六、增加二级缓存
1.Employee.hbm.xml中
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.myz.domain"> <class name="Employee" table="employee"> <cache usage="read-write"/> <id name="id" type="java.lang.Integer"> <generator class="assigned"></generator> </id> <property name="name" type="java.lang.String"> <column name="name"></column> </property> <property name="email" type="java.lang.String"> <column name="email" length="64"></column> </property> <property name="hiredate"> <column name="hiredate"></column> </property> <property name="salary" type="java.lang.Float"> <column name="salary"></column> </property> <property name="password" type="java.lang.String"> <column name="password"></column> </property> <property name="grade" type="java.lang.Integer"> <column name="grade"></column> </property> </class> </hibernate-mapping>
2.applicationContext.xml中
<?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"> <!-- 配置数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/ssh"></property> <property name="username" value="root"></property> <property name="password" value="123456"></property> <!-- 连接池启动时的初始值 --> <property name="initialSize" value="3"></property> <!-- 连接池的最大值 --> <property name="maxActive" value="500"></property> <!-- 最大空闲值，当经过一个高峰时间后，连接池可以慢慢讲已经不用的一些链接慢慢释放一部分，抑制减少到最小空闲值 --> <property name="maxIdle" value="2"></property> <!-- 最小空闲值 ，当空闲的连接数少于阀值，连接池就会预申请一些连接，以免洪峰来时来不及申请--> <property name="minIdle" value="1"></property> </bean> <!-- 配置会话工厂 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <!-- 设置数据源 --> <property name="dataSource" ref="dataSource"></property> <!-- 接管hibernate对象映射文件 --> <property name="mappingResources"> <list> <value>com/myz/domain/Employee.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <value> hibernate.dialect=org.hibernate.dialect.MySQLDialect hibernate.hbm2ddl.auto=update hibernate.show_sql=true hibernate.format_sql=true hibernate.cache.use_second_level_cache=true; hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider hibernate.generate_statistics=true </value> </property> </bean> <bean id="employeeService" class="com.myz.service.imps.EmployeeService"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- 配置事物管理器，统一管理sessionFactory的事务 --> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- 启用事务注解扫描 --> <tx:annotation-driven transaction-manager="txManager"/> </beans>
<?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.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <!-- 配置数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/ssh"></property> <property name="username" value="root"></property> <property name="password" value="123456"></property> <!-- 连接池启动时的初始值 --> <property name="initialSize" value="3"></property> <!-- 连接池的最大值 --> <property name="maxActive" value="500"></property> <!-- 最大空闲值，当经过一个高峰时间后，连接池可以慢慢讲已经不用的一些链接慢慢释放一部分，抑制减少到最小空闲值 --> <property name="maxIdle" value="2"></property> <!-- 最小空闲值 ，当空闲的连接数少于阀值，连接池就会预申请一些连接，以免洪峰来时来不及申请 --> <property name="minIdle" value="1"></property> </bean><!-- 配置会话工厂 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><!-- 设置数据源 --> <property name="dataSource" ref="dataSource"></property> <!-- 接管hibernate对象映射文件 --> <property name="mappingResources"> <list> <value>com/myz/domain/Employee.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <value>hibernate.dialect=org.hibernate.dialect.MySQLDialecthibernate.hbm2ddl.auto=updatehibernate.show_sql=truehibernate.format_sql=truehibernate.cache.use_second_level_cache=true;hibernate.cache.provider_class=org.hibernate.cache.EhCacheProviderhibernate.generate_statistics=true </value> </property> </bean> <bean id="employeeService" class="com.myz.service.imps.EmployeeService"> <property name="sessionFactory" ref="sessionFactory"></property> </bean><!-- 配置事物管理器，统一管理sessionFactory的事务 --> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean><!-- 启用事务注解扫描 --> <tx:annotation-driven transaction-manager="txManager" /> </beans>
