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POSpring webflow 1.0 - Downloading a file
 

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    <p>I am using spring webflow 1.0. I am uploading a csv file, parsing it, and displying results before proceeding. The user has an option to download a csv file that contains the records that did not pass validation. When I click the link in a JSP to download this file, webflow invokes a form Action. The form action writes out a file via getting the output stream off the response:</p> <p><code>HttpServletResponse response = ((ServletExternalContext) context.getExternalContext()).getResponse();</code></p> <p>I do not want to leave the jsp I'm currently on. I just want to download the file. In other words, I do not want to transition to another state. I just want to serve the dynamically rendered file. Everything works (I don't leave the page, and I download the file), but I'm getting the following error in my console:</p> <pre><code>_pEncydKfggPHJo8=org.springframework.webflow.engine.NoMatchingTransitionException: No transition was matched on the event(s) signaled by the [1] action(s) that executed in this action state 'downloadErrorReportAction' of flow 'myFlow'; transitions must be defined to handle action result outcomes -- possible flow configuration error? Note: the eventIds signaled were: 'array&lt;String&gt;[[null]]', while the supported set of transitional criteria for this action state is 'array&lt;TransitionCriteria&gt;[[empty]]' at org.springframework.webflow.engine.ActionState.doEnter(ActionState.java:187) at org.springframework.webflow.engine.State.enter(State.java:191) at org.springframework.webflow.engine.Transition.execute(Transition.java:212) at org.springframework.webflow.engine.TransitionableState.onEvent(TransitionableState.java:107) at org.springframework.webflow.engine.Flow.onEvent(Flow.java:534) Truncated. see log file for complete stacktrace </code></pre> <p>Here is the relevant portion of my webflow config.</p> <pre><code>&lt;view-state id="showUploadResults" view="UploadResults3.0"&gt; &lt;render-actions&gt; &lt;action bean="UploadResultsAction" method="transitionToWebflow"/&gt; &lt;action bean="UploadResultsAction" method="setupData"/&gt; &lt;/render-actions&gt; &lt;transition on="submit" to="proceed"/&gt; &lt;transition on="downloadErrorReport" to="downloadErrorReportAction"/&gt; &lt;/view-state&gt; &lt;action-state id="downloadErrorReportAction"&gt; &lt;action bean="UploadResultsAction" method="downloadErrorReport" name="downloadErrorReport"/&gt; &lt;/action-state&gt; </code></pre>
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