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我正在尝试设置 Mule 以使用 Mule JPA 模块（http://mulesoft.github.io/mule-module-jpa/mule/jpa.html），但我遇到了依赖问题。

我已经通过 Mule Studio 添加了 JPA 模块，它为此设置了 maven 依赖项。我还在我的 pom 中添加了 hibernate-entitymanager 依赖项以提供 JPA 实现。我添加了与 Mule 运行时中包含的 hibernate-core 版本相同的 3.6.0 版本。但是，当我尝试启动 Mule 应用程序时，我得到以下堆栈跟踪：

INFO  2013-08-30 09:33:20,428 [main] org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean: Building JPA container EntityManagerFactory for persistence unit 'org.jembi.openhim.jpa'
INFO  2013-08-30 09:33:20,525 [main] org.hibernate.annotations.common.Version: Hibernate Commons Annotations 3.2.0.Final
INFO  2013-08-30 09:33:20,530 [main] org.hibernate.cfg.Environment: Hibernate 3.6.0.Final
INFO  2013-08-30 09:33:20,531 [main] org.hibernate.cfg.Environment: hibernate.properties not found
INFO  2013-08-30 09:33:20,533 [main] org.hibernate.cfg.Environment: Bytecode provider name : javassist
INFO  2013-08-30 09:33:20,536 [main] org.hibernate.cfg.Environment: using JDK 1.4 java.sql.Timestamp handling
INFO  2013-08-30 09:33:20,594 [main] org.hibernate.ejb.Version: Hibernate EntityManager 3.6.0.Final
ERROR 2013-08-30 09:33:20,609 [main] org.mule.module.launcher.application.DefaultMuleApplication: null
java.lang.IllegalAccessError: tried to access method org.hibernate.engine.CascadeStyle.<init>()V from class org.hibernate.engine.EJB3CascadeStyle$1
    at org.hibernate.engine.EJB3CascadeStyle$1.<init>(EJB3CascadeStyle.java:44)
    at org.hibernate.engine.EJB3CascadeStyle.<clinit>(EJB3CascadeStyle.java:39)
    at org.hibernate.ejb.event.EJB3PersistEventListener.<clinit>(EJB3PersistEventListener.java:39)
    at org.hibernate.ejb.EventListenerConfigurator.<init>(EventListenerConfigurator.java:101)
    at org.hibernate.ejb.Ejb3Configuration.<init>(Ejb3Configuration.java:159)
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:72)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:288)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1545)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1483)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:524)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1117)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:922)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    at org.mule.config.spring.SpringRegistry.doInitialise(SpringRegistry.java:89)
    at org.mule.registry.AbstractRegistry.initialise(AbstractRegistry.java:109)
    at org.mule.config.spring.SpringXmlConfigurationBuilder.createSpringRegistry(SpringXmlConfigurationBuilder.java:119)
    at org.mule.config.spring.SpringXmlConfigurationBuilder.doConfigure(SpringXmlConfigurationBuilder.java:73)
    at org.mule.config.builders.AbstractConfigurationBuilder.configure(AbstractConfigurationBuilder.java:46)
    at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure(AbstractResourceConfigurationBuilder.java:78)
    at org.mule.config.builders.AutoConfigurationBuilder.autoConfigure(AutoConfigurationBuilder.java:101)
    at org.mule.config.builders.AutoConfigurationBuilder.doConfigure(AutoConfigurationBuilder.java:57)
    at org.mule.config.builders.AbstractConfigurationBuilder.configure(AbstractConfigurationBuilder.java:46)
    at org.mule.config.builders.AbstractResourceConfigurationBuilder.configure(AbstractResourceConfigurationBuilder.java:78)
    at org.mule.context.DefaultMuleContextFactory.createMuleContext(DefaultMuleContextFactory.java:84)
    at org.mule.module.launcher.application.DefaultMuleApplication.init(DefaultMuleApplication.java:207)
    at org.mule.module.launcher.application.ApplicationWrapper.init(ApplicationWrapper.java:64)
    at org.mule.module.launcher.DefaultMuleDeployer.deploy(DefaultMuleDeployer.java:47)
    at org.mule.tooling.server.application.ApplicationDeployer.run(ApplicationDeployer.java:58)
    at org.mule.tooling.server.application.ApplicationDeployer.main(ApplicationDeployer.java:91)

似乎存在版本不匹配或导致此问题的原因，但我无法弄清楚原因。我使用与休眠核心相同版本的实体管理器。知道我可以尝试什么吗？

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1 回答 1

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${MULE_HOME}/lib/opt 的 Mule 发行版包含 Hibernate 核心 jar，但它没有 Hibernate Entity Manager jar。如果您在类路径中包含相同的 jar，它将尝试从 /lib/opt jar 访问休眠的核心类，但是，它会给出 IllegalAccessError，因为它已由 diff 类加载器加载。因此，请尝试从 /lib/opt 文件夹中删除 Mule 提供的 Hibernate jar，并通过您用于项目的任何方式添加您自己的 [构建路径或 pom 等]。

我想它应该工作。

-香基·G。

于 2015-12-01T17:55:31.210 回答