我花了相當多的時間研究並試圖弄清楚我的配置出了問題,但完全停滯不前。從我一直在閱讀的帖子的含義是,我的驅動程序不在類路徑中。我添加了Class.forName(「com.ibm.db2.jcc.DB2Driver」)行,以確保驅動程序可用並在該行中加載。我真的很感激任何關於我可能錯過的建議。指定的JDBC驅動程序com.ibm.db2.jcc.DB2Driver類沒有找到
我的代碼是:
public class TestHibernateConfig {
private static SessionFactory sessionFactory;
public static void testConfig() {
try {
DB2Driver drvr = (DB2Driver) Class.forName("com.ibm.db2.jcc.DB2Driver").newInstance();
Configuration cfg = new Configuration();
cfg.configure("hibernate.cfg.xml");
sessionFactory = cfg.buildSessionFactory();
Session sess = sessionFactory.getCurrentSession();
Transaction tx = sess.beginTransaction();
Criteria crit = sess.createCriteria(ItemData.class);
List items = crit.list();
} catch (Exception e) {
Logger logger = Logger.getLogger("");
logger.error(e.getMessage());
}
}
}
我得到的類未找到錯誤,當我的代碼點擊: SessionFactory的= cfg.buildSessionFactory();
的hibernate.cfg.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 name="speed2db2">
<property name="hibernate.dialect">org.hibernate.dialect.DB2Dialect</property>
<property name="hibernate.connection.driver_class">com.ibm.db2.jcc.DB2Driver</property>
<property name="hibernate.connection.url">jdbc:db2://appdb:50000/MYTEST</property>
<property name="hibernate.connection.username">myUser</property>
<property name="hibernate.connection.password">myPass</property>
</session-factory>
</hibernate-configuration>
的persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="speedPersistUnit">
<class>ItemData</class>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.DB2Dialect"/>
<property name="hibernate.connection.url" value="jdbc:db2://appdb:50000/MYTEST"/>
<property name="hibernate.default_schema" value="MYSCHEMA"/>
<property name="hibernate.connection.username" value="myUser"/>
<property name="hibernate.connection.password" value="myPass"/>
<property name="hibernate.connection.driver_class" value="com.ibm.db2.jcc.DB2Driver"/>
</properties>
</persistence-unit>
</persistence>
在Eclipse中我能夠連接到數據庫,如果我去Hibernate的角度來看,我能夠瀏覽數據庫模式。我也可以使用HQL編輯器在我的課堂上加載數據。
編輯:
09:35:50,338 INFO [org.hibernate.cfg.Configuration] (http-xxxxxx-xx.xx.xx.xxxx-15081-1) HHH000043: Configuring from resource: /com/newpig/speed2DB2/hibernate.cfg.xml
09:35:50,340 INFO [org.hibernate.cfg.Configuration] (http-xxxxxx-xx.xx.xx.xxxx-15081-1) HHH000040: Configuration resource: /com/newpig/speed2DB2/hibernate.cfg.xml
09:35:50,369 INFO [org.hibernate.cfg.Configuration] (http-xxxxxx-xx.xx.xx.xxxx-15081-1) HHH000041: Configured SessionFactory: speed2db2
09:35:52,059 INFO [org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl] (http-xxxxxx-xx.xx.xx.xxxx-15081-1) HHH000402: Using Hibernate built-in connection pool (not for production use!)
09:36:16,856 ERROR [] (http-xxxxxx-xx.xx.xx.xxxx-15081-1) Specified JDBC Driver com.ibm.db2.jcc.DB2Driver class not found
錯誤發生在這條線。
sessionFactory = cfg.buildSessionFactory();
部署到我的.war文件:
.WAR
| -WEB-INF
|| -lib
||| -db2jcc4.jar
||| -HIBERNATE,芯 - 4.1.2.Final.jar
||| -HIBERNATE-的EntityManager-4.1.2.Final.jar
||| -HIBERNATE-JPA-2.0-API-1.0.1.Final.jar
你在哪裏得到錯誤,你可能會分享相關的堆棧跟蹤或其他形式的日誌? – aishwarya 2012-04-06 21:09:57
我添加了堆棧跟蹤。它確實顯示配置文件正在被加載。 – SteveS 2012-04-09 13:55:03