Question

我正在尝试使用MySQL后端创建一个简单的Web应用程序。我能够在Geronimo中部署我的.ear。但是，当我提交表单以通过OpenJPA将某些内容保存到数据库时，我收到以下错误（下面是我的堆栈跟踪）：

引起：org.apache.openjpa.persistence.ArgumentException：必须在ConnectionDriverName属性中指定JDBC驱动程序或DataSource类名。

我的项目是一个企业应用程序项目（AReyes），带有一个Web模块（AReyesAdminWeb）和一个ejb模块（AReyesEJB）。

我的persistence.xml

<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0">
    <persistence-unit name="AReyesPersistUnit" transaction-type="JTA">
        <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
        <jta-data-source>AReyesMySql</jta-data-source>
        <class>com.areyes.entity.Admin</class>
        <properties>
            <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema"/>
        </properties>
    </persistence-unit>
</persistence>

该文件位于AReyesEJB / ejbModule / META-INF

我正在使用

带有Tomcat 6的Geronimo 2.2.1
MySQL 5.5.11
OpenJPA 1.2.2
Eclipse Indego Release
OS X 10.6.7

栈跟踪

Caused by: org.apache.openejb.OpenEJBException: Error while creating bean com.areyes.session.AdminManager: Error invoking constructor: public com.areyes.session.AdminManager()
    at org.apache.openejb.InjectionProcessor.construct(InjectionProcessor.java:120)
    at org.apache.openejb.InjectionProcessor.createInstance(InjectionProcessor.java:83)
    at org.apache.openejb.core.stateless.StatelessInstanceManager.ceateInstance(StatelessInstanceManager.java:204)
    at org.apache.openejb.core.stateless.StatelessInstanceManager.getInstance(StatelessInstanceManager.java:165)
    at org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
    at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:217)
    at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:77)
    at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:282)
    ... 23 more
Caused by: org.apache.xbean.recipe.ConstructionException: Error invoking constructor: public com.areyes.session.AdminManager()
    at org.apache.xbean.recipe.ReflectionUtil$ConstructorFactory.create(ReflectionUtil.java:962)
    at org.apache.xbean.recipe.ObjectRecipe.internalCreate(ObjectRecipe.java:276)
    at org.apache.xbean.recipe.AbstractRecipe.create(AbstractRecipe.java:96)
    at org.apache.xbean.recipe.AbstractRecipe.create(AbstractRecipe.java:61)
    at org.apache.openejb.InjectionProcessor.construct(InjectionProcessor.java:118)
    ... 30 more
Caused by: <openjpa-1.2.2-r422266:898935 fatal user error> org.apache.openjpa.persistence.ArgumentException: A JDBC Driver or DataSource class name must be specified in the ConnectionDriverName property.
    at org.apache.openjpa.jdbc.schema.DataSourceFactory.newDataSource(DataSourceFactory.java:74)
    at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.createConnectionFactory(JDBCConfigurationImpl.java:784)
    at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:561)
    at org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1344)
    at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:505)
    at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:430)
    at org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:103)
    at org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
    at org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
    at org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:863)
    at org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:854)
    at org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:638)
    at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:183)
    at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
    at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
    at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
    at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:56)
    at com.areyes.session.AdminManager.<init>(AdminManager.java:22)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.apache.xbean.recipe.ReflectionUtil$ConstructorFactory.create(ReflectionUtil.java:952)
    ... 34 more

com.areyes.session.AdminManager是一个@Stateless bean，它已被注入到AReyesAdminWeb中的一个servlet中（带有@EJB anno）。这是建设者：

@Stateless
public class AdminManager implements AdminService {
    private EntityManagerFactory fac;
    private EntityManager em;

    public AdminManager () {
        fac = Persistence.createEntityManagerFactory("AReyesPersistUnit", System.getProperties());
        em = fac.createEntityManager();
    }

我的网络应用程序似乎不知道我的ejb应用程序中的persistence.xml。我想知道我是否正确捆绑了所有内容。

我将此添加到我的application.xml：

  <module>
    <connector>tranql-connector-mysql-local-1.5.rar</connector>
  </module>

然后我将其添加到我的geronimo-application.xml：

<app:module>
    <app:connector>tranql-connector-mysql-local-1.5.rar</app:connector>
    <app:alt-dd>mysql-plan.xml</app:alt-dd>
</app:module>

在我的EA项目（AReyes）中，我在与META-INF相同的文件夹中添加了mysql-plan.xml。然后我从我的Geronimo文件夹导入了tranql-connector-mysql-local-1.5.rar。

Answer 1

听起来Web应用程序无法在其类路径中找到persistence.xml。从阅读this thread开始，您可能遇到同样的问题。尝试将persistence.xml移动到以下位置，看看你如何去...

WEB-INF/classes/META-INF/persistence.xml

ArgumentException：JDBC驱动程序或DataSource类

我的persistence.xml

我正在使用

栈跟踪

1 个答案: