Spring's @Scheduled error : Only one AsyncAnnotationBeanPostProcessor may exist within the context

Question

I am trying Spring 3\'s @Scheduled annotation . Here is my configuration (app.xml) :

Answer 1

That error, about

Only one AsyncAnnotationBeanPostProcessor may exist within the context

, can appear in one more case. I do not insist, that that must help you, maybe you really have some complicated problem, described in other posts, but no one of them helped me.

What did help, was simple

mvn clean

, for the project somehow had created some duplicated files and those caused the problem. And a simple clean had... ehm... cleaned them.

That situation, for example, can happen after a merge with a branch with a higher version of the project.