使用 Spring 休眠二级缓存 [英] Hibernate second level cache with Spring

查看:19
本文介绍了使用 Spring 休眠二级缓存的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在使用 Spring + JPA + Hibernate.我正在尝试启用 Hibernate 的二级缓存.在我的 Spring 的 applicationContext.xml 中,我有:

I'm using Spring + JPA + Hibernate. I'm trying to enable Hibernate's second level cache. In my Spring's applicationContext.xml I have:

<prop key="hibernate.cache.provider_class">net.sf.ehcache.hibernate.SingletonEhCacheProvider</prop>
<prop key="hibernate.cache.provider_configuration_file_resource_path">/ehcache.xml</prop>

运行时出现错误:

Caused by: org.hibernate.HibernateException: Could not instantiate cache implementation
     at org.hibernate.cache.CacheFactory.createCache(CacheFactory.java:64)

Caused by: org.hibernate.cache.NoCachingEnabledException: Second-level cache is not enabled for usage [hibernate.cache.use_second_level_cache | hibernate.cache.use_query_cache]
     at org.hibernate.cache.NoCacheProvider.buildCache(NoCacheProvider.java:21) 

所以抱怨我没有启用二级缓存.我尝试通过添加到我的 applicationContext.xml 来启用它:

So it's complain I don't have second level cache enabled. I attempt to enable it by adding to my applicationContext.xml:

<prop key="hibernate.cache.use_second_level_cache">true</prop>

但仍然没有快乐.我也尝试将它添加到我的 ehcache.xml:

But still no joy. I also tried adding this to my ehcache.xml:

<property name="hibernate.cache.use_second_level_cache">true</property>

但是还是不行.将 provider_class 更改为 org.hibernate.cache.EhCacheProvider 也无济于事:

But it still doesn't work. Changing the provider_class to org.hibernate.cache.EhCacheProvider doesn't help either:

<prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>

我的实体类被注释为使用缓存

My entity classes are annotated to use caching

@Cache(usage=CacheConcurrencyStrategy.READ_ONLY)

那么,如何启用二级缓存?

So, how do I enable second level cache?

这是在bean下:

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">

已解决:由于我使用的是 LocalEntityManagerFactoryBean,它从 META-INF/persistence.xml 获取其设置.我在 applicationContext.xml 中的设置甚至没有被读取.

Resolved: Since I'm using LocalEntityManagerFactoryBean it gets its settings from META-INF/persistence.xml. My settings in applicationContext.xml weren't even being read.

推荐答案

我没有回答这个问题,但发帖人自己找到了答案并不明显.我正在转发他的回答:

I didn't answer this, but it's not obvious that the poster found the answer himself. I'm reposting his answer:

由于我使用的是 LocalEntityManagerFactoryBean,它从 META-INF/persistence.xml 获取其设置.我在 applicationContext.xml 中的设置甚至没有被读取.

Since I'm using LocalEntityManagerFactoryBean it gets its settings from META-INF/persistence.xml. My settings in applicationContext.xml weren't even being read.

这篇关于使用 Spring 休眠二级缓存的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