Hibernate比SQL语句简单多了，代码冗余少，切方便简洁明了。下面用Hibernate+jsp+selvect+HQL来实现注册用户。
第一步：编写用户实体类和Users2.hbm.
/* * 用户实体类 */public class Users2 { private int id;//用户id private String name;//用户昵称 private String password;//用户密码 private String telephone;//用户号码 private String username;//用户姓名 private String isadmin;//是否是管理员//省略get和set方法}<??><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="entity"> <class name="Users2" table="Users2"> <id name="id"> <generator class="increment"/> </id> <property name="name" /> <property name="password" /> <property name="telephone" /> <property name="username" /> <property name="isadmin"/> </class></hibernate-mapping>
第二步：配置hibernate.cfg.
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration> <session-factory name="foo"> <!-- 数据库方言 --> <property name="dialect"> org.hibernate.dialect.OracleDialect </property> <!-- 连接数据库Url --> <property name="hibernate.connection.url"> jdbc:oracle:thin:@localhost:1521:orcl </property> <!-- 连接驱动 --> <property name="hibernate.connection.driver_class"> oracle.jdbc.driver.OracleDriver </property> <!-- 用户名 --> <property name="hibernate.connection.username">epet</property> <!-- 密码 --> <property name="hibernate.connection.password">123456</property> <!-- 在控制台打印sql信息 --> <property name="show_sql">true</property> <!-- 创建表结构 --> <property name="hibernate.hbm2ddl.auto">update</property> <!-- 配置映射信息 --> <mapping resource="entity/Users2.hbm. /> </session-factory></hibernate-configuration>
第三步：编写HibernateUtil类，dao层和daoImpl层
package com.msit.hibernate.HibernateUtil;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class HibernateUtil { private HibernateUtil(){ }; public static SessionFactory SessionFactory = null; static{ //hibernate Configuration cf = new Configuration(); cf.configure(); SessionFactory = cf.buildSessionFactory();//DriverManager.getconnection()//Session session = SessionFactory.openSession(); } public static Session getSession(){ return SessionFactory.openSession(); } //关闭session public static void closeSession(Session session){ if(session!=null){ session.clear(); } }}public interface UserDao { /* * 用户注册 */ public int addUserList(Users2 user);}
package Dao.Impl;import java.util.List;import org.hibernate.Query;import org.hibernate.Session;import org.hibernate.Transaction;import com.msit.hibernate.HibernateUtil.HibernateUtil;import entity.Users2;import Dao.UserDao;public class UserDaoImpl implements UserDao{/* * 注册用户 * (non-Javadoc) * @see Dao.UserDao#addUserList(entity.Users2) */ public int addUserList(Users2 user) { Session session = HibernateUtil.getSession(); Transaction Transaction=session.beginTransaction(); try{ //对数据保存至数据库 session.save(user); //提交事务 Transaction.commit(); return 1; }catch(Exception e){ e.printStackTrace(); //如果出现异常，事务回滚 Transaction.rollback(); return 0; }finally{ HibernateUtil.closeSession(session); } }}创建selvect（addUser）和配置web.
package selvect;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 entity.Users2;import Biz.Users2Biz;import Biz.Impl.Users2BizImpl;public class addUser extends HttpServlet { /** * Constructor of the object. */ public addUser() { super(); } /** * Destruction of the servlet. <br> */ public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } /** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } /** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Users2 user=new Users2(); request.setCharacterEncoding("utf-8"); user.setName(request.getParameter("name")); user.setPassword(request.getParameter("password")); user.setTelephone(request.getParameter("telephone")); user.setUsername(request.getParameter("username")); Users2Biz biz=new Users2BizImpl(); int i=biz.addUserList(user); if(i>0){ response.sendRedirect("index.jsp"); }else{ response.sendRedirect("login.jsp"); System.out.print("cuol"); } } /** * Initialization of the servlet. <br> * * @throws ServletException if an error occurs */ public void init() throws ServletException { // Put your code here }}<??><web-app version="2.5" ="http://java.sun.com/ ="http://www.w3.org/2001/ xsi:schemaLocation="http://java.sun.com/> <!--注册用户--> <servlet> <servlet-name>addUser</servlet-name> <servlet-class>selvect.addUser</servlet-class> </servlet> <!-- 映射servlet --> <servlet-mapping> <servlet-name>addUser</servlet-name> <url-pattern>/addUser</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>
jsp页面：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'regs.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --><LINK rel=stylesheet type=text/css href="css/style.css"> </head><BODY><DIV id=header class=wrap><DIV id=logo><IMG src='/images/loading.gif' data-original="images/logo.jpg" width="197px;" height="74px;"></DIV></DIV><DIV id=regLogin class=wrap><DIV class=dialog><DL class=clearfix> <DT>新用户注册</DT> <DD class=past>填写个人信息</DD></DL><DIV class=box><FORM action="addUser" method="post"><DIV class=infos><TABLE class=field> <TBODY> <TR> <TD class=field>用 户 名：</TD> <TD><INPUT class=text type=text name="name"> </TD></TR> <TR> <TD class=field>密 码：</TD> <TD><INPUT class=text type=password name="password"></TD></TR> <TR> <TD class=field>确认密码：</TD> <TD><INPUT class=text type=password name="repassword"> </TD></TR> <TR> <TD class=field>电 话：</TD> <TD><INPUT class=text type=text name="telephone"> </TD></TR> <TR> <TD class=field>用户姓名：</TD> <TD><INPUT class=text type=text name="username"> </TD></TR></TBODY></TABLE><DIV class=buttons><INPUT value=立即注册 type="submit"></DIV></DIV></FORM></DIV></DIV></DIV><DIV id=footer class=wrap><DL> <DT>赶集网 © 2010 赶集网 京ICP证1000001号</DT> <DD>关于我们 · 联系方式 · 意见反馈 · 帮助中心</DD></DL></DIV> </BODY> </HTML>
原标题：Java_Web三大框架之Hibernate+jsp+selvect+HQL注册用户
关键词：JS
我知道了 