以mysql为例hibernate的配置文件

1. 数据库连接配置文件

<?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> <!-- Database connection settings --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf8</property> <property name="connection.username">root</property> <property name="connection.password">admin</property> <!-- SQL dialect --> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <property name="current_session_context_class">thread</property> <property name="show_sql">true</property> <property name="hbm2ddl.auto">update</property> <mapping resource="pojo/Product.hbm.xml" /> <mapping resource="pojo/Category.hbm.xml" /> <mapping resource="pojo/User.hbm.xml" /> </session-factory> </hibernate-configuration>

1. 建表语句

CREATE TABLE product_ ( id int(11) NOT NULL AUTO_INCREMENT, name varchar(30) , price float , PRIMARY KEY (id) ) DEFAULT CHARSET=UTF8;

1. java的pojo类

package pojo; import java.util.Set; public class Product { private int id; private String name; private float price; private Category category; private Set<User> users; public Set<User> getUsers() { return users; } public void setUsers(Set<User> users) { this.users = users; } public Category getCategory() { return category; } public void setCategory(Category category) { this.category = category; } 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 float getPrice() { return price; } public void setPrice(float price) { this.price = price; } }

1. pojo类和对应表的配置文件

<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="pojo"> <class name="Product" table="product_"> <id name="id" column="id"> <generator class="native"> </generator> </id> <property name="name" /> <property name="price" /> <many-to-one name="category" class="Category" column="cid" /> <set name="users" table="user_product" lazy="false"> <key column="pid" /> <many-to-many column="uid" class="User" /> </set> </class> </hibernate-mapping>