NoSuchBeanDefinitionException How to initialise SessionFactory bean?

Question

I have a question. I tried to run my web application using Spring and Hibernate/ I have a strange error. NoSuchBeanDefinitionException. Stacktrace is:

Caused         


        

Answer 1

I would start with cleaning your configuration

This

Includes all this

You are using component scanning so no need to explicitly define all the beans (it would make component scanning pretty useless if that was still needed).

Next these 2 beans

Are already implied by

Basically leaves you with this

    
    
    



    
    
    
    



    
    
        
            com.example.entity.User
            com.example.entity.Role
        
    
    
        
            hibernate.dialect=org.hibernate.dialect.H2Dialect
            hibernate.show_sql=true
        
  



    

Not that it will solve your problem because the error is not due to the fact that the configuration is incomplete, but the configuration is in the wrong place. The datasource, sessionFactory, transactionManager and must be moved to the applicationContext.xml. Nex to that your applicationContext.xml should also include a component-scan which scans for everything but controllers.

Change the in your servlet-context.xml to

This to prevent duplicate instantiation of your @Service and @Repository beans. Which is what is happening now (both your ContextLoaderListener and DispatcherServlet are loading and creating the same beans, which would lead you to other nice exceptions and next to that duplication of memory as you have 2 instances of each bean in memory).