[Actionframework-users] Exceptions: Stack Trace (to Sagar Saladi)

[<ser...@is...>]

Hi there!

I'm not a member of the list, soi cant post this answer in the forum.=20
Anyway, i would like to help with my answer, that answers a post from=20
Sagar Saladi about retrievin the Stack Trace of an error.

I have a bit of code that can help you. Just declare the exception in=20
the xml file like this:

<on-exception class=3D"java/lang/NullPointerException" assign-to=3D"npe"=20
show-template=3D"error.vm">
                <output-variable name=3D"obj" value=3D"$npe"/>
</on-exception>

And the, in the "error.vm" code, add this:

<form name=3D"frmStack">
    <div id=3D"show">
        <input type=3D"button" value=3D"Show stack trace" id=3D"btnShowSt=
ack"=20
onclick=3D"showStack()">
    </div>
  =20
    <div id=3D"hide" style=3D"display:none">
        <input type=3D"button" value=3D"Hide stack trace" id=3D"btnHideSt=
ack"=20
onclick=3D"hideStack()">
    </div>
</form>

<div id=3D"stack" style=3D"display:none">
<strong><font color=3D"blue">Stack trace:</font></strong> <br>
<p><TT>
<hr>
    #foreach($call in $obj.getStackTrace())
        $velocityCount -
        $call.getFileName() (line $call.getLineNumber()):=20
$call.getClassName() -> $call.getMethodName() <br>
    #end
<hr>
</TT></p>
</div>

And, last but not least, add a jscript file to the error.vm with the=20
following code:

function showStack()
{
    document.getElementById('show').style.display=3D'none';
  =20
    document.getElementById('hide').style.display=3D'block';
    document.getElementById('stack').style.display=3D'block';
}

function hideStack()
{
    document.getElementById('hide').style.display=3D'none';
  =20
    document.getElementById('show').style.display=3D'block';
  =20
    document.getElementById('stack').style.display=3D'none';
}


That's all. I hope it helps you,

Regards

--=20
Seraf=EDn Orill=E1n Chaparro
Isotrol S.A.
Avda. de la Innovaci=F3n s/n
+34 955 036 800
e-mail: ser...@is...