Spring4.2.8版本官方文档说明，这一版本的Spring强烈建议使用Hibernate5，而且Hibernate3.6版本以上才支持，低版本的Hibernate只好选择与之相适应的Spring版本，此例中采用Hibernate4.3.11版本。
Hibernate配置文件，由于使用Spring，数据库连接池等配置可以有选择配置到spring文件中，这样Hibernate配置文件就可以尽可能简化。
<?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>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- <property name="current_session_context_class">jta</property> -->
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.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>
<!-- maping 可以在spring中配置 -->
<!-- <mapping resource="conf/hibernate/domain/Music.hbm.xml"/> -->
<!-- <mapping class="org.lian.domain.Group" /> -->
</session-factory>
</hibernate-configuration>
需要指出的是上面的hibernate配置文件是可选的，可以完全将配置文件内容配置到spring文件。
Spring配置文件 分两步配置 第一配置数据源 第二配置SessionFactory
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 使用spring注解 -->
<!-- <context:annotation-config/> -->
<!-- 下面的配置告诉spring容器自动scanner用注解标注bean -->
<context:component-scan base-package="org.lian"/>
<!--配置数据源 -->
<!-- <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean> -->
<!-- 配置Druid数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<!-- 基本属性 url、user、password -->
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- 配置初始化大小、最小、最大 -->
<property name="initialSize" value="1" />
<property name="minIdle" value="1" />
<property name="maxActive" value="20" />
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="60000" />
<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000" />
<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="300000" />
<property name="validationQuery" value="SELECT 'x'" />
<property name="testWhileIdle" value="true" />
<property name="testOnBorrow" value="false" />
<property name="testOnReturn" value="false" />
<!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
<!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 -->
<property name="filters" value="stat" />
</bean>
<!-- 配置Hibernate SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" lazy-init="false">
<!-- 注入datasource，给sessionfactoryBean内setdatasource提供数据源 -->
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:conf/hibernate/hibernate.cfg.xml"></property>
<!-- //加载实体类的映射文件位置及名称 -->
<property name="mappingLocations" value="classpath:conf/hibernate/domain/*.hbm.xml"></property>
<property name="packagesToScan" value="org.lian.**.domain"></property>
</bean>
<context:property-placeholder location="classpath*:conf/datasource/jdbc.properties"/>
</beans>
Dao层中使用SessionFactory
@Repository("musicH4Dao")
public class MusicH4DaoImpl implements MusicDao {
@Autowired
private SessionFactory sessionFactory;
@Override
public String get(Music music) {
Session session = sessionFactory.openSession();
try {
String sql = "from Music as music where music.id = :id ";
Music bean = (Music) session.createQuery(sql)
.setParameter("id", music.getId()).uniqueResult();
return GsonUtil.getInstance().convertToJson(bean);
} finally {
session.close();
}
}
@Override
public String list(Music music) {
String sql = "from Group as group where group.id = :id ";
Session session = sessionFactory.openSession();
try {
@SuppressWarnings("unchecked")
List<Group> list = session.createQuery(sql)
.setParameter("id", music.getId()).list();
return GsonUtil.getInstance().convertToJson(list);
} finally {
session.close();
}
}
}
测试代码
public class Main {
public static void main(String[] args) {
String classPath = "classpath*:conf/spring/app_hibernate.xml";
ApplicationContext context = new ClassPathXmlApplicationContext(classPath);
MusicDao dao = context.getBean("musicH4Dao", MusicDao.class);
Music music = new Music();
music.setId("123");
System.out.println(dao.get(music));
music.setId("297ed3f359058806015905880d110000");
System.out.println(dao.list(music));
}
}