Java Hibernate 3.2.0最终版中的二级缓存

我一直面临使用二级缓存的问题。以下是找出问题所在所需的来源

hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>

堆栈跟踪

log4j:WARN No appenders could be found for logger    (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
org.hibernate.HibernateException: could not instantiate RegionFactory   [org.hibernate.cache.ehcache.EhCacheRegionFactory]
at          org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:402)
at    org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:270)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2163)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2159)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1383)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:954)
at com.example.dao.HibernateSessionFactory.getSessionFactory(HibernateSessionFactory.java:11)
at com.example.control.Main.main(Main.java:12)
Caused by: java.lang.ClassNotFoundException: org.hibernate.cache.ehcache.EhCacheRegionFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:397)
... 7 more

---

无法创建会话工厂假定它是基于maven的项目，请在pom.xml中添加以下依赖项：

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-ehcache</artifactId>
    <version>4.0.1.Final</version>
</dependency>

org.hibernate
休眠ehcache
4.0.1.最终版本

错误的主要原因是

ClassNotFoundException:org.hibernate.cache.ehcache.EhCacheRegionFactory

。您是否包含了EHCache支持所需的库？另外，如果您正在启动一个新项目，为什么要使用完全过时的版本3.2？从最新版本开始。并使用注释来定义映射。

log4j:WARN No appenders could be found for logger    (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
org.hibernate.HibernateException: could not instantiate RegionFactory   [org.hibernate.cache.ehcache.EhCacheRegionFactory]
at          org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:402)
at    org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:270)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2163)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2159)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1383)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:954)
at com.example.dao.HibernateSessionFactory.getSessionFactory(HibernateSessionFactory.java:11)
at com.example.control.Main.main(Main.java:12)
Caused by: java.lang.ClassNotFoundException: org.hibernate.cache.ehcache.EhCacheRegionFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:397)
... 7 more

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-ehcache</artifactId>
    <version>4.0.1.Final</version>
</dependency>