java.lang.NoClassDefFoundError: org/hibernate/cache/EntityRegion configuring EHCache

问题

I'm trying to add ehcache (v2.6.0) to my Hibernate 4.1.5.SP1 project, but having some configuration issues. Specifically, I'm getting a java.lang.NoClassDefFoundError: org/hibernate/cache/EntityRegion error when I try and build my Hibernate configuration with

    <property name="hibernate.cache.use_second_level_cache">true</property>
<property name="hibernate.cache.region.factory_class">net.sf.ehcache.hibernate.EhCacheRegionFactory</property>

Here's my Maven dependencies ...

    <hibernate.version>4.1.5.SP1</hibernate.version>
    <hibernate.validator.version>4.3.0.Final</hibernate.validator.version>
    <ehcacheVersion>2.6.0</ehcacheVersion>
    ...
    <!-- Hibernate dependencies -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>${hibernate.validator.version}</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache-core</artifactId>
        <version>${ehcacheVersion}</version>
    </dependency>

Here's the Java code I use to configure it ...

    Configuration config = new Configuration()
        .setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect")
        .setProperty("hibernate.connection.driver_class", "org.hsqldb.jdbcDriver")
        .setProperty("hibernate.connection.url", "jdbc:hsqldb:mem:myprojectTestDb")
        .setProperty("hibernate.connection.username", "sa")
        .setProperty("hibernate.connection.password", "")
        .setProperty("hibernate.connection.pool_size", "1")
        .setProperty("hibernate.connection.autocommit", "true")
        .setProperty("hibernate.cache.provider_class", "org.hibernate.cache.HashtableCacheProvider")
        .setProperty("hibernate.hbm2ddl.auto", "create-drop")
        .setProperty("hibernate.show_sql", "true")
        .setProperty("hibernate.current_session_context_class", "thread")
        .setProperty("hibernate.cache.use_second_level_cache", "true")
        .setProperty("hibernate.cache.region.factory_class", "net.sf.ehcache.hibernate.EhCacheRegionFactory")
        .addAnnotatedClass(Organization.class)
        .addAnnotatedClass(State.class) 
        .addAnnotatedClass(Country.class)
        .addAnnotatedClass(Domain.class)
        .addAnnotatedClass(Community.class);
    final ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
    sessionFactory = config.buildSessionFactory(serviceRegistry);

and here's the hideous error. WHat configuration am I missing?

java.lang.NoClassDefFoundError: org/hibernate/cache/EntityRegion
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    at java.lang.Class.getConstructor0(Unknown Source)
    at java.lang.Class.getConstructor(Unknown Source)
    at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:386)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:251)
    at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2270)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2266)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1735)
    at org.mainco.subco.orgsclient.service.OrganizationServiceTest.setupOrgServiceTest(OrganizationServiceTest.java:56)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.ClassNotFoundException: org.hibernate.cache.EntityRegion
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 32 more

回答1:

ehcache-core files are basically for Hibernate 3.x. Hibernate 4.x comes with its own implementation for ehcache. You don't need to use ehcache explicitly in hibernate 4.x. Here is the best answer for your problem.

http://web.archive.org/web/20130117102553/http://www.javacraft.org/2012/03/migrate-to-hibernate-4-ehcache.html

回答2:

I checked maven the dependencies. Maven always loads ehcache-code when the hibernate-ehcache package is loaded.

Dependency tree:

+--- org.hibernate:hibernate-ehcache:4.3.0.Final
|    +--- org.jboss.logging:jboss-logging:3.1.3.GA
|    +--- org.jboss.logging:jboss-logging-annotations:1.2.0.Beta1
|    +--- org.hibernate:hibernate-core:4.3.0.Final (*)
|    \--- net.sf.ehcache:ehcache-core:2.4.3
|         \--- org.slf4j:slf4j-api:1.6.1 -> 1.6.6

Please check your persistence configuration. It should not include any classes where the package name starts with "net.sf"

For example, you have to replace the following string in your code:

.setProperty("hibernate.cache.region.factory_class", "net.sf.ehcache.hibernate.EhCacheRegionFactory")

with the following string:

.setProperty("hibernate.cache.region.factory_class", "org.hibernate.cache.ehcache.EhCacheRegionFactory")

回答3:

Configuration.setProperty("hibernate.cache.region.factory_class", 
                     "net.sf.ehcache.hibernate.EhCacheRegionFactory")

For Hibernate 4, use

org.hibernate.cache.ehcache.EhCacheRegionFactory instead of net.sf.ehcache.hibernate.EhCacheRegionFactory

Hibernate Configuration Article

回答4:

From Hibernate 4, there s new hibernate-cache introduce for caching. This need latest dependency for net.sf.ehcache upto 2.6. Following article will CLICK ON LINK. When i add following dependency in my pom, the error will remove:

    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache</artifactId>
        <version>2.8.3</version>
    </dependency>

来源：https://stackoverflow.com/questions/11905722/java-lang-noclassdeffounderror-org-hibernate-cache-entityregion-configuring-ehc