spring配置hibernate的sessionFactory的几种方法


1、通过配置dataSource来配置sessionFactory

 在src 目录下放入applicationContext.xml中：

<!-- 数据库配置 -->
<bean id="mydataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://192.168.0.2:3306/tuke_mmsmsys"></property>
<property name="username" value="admin"></property>
<property name="password" value="richard"></property>

<!-- Connection Pooling Info -->
<property name="maxActive" value="20" />
<property name="maxIdle" value="5" />
<property name="maxWait" value="5000" />
<property name="validationQuery" value="select count(0) from admin" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="mydataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
<property name="mappingDirectoryLocations">
<list>
<value>
classpath:com/tukechina/mms/pojos
</value>
</list>
</property>
<property name="mappingResources">
<list>
<value>classpath*:/test/domain/MyBean.hbm.xml</value>
<value>classpath*:/test/domain/BasicBean.hbm.xml</value>
</list>
</property>
<property name="packagesToScan">
<list>
<value>cn.xxx.entity</value>
</list>
</property>
</bean>

补充：使用 mappingResources 属性要一个一个写 hbm 文件（“classpath*:”指向 WEB-INF/classes 目录）
使用 mappingDirectoryLocations 属性可以指定某目录下的 hbm 文件（“classpath*:”指向 WEB-INF/classes 目录）
使用 packagesToScan属性 这个路径可以找出com/xxx/entity根目录下的类文件

2、通过加载hibernate.cfg.xml来配置sessionFactory   

在src 目录下放入applicationContext.xml

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

hibernate.cfg.xml

<?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 name="mysql">
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">1234</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/goodshool</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.show_sql">true</property>

<!-- 最大连接数 -->
<property name="hibernate.c3p0.max_size">20</property>
<!-- 最小连接数 -->
<property name="hibernate.c3p0.min_size">5</property>
<!-- 获得连接的超时时间,如果超过这个时间,会抛出异常，单位毫秒 -->
<property name="hibernate.c3p0.timeout">120</property>
<!-- 最大的PreparedStatement的数量 -->
<property name="hibernate.c3p0.max_statements">100</property>
<!-- 每隔120秒检查连接池里的空闲连接 ，单位是秒-->
<property name="hibernate.c3p0.idle_test_period">120</property>
<!-- 当连接池里面的连接用完的时候，C3P0一下获取的新的连接数 -->
<property name="hibernate.c3p0.acquire_increment">2</property>
<!-- 每次都验证连接是否可用 -->
<property name="hibernate.c3p0.validate">true</property>
<mapping resource="com/shangx/pojos/User.hbm.xml" />
</session-factory>
</hibernate-configuration>

3、通过配置jdbc.properties文件分离数据库的配置

  在src 目录下放入 jdbc.properties
Mysqljdbc.driverClassName=com.mysql.jdbc.Driver
Mysqljdbc.url=jdbc:mysql://localhost/goodshool
Mysqljdbc.username=root
Mysqljdbc.password=1234

# second cache statistics
hibernate.generate_statistics=true
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true 在src 目录下放入applicationContext.xml

<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>

<!-- 数据库配置 -->
<bean id="mysqlDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass">  <value>${Mysqljdbc.driverClassName}</value> </property>
<property name="jdbcUrl"> <value>${Mysqljdbc.url}</value> </property>
<property name="user"> <value>${Mysqljdbc.username}</value> </property>
<property name="password"> <value>${Mysqljdbc.password}</value> </property>

<property name="minPoolSize"><value>5</value></property>
<property name="acquireIncrement"> <value>2</value></property>
<property name="maxPoolSize"><value>20</value></property>
<property name="maxIdleTime"><value>600</value></property>
<property name="maxStatements" value="100"></property>
<property name="idleConnectionTestPeriod"><value>120</value> </property>
</bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="mysqlDataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.generate_statistics">${hibernate.generate_statistics}</prop>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
</props>
</property>
<property name="mappingDirectoryLocations">
<list>
<value>
classpath:com/shangx/pojos
</value>
</list>
</property>
</bean>

4、通过纯代码来配置sessionFactory

//默认读取hibernate.cfg.xml文件
Configuration config = new Configuration().configure();

File file = new File("src/com/oscar999/myhibernate.cfg.xml");
Configuration config = new Configuration().configure(file);

//在Hibernate 3中
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();

//在Hibernate 4中
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);

//注解
ApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContext(event.getServletContext());
SessionFactory sessionFactory = (SessionFactory)applicationContext.getBean("sessionFactory", SessionFactory.class);

Configuration configuration = new Configuration().setProperty("hibernate.connection.driver_class", "com.mysql.jdbc.Driver")
.setProperty("hibernate.connection.url", "jdbc:mysql://192.168.**.***/mall_db")
.setProperty("hibernate.connection.username", "***")
.setProperty("hibernate.connection.password", "***")
.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect")
.setProperty("hibernate.hbm2ddl.auto", "update");

ServiceRegistry registry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
SessionFactory factory = configuration.buildSessionFactory(registry);
Session session = factory.getCurrentSession();

上面这个方法需要导入其他的jar包。

Configuration configuration = new Configuration().addClass(com.oscar999.Usr.class);
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
Session session = sessionFactory.openSession();
session.beginTransaction();
session.save(new Usr("uesr3"));
session.getTransaction().commit();
session.close();
sessionFactory.close();