Hi,

I need to call an existing struts action within my application from a
JavaScript function. I thought it might be possible to create an additional 
entry in the struts mapping file like this:

<action name="getDataJson" class="com.mypackage.MyAction" method="getData">
<result type="json" />
</action>

and then call the action with "getDataJson.action".
Unfortunately, when I try this a NullPointerException occurs in the action 
code. It seems, some parameters are not properly initialized.

What I'd like to know is: what is the recommendet way of calling an existing 
action to get JSON results? Is it a good idea to do this at all?

Cheers,
Markus 
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