Spring @Transactional is applied both as a dynamic Jdk proxy and an aspectj aspect

Question

I am in the process of adding Spring declarative transactions via the @Transactional annotation to an existing Java project.

When I ran into a problem (unrelated to

Answer 1

Strange, it sounds like you have this configuration:

<tx:annotation-driven
    transaction-manager="transactionManager" mode="aspectj" />

(Transaction support using AspectJ, not JDK proxies)

Since your config doesn't have a mode attribute, the default should kick in (proxy mode). But AnnotationTransactionAspect is the exact aspect used by the aspectj mode.

Answer 2

To get aspectj transactions working with java config.

@EnableWebMvc
@Configuration
@ComponentScan("com.yourdomain")
@EnableTransactionManagement(mode=AdviceMode.ASPECTJ)
public class ApplicationConfig extends WebMvcConfigurerAdapter {

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {

        //...
    }

    @Bean
    public JpaTransactionManager transactionManager() {

        JpaTransactionManager bean = new JpaTransactionManager(entityManagerFactory().getObject());
        return bean ;
    }

    @Bean
    public AnnotationTransactionAspect annotationTransactionAspect() {

        AnnotationTransactionAspect bean = AnnotationTransactionAspect.aspectOf();
        bean.setTransactionManager(transactionManager());
        return bean;
    }
}

If you are using maven:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>aspectj-maven-plugin</artifactId>
    <version>1.7</version>
    <configuration>
        <aspectLibraries>
            <aspectLibrary>
                <groupId>org.springframework</groupId>
                <artifactId>spring-aspects</artifactId>
            </aspectLibrary>
        </aspectLibraries>
        <complianceLevel>1.8</complianceLevel>
        <source>1.8</source>
        <target>1.8</target>
        <showWeaveInfo>true</showWeaveInfo>
    </configuration>
    <executions>
        <execution>
            <goals>
                <goal>compile</goal>
            </goals>
        </execution>
    </executions>
</plugin>

If you are using eclipse, this will ensure that the weaving is done when deploying inside eclipse:

http://www.eclipse.org/ajdt/