spring2.5+hibernate3.3整合时，sessionFactory创建时连接数据库配制的几种方式

第一种：在spring容器中配制连接信息与映射文件

<!-- 读入属性文件，该配制只能在spring配制文件中读取属性文件里的名称--> 

<bean id="propertyConfig" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties"/> </bean>        <bean id="dataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource">        <property name="driverClassName" value="${jdbc.driver_class}"/>        <property name="url" value="${jdbc.url}"/>        <property name="username" value="${jdbc.username}"/>        <property name="password" value="${jdbc.password}"/>    </bean>       <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">        <property name="dataSource" ref="dataSource"></property>        <property name="mappingDirectoryLocations">  <list>    <value>classpath:cn/entity</value>  </list>  </property>  <property name="hibernateProperties">    <value>  hibernate.dialect=${jdbc.dialect}  hibernate.hbm2ddl.auto = update  hibernate.show_sql = true</value>  </property>      </bean>

第二种方式：创建hibernate.cfg.xml

spring容器中：创建sessionFactory类，配制属性configLocations，找到hibernate.cfg.xml

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">     <property name="configLocations">     <list>     <value>     classpath:hibernate.cfg.xml     </value>     </list>     </property>     </bean>

hibernate.cfg.xml文件配制：

<?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">oracle.jdbc.driver.OracleDriver</property>        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>        <property name="connection.username">system</property>        <property name="connection.password">orcl</property>          <!-- JDBC connection pool (use the built-in) -->        <property name="connection.pool_size">1</property>        <!-- SQL dialect -->        <property name="dialect">org.hibernate.dialect.OracleDialect</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="cn/entity/person.hbm.xml"/>    </session-factory></hibernate-configuration>

 

注：推介使用第一种：灵活配制连接属性，批量读入映射文件,spring对Bean进行创建和管理，在spring中配制更加灵活。