Spring boot - Unable to proxy interface-implementing method - WARN message

Question

From Spring boot 1.5.x, I receive the following WARN messages:

     :: Spring Boot ::        (v2.0.0.RELEASE)

2018-03-17 18:58:18.546  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.web.context.support.WebApplicationObjectSupport.setServletContext(javax.servlet.ServletContext)] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:18.551  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(org.springframework.context.ApplicationContext) throws org.springframework.beans.BeansException] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:18.937  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.web.context.support.WebApplicationObjectSupport.setServletContext(javax.servlet.ServletContext)] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:18.938  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(org.springframework.context.ApplicationContext) throws org.springframework.beans.BeansException] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:19.034  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.web.context.support.WebApplicationObjectSupport.setServletContext(javax.servlet.ServletContext)] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:19.035  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(org.springframework.context.ApplicationContext) throws org.springframework.beans.BeansException] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:19.136  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.web.context.support.WebApplicationObjectSupport.setServletContext(javax.servlet.ServletContext)] because it is marked as final: Consider using interface-based JDK proxies instead!
2018-03-17 18:58:19.136  WARN 27877 --- [  restartedMain] o.s.a.f.CglibAopProxy                    : Unable to proxy interface-implementing method [public final void org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(org.springframework.context.ApplicationContext) throws org.springframework.beans.BeansException] because it is marked as final: Consider using interface-based JDK proxies instead!

I don't have CGLIB in the dependency hierarchy. I'm using only interfaces for DI and I've tried to disable @EnableGlobalMethodSecurity(securedEnabled = true) and everything related to it, but still no change. (I've read that MethodSecurity and @Secured annotations in the Controller Classes can cause this WARNing, but it seems that I get them from another place. How to know from where I receive these warnings?

ROZZ · Accepted Answer · 2018-03-20 07:37:46Z

2

The problem was with some @Transactional annotations on a Class level. After I put them on the interfaces (Repositories - I'm using spring data) Everything is OK :)

answered Mar 20, 2018 at 7:37

ROZZ

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kagire · Accepted Answer · 2021-04-09 15:47:54Z

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After checking @Transactional annotation, make sure u put your @Repository annotation directly to repository interface. In my case I did the following:

Removed @Transactional and @Repository from my DAO class
Put @Repository to my repo interface
Put @Component to my DAO class

See Spring Boot + Annotations for more info about annotations

answered Apr 9, 2021 at 15:47

kagire

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parasuraman s · Accepted Answer · 2018-04-27 12:18:34Z

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Based on the reported issue, I have faced same issue like having interface-implementing method with final.

From the concrete class (Bean) if we remove final from method , also solved the same issue.

Ref: https://github.com/spring-projects/spring-boot/issues/8974

answered Apr 27, 2018 at 12:18

parasuraman s

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