我正在尝试使用EhCache启用二级缓存,但在我的服务器启动时遇到问题。当我为我的DTO类指定@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)时,我收到以下错误:
16:20:42,882 ERROR [org.jboss.as.controller.management-operation] (控制器引导线程)JBAS014612:操作(“部署”)失败 - 地址:([(“deploy ment”=>“PORTAL.ear”)]) - 失败描述: {“JBAS014671:失败的服务”=> {“jboss.persistenceunit。\”PORTAL.ear#AppPU \“”=> “org.jb 服务中的oss.msc.service.StartException jboss.persistenceunit \ “PORTAL.ear#AppPU \”: javax.persistence.PersistenceException:[PersistenceUnit:AppPU] 无法构建EntityManagerFactory 引起:javax.persistence.PersistenceException:[PersistenceUnit:AppPU]无法构建EntityManagerFactory 引起:org.hibernate.cache.CacheException:不支持的访问类型[读写]“}}
如果我使用CacheConcurrencyStrategy.READ_ONLY,我没有遇到任何启动问题。
以下是我的persistence.xml:
<persistence-unit name="AppPU" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:jboss/myDS</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
<!-- Auto-detect entity classes -->
<property name="hibernate.archive.autodetection" value="class, hbm"/>
<!-- Print sql executed - useful for debugging -->
<property name="hibernate.show_sql" value="false"/>
<property name="hibernate.format_sql" value="false"/>
<!-- Properties for Hibernate -->
<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.cache.provider_class" value="net.sf.Ehcache.hibernate.SingletonEhcacheProvider"/>
<!-- <property name="hibernate.cache.region.factory_class" value="net.sf.ehcache.hibernate.EhCacheRegionFactory"/> -->
<property name="net.sf.Ehcache.configurationResourceName" value="/ehcache.xml"/>
<property name="hibernate.cache.use_query_cache" value="true"/>
<property name="hibernate.cache.use_second_level_cache" value="true"/>
<property name="hibernate.generate_statistics" value="true"/>
</properties>
</persistence-unit>
我想使用READ_WRITE来启用二级缓存。
有人可以帮我解决这个问题吗?在此先感谢。
答案 0 :(得分:0)
要配置ehcache,您需要执行两个步骤:
为第二级缓存配置Hibernate 指定二级缓存提供程序
Hibernate 4.x及以上
<property key="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
Hibernate 3.3及以上
<property key="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.factory_class">net.sf.ehcache.hibernate.EhCacheRegionFactory</property>
Hibernate 3.2及以下
<property key="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.provider_class">net.sf.ehcache.hibernate.EhCacheProvider</property>
<强> reference 强>