hibernate 连oracle9i出问题了 大虾帮我看看啊

Question

我做了个登录的例子
可总是报错 郁闷啊
我的HibernateUtil文件package Login.hibernate;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.File;import org.hibernate.Transaction;
public class HibernateUtil {       private static Log log = LogFactory.getLog(HibernateUtil.class);      private static final SessionFactory sessionFactory;
       public static final ThreadLocal session = new ThreadLocal();    private static String CONFIG_FILE_LOCATION = "/hibernate.cfg.xml";
    static {
try {
                
                    sessionFactory = new Configuration().configure(CONFIG_FILE_LOCATION).buildSessionFactory();
                }catch (Throwable ex) {
                        ex.printStackTrace();
                        throw new ExceptionInInitializerError(ex);                }
    }
    public static final ThreadLocal tLocalsess = new ThreadLocal();        public static final ThreadLocal tLocaltx = new ThreadLocal();
  
    public static Session currentSession() throws HibernateException {
        Session s = (Session) session.get();
              if (s == null||!s.isOpen()) {
                        s = sessionFactory.openSession();
                        session.set(s);
                }
                return s;
    }       public static void closeSession() throws HibernateException {               Session s = (Session) session.get();        if (s != null)
                        s.close();
                session.set(null);    }
    /*
         * begin the transaction
         */
        public static void beginTransaction() {
                System.out.println("begin tx");
                Transaction tx = (Transaction) tLocaltx.get();
                try {
                        if (tx == null) {
                                tx = currentSession().beginTransaction();
                                tLocaltx.set(tx);
                        }
                } catch (HibernateException e) {
                        // throw new InfrastructureException(e);
                }
        }        /*
         * close the transaction
         */
        public static void commitTransaction() {
                Transaction tx = (Transaction) tLocaltx.get();
                try {
                        if (tx != null && !tx.wasCommitted() && !tx.wasRolledBack())
                                tx.commit();
                        tLocaltx.set(null);
                        System.out.println("commit tx");
                } catch (HibernateException e) {
                        // throw new InfrastructureException(e);
                }
        }}

Answer 1

通过断点跟踪 发现
try {
                 
                    sessionFactory = new Configuration().configure(CONFIG_FILE_LOCATION).buildSessionFactory();
                }catch (Throwable ex) {
                        ex.printStackTrace();
                        throw new ExceptionInInitializerError(ex);                }
抛出异常 
这是怎么回事啊

Answer 2

登录的页面能出来
但我输入用户名和密码后 
报错
Error 500--Internal Server Errorjava.lang.ExceptionInInitializerError
 at Login.hibernate.HibernateUtil.(HibernateUtil.java:46)
 at Login.struts.LoginAction.execute(LoginAction.java:34)
 at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348)
 at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6981)
 at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
 at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
 at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892)
 at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766)
 at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
 at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
Caused by: org.hibernate.MappingException: entity class not found: Login.hibernate.Usertable
 at org.hibernate.mapping.PersistentClass.getMappedClass(PersistentClass.java:99)
 at org.hibernate.tuple.PropertyFactory.getGetter(PropertyFactory.java:166)
 at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:44)
 at org.hibernate.tuple.EntityMetamodel.(EntityMetamodel.java:115)
 at org.hibernate.persister.entity.AbstractEntityPersister.(AbstractEntityPersister.java:412)
 at org.hibernate.persister.entity.SingleTableEntityPersister.(SingleTableEntityPersister.java:108)
 at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
 at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:216)
 at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1176)
 at Login.hibernate.HibernateUtil.(HibernateUtil.java:43)
 ... 17 more
Caused by: java.lang.ClassNotFoundException: Login.hibernate.Usertable
 at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:199)
 at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:61)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
 at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:224)
 at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:41)
 at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Class.java:141)
 at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:108)
 at org.hibernate.mapping.PersistentClass.getMappedClass(PersistentClass.java:96)
 ... 26 more

Answer 3

我用的是jbuilder2006+struts+hibernate3+weblogic8+oracle9i

Answer 4

Usertable.java文件如下
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
      "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping  package="Login.hibernate">        <class name="Usertable"
            table="user_table"
            discriminator-value="C">             <id name="id"  column="id" type="string">
                 <generator class="uuid.hex"/>
                </id>
            <property name="name" column="name" type="string"/>
             <property name="password" column="password" type="string"/>
              <property name="utype" column="utype" type="string"  /> </class></hibernate-mapping>

Answer 5

上面错了 
应该是User.hbm.xml文件 如下
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
      "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping  package="Login.hibernate">        <class name="Usertable"
            table="user_table"
            discriminator-value="C">             <id name="id"  column="id" type="string">
                 <generator class="uuid.hex"/>
                </id>
            <property name="name" column="name" type="string"/>
             <property name="password" column="password" type="string"/>
              <property name="utype" column="utype" type="string"  /> </class></hibernate-mapping>

Answer 6

Usertable.java文件如下 
package Login.hibernate;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Usertable{
        private String id;
        private String name;
        private String password;
        private String utype;
          public String getId() {
                  return id;
          }
          public void setId(String id) {
                  this.id = id;
          }
          public String getName() {
                  return name;
          }
          public void setName(String name) {
                  this.name = name;
          }
          public String getUtype() {
                  return utype;
          }
          public void setUtype(String utype) {
                  this.utype = utype;
          }
          public String getPassword() {
                  return password;
          }
          public void setPassword(String password) {
                  this.password = password;
          }
}

Answer 7

数据库中的USER_TABLE表ID             VARCHAR2
NAME           VARCHAR2
PASSWORD       VARCHAR2
UTYPE          VARCHAR2
U_LIMIT        VARCHAR2
U_REG_DATE     DATE          可以为空