持久化部署问题
我有一个 hibernate 项目,它使用 JPA。
我的 persistence.xml 内容如下:
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="Demo-PU" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<non-jta-data-source>java:/DemoDS</non-jta-data-source>
<class>com.demo.framework.entity.ReportDefinitionEntity</class>
<properties>
<!-- Database connection -->
<property name="hibernate.connection.url" value="jdbc:mysql://192.168.9.110:3306/demoDB" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="root" />
<!-- Hibernate dialect -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<!-- Output goodies
-->
<property name="hibernate.query.jpaql_strict_compliance" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.use_sql_comments" value="false" />
<!-- Cache
-->
<property name="hibernate.jdbc.batch_versioned_data" value="true" />
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider" />
</properties>
</persistence-unit>
</persistence>
现在,当我使用 eclipse 运行它时,我没有问题,但是当我在 Jboss 中部署它时,出现以下错误:
错误[AbstractKernelController]错误 安装到开始: name=persistence.unit:unitName=#Demo-PU 状态=创建 java.lang.ClassCastException: org.hibernate.ejb.HibernatePersistence 无法投射到 javax.persistence.spi.PersistenceProvider
这是我拥有的 Jar 列表
activation.jar
antlr-2.7.6.jar
asm-attrs.jar
asm.jar
cglib-2.1.3.jar
commons-collections-2.1.1.jar
commons-logging-1.1.jar
dom4j-1.6.1.jar
ehcache-1.2.3.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate-entitymanager.jar
hibernate-tools.jar
hibernate3.jar
javassist.jar
javax.persistence.jar
jdbc2_0-stdext.jar
jta.jar
mysql-connector-java-5.0.5-bin.jar
xml-writer.jar
如何解决此问题?
I have a hibernate project, which uses JPA.
my persistence.xml contents is as follows:
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="Demo-PU" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<non-jta-data-source>java:/DemoDS</non-jta-data-source>
<class>com.demo.framework.entity.ReportDefinitionEntity</class>
<properties>
<!-- Database connection -->
<property name="hibernate.connection.url" value="jdbc:mysql://192.168.9.110:3306/demoDB" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="root" />
<!-- Hibernate dialect -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<!-- Output goodies
-->
<property name="hibernate.query.jpaql_strict_compliance" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.use_sql_comments" value="false" />
<!-- Cache
-->
<property name="hibernate.jdbc.batch_versioned_data" value="true" />
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider" />
</properties>
</persistence-unit>
</persistence>
Now when I run it using eclipse I don't have a problem, but when I deploy it in Jboss, I get the below error:
ERROR [AbstractKernelController] Error
installing to Start:
name=persistence.unit:unitName=#Demo-PU
state=Create
java.lang.ClassCastException:
org.hibernate.ejb.HibernatePersistence
cannot be cast to
javax.persistence.spi.PersistenceProvider
And here is the list of Jar that I have
activation.jar
antlr-2.7.6.jar
asm-attrs.jar
asm.jar
cglib-2.1.3.jar
commons-collections-2.1.1.jar
commons-logging-1.1.jar
dom4j-1.6.1.jar
ehcache-1.2.3.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate-entitymanager.jar
hibernate-tools.jar
hibernate3.jar
javassist.jar
javax.persistence.jar
jdbc2_0-stdext.jar
jta.jar
mysql-connector-java-5.0.5-bin.jar
xml-writer.jar
How can I resolve this issue?
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ClassCastException
是由于您的系统中存在两份javax.persistence
API 副本(一份位于 JBoss 提供的公共类加载器中,一份位于您的应用程序中)引起的。当在 JBoss 上运行时,您不应该在应用程序中提供此 API,也不要打包它。顺便说一句,您似乎正在使用 JPA 2.0
persistence.xml
但我不相信您正在使用 Hibernate 的 JPA 2.0 实现(实际上,您似乎正在使用一个相当旧的版本,因为我可以看到commons-logging.jar
)。您可能应该修复该问题,即使用 1.0 版本的persistence.xml
。实际上,在 JBoss 上运行时您很可能应该使用不同的persistence.xml(使用 JTA 实体管理器和 jta-data-source)。而且混合使用数据源和 Hibernate 内置连接池似乎很奇怪。
The
ClassCastException
is caused by having two copies of thejavax.persistence
APIs in your system (one in the common classloader provided by JBoss and the one in your app). When running on JBoss, you are just not supposed to provide this API in your application, don't package it.By the way, it seems you're using a JPA 2.0
persistence.xml
but I'm not convinced you're using the JPA 2.0 implemenation of Hibernate (actually, you seem to be using a pretty old version since I can seecommons-logging.jar
). You should probably fix that i.e. use the 1.0 version ofpersistence.xml
.Actually, you should very likely use a different
persistence.xml
when running on JBoss (using a JTA entity manager and ajta-data-source
). And it seems weird to mix data source usage and Hibernate built-in connection pool.