Mixed JpaTransactionManager with JTA transaction type in the beans.xml and persistence.xml
Upgrade to Confluence 3.5.5 or install the patch as explained in the details.
Spring Security detects beans in the root context. Move the detection of the bean (or declare it explictly) in the root context.
Your applicationcontext.xml has a transactionManager defined. Your would need to remove it or add an entity manager.
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- org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.integration.endpoint.SourceEndpoint#0': Cannot resolve reference to bean 'output' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'output' is defined at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:275)