我的第一个hibernate程序

Student.java

package com.hugui.hibernate.model;

public class Student {

	private int id;
	
	private String name;
	
	private int age;

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}
	
}

Student.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<!-- 利用hibernate将我们的class和数据库里面的表对应起来了  -->
<hibernate-mapping package="com.hugui.hibernate.model">
	<!--这个标识Student类对应数据库的student表 ,如果表的名字和类名一样，就只写name就可以了 -->
	<class name="Student" table="student">
		<!--id标签可以理解为主键, name可以理解为调用类里面的getId()，cloumn代表数据库里面的字段名，如果相同，同样可以只写name -->
		<id name="id" column="id"></id>
		<!-- property标签可以理解为普通属性，name可以理解为类里面的getName()，cloumn则是对应数据库里面的字段名，同样，如果name和cloumn相同则可以只写name -->
		<property name="name" column="name"></property>
		<property name="age"></property>
	</class>
</hibernate-mapping>

hibernate.cfg.xml

<?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">

<hibernate-configuration>

	<session-factory>

		<!-- Database connection settings -->
		<property name="connection.driver_class">
			com.mysql.jdbc.Driver
		</property>
		<property name="connection.url">
			jdbc:mysql://localhost/hibernate
		</property>
		<property name="connection.username">root</property>
		<property name="connection.password">root</property>

		<!-- JDBC connection pool (use the built-in) -->
		<!-- 一般不用这个hibernate自带的连接池，用的最多的是application本身用JNDI注册在里面的连接池-->
		<!-- <property name="connection.pool_size">1</property>  -->

		<!-- SQL dialect -->
		<property name="dialect"><!-- 方言，数据库的语言 -->
			org.hibernate.dialect.MySQLDialect
		</property>

		<!-- Enable Hibernate's automatic session context management -->
		<!-- <property name="current_session_context_class">thread</property> -->

		<!-- Disable the second-level cache  -->
		<property name="cache.provider_class">
			org.hibernate.cache.NoCacheProvider
		</property>

		<!-- Echo all executed SQL to stdout -->
		<!-- 把那个生成的sql打印出来  -->
		<property name="show_sql">true</property>

		<!-- Drop and re-create the database schema on startup -->
		<!-- <property name="hbm2ddl.auto">update</property> -->

		<!-- 告诉hibernate去哪里找那个配置文件 -->
		<mapping resource="com/hugui/hibernate/model/Student.hbm.xml" />

	</session-factory>

</hibernate-configuration>