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Hibernate的核心組件 Persistent Object Hibernate的運行過程 Hibernate簡單示例：  create table T_register( id int primary key, userName varchar(30), userPwd varchar(30), sex varchar(10), age int)
 <%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www./TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=GBK"><title>Insert title here</title></head><body><form action="servlet/RegisterServlet" method="POST"> 用戶名：<input type="text" name="userName" /><BR> 密 碼：<input type="text" name="userPwd" /><BR> 性 別：<input type="text" name="sex" /><BR> 年 齡：<input type="text" name="age" /><BR> <input type="submit" value="save" /></form></body></html>設(shè)計持久化類TRegister.java 持久化類hibernate.cfg.xmlTRegister.hbm.xmlpackage hibernate;/** * hibernate 基礎(chǔ)類 * @author fengyan * date 2007-01-09 02:32 */import org.hibernate.HibernateException;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class HibernateUtil { private static final SessionFactory sessionFactory; static { try { Configuration config = new Configuration().configure("/hibernate/hibernate.cfg.xml"); sessionFactory = config.buildSessionFactory(); } catch(Throwable e) { throw new ExceptionInInitializerError(e); } } public static final ThreadLocal session = new ThreadLocal(); public static Session currentSession() throws HibernateException { Session s = (Session)session.get(); //Open a new Session,if this Thread has none yet if(s == null || !s.isOpen()) { s = sessionFactory.openSession(); session.set(s); } return s; } public static void closeSession() throws HibernateException { Session s = (Session)session.get(); session.set(null); if(s != null) s.close(); }}package hibernate.servlet;/** * @author fengyan * date 2007-01-09 02:44 * 設(shè)計Hibernate控制類 */import hibernate.HibernateUtil;import hibernate.PO.TRegister;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.hibernate.HibernateException;import org.hibernate.Session;import org.hibernate.Transaction;public class RegisterServlet extends HttpServlet { private static final String CONTENT_TYPE = "text/html;charset=GBK"; public void init() throws ServletException { // Put your code here } public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType(CONTENT_TYPE); request.setCharacterEncoding("GBK"); PrintWriter out = response.getWriter(); String userName = request.getParameter("userName"); String userPwd = request.getParameter("userPwd"); String sex = request.getParameter("sex"); int age = Integer.parseInt(request.getParameter("age")); TRegister rg = new TRegister(); rg.setAge(age); rg.setSex(sex); rg.setUserName(userName); rg.setUserPwd(userPwd); Session session = HibernateUtil.currentSession();//生成Session實例 Transaction tx = session.beginTransaction(); try { session.save(rg); //保存持久類對象 tx.commit(); //提交到數(shù)據(jù)庫 session.close(); response.sendRedirect("registerOK.jsp"); } catch(HibernateException e) { e.printStackTrace(); tx.rollback(); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request,response); }}編譯----->打包----->運行----->OK！ |
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來自： 精髓_感知力 > 《1603資料-Java》
