(异常)Hibernate的动态模型

解决办法

不用自带的Hibernate包 自己下载Hibernate包导入

最近出现这样的错误

2015-5-10 12:24:16 org.hibernate.annotations.common.Version <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final}
2015-5-10 12:24:16 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.1.4.Final}
2015-5-10 12:24:16 org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
2015-5-10 12:24:16 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
2015-5-10 12:24:16 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2015-5-10 12:24:16 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2015-5-10 12:24:16 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: org/vo/UserTable.hbm.xml
2015-5-10 12:24:16 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
2015-5-10 12:24:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!)
2015-5-10 12:24:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000115: Hibernate connection pool size: 20
2015-5-10 12:24:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000006: Autocommit mode: false
2015-5-10 12:24:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000401: using driver [com.microsoft.sqlserver.jdbc.SQLServerDriver] at URL [jdbc:sqlserver://localhost:1433;DatabaseName=Test9_4]
2015-5-10 12:24:16 org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000046: Connection properties: {user=sa, password=****}
2015-5-10 12:24:17 org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.SQLServerDialect
2015-5-10 12:24:17 org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000399: Using default transaction strategy (direct JDBC transactions)
2015-5-10 12:24:17 org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
%%%% Error Creating SessionFactory %%%%
java.lang.NullPointerException
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:247)
    at org.hibernate.annotations.common.util.ReflectHelper.classForName(ReflectHelper.java:143)
    at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.classForName(JavaReflectionManager.java:117)
    at org.hibernate.envers.configuration.RevisionInfoConfiguration.configure(RevisionInfoConfiguration.java:262)
    at org.hibernate.envers.configuration.AuditConfiguration.<init>(AuditConfiguration.java:102)
    at org.hibernate.envers.configuration.AuditConfiguration.getFor(AuditConfiguration.java:165)
    at org.hibernate.envers.event.EnversIntegrator.integrate(EnversIntegrator.java:64)
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:306)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1744)
    at org.util.HibernateSessionFactory.<clinit>(HibernateSessionFactory.java:34)
    at org.test.HibernateTest.getCurrentSession(HibernateTest.java:26)
    at org.test.HibernateTest.main(HibernateTest.java:13)
2015-5-10 12:24:17 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2015-5-10 12:24:17 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2015-5-10 12:24:17 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: org/vo/UserTable.hbm.xml
2015-5-10 12:24:17 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
2015-5-10 12:24:17 org.hibernate.cfg.Configuration$MappingsImpl addImport
INFO: HHH000071: Duplicate import: UserTable -> UserTable
%%%% Error Creating SessionFactory %%%%
org.hibernate.InvalidMappingException: Could not parse mapping document from resource org/vo/UserTable.hbm.xml
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3409)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3398)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3386)
    at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1341)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1731)
    at org.util.HibernateSessionFactory.rebuildSessionFactory(HibernateSessionFactory.java:73)
    at org.util.HibernateSessionFactory.getSession(HibernateSessionFactory.java:55)
    at org.test.HibernateTest.getCurrentSession(HibernateTest.java:26)
    at org.test.HibernateTest.main(HibernateTest.java:13)
Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping UserTable
    at org.hibernate.cfg.Configuration$MappingsImpl.addClass(Configuration.java:2574)
    at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:172)
    at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3406)
    ... 8 more
Exception in thread "main" java.lang.NullPointerException
    at org.test.HibernateTest.saveUser(HibernateTest.java:38)
    at org.test.HibernateTest.main(HibernateTest.java:14)

同学为类包的调用错误

原先我调用的为Hibernate 4.1 core Library和 Hibernate 4.1 Advanced Support librarys

这个是Myeclipse 10.7自带的

后来下载了hibernate-release-4.3.9.Final官网的这个

通过这样引入

复制压缩包下 C:\Users\Administrator\Desktop\hibernate-release-4.3.9.Final\lib\required的 所有必须jar包

