Question

我正在尝试将ehcache（v2.6.0）添加到我的Hibernate 4.1.5.SP1项目中，但遇到了一些配置问题。具体来说，当我尝试使用

构建java.lang.NoClassDefFoundError配置时出现org/hibernate/cache/EntityRegion：Hibernate错误

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

这是我的 Maven 依赖项......

    <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>

这是我用来配置它的Java代码......

    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);

这是可怕的错误。我错过了什么配置？

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

Answer 1

ehcache-core文件基本上适用于Hibernate 3.x. Hibernate 4.x附带了自己的ehcache实现。您不需要在hibernate 4.x中明确使用ehcache。这是您问题的最佳答案。

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

Answer 2

我检查了maven的依赖关系。当加载hibernate-ehcache包时，Maven总是加载ehcache-code。

依赖树：

+--- 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

请检查您的持久性配置。它不应包含包名称以“net.sf”

开头的任何类

例如，您必须在代码中替换以下字符串：

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

使用以下字符串：

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

Answer 3

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

对于Hibernate 4，请使用

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

Hibernate Configuration Article

Answer 4

从Hibernate 4开始，新的hibernate-cache引入了缓存。这需要最新的net.sf.ehcache依赖性高达2.6。以下文章将CLICK ON LINK。当我在我的pom中添加以下依赖项时，错误将删除：

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

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

4 个答案: