我有问题。我是hibernate的新手,我想用HibernateOGM编写一个非常简单的例子。我得到一个例外说:
引起:org.hibernate.HibernateException:无法实例化指定的TransactionFactory类[org.transaction.JDBCTransactionFactory]
我搜索的确很多,但我找不到解决问题的方法。据我所知,问题出现在这一行:
sessionfactory=cfgogm.buildSessionFactory(serviceregistry);
如果我评论其他行我没有例外,只有INFOS。
这是我的Stacktrace:
at org.hibernate.engine.transaction.internal.TransactionFactoryInitiator.initiateService(TransactionFactoryInitiator.java:80)
at org.hibernate.ogm.transaction.impl.OgmTransactionFactoryInitiator.buildServiceInstance(OgmTransactionFactoryInitiator.java:61)
at org.hibernate.ogm.transaction.impl.OgmTransactionFactoryInitiator.buildServiceInstance(OgmTransactionFactoryInitiator.java:41)
at org.hibernate.ogm.service.impl.OptionalServiceInitiator.initiateService(OptionalServiceInitiator.java:37)
at org.hibernate.service.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:69)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:176)
在这里你可以找到我的代码和hibernate.cfg.xml和pom.xml:
OgmConfiguration cfgogm=new OgmConfiguration();
cfgogm.configure("hibernate.cfg.xml");
serviceregistry=new ServiceRegistryBuilder().applySettings(cfgogm.getProperties()).buildServiceRegistry();
sessionfactory=cfgogm.buildSessionFactory(serviceregistry)
hibernate.cfg.xml
是:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.ogm.datastore.grid_dialect">org.hibernate.ogm.dialect.mongodb.MongoDBDialect</property>
<property name="hibernate.ogm.datastore.provider">mongodb</property>
<property name="hibernate.ogm.mongodb.database">rcfdb</property>
<property name="hibernate.ogm.mongodb.host">127.0.0.1</property>
<property name="hibernate.ogm.mongodb.port">27017</property>
<mapping resource="hibernate-contact.hbm.xml"/>
</session-factory>
</hibernate-configuration>
pom.xml
:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>hogm</groupId>
<artifactId>HibernateOGM_MongoDB</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>HibernateOGM_MongoDB</name>
<url>http://maven.apache.org</url>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.hibernate.ogm</groupId>
<artifactId>hibernate-ogm-mongodb</artifactId>
<version>4.0.0.Beta1</version>
</dependency>
<dependency>
<groupId>org.hibernate.ogm</groupId>
<artifactId>hibernate-ogm-core</artifactId>
<version>4.0.0.Beta2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
<type>jar</type>
</dependency>
</dependencies>
</project>
你可以帮我解决这个问题吗?
答案 0 :(得分:2)
正确的类名是org。 hibernate .transaction.JDBCTransactionFactory。
可能hibernate会使用不正确的类名来获取某些属性或属性文件。
如果找不到,请在自己的hibernate.cfg.xml中覆盖它:
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
答案 1 :(得分:1)
Hibernate Object / Grid Mapper(OGM)是一个持久性引擎,为 NoSQL 数据存储提供Java持久性(JPA)支持。那你为什么要用derby的 hibernate-ogm ?
查看official guide for hibernate-ogm with mangoDB
- 编辑 -
在任何配置文件中都有类似 JDBCTransactionFactory 的内容吗?尝试删除它。