(异常)Hibernate的动态模型

灰太狼 2022-08-08 06:36 154阅读 0赞

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

![Center][]

然后

![Center 1][]

最后引入到下方类包统一起来

![Center 2][]

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

![20150510123632212][]

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">
    
    <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">
    
    <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

[Center]: /images/20220805/5e292fc32e9a45b9bab7f303296adc0a.png
[Center 1]: /images/20220805/7e8fc95d2d7c4971abb24d5f1c7176f4.png
[Center 2]: /images/20220805/f4f50f950a81400ebd394669a0721185.png
[20150510123632212]: /images/20220805/d0a6b6a5eda144f8966c8659ba63d6e9.png