Struts+Spring+Hibernate整合
这段笔记三两年前写的，一直因为一些琐事，或者搞忘记了，没有发。今天偶然翻出了它，就和大家一起分享下吧。
1.导入jar包
Struts的jar包：
Spring的jar包：
Hibernate的jar包：
注意：只保留一个高版本的common-logging.jar包，Struts的jar包中struts2-spring-plugin-2.1.8.jar是必须要导入的，因为其是整合Struts和Spring的一个关键性jar包
2.Hibernate和Spring的整合
建议先整合Spring和Hibernate。2.1方法一 保留hibernate.cfg.xml文件
Hibernate的hibernate.cfg.xml代码不变，如下示例：<!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="connection.driver_class">
oracle.jdbc.driver.OracleDriver
</property>
<property name="connection.url">
jdbc:oracle:thin:@localhost:1521:orcl
</property>
<property name="connection.username">admin</property>
<property name="connection.password">admin</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.max_statements">1</property>
<property name="hibernate.c3p0.timeout">1800</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.dialect">
org.hibernate.dialect.Oracle10gDialect
</property>
<property name="show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<mapping resource="com/wzm/bean/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Spring的application.xml文件整合Hibernate代码如下：
<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"> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="configLocation" value="classpath:hibernate.cfg.xml"> </property> </bean> </beans>
2.2 方法二 废弃使用hibernate.cfg.xml文件
将数据库的配置放在Spring的配置文件application.xml文件中，代码如下：<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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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 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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <context:component-scan base-package="com.wzm"/> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="oracle.jdbc.driver.OracleDriver"/> <property name="jdbcUrl" value="jdbc:oracle:thin:@localhost:1521:orcl"/> <property name="user" value="admin"/> <property name="password" value="admin"/> <property name="maxPoolSize" value="20"/> <property name="minPoolSize" value="1"/> <property name="initialPoolSize" value="1"/> <property name="maxIdleTime" value="20"/> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="mappingResources"> <list> <value>com/wzm/bean/User.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <value> hibernate.dialect=org.hibernate.dialect.Oracle10gDialect hibernate.hbm2ddl.auto=update hibernate.show_sql=true </value> </property> </bean> </beans>
2.3 使用properties文件提供数据库接口
这里的接口并非Java中的接口，而是指提供可扩展的接入点，properties文件中的代码如下：URL=jdbc:oracle:thin:@localhost:1521:orcl DRIVER=oracle.jdbc.driver.OracleDriver USERNAME=admin PASSWORD=admin #URL=jdbc:jtds:sqlserver://localhost:1433/qhit02 #DRIVER=net.sourceforge.jtds.jdbc.Driver #USERNAME=sa #PASSWORD=sa1234该文件中提供了Oracle11g和SQL Server两种数据库接口（接入点），甚至可以写入更多的数据库的信息，“#”是注销，即其后的代码不可用。
Spring的application.xml中的配置代码如下：
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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
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
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<context:component-scan base-package="com.wzm"/>
<context:property-placeholder location="classpath:DBOption.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${DRIVER}"/>
<property name="jdbcUrl" value="${URL}"/>
<property name="user" value="${USERNAME}"/>
<property name="password" value="${PASSWORD}"/>
<property name="maxPoolSize" value="20"/>
<property name="minPoolSize" value="1"/>
<property name="initialPoolSize" value="1"/>
<property name="maxIdleTime" value="20"/>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mappingResources">
<list>
<value>com/wzm/persistence/entiy/User.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.Oracle10gDialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=true
</value>
</property>
</bean>
</beans>
3.整合Struts和Spring
整合Struts和Spