inithibernate.java

首先确保MySQL4.0数据库已经正确安装

package edu.jnestore.plugin;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletException;

import net.sf.hibernate.HibernateException;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.cfg.Configuration;

import org.apache.struts.action.ActionServlet;
import org.apache.struts.action.PlugIn;
import org.apache.struts.config.ModuleConfig;

/**
 * InitHibernate是对Hibernate进行初始化的Struts插件
 */
public class InitHibernate implements PlugIn {

	private Context ctx;
	private SessionFactory sessionFactory;
	/*
	 * 插件销毁方法
	 */
	public void destroy() {
		if (ctx != null) {
			try {
				// unbind JNDI 节点
				ctx.unbind("HibernateSessionFactory");
			} catch (NamingException e) {
				e.printStackTrace();
			}
		}
		if (sessionFactory != null) {
			try {
				// 关闭sessionFactory
				sessionFactory.close();
			} catch (HibernateException e) {
				e.printStackTrace();
			}
			sessionFactory = null;
		}
	}

	/*
	 * 插件初始化方法
	 */
	public void init(ActionServlet servlet, ModuleConfig config)
		throws ServletException {
		try {
			// 获取SessionFactory的实例
			sessionFactory =
				new Configuration().configure().buildSessionFactory();
		} catch (HibernateException ex) {
			throw new RuntimeException(
				"Exception building SessionFactory: " + ex.getMessage(),
				ex);
		}

		try {
			// 取得容器上下文
			ctx = new InitialContext();
			// 将sessionFactory bind到JND树中
			ctx.bind("HibernateSessionFactory", sessionFactory);
		} catch (NamingException ex) {
			throw new RuntimeException(
				"Exception binding SessionFactory to JNDI: " + ex.getMessage(),
				ex);
		}
	}

}