【发布时间】:2015-02-07 10:20:43
【问题描述】:
我今天开始使用 Hibernate 并测试了一个简单的示例,但出现错误:找不到 hibernate.cfg.xml。 我将 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>
我将 HibernateUtil.java 文件放在 util 文件夹 (src/util) 下,这是它的内容
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();
}
}
我还将 Jar 添加到构建路径中。
我的类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:
公共无效添加(产品 p){
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
session.beginTransaction();
session.save(p);
tx.commit();
}
提前致谢
【问题讨论】:
-
将
hibernate.cfg.xml放入src->util文件夹,然后重试。 -
你使用的是哪个构建工具,比如 Gradle、Ant、Maven
-
我做到了,但还是同样的问题。
-
我没有使用任何工具。