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From "Gautham (JIRA)" <>
Subject [jira] [Created] (WW-4336) Action tag does not process list type parameters correctly
Date Wed, 30 Apr 2014 09:49:15 GMT
Gautham created WW-4336:

             Summary: Action tag does not process list type parameters correctly
                 Key: WW-4336
             Project: Struts 2
          Issue Type: Bug
          Components: Core Actions, Plugin - Tags
    Affects Versions:
            Reporter: Gautham

Hello Everyone. 

While migrating application from struts 2.0.11 to 2.3.15.x encountered below issue - 
There is a list of objects available in a jsp, within which an action is invoked ( using s:action
tag ) and that list is passed down for use in the callee action (this is being done to populate
a table). This approach worked with struts 2.0.11, but with 2.3.15 - the list is being converted
to string first before being passed to the callee action and is unusable by the time its received.

With some debugging, figured out this piece of code was doing the conversion to string.. 


String key = (String) entry.getKey();  
Object val = entry.getValue();  
if (val.getClass().isArray() && String.class == val.getClass().getComponentType())
     params.put(key, (String[])val);  
} else {  
     params.put(key, new String[]{val.toString()});  

relevant code snippet in jsp looks like this 

 <s:action name="someAction2" executeResult="true" namespace="/common" >  
    <s:param name="iterable" value="#iter"/>  

Is this an intended change in behavior ? I couldn't find relevant details in the release notes
or the migration guide.  What's the recommended approach to migrate such components ? 

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