hibernate的基本配置

<?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) -->
        <property name="connection.pool_size">1</property>

        <!-- SQL dialect -->
        <property name="dialect">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 -->
        <property name="show_sql">true</property>

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

        <mapping resource="xia/model/Student.hbm.xml"/>
		 <mapping class="xia.model.Teacher"/>
    </session-factory>

</hibernate-configuration>

 

<?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="xia.model">
	<class name="Student">
		<id name="id">
			<generator class="native"></generator>
		</id>
		<property name="name" />
		<property name="age" />
    </class>
	
</hibernate-mapping>

 

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
//当前的类是一个持久化类，是Teacher这个类。他映射了一个表category。所对应的 数据库是users
//这句：@Table(name = "teacher", catalog = "users")  可以省略
@Entity
@Table(name="teacher")
public class Teacher {
	private int id;
	private String name;
	private String title;
	@Id
	/*指定主键生成策略*/
	@GeneratedValue(strategy=GenerationType.IDENTITY)
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	 //映射表中name这个字段 ，长度是500
	 @Column(name = "name", length = 500)
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	
}