Hibernate4 + Ehcache 配置问题
1、遇到的问题：
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Caused by: org.hibernate.cache.NoCacheRegionFactoryAvailableException: Second-level cache is used in the application, but property hibernate.cache.region.factory_class is not given, please either disable second level cache or set correct region factory class name to property hibernate.cache.region.factory_class (and make sure the second level cache provider, hibernate-infinispan, for example, is available in the classpath).at org.hibernate.cache.internal.NoCachingRegionFactory.buildTimestampsRegion(NoCachingRegionFactory.java:87)at org.hibernate.cache.spi.UpdateTimestampsCache.<init>(UpdateTimestampsCache.java:63)at org.hibernate.internal.CacheImpl.<init>(CacheImpl.java:72)at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:40)at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:35)at org.hibernate.service.internal.SessionFactoryServiceRegistryImpl.initiateService(SessionFactoryServiceRegistryImpl.java:91)at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:176)... 25 more
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?解决办法：
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在网上查了资料，了解hibernate4.0在hibernate.cfg.xml配置二级缓存和hibernate3.3有所不同,本例子用的是 Hibernate-core.4.1.7.Final+ ehcache-core.2.6.0，用query的话就要配置查询缓存喽
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4.0配置如下：
<property name="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
3.3配置如下：
<property name="hibernate.cache.use_second_level_cache">true</property>
<property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
完整的二级缓存配置：配置之前先拷贝一个ehcache.xml文件到src文件下
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需要在pom.xml中添加
<dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <version>4.1.7.Final</version></dependency>
?否则会报错：
Unable to load class [org.hibernate.cache.ehcache.EhCacheRegionFactory]
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