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From Dave Newton <davelnew...@gmail.com>
Subject Re: OGNL Problems During Struts2 Upgrade
Date Thu, 21 Jul 2011 13:05:58 GMT
(Or struts.xml, the preferred mechanism AFAIK).

On Thursday, July 21, 2011, Jason Pyeron <jpyeron@pdinc.us> wrote:
>> -----Original Message-----
>> From: Asleson, Ryan
>> Sent: Thursday, July 21, 2011 8:37
>> To: user@struts.apache.org
>> Subject: [struts-user] OGNL Problems During Struts2 Upgrade
>>
>>
>> Hello,
>>
>> We are attempting to upgrade our application from Struts2
>> version 2.0.11.2 to the current version, 2.2.3.  As part of
>> the upgrade, OGNL was upgraded from version 2.7.3 to version 3.0.1.
>
> Not sure about the 2.0 upgrade path, will defer to someone else.
>
>>
>> Our JSPs make use of OGNL to call static methods on classes
>> to help with formatting.  Here's an example:
>>
>> <s:property
>> value="@com.example.DateUtils@toDate(promotion.startDate)" />
>>
>
> Can you check you struts.properties for:
>
> struts.ognl.allowStaticMethodAccess=true
>
>> The DateUtils class has a static toDate method that takes in
>> the passed in promotion.startDate object (which is likely a
>> java.sql.Date) and converts it to a java.util.Date.  It does
>> that so that s:property can properly and uniformly format the
>> date for display.
>>
>> This had worked before the upgrade from 2.0.11.2 to 2.2.3.
>> After the upgrade, it no longer works and the s:property tag
>> doesn't output anything.  I put some logging statements in
>> the toDate method and it looks like the toDate method is
>> never being called in the first place.
>>
>> One thing to note is that the DateUtils has two overloaded
>> static toDate methods:  one that takes a String, and the
>> other that takes a Date (or one of its subclasses).  This
>> doesn't seem to make any difference as I've tried changing
>> the method name (and the corresponding OGNL expression) and
>> it still failed to work.
>>
>> On this page:
>>
>> http://struts.apache.org/2.2.3/docs/version-notes-211.html
>>
>> I see this note in the "Backward compatibility issues with
>> previous versions" section:
>>
>> OGNL method calls like "text(key)" now invoke "text(String)"
>> instead of "getText(String)". This affects method calls only,
>> not properties. Some OGNL expressions may need to be updated.
>>
>> I'm wondering if this is what is affecting me?  If so, how do
>> I update the OGNL expression so that it works?  I've tried a
>> few things like adding #attr. or simply # to the front of
>> "promotion.startDate" but that didn't seem to work.
>
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