SSH的整合

所谓SSH,就是讲Struts1/Struts2,Spring,Hibernate三种技术的整合.
这三种技术的整合方式有多种,据我所知有如下这几种整合方式:
1.Spring与Struts的整合.
   这里有两种主要的整合方式,其一,他们各司其职,个高个的.其二,将Struts的Action交由Spring管理(这种很少用到)

2.Spring 与 Hibernate的整合
  也分为两种,一是有Hibernate.cfg.xml文件.他的配置如下:
ApplicationContext.xml中

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

Hibernate.cfg.xml中照常配置;如下

<?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">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

<session-factory>
	<property name="dialect">
		org.hibernate.dialect.SQLServerDialect
	</property>
	<property name="connection.url">
		jdbc:jtds:sqlserver://localhost:1433;databasename=tt;
	</property>
	<property name="connection.username">sa</property>
	<property name="connection.password">sa</property>
	<property name="connection.driver_class">
		net.sourceforge.jtds.jdbc.Driver
	</property>
	<property name="myeclipse.connection.profile">
		sqlserver2000
	</property>
	<property name="show_sql">true</property>
	<property name="format_sql">false</property>
	<property name="connection.autocommit">true</property>
	<property name="hbm2ddl.auto">update</property>
	<mapping resource="com/baidu/ssh/bean/TtBean.hbm.xml" />



</session-factory>

</hibernate-configuration>

可以是oracle,Mysql,DB2等等.
他们第二种整合方式是 在ApplicationContext.xml中配置SessionFactory,配置数据源,省略掉了hibernate.cg.xml文件;
配置如下:
在ApplicationContext.xml中.

<!-- 数据源 -->
	 <bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName">
			<value>net.sourceforge.jtds.jdbc.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:jtds:sqlserver://localhost:1433;databasename=tt</value>
		</property>
		<property name="username" value="sa"></property>
		<property name="password" value="sa"></property>
<!--这里还可以配置数据库连接池 -->
<!-- 连接池 -->
		<property name="maxPoolSize" value="40"></property>
		<property name="minPoolSize" value="1"></property>
		<property name="initialPoolSize" value="1"></property>
		<property name="maxIdleTime" value="20"></property>
		<property name="checkoutTimeout" value="1800"></property>
		<property name="acquireIncrement" value="2"></property>
		<property name="maxStatements" value="500"></property>
	</bean> 
!-- 配置hibernate SessionFactory -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="datasource"></property>
		<property name="mappingResources">
			<list>
				<value>com/baidu/ssh/bean/TtBean.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">false</prop>
				<prop key="hibernate.connection.autocommit">true</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
			</props>
		</property>
	</bean>

那么这三种技术的整合,最常用的就是,SessionFactory交由Spring管理,Struts自行管理.
主要配置如下:

<beans
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

	<!-- 数据源 -->
	 <bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName">
			<value>net.sourceforge.jtds.jdbc.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:jtds:sqlserver://localhost:1433;databasename=tt</value>
		</property>
		<property name="username" value="sa"></property>
		<property name="password" value="sa"></property>
	</bean> 
	 <bean id="datasource2" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName">
			<value>net.sourceforge.jtds.jdbc.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:jtds:sqlserver://localhost:1433;databasename=tt</value>
		</property>
		<property name="username" value="sa"></property>
		<property name="password" value="sa"></property>
	</bean> 
	

	
	<!-- 配置hibernate Factory -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="datasource"></property>
		<property name="mappingResources">
			<list>
				<value>com/baidu/ssh/bean/TtBean.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">false</prop>
				<prop key="hibernate.connection.autocommit">true</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
			</props>
		</property>
	</bean>
	

	<bean id="ttDaoImplHb" class="com.baidu.ssh.dao.hb.TtDaoImplHb">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>



	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="datasource2"></property>
	</bean>

	<bean id="ttDaoImplJdbc" class="com.baidu.ssh.dao.jdbc.TtDaoImplJdbc">
		<property name="template" ref="jdbcTemplate"></property>
	</bean>