Spring autowired bean for @Aspect aspect is null

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The aspect is a singleton object and is created outside the Spring container. A solution with XML configuration is to use Spring’s factory method to retrieve the aspect.

<bean id="syncLoggingAspect" class="uk.co.demo.SyncLoggingAspect" 
     factory-method="aspectOf" />

With this configuration the aspect will be treated as any other Spring bean and the autowiring will work as normal.

You have to use the factory-method also on Enum objects and other objects without a constructor or objects that are created outside the Spring container.

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