Question

我正在处理涉及hibernate的应用程序。我在调用我的应用程序时收到此异常：

org.hibernate.boot.registry.classloading.spi.ClassLoadingException：无法加载类[oracle.jdbc.driver.Oracle Driver] org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName（ClassLoaderServiceImpl.java:245）在 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible（DriverManagerConnectionProviderImpl.java:200）在 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator（DriverManagerConnectionProviderImpl.java:156）在 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure（DriverManagerConnectionProviderImpl.java:95）在 org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:111）在 org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:234）在 org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:206）在 org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess（JdbcServicesImpl.java:260）在 org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure（JdbcServicesImpl.java:94）在 org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:111）在 org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpl.java:234）在 org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:206）在 org.hibernate.cfg.Configuration.buildTypeRegistrations（Configuration.java:1887）在 org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:1845）在 com.infy.EPP.resources.HibernateUtility.createSessionFactory（HibernateUtility.java:36）在 com.infy.EPP.dao.BankLocationDAOImpl.getListOfBanks（BankLocationDAOImpl.java:27）在 com.infy.EPP.business.service.BankLocationServiceImpl.getListOfBanks（BankLocationServiceImpl.java:20）在 com.infy.EPP.web.managedbeans.BankLocationBean。（BankLocationBean.java:53） at sun.reflect.NativeConstructorAccessorImpl.newInstance0（Native 方法）at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62）在 sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45） at java.lang.reflect.Constructor.newInstance（Constructor.java:408）在java.lang.Class.newInstance（Class.java:433）at com.sun.faces.mgbean.BeanBuilder.newBeanInstance（BeanBuilder.java:186）在com.sun.faces.mgbean.BeanBuilder.build（BeanBuilder.java:100）at com.sun.faces.mgbean.BeanManager.createAndPush（BeanManager.java:409）在com.sun.faces.mgbean.BeanManager.create（BeanManager.java:269）at com.sun.faces.el.ManagedBeanELResolver.resolveBean（ManagedBeanELResolver.java:257）在 com.sun.faces.el.ManagedBeanELResolver.getValue（ManagedBeanELResolver.java:117）在 com.sun.faces.el.DemuxCompositeELResolver._getValue（DemuxCompositeELResolver.java:176）在 com.sun.faces.el.DemuxCompositeELResolver.getValue（DemuxCompositeELResolver.java:203）在org.apache.el.parser.AstIdentifier.getValue（AstIdentifier.java:71）在org.apache.el.parser.AstValue.getValue（AstValue.java:160）at org.apache.el.parser.AstEqual.getValue（AstEqual.java:37）at org.apache.el.ValueExpressionImpl.getValue（ValueExpressionImpl.java:184）在 org.apache.jasper.el.JspValueExpression.getValue（JspValueExpression.java:106）在 javax.faces.component.ComponentStateHelper.eval（ComponentStateHelper.java:194）在 javax.faces.component.UIComponentBase.isRendered（UIComponentBase.java:457）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1850）在javax.faces.render.Renderer.encodeChildren（Renderer.java:176）at javax.faces.component.UIComponentBase.encodeChildren（UIComponentBase.java:889）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1856）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1859）在 com.sun.faces.application.view.JspViewHandlingStrategy.doRenderView（JspViewHandlingStrategy.java:431）在 com.sun.faces.application.view.JspViewHandlingStrategy.renderView（JspViewHandlingStrategy.java:232）在 com.sun.faces.application.view.MultiViewHandler.renderView（MultiViewHandler.java:133）在 com.sun.faces.lifecycle.RenderResponsePhase.execute（RenderResponsePhase.java:120）在com.sun.faces.lifecycle.Phase.doPhase（Phase.java:101）at com.sun.faces.lifecycle.LifecycleImpl.render（LifecycleImpl.java:219）在javax.faces.webapp.FacesServlet.service（FacesServlet.java:647）at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:303）在 org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:208）在 org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:241）在 org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:208）在 com.infy.EPP.web.filter.AuthenticationFilter.doFilter（AuthenticationFilter.java:57）在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:241）在 org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:208）在 org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:220）在 org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:122）在 org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:505）在 org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:170）在 org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:103）在 org.apache.catalina.valves.AccessLogValve.invoke（AccessLogValve.java:957）在 org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:116）在 org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:423）在 org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1079）在 org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:620）在 org.apache.tomcat.util.net.JIoEndpoint $ SocketProcessor.run（JIoEndpoint.java:318）在 java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:617）在 org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）