然后

最后引入到下方类包统一起来

这样就把Hibernate官方版引入进去了

然后运行结果可以运行

运行结果如下

2015-5-10 12:34:00 org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2015-5-10 12:34:00 org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {4.3.9.Final}
2015-5-10 12:34:00 org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
2015-5-10 12:34:00 org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
2015-5-10 12:34:00 org.hibernate.cfg.Configuration configure
INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml
2015-5-10 12:34:00 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
2015-5-10 12:34:00 org.hibernate.cfg.Configuration addResource
INFO: HHH000221: Reading mappings from resource: org/vo/UserTable.hbm.xml
2015-5-10 12:34:00 org.hibernate.cfg.Configuration doConfigure
INFO: HHH000041: Configured SessionFactory: null
2015-5-10 12:34:00 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH000402: Using Hibernate built-in connection pool (not for production use!)
2015-5-10 12:34:00 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH000401: using driver [com.microsoft.sqlserver.jdbc.SQLServerDriver] at URL [jdbc:sqlserver://localhost:1433;databaseName=Test9_4]
2015-5-10 12:34:00 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH000046: Connection properties: {user=sa, password=****}
2015-5-10 12:34:00 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH000006: Autocommit mode: false
2015-5-10 12:34:00 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
2015-5-10 12:34:01 org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.SQLServerDialect
2015-5-10 12:34:01 org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService
INFO: HHH000399: Using default transaction strategy (direct JDBC transactions)
2015-5-10 12:34:01 org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory <init>
INFO: HHH000397: Using ASTQueryTranslatorFactory
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000228: Running hbm2ddl schema update
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000102: Fetching database metadata
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000396: Updating schema
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000261: Table found: Test9_4.dbo.userTable
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000037: Columns: [id, username, password]
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000108: Foreign keys: []
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000126: Indexes: [pk_usertable]
2015-5-10 12:34:02 org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000232: Schema update complete

数据库类

这样数据就插入进去了

Test应当这么写

package org.test;import java.util.*;import org.hibernate.Query;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import org.util.HibernateSessionFactory;//import org.vo.UserTale;//import org.vo.UserTable;public class HibernateTest {public Session session;public static void main(String[] args) {//HibernateTest ht = new HibernateTest();//创建类对象//ht.getCurrentSession();//获得session对象Configuration cfg=new Configuration();SessionFactory sessionFactory=cfg.configure().buildSessionFactory();Session session=sessionFactory.openSession();Transaction ts = session.beginTransaction();Map user = new HashMap();user.put("username", "yabber");user.put("password", "123456");session.save("org.vo.UserTable", user);ts.commit();//ht.saveUser();//ht.saveUser();//插入一条记录//ht.updateUser();              //修改该条记录//ht.queryUser();//查看数据库结果//ht.deleteUser();              //删除该条记录//System.out.println("删除该条记录后结果======");//ht.queryUser();//查看数据库结果//ht.closeSession();             //关闭session}//获得session方法public void getCurrentSession(){//调用 HibernateSessionFactory 的 getSession 方法创建 Session 对象session = HibernateSessionFactory.getSession();}//关闭session方法public void closeSession(){if(session!=null){HibernateSessionFactory.closeSession();// 关闭Session}}//插入一条记录方法public void saveUser(){//保存一个UserTable对象Transaction ts = session.beginTransaction();Map user = new HashMap();user.put("username", "yabber");user.put("password", "123456");session.save("org.vo.UserTable", user);ts.commit();}//修改这条记录方法public void updateUser(){//更新一个UserTable对象Transaction ts = session.beginTransaction();Map user = new HashMap();user = (Map)session.get("org.vo.UserTable", 18);// 获取id为18的记录user.put("password", "654321");session.update("org.vo.UserTable", user);ts.commit();}//查询数据库结果方法public void queryUser(){Query query = session.createQuery("from UserTable");    //查询记录List list = query.list();for(int i=0;i<list.size();i++){Map user = (Map)list.get(i);System.out.println(user.get("username"));System.out.println(user.get("password"));}}//删除该条记录方法public void deleteUser(){Transaction ts = session.beginTransaction();Map user = new HashMap();user = (Map)session.get("org.vo.UserTable", 18);session.delete("org.vo.UserTable", user);ts.commit();}}

UserTable.hbm.xml

<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><!--     Mapping file autogenerated by MyEclipse Persistence Tools--><hibernate-mapping>    <class entity-name="org.vo.UserTable" table="userTable">            <id name="id" column="id" type="integer">                  <generator class="identity"/>              </id>              <property name="username" type="string" column="username"/>              <property name="password" type="string" column="password"/>      </class></hibernate-mapping>

Hibernate.hbm.xml

<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE hibernate-configuration PUBLIC          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"          "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><!-- Generated by MyEclipse Hibernate Tools.                   --><hibernate-configuration>    <session-factory>        <property name="hbm2ddl.auto">update</property>        <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>        <property name="connection.url">jdbc:sqlserver://localhost:1433;databaseName=Test9_4</property>        <property name="connection.username">sa</property>        <property name="connection.password">123</property>        <property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>        <mapping resource="org/vo/UserTable.hbm.xml" />    </session-factory></hibernate-configuration>

动态类是MAP映射 而非POJO映射

关于介绍MAP映射的文章

1 http://blog.csdn.net/meng2602956882/article/details/22914493

2 http://www.360doc.com/content/14/0329/19/281812_364737677.shtml

3 http://blog.csdn.net/opnmzxcvb/article/details/4785569