How can I customize the AuditingHandler injected by Spring-Data when using Auditing? How can I customize the AuditingHandler injected by Spring-Data when using Auditing? spring spring

How can I customize the AuditingHandler injected by Spring-Data when using Auditing?


I met the same question.

The short version

You have to register jpaAuditingHandler bean definition using BeanDefinitionRegistry.

The long version

the org.springframework.data.jpa.domain.support.AuditingEntityListener is a special class which mixed in with aspectj when compiling. see here

It need a bean definition to work. see the spring framework document.

the org.springframework.data.jpa.repository.config.EnableJpaAuditing you are using will register the bean definition with auditingHandler bind to a jpaAuditingHandler bean. It also will register the jpaAuditingHandler bean definition.

If you add a jpaAuditingHandler using @Component, it won't work because Spring prefer another one. see org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader#loadBeanDefinitionsForConfigurationClass

So you have to register your bean definition using BeanDefinitionRegistry.

public class jpaAuditingHandlerRegistrar implements ImportBeanDefinitionRegistrar {    @Override    public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {        registry.registerBeanDefinition("jpaAuditingHandler", BeanDefinitionBuilder                .rootBeanDefinition(JpaAuditingHandler.class)                .addConstructorArgReference("jpaMappingContext")                .getBeanDefinition());    }}

and add @Import(JpaAuditingHandlerRegistrar.class) to your Configuration class

@SpringBootApplication@EnableJpaAuditing@Import(JpaAuditingHandlerRegistrar.class)public class Application {

I put sample code https://github.com/macdao/customize-auditing-handler