在Springboot + JPA存储库中使用二级缓存

Question

我使用 Spring Boot 配置作为我的主表的二级缓存。我没有在 Spring Boot 中配置二级缓存。需要了解缓存是如何完成的以及检索是如何完成的。

这是我的 Application.java 类（SpringBootServletinitializer）。我添加了一个测试方法 allCodeValues() 只是为了验证我是否只触发一次休眠查询。但我看到查询被触发了两次，因此表明存储库调用未缓存在休眠中。请帮助我为 EhCaching 进行 SpringBoot 的准确配置...

public class Application extends SpringBootServletInitializer {
public static void main(String[] args) throws Exception{        

    SpringApplication.run(Application.class, args);      
}

@Autowired
WorkflowListRepository wflListRepo;

@Bean(name="getAllCodeValue")
public List<WorkFlowList> allcodeValues(){

    List<WorkFlowList> wflList= wflListRepo.getAllDocuments();

    wflList= wflListRepo.getAllDocuments();

    return wflList;
}

}

下面是JPA持久化的配置

@Bean(name = "entityManagerFactory")
@Primary
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean() {

     LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
     entityManagerFactoryBean.setJpaVendorAdapter(vendorAdaptor());
     entityManagerFactoryBean.setDataSource(dataSource());
     entityManagerFactoryBean.setPersistenceProviderClass(HibernatePersistenceProvider.class);
     entityManagerFactoryBean.setJpaProperties(jpaHibernateProperties());

     return entityManagerFactoryBean;
 }


  private Properties jpaHibernateProperties() {

     Properties properties = new Properties();

     properties.put(PROPERTY_NAME_HIBERNATE_SHOW_SQL, env.getProperty(PROPERTY_NAME_HIBERNATE_SHOW_SQL));

     properties.put(PROPERTY_NAME_HIBERNATE_DIALECT,env.getProperty(PROPERTY_NAME_HIBERNATE_DIALECT));
     properties.put(PROPERTY_NAME_HIBERNATE_HBM_AUTO,env.getProperty(PROPERTY_NAME_HIBERNATE_HBM_AUTO));    
     properties.put("spring.jpa.properties.hibernate.cache.use_second_level_cache", "true");
      properties.put("hibernate.cache.region.factory_class", "org.hibernate.cache.ehcache.EhCacheRegionFactory");
     properties.put("hibernate.cache.default_cache_concurrency_strategy", "NONSTRICT_READ_WRITE");
     properties.put("hibernate.cache.region_prefix", "valCache");
     properties.put("javax.persistence.sharedCache.mode", "ALL");

}

我使用 JPARepository 与实体进行通信...这里我使用 WorklfowRepository 来获取二级缓存中的数据..

@Repository
public interface WorkflowListRepository extends JpaRepository<WorkFlowList, String>{


public List<WorkFlowList> getAllDocuments();
}

在实体中，我添加了注释 @Cacheable 和 @Cache ，如下所示

@Entity
@Cacheable
@Cache(usage=CacheConcurrencyStrategy.READ_ONLY)
@Table(name = "WORKFLOW_LIST")
@Access(AccessType.FIELD)
@NamedQuery(name="WorkFlowList.getAllDocuments",query = "from WorkFlowList work")
public class WorkFlowList implements in.vit.leasing.generic.entity.Entity<WorkFlowList>{
.......
}