实现Hibernate框架的CRUD
1.创建Web项目HS_test如图所示：
2.创建数据库DBHSTest,在数据库中创建表Teacher，并插入数据
3.在Myeclipse中调出DB Brower视图
右键->New:
连接后如图所示：
4.导入Hibernate
右击项目->myeclipse->Add Hibernate Capabilities:
选择Hibernate3.3 点击Next：
默认设置，在src文件夹下创建hibernate.cfg.xml文件，点击Next：
选择之前新建的DB Driver：DBHSTest，配置自动显示出来，点击Next：
将 HibernateSessionFactory类建立在com.miaomiao.hs.test包下，点击Finish，完成导入。
查看hibernate.cfg.xml文件：
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration> <session-factory>
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
<property name="connection.url">jdbc:sqlserver://127.0.0.1:1433;databaseName=dbHSTest</property>
<property name="connection.username">sa</property>
<property name="connection.password">123</property>
<property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
<property name="myeclipse.connection.profile">dbHSTest</property> </session-factory> </hibernate-configuration>
5.创建ORM映射 反向工程
（1）选择DB Brower 下的dbHSTest ->...->dbo->table->Teacher,右键，选择Hibernate ReverseEngineering：
如图选择，点击Next，全部默认设置
创建完成后，生成如图Java文件和xml文件：
Teacher.hbm.xml文件内容
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
<class name="com.miaoshi.hs.orm.Teacher" table="Teacher" schema="dbo" catalog="dbHSTest">
<id name="id" type="java.lang.String">
<column name="ID" length="10" />
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String">
<column name="Name" length="20" not-null="true" />
</property>
</class>
</hibernate-mapping>
Teacher.java文件内容：
package com.miaoshi.hs.orm; /**
* Teacher entity. @author MyEclipse Persistence Tools
*/ public class Teacher implements java.io.Serializable { // Fields private String id;
private String name; // Constructors /** default constructor */
public Teacher() {
} /** full constructor */
public Teacher(String id, String name) {
this.id = id;
this.name = name;
} // Property accessors public String getId() {
return this.id;
} public void setId(String id) {
this.id = id;
} public String getName() {
return this.name;
} public void setName(String name) {
this.name = name;
} }
6.实现对数据库的增删改查
（1）显示教师信息
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.miaoshi.hs.orm.Teacher"%>
<%@page import="com.miaoshi.hs.HibernateSessionFactory"%>
<%@page import="org.hibernate.Session"%>
<%@page import="org.hibernate.Query"%>
<%
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 'TeacherList.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">
--> </head> <body>
<%
Session ss = HibernateSessionFactory.getSession();
ss.beginTransaction(); Query query = ss.createQuery("from Teacher");
List<Teacher> teachers = query.list(); ss.getTransaction().commit();
ss.close(); %>
<center>
教师列表<br><br>
<a href="TeacherAdd.html">添加</a>
<table border="1" cellspacing="0" cellpadding="4">
<tr>
<th>工号</th>
<th>姓名</th>
<th>操作</th>
</tr>
<% for(int i = 0;i<teachers.size();i++){ %>
<tr>
<td><%=teachers.get(i).getId() %></td>
<td><%=teachers.get(i).getName() %></td>
<td><a href="StudentEdit.jsp?ID=<%=teachers.get(i).getId()%>">编辑</a>
<a href="servlet/StudentDelete.do?ID=<%=teachers.get(i).getId()%>">删除</a></td>
</tr>
<%} %>
</table>
</center>
</body>
</html>
（2）增加教师信息
TeacherAdd.html
<!DOCTYPE html>
<html>
<head>
<title>TeacherAdd.html</title> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8"> <!--<link rel="stylesheet" type="text/css" href="./styles.css">--> </head> <body>
<form id="form1" name="form1" method="post"
action="/servlet/TeacherAdd">
<center>
添加教师信息<br> <br> 工号<input type="text" id="ID" name="ID"><br>
<br> 姓名<input type="text" id="Name" name="Name"><br>
<br> <input type="submit" value="确定">
</center>
</form>
</body>
</html>
创建TeacherAdd的Servlet
package com.miaoshi.hs; 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.Session; import com.miaoshi.hs.HibernateSessionFactory;
import com.miaoshi.hs.orm.Teacher; public class TeacherAdd extends HttpServlet { /**
* 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 { response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the GET method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
} /**
* 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 { request.setCharacterEncoding("UTF-8");
String strID = "";
String strName = ""; strID = request.getParameter("ID");
strName = request.getParameter("Name");
Session session = HibernateSessionFactory.getSession();
try{ session.beginTransaction(); Teacher student = new Teacher();
student.setId(strID);
student.setName(strName);
session.save(student); session.getTransaction().commit();
session.close(); response.sendRedirect("../TeacherList.jsp"); }
catch(Exception e){
session.clear();
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>Add fail</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" add fail! ");
out.println(" <a href='../TeacherList.jsp'>return</a>");
out.println(e.getMessage());
//out.print(this.getClass());
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
} }
未完待续。。。
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