hibernate两个配置模板(***.hbm.xml;***.cfg.xml)_hibernate两个配置xml-优快云博客

本文链接：https://blog.youkuaiyun.com/IT_COOKIE_SAM/article/details/58248689

本文详细介绍了Hibernate框架中的两个关键配置文件：.cfg.xml用于数据库连接配置，包括数据库驱动、URL、用户名、密码及连接池设置；.hbm.xml则定义了JavaBean与数据库表之间的映射关系，包括表名、字段名等。

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***.cfg.xml------->这个是hibernate的硬件配置信息(连接数据库的):如数据库的密码账号,数据库地址,连接池数目

<?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>
         <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
         <property name="connection.url">jdbc:mysql://localhost:3306/test_table</property>
         <property name="connection.username">root</property>
         <property name="connection.password">samlin123</property>
         <property name="hibernate.c3p0.max_size">20</property>
         <property name="hibernate.c3p0.min_size">1</property>
         <property name="hibernate.c3p0.timeout">5000</property>

             
         <property name="hibernate.c3p0.max_statements">100</property>
         <property name="hibernate.c3p0.idle_test_period">3000</property>
       <property name="hibernate.c3p0.acquire_increment">2</property>


          
         <property name="dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>

        
        <property name="hbm2ddl.auto">update</property>
       
       <mapping resource="test.hbm.xml"/>
    </session-factory>

</hibernate-configuration>

***.hbm.xml;----------------->这个是hibernate,javabean和数据库之间关联配置:如类的属性,必须和数据库一致,甚至顺序也得一致,听说顺序不一致会导致不知名的拨错.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping
PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<hibernate-mapping package="Hibernate2">
   <class name="test1" table="test_table">
   <id name="id" unsaved-value="null">
       <generator class="identity"></generator>
   </id>
       <property name="name"/>
       <property name="address"/>
   </class>
</hibernate-mapping>