Zugang flashattribute in Springflow

Question

Mehrwert zu redirectAttrs.addFlashAttribute("some", value); und dann zu Springflow umleiten

Wie flashattributesome in Springflow zugreifen?

<on-start> 
<evaluate expression="do.Action(???)" result="flowScope.someobject" /> 
</on-start> 

Answer 1

Versuch:

<evaluate expression="webFlowUtils.getFlashAttribute(externalContext, 'some')"/> 

mit:

@Component 
public final class WebFlowUtils { 

    public Object getFlashAttribute(ExternalContext context, String attributeName) { 
     Map<String, ?> flashMap = RequestContextUtils.getInputFlashMap((HttpServletRequest) context.getNativeRequest()); 
     return flashMap != null ? flashMap.get(attributeName) : null; 
    } 
}