基于JPA实体类监听器@EntityListeners注解的使用实例

import org.springframework.stereotype.Component;

import javax.persistence.PostPersist;

import javax.persistence.PostUpdate;

import javax.persistence.PrePersist;

import javax.persistence.PreUpdate;

public class TestEntityListeners {

     @PrePersist

     public void PrePersist(Object entity){

         System.out.println( "开始保存--" +entity.toString());

     }

     @PreUpdate

     public void PreUpdate(Object entity){

         System.out.println( "开始更新--" +entity.toString());

     }

     @PostPersist

     public void PostPersist(Object entity){

         System.out.println( "结束保存--" +entity.toString());

     }

        @PostUpdate

     public void PostUpdate(Object entity){

         System.out.println( "结束更新--" +entity.toString());

     }

}

@EntityListeners (value = {TestEntityListeners. class })

@Entity

@Table (name = "product" )

@EntityListeners (value = {TestEntityListeners. class })

public class Product {

     private int id;

     private String productId;

     private String productName;

     //getter setter toString()

}

import com.goods.evaluate.entity.Product;

import com.goods.evaluate.service.TestService1;

import com.goods.evaluate.repository.ProductRepository;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Transactional;

import java.util.Optional;

@Service

public class TestService implements TestService1 {

     @Autowired

     private ProductRepository productRepository;

     @Transactional

     public void testSave(){

         Optional<Product> product = productRepository.findById( 10 );

         productRepository.save(product.orElse( null ));

         System.out.println( "保存。。。" );

     }

     @Transactional

     public void testUpdate(){

         productRepository.updateProduct( "test10" );

         System.out.println( "更新。。。" );

     }

}

@SpringBootApplication

@EnableSpringConfigured

@EnableJpaAuditing

@EnableAspectJAutoProxy (proxyTargetClass= true )

public class EvaluateApplication {

     public static void main(String[] args) {

         SpringApplication.run(EvaluateApplication. class , args);

     }

}

//AuditorAware 实现类，指定当前操作用户信息

@Configuration

public class UserAuditorConfig implements AuditorAware<String> {

     @Override

     public Optional<String> getCurrentAuditor() {

         return Optional.of(SpringSecurityHolder.currentUserName());

     }

}