Spring Webflow - access exception using transition.on-exception attribute

Question

I wondering how can I access exception object using on-exception attribute? My current configuration looks like this:

<transition on-exception="{business_exception}" to="errorView" >
</transition>

I have to access some exception attribute in errorView. Does anybody know how can I do it?

abalogh · Accepted Answer · 2011-06-29 11:01:50Z

10

This is a rather undocumented part of Spring Web Flow, but according to this thread on SpringSource forum, you can access the exception directly on your view as attributes stateException and rootCauseException.

answered Jun 29, 2011 at 11:01

abalogh

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1 Comment

pzieba Over a year ago

This could work. I found anather solution here: forum.springsource.org/… "you only have direct EL access to the outer-level (via flowExecutionException) and the root-cause (via rootCauseException) exceptions"

Rich · Accepted Answer · 2012-03-23 20:32:02Z

3

rootCauseException and flowExecutionException are the right scoped variables that are accessible in the flow. These variables are populated after the transition to the new flow,so in a pseudo sense:

<transition on-exception="{business_exception}" to="errorView" >
</transition>

<view-state id="errorView">
  <on-entry>
    <evaluate expression="exceptionHandler(flowExecutionException)"/>
    <evaluate expression="exceptionHandler(rootCauseException)"/> 
  </on-entry>
</view-state>

answered Mar 23, 2012 at 20:32

Rich

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