I'm currently facing a problem using Spring Web Flows 2.0.7, the webflow crashes, when a variable is submitted. The corresponding webflow looks like this:
<flow xmlns="http://www.springframework.org/schema/webflow"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/webflow
http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd">
<!-- some model, i use below -->
<var name="register"
class="org.zcore.conference.Registration" />
<!-- my input id -->
<input type="long" name="conId" value="flowScope.conId"/>
<!-- my first view state -->
<view-state id="register" model="register">
<!-- imagine much more stuff here -->
</flow>
When entering the flow with an appended conId (http://localhost:8080/app/myflow?conId=123) the following error pops up:
2012-08-07 17:33:34,583 WARN 25205715@qtp-28882952-5 com.coremedia.cae.webflow.AbstractFlowViewController - Error handling flow request: 'Could not serialize flow execution; make sure all objects stored in flow or flash scope are serializable': /app/flow
org.springframework.webflow.execution.repository.snapshot.SnapshotCreationException: Could not serialize flow execution; make sure all objects stored in flow or flash scope are serializable
I'm pretty surprised, that the supplied value does not seem to be serializable, as it is a simple int value. Looks like I'm missing something basic here.
