您需要添加Faces Context侦听器，如下所示:

You need to add a Faces Context listener like this:

<flow-executor id="flowExecutor">
        <flow-execution-listeners>
            <listener ref="facesContextListener" />
        </flow-execution-listeners>
</flow-executor>

<beans:bean id="facesContextListener" class="org.springframework.faces.webflow.FlowFacesContextLifecycleListener" />