整合Hibernate和Spring
1、管理SessionFactory 實例
2、聲明式管理
整合:
1、修改applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <!-- 自動掃描與裝配bean --> <context:component-scan base-package="cn.ssh.test"></context:component-scan> <!-- 導入外部的properties文件 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置SessionFactory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <!-- 指定hibernate的配置文件位置 --> <property name="configLocation" value="classpath:hibernate.cfg.xml"></property> <!-- 配置c3p0數據庫連接池 --> <property name="dataSource"> <bean class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 數據連接信息 --> <property name="jdbcUrl" value="${jdbcUrl}"></property> <property name="driverClass" value="${driverClass}"></property> <property name="user" value="${user}"></property> <property name="password" value="${password}"></property> <!-- 其他配置 --> <!--初始化時獲取三個連接,取值應在minPoolSize與maxPoolSize之間。Default: 3 --> <property name="initialPoolSize" value="3"></property> <!--連接池中保留的最小連接數。Default: 3 --> <property name="minPoolSize" value="3"></property> <!--連接池中保留的最大連接數。Default: 15 --> <property name="maxPoolSize" value="5"></property> <!--當連接池中的連接耗盡的時候c3p0一次同時獲取的連接數。Default: 3 --> <property name="acquireIncrement" value="3"></property> <!-- 控制數據源內加載的PreparedStatements數量。如果maxStatements與maxStatementsPerConnection均爲0,則緩存被關閉。Default: 0 --> <property name="maxStatements" value="8"></property> <!--maxStatementsPerConnection定義了連接池內單個連接所擁有的最大緩存statements數。Default: 0 --> <property name="maxStatementsPerConnection" value="5"></property> <!--最大空閒時間,1800秒內未使用則連接被丟棄。若爲0則永不丟棄。Default: 0 --> <property name="maxIdleTime" value="1800"></property> </bean> </property> </bean> <!-- 配置聲明式事務管理(採用註解的方式) --> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <tx:annotation-driven transaction-manager="txManager"/> </beans>
其中
jdbc.properties
內容爲:
jdbcUrl = jdbc:mysql://localhost:3306/ItcastOA driverClass = com.mysql.jdbc.Driver user = root password =123
註釋掉hibernate.cfg.xml中的數據庫連接池對象
2、在testSping中添加
//測試sessionFactory @Test public void testSessionFactory() throws Exception { SessionFactory sessionFactory =(SessionFactory) ac.getBean("sessionFactory"); System.out.println(sessionFactory); }