鷹翔宇空

??? <session-factory name="hibernate.session_factory">

??????? <!-- Database connection settings -->
??????? <!--property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
??????? <property name="connection.url">jdbc:oracle:thin:@localhost:1521:hyq</property>
??????? <property name="connection.username">hyq</property>
??????? <property name="connection.password">hyq</property-->
?????? <property name="connection.datasource">TestDS</property>

??????? <!-- JDBC connection pool (use the built-in) -->
??????? <property name="connection.pool_size">1</property>

??????? <!-- SQL dialect -->
??????? <property name="dialect">org.hibernate.dialect.Oracle9Dialect</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.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">create</property-->

??????? <mapping resource="com/hyq/src/common/UserVO.hbm.xml"/>

??? </session-factory>

</hibernate-configuration>

注意：此處我使用的connection.datasource為：TestDS。這是因為我在weblogic中配置的數據源就是TestDS。這里要和你配置的數據源保持一致。

實現監聽接口的方法如下（通過此方法完成配置文件的加載，從而達到發布jndi的目的）：
package com.hyq.src.servlets;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

public class HibernateInit
??? implements ServletContextListener {
? public void contextDestroyed(ServletContextEvent servletContextEvent) {
? }

? public void contextInitialized(ServletContextEvent servletContextEvent) {
??? try {
????? Configuration conf = new Configuration().configure();
????? SessionFactory sf = conf.buildSessionFactory();
??? }
??? catch (Exception e) {
????? e.printStackTrace();
??? }
? }
}

實現ServletContextListener接口后要在web.xml中進行配置，如下：
? <listener>
???? <listener-class>com.hyq.src.servlets.HibernateInit</listener-class>
? </listener>
注意：要加載在<servlet>之前。

獲取SessionFactory的方法如下：
package com.hyq.src.util;

import org.hibernate.SessionFactory;
import javax.naming.Context;
import javax.naming.InitialContext;
public class HibernateUtil {
? public HibernateUtil() {
? }
? private static final SessionFactory sessionFactory;

????? static {
????????? try {
??????????? Context ctx = new InitialContext();
????????????? sessionFactory = (SessionFactory) ctx.lookup("hibernate/session_factory");
????????? } catch (Throwable ex) {
????????????? System.err.println("Initial SessionFactory creation failed." + ex);
????????????? throw new ExceptionInInitializerError(ex);
????????? }
????? }

????? public static SessionFactory getSessionFactory() {
????????? return sessionFactory;
? }
}
然后就可以在其他方法中使用SessionFactory 了，如：
??? Session session = HibernateUtil.getSessionFactory()
??????? .getCurrentSession();
??? session.beginTransaction();
??? request.setAttribute("message","已經成功運行！");
??? UserVO userVO = new UserVO();
??? userVO.setUser_name("TrampEagle");
??? session.save(userVO);
??? session.getTransaction().commit();