conversion.properties file pointing to it.
>
> Z.
>
>   private final static SimpleDateFormat DATE_FORMAT = new
> SimpleDateFormat("dd/MM/yyyy");   @Override   public Object
> convertFromString(Map context, String[] values, Class toType) throws
> TypeConversionException {        try {           return
> DATE_FORMAT.parse( values[0]);        } catch (ParseException e) {
> e.printStackTrace();           throw new
> TypeConversionException("xwork.default.invalid.fieldvalue");        }
> return null;   }   @Override   public String convertToString(Map
> context, Object object) {     Calendar cal = Calendar.getInstance();
> cal.setTime((Date) object);           try {         return
> DATE_FORMAT.format(object);           } catch (Exception e) {
> throw new TypeConversionException("xwork.default.invalid.fieldvalue");
> }   }
>
>
>> Can you patch a whole class?
>>
>> What would be useful is parameterizable type converters, to specify the date
>> format in this case. (they're not parameterizable, are they?)
>>
>> Dave Newton on 08/04/08 22:13, wrote:
>>>> --- Adam Hardy <ahardy.struts@(protected):
>>>>>> One area where S1 actually had the upper hand :(
>>>> Submit a patch :)
>>>>
>>>> Dave
>>>>
>>>>>> Dave Newton on 08/04/08 18:36, wrote:
>>>>>>>> The built-in type converter uses "uses the SHORT format for the Locale
>>>>>>>> associated with the current request" according to the type conversion
>>>>>> docs,
>>>>>>>> so yes, you'll need to do your own if you're using a different input
>>>>>> format.
>>>>>>>> Looking through the XWork conversion code it's hard for me to tell what
>>>>>> it's
>>>>>>>> *actually* doing, though :/
>>>>>>>>
>>>>>>>> Dave
>>>>>>>>
>>>>>>>> --- Brad A Cupit <brad@(protected):
>>>>>>>>
>>>>>>>>>> JSTL has the <fmt:formatDate> tag. If you want to do it in Java,
>>>>>> rather
>>>>>>>>>> than your JSP, you can use SimpleDateFormat.
>>>>>>>>>>
>>>>>>>>>> Be aware that SimpleDataFormat is not thread safe, so don't assign it
> to
>>>>>> a
>>>>>>>>>> static field or use it in a singleton. If you use it as an instance
>>>>>> field
>>>>>>>>>> on an Action you'll be safe, since Actions are created per request.
>>>>>>>>>>
>>>>>>>>>> If you want a thread safe version of SimpleDateFormat, Jakarta
>>>>>> Commons
>>>>>> lang
>>>>>>>>>> has FastDateFormat: http://commons.apache.org/lang/
>>>>>>>>>>
>>>>>>>>>> Brad Cupit
>>>>>>>>>> Louisiana State University - UIS
>>>>>>>>>> e-mail: brad@(protected)
>>>>>>>>>> office: 225.578.4774
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> -----Original Message-----
>>>>>>>>>> From: Adam Hardy [mailto:ahardy.struts@(protected)]
>>>>>>>>>> Sent: Tuesday, April 08, 2008 12:11 PM
>>>>>>>>>> To: Struts Users Mailing List
>>>>>>>>>> Subject: date conversion
>>>>>>>>>>
>>>>>>>>>> Hi
>>>>>>>>>>
>>>>>>>>>> quick question, I can't find any specific mention of what I want so I
>>>>>>>>>> assume I
>>>>>>>>>> have to code my own Converter.
>>>>>>>>>>
>>>>>>>>>> I need a date in the ISO format YYYY-MM-DD
>>>>>>>>>>
>>>>>>>>>> There is no converter that I can configure in the struts package, is
>>>>>> there?
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@(protected)
>> For additional commands, e-mail: user-help@(protected)
>>
>
>
>

--

Alberto A. Flores
http://www.linkedin.com/in/aflores

HI,

I have been following this post with interest since I used the PRG pattern
in previous projects.
We are using struts 2 in are current project and I like the errorMessages
behaviour that is part of the Action.

Is it possible to persist these over the PRG cycle ?
By default I assume they would be lost when we get to the GET stage since
they are request scope and the GET is a seperate request than the POST
that caused the error.

