Hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration>
<session-factory>
<!-- 必须的属性 -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernatetest</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property> <!-- 显示和格式化输出语句 -->
<property name="hibernate.show_sql">true</property>
<property name="hibernate.format_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<!--auto属性
create 表数据会丢失
create-drop 自动创建，每次创建运行结束，都会把所有表删除
update 不丢失
validate 校验实体和数据库是否一致，不自动生成表
-->
<!-- 引入orm元数据 -->
<mapping resource="com/littlepage/entity/Customer.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Customer.hbm.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.littlepage.entity">
<class name="Customer" table="t_customer"> <id name="id" column="id">
<generator class="identity">
</generator>
</id>
<property name="name" column="name" ></property>
<property name="age" column="age"></property>
</class>
</hibernate-mapping>
entity
package com.littlepage.entity;
public class Customer {
private Integer id;
private String name;
private Integer age;
public Customer() {
super();
}
public Customer(Integer id, String name, Integer age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "Customer [id=" + id + ", name=" + name + ", age=" + age + "]";
}
}
servlet
package com.littlepage.servlet; import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List; import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import com.littlepage.entity.Customer;
import com.littlepage.state.QueryCustomer; /**
* Servlet implementation class ShowCustomer
*/
@WebServlet("/ShowCustomer")
public class ShowCustomer extends HttpServlet {
private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<Customer> li=QueryCustomer.getAll();
request.setAttribute("customerlist", li);
request.getRequestDispatcher("customerlist.jsp").forward(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@page import="com.littlepage.entity.Customer"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>列表</title>
</head>
<body>
<c:forEach var="customer" items="${customerlist}">
<table border="1px">
<tr>
<td><c:out value="${customer.id}"/></td>
<td><c:out value="${customer.name}"/></td>
<td><c:out value="${customer.age}"/></td>
</tr>
</table>
</c:forEach>
</body>
</html>