Hibernate 配置文件详解

Hibernate 配置文件：

• hibernate.xml
• xxx.hbm.xml

一、hibernate.xml:

hibernate.xml用来配置Hibernate的全局环境。

1.配置连接数据库的基本信息：

<property name="connection.url">jdbc:mysql://localhost:3306/ssmproperty>
<property name="connection.driver_class">com.mysql.cj.jdbc.Driverproperty>
<property name="connection.username">Cailinhaoproperty>
<property name="connection.password">CAIlinhao11014359property>
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2.集成C3P0，配置数据库连接池信息：

<property name="hibernate.c3p0.acquire_increment">10property>

<property name="c3p0.idle_test_period">10000property>

<property name="c3p0.timeout">5000property>

<property name="c3p0.max_size">30property>

<property name="c3p0.min_size">5property>

<property name="hibernate.c3p0.max_statements">10property>
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3.配置Hibernate基本信息：

<property name="show_sql">trueproperty>

<property name="format_sql">trueproperty>

<property name="dialect">org.hibernate.dialect.MySQL8Dialectproperty>

<property name="hibernate.hbm2ddl.auto">updateproperty>
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4.注册实体关系映射文件：

<mapping resource="org/example/Entity/CustomerEntity.hbm.xml"/>
<mapping resource="org/example/Entity/OrdersEntity.hbm.xml"/>
<mapping resource="org/example/Entity/AccountCourseEntity.hbm.xml"/>
<mapping resource="org/example/Entity/AccountsEntity.hbm.xml"/>
<mapping resource="org/example/Entity/CoursesEntity.hbm.xml"/>
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二、xxx.hbm.xml：

实体关系映射文件，用来将实体类和数据库表建立映射关系。

DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">







<hibernate-mapping package="org.example.Entity">
    <class name="org.example.Entity.CustomerEntity" table="customer" schema="ssm">
        
        <id name="id" column="id" type="java.lang.Integer">
            <generator class="uuid"/>
        id>
        
        <property name="name" column="name" type="java.lang.String"/>
        <property name="age" column="age" type="java.lang.Integer"/>
        
        <set name="orders" table="orders" lazy="true" inverse="true" cascade="delete">
            
            <key column="customer_id"/>
            
            <one-to-many class="org.example.Entity.OrdersEntity"/>
        set>
    class>
hibernate-mapping>
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