Regards
Ian

CSC Solutions Norge AS
Registered Office: Sandsliåsen 57, 5254 Sandsli, Norway
Registered in Norway No: 958 958 455

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"Brad A Cupit" <brad@(protected)>
08.04.2008 17:16
Please respond to
"Struts Users Mailing List" <user@(protected)>


To
"Struts Users Mailing List" <user@(protected)>
cc

Subject
RE: interesting proxy + action chain issue






Oh thank you so much for the response. I've been reading about the
POST-redirect-GET pattern and I'm starting to see the light. I found the
original article here, in case anyone else is interested:

http://www.theserverside.com/tt/articles/article.tss?l=RedirectAfterPost

Brad Cupit
Louisiana State University - UIS


-----Original Message-----
From: Jeromy Evans [mailto:jeromy.evans@(protected)]
Sent: Monday, April 07, 2008 8:20 PM
To: Struts Users Mailing List
Subject: Re: interesting proxy + action chain issue

Brad A Cupit wrote:
> ServletActionRedirectResult worked when I used it instead of the
> ActionChainResult. This performs an extra round trip back to the
> browser, which isn't terrible unless I want to pass data from one
Action
> to another, and herein lies some concern.
> ...
>
> POSTS should each have their own Action (which may write the data to
the
> DB). This Action should only process the POST. Afterwards, it forwards
> (chains) to another Action, which sits in front of the view. If the
view
> needs data from the DB, it goes in the Action for that view (not the
> POST-handling Action). If the view doesn't need data, then the Action
is
> dumb and just forwards to the view.
>
>

The reason the post-redirect-get pattern is typically preferred over
your approach is for handling of the browser's back button.
By returning a redirect the browser is prevented from reposting
data/showing a warning if the user presses back.

Your approach is clearly more efficient as it removes a request-response

cycle, but unfortunately the repost issue usually supersedes that.

>
> Seems like a nice design, but Action chaining isn't recommended, and
> isn't working with CGLIB proxies :-(
>
>

The main argument for discouraging action chaining is simply to reduce
coupling between actions. I didn't realise Ognl was performing a copy.

I thought the next action was
simply pushed onto the stack above the previous action allowing you to
access the properties of the previous action. I guess I'm wrong.

You may have stumbled upon another reason to discourage use of chaining.




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This doc seems to suggest that even request scoped data needs to explicitly set using
<s:set....> to be used by tag libraries like jsp taglib or displaytag
 
http://struts.apache.org/2.x/docs/exposing-framework-objects-to-jstl-with-a-jstl-and-displaytag-example.html
 
 
But for request scoped data you do not need to explicitly set it as a request attribute,just getters on the action will do ,so a tag library like displaytag will work out of the box
 
  <display:table name="someName" ....>
...
..

  </display:table>
 
where there is a getSomeName( ) method in the Struts2 Action class

 
Am I missing something or does the doc need to be updated?
 
--Raghu


A Goal .......... Is a Dream with a Deadline
   
---------------------------------
You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.

My point is just having getters for an Action property should suffice for it to be accessed in the view by any tag library.

Chris Pratt <thechrispratt@(protected):
You are correct. In that case,



is equivalent to calling

request.put("someName",action.getSomeName());

in an Action that implements RequestAware. So when Display Tag processes



The "someName" attribute is available when the JSP Tag Library
(DisplayTag in this instance) calls
pageContext.findAttribute("someName");

But you have to use the (or put the value in the request from
the action) for DisplayTag to see it.

(*Chris*)

On Tue, Apr 8, 2008 at 3:12 PM, Raghuveer Kumarakrishnan
wrote:
> This doc seems to suggest that even request scoped data needs to explicitly set using
> to be used by tag libraries like jsp taglib or displaytag
>
> http://struts.apache.org/2.x/docs/exposing-framework-objects-to-jstl-with-a-jstl-and-displaytag-example.html
>
>
> But for request scoped data you do not need to explicitly set it as a request attribute,just getters on the action will do ,so a tag library like displaytag will work out of the box
>
>
> ...
> ..
>
>
>
> where there is a getSomeName( ) method in the Struts2 Action class
>
>
> Am I missing something or does the doc need to be updated?
>
> --Raghu
>
>
> A Goal .......... Is a Dream with a Deadline
>
> ---------------------------------
> You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.

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A Goal .......... Is a Dream with a Deadline
   
---------------------------------
You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost.

hi

try it

<s:url id="viewURL" namespace="/account" action="view" />
<s:a href=%{viewURL}> View Your Account </s:a>

My english is not good
hope this can help you

gordian

On Wed, Apr 9, 2008 at 6:00 PM, ancatdubher <ancatdubher@(protected):

>
> Hi,
>
> I use the Struts 2  tag to generate my URLs.
> For example to generate the URL /account/view.action, I do:
>
> <s:url id="viewURL" namespace="account" action="view" />
> <s:a href=%{viewURL}> View Your Account </s:a>
>
> But each click on this URL inserts an extra "namespace" prefix into the
> generated URL.
> I mean, after clicking 5 times on the "View Your Account" link, my address
> bar reads:
>
>
> http://localhost/mysite/account/account/account/account/account/view.action
>
> This still takes me to the correct page, but...
>
> What am I missing?
>
> Thanks,
> Ancat.
> --
> View this message in context:
> http://www.nabble.com/Struts-2-%3Cs%3Aa%3E-URL-tag-problems-tp16583543p16583543.html
> Sent from the Struts - User mailing list archive at Nabble.com.
>
>
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