我今天开始使用Hibernate并测试了一个简单的示例,但我收到了错误:找不到hibernate.cfg.xml。 我把hibernate.cfg.xml文件放在src文件夹中,这是它的内容:
<?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>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="connection.username">test</property>
<property name="connection.password">test</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>
<mapping resource="com/mycompany/model/Product.hbm.xml"/>
</session-factory>
</hibernate-configuration>
我把HibernateUtil.java文件放在util文件夹下(src / util),这里是它的内容
package util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil
{
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory()
{
try
{
// Create the SessionFactory from hibernate.cfg.xml
return new Configuration().configure("hibernate.cgf.xml").buildSessionFactory();
}
catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public static void shutdown() {
// Close caches and connection pools
getSessionFactory().close();
}
}
我也将Jars添加到构建路径中。
我的班级Test.java:
import ...
public class Test {
public static void main(String[] args) {
// TODO Auto-generated method stub
ProductDao pd = new ProductDao();
try {
Product p = new Product("PC", 1000L);
pd.add(p);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
添加方法:
public void add(产品p){
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
session.beginTransaction();
session.save(p);
tx.commit();
}
提前致谢
答案 0 :(得分:0)
如果使用maven,请尝试将其放入
/src/main/resources
如果使用简单的eclipse项目(没有maven),将它放在项目根目录(不在src中)
此外,您在源
中拼错了文件的名称return new Configuration().configure("hibernate.cgf.xml").buildSessionFactory();
一定是
hibernate.cfg.xml
答案 1 :(得分:0)
如果它的Maven项目只是在eclips中的/ src / main / resources中添加cfg.xml文件