****＆GT;在java.lang.Thread.run（Thread.java:744）引起：

java.lang.ClassNotFoundException：无法加载请求的类：
的oracle.jdbc.driver.Oracle驱动程序

org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl $ AggregatedClassLoader.findClass（ClassLoaderServiceImpl.java:230）

在java.lang.ClassLoader.loadClass（ClassLoader.java:424）at at java.lang.ClassLoader.loadClass（ClassLoader.java:357）at java.lang.Class.forName0（Native Method）at java.lang.Class.forName（Class.java:340）at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName（ClassLoaderServiceImpl.java:242） ......还有72个

这是hibernate.cfg.xml：

    <!-- hibernate dialect -->
    <property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
    <property name="hibernate.connection.driver_class">oracle.jdbc.driver.Oracle    Driver</property>
    <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
    <property name="hibernate.connection.username">system</property>
    <property name="hibernate.connection.password">oracle</property>
    <property name="transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>

    <!-- Automatic schema creation (begin) === -->
    <property name="hibernate.hbm2ddl.auto">none</property>

    <!-- Simple memory-only cache -->
    <property name="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property>

    <!-- Enable Hibernate's automatic session context management -->
    <property name="current_session_context_class">thread</property>

    <!-- <property name="show_sql">true</property> -->  



        <mapping class="com.infy.EPP.entites.LoginEntity" />


</session-factory>

这是Hibernate Utility文件：

public class HibernateUtility 
{

    private static final String CONFIGURATION_LOCATION = "com/infy/EPP/resources/hibernate.cfg.xml";
    private static SessionFactory sessionFactory = null;
    private static ServiceRegistry serviceRegistry;

    public synchronized static SessionFactory createSessionFactory() {
        if (sessionFactory == null) 
        {
            try {
                // Step1 : Loading the configuration details from
                // hibernate.cfg.xml
                Configuration configuration = new Configuration()
                        .configure(CONFIGURATION_LOCATION);
System.out.println("configuration in Utility=="+configuration); //---//syso1

                // Step2 : Creating ServiceRegistry using the
                // StandardServiceRegistryBuilder and Configuration defined in
                // Step 1

                serviceRegistry = new StandardServiceRegistryBuilder()
                        .applySettings(configuration.getProperties()).build();
                System.out.println("serviceRegistry=="+serviceRegistry); ---//syso 2

                // Step3 : Creating the SessionFactory using the Configuration
                // and serviceRegistry.

                sessionFactory = configuration
                        .buildSessionFactory(serviceRegistry);
                System.out.println("sessionFactory==="+sessionFactory);   ---//syso 3


            } 
            catch (Exception e) 
            {
            e.printStackTrace();
                EppLogger.logError("HibernateUtility",
                        "createSessionFactory", e.getMessage());
            }
        }

        return sessionFactory;
    }

}

这是我调用它的DAO类方法：

public Login authorize(Login to) throws Exception 
    {
        LoginEntity le = null;
    SessionFactory sessionFactory = null;
        Session session = null;
        Login login =null;
        try {
            sessionFactory = HibernateUtility.createSessionFactory();
            session=sessionFactory.openSession();
            session.beginTransaction();
            le = (LoginEntity)session.get(LoginEntity.class, to.getUserId());
            if (le != null) 
            {
                 login = new Login();
                login.setPassword(le.getPassword());
                login.setRole(le.getRole());
                login.setStatus(le.getStatus());
                login.setUserId(le.getUserId());
            }
            session.getTransaction().commit();
            }
        catch (PersistenceException exception) {
            EppLogger.logError(this.getClass().getName(), "authorize",
                    exception.getMessage());
            throw new Exception("DAO.TECHNICAL_ERROR");
        }
        catch (Exception e) 
        {
            e.printStackTrace();
            EppLogger.logError(this.getClass().getName(), "authorize", e.getMessage());
            throw new Exception("DAO.TECHNICAL_ERROR");
        } 
        finally 
        {
            if(session!=null)
            {
            session.close();
            sessionFactory.close();
            }
        }
        return login;
    }

我在lib文件夹下有ojdbc7。它仍然没有用。我在SO上经历了几个页面，建议在classpath中添加ojdbc14。仍然没有成功

更新：我在Hibernate Utility文件中放了一些syso语句。我正在获得前2但不是第3个系统的价值。

Answer 1

driver_class属性中似乎有一个空格。

<property name="hibernate.connection.driver_class">oracle.jdbc.driver.Oracle    Driver</property>

即使是错误信息也表明了这一点。

尝试删除空格

即，

<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>

无法加载类[oracle.jdbc.driver.Oracle Driver]

1 个答案: