ssh整合：spring与hibernate的整合

ssh的整合主要是spring与hibernate +  spring与struts的整合，struts的逻辑中使用业务层的对象只需使用spring的ioc得到需要的依赖对象。

一、spring与hibernate

spring与hibernate的整合有2种方式，一种是把hibernate的配置放在spring的配置中，一种是独立在spring外

hibernate独立在外：

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:aop="http://www.springframework.org/schema/aop"   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">   <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">   <property name="configLocations">   <value>classpath:hibernate.cfg.xml</value>   </property>  </bean> </bean>  </beans>

使用注解：

<!-- sessionFactory定义 --> <bean id="sessionFactory"    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"><!--使用注解-->  <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>  <property name="packagesToScan">   <list>    <value>cn.jiabeis.s2shstudy.model</value>   </list>  </property>

 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>        <!-- Database connection settings -->        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>        <property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property>        <property name="connection.username">root</property>        <property name="connection.password">***</property>        <!-- JDBC connection pool (use the built-in) -->        <property name="connection.pool_size">10</property>        <!-- SQL dialect -->        <property name="dialect">org.hibernate.dialect.MySQLDialect</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>        <property name="format_sql">true</property>        <!-- Drop and re-create the database schema on startup -->        <property name="hbm2ddl.auto">update</property>        <mapping resource="com/model/User.hbm.xml"/><!--        <mapping class="com.model.User"/>-->    </session-factory></hibernate-configuration>

hibernate的配置整合在spring中：

<bean id="dataSource"   class="org.apache.commons.dbcp.BasicDataSource"   destroy-method="close">   <property name="driverClassName" value="${jdbc.driverClassName}"></property>   <property name="url" value="${jdbc.url}"></property>   <property name="username" value="${jdbc.username}"></property>   <property name="password" value="${jdbc.password}"></property></bean><!-- 配置 hibernate sessionFactory --><bean id="sessionFactory"   class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">   <property name="dataSource">         <!--可使用proxool等来作为数据源-->    <ref bean="dataSource" />   </property>   <property name="mappingDirectoryLocations">    <!--可使用mappingResources直接写出配置文件的位置-->    <list>     <value>classpath:/config/hbm/</value>    </list>   </property>   <property name="hibernateProperties">    <props>     <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>     <prop key="hibernate.connection.release_mode">auto</prop>     <prop key="hibernate.show_sql">true</prop>     <prop key="connection.useUnicode">true</prop>     <prop key="connection.characterEncoding">gbk</prop><!--出现中文乱码的问题 -->     <prop key="hibernate.query.factory_class">     org.hibernate.hql.classic.ClassicQueryTranslatorFactory</prop>    </props>   </property></bean>

数据源的配置还可通过属性文件来获得：

<context:property-placeholder location="classpath:jdbc.properties"/>

<bean id="dataSource" class="org.apache.commons.dbcp.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>

jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc/:mysql/://localhost/:3306/springjdbc.username=rootjdbc.password=31415926

通过Spring提供的HibernateTemplate操作数据库：

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">       <property name="sessionFactory" ref="sessionFactory"></property></bean>

事务管理：

<!-- 事务处理 --> <bean id ="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">         <property name ="sessionFactory">             <ref local ="sessionFactory" />         </property >     </bean >     <!-- 自动创建事务代理 --> <bean id ="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">         <property name ="transactionManager" ref ="transactionManager" />         <property name ="transactionAttributes">             <props >                 <prop key ="delete*"> PROPAGATION_REQUIRED</prop >                 <prop key ="add*"> PROPAGATION_REQUIRED</prop >                 <prop key ="update*"> PROPAGATION_REQUIRED</prop >                 <prop key ="save*"> PROPAGATION_REQUIRED</prop >                 <prop key ="find*"> PROPAGATION_REQUIRED,readOnly</prop >                 <prop key ="*"> PROPAGATION_REQUIRED</prop >             </props >         </property > </bean >

使用HibernateDaoSupport类：

@Component("logDAO") public class LogDAOImpl extends HibernateDaoSupport implements LogDAO {public void save(Log log) {this.getHibernateTemplate().save(log);}}

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">  <property name="sessionFactory" ref="sessionFactory"></property> </bean>  <bean id="logDao" class="com.zchen.spring.LogDaoImpl">  <property name="hibernateTemplate" ref="hibernateTemplate"></property> </bean>