Java_Web三大框架之Hibernate+jsp+selvect+HQL注册用户
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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.xml映射。
/*
* 用户实体类
*/
public
class
Users2 {
private
int id;//用户idprivate 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
}
<?
xml version="1.0"
?>
<!
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.xml数据库映射
<!
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.xml"/></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(); }
publicstatic Session getSession(){
return SessionFactory.openSession();
}
//关闭session
publicstaticvoid 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)
*/publicint 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.xml
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>
*/publicvoid 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
*/publicvoid 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
*/publicvoid 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
*/publicvoid init() throws ServletException {
// Put your code here }
}
<?
xml version="1.0" encoding="UTF-8"
?>
<
web-app
version
="2.5"
xmlns
="http://java.sun.com/xml/ns/javaee"
xmlns:xsi
="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation
="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
>
<!--
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>
原文：http://www.cnblogs.com/wlx520/p/4692993.html
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