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[Java教程]Java_Web三大框架之Hibernate+jsp+selvect+HQL注册用户

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/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>