Question

我有一个客户端和服务器设置与JBoss AS 7.1.1一起运行，我对我的persistence.xml有疑问。目前它看起来像这样：

<persistence>
    <persistence-unit name="GrahamsProj">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:jboss/datasources/WorkCenterDS</jta-data-source>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/>
        </properties>
    </persistence-unit>
</persistence>

我的服务器的META-INF文件夹中有persistence.xml。我必须遗漏一些属性，因为当我尝试查询我连接的数据库时，我收到此错误。

11:35:07,840 ERROR [org.jboss.ejb3.invocation] (EJB default - 1) JBAS014134: 
EJB Invocation failed on component GrahamsProjBean for method public abstract 
void grahamsprojserver.session.interfaces.GrahamsProjBeanRemote.test(): javax.ejb.EJB
Exception: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: 
Schemas is not mapped [FROM Schemas s]

我有什么遗失的吗？

Answer 1

您需要在persistence.xml中包含所有模型类。例如：

<persistence>
    <persistence-unit name="GrahamsProj">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:jboss/datasources/WorkCenterDS</jta-data-source>
        <class>your.class.model.Example</class>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/>
        </properties>
    </persistence-unit>
</persistence>

Answer 2

您可能还需要更新hibernate.dialect属性。在您的示例中，您正在使用＆＃34; org.hibernate.dialect.HSQLDialect＆＃34;并且您使用Oracle驱动程序，例如＆＃34; oracle.jdbc.OracleDriver＆＃34 ;.如果您使用的是Oracle数据库，则需要更新hibernate方言，例如：＆＃34; org.hibernate.dialect.Oracle10gDialect＆＃34;

这是您的更新代码：

<persistence>
    <persistence-unit name="GrahamsProj">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:jboss/datasources/WorkCenterDS</jta-data-source>
        <class>your.class.model.Example</class>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.connection.driver_class" value="oracle.jdbc.OracleDriver"/>
        </properties>
    </persistence-unit>
</persistence>

JBoss AS 7.1.1的Persistence.xml

2 个答案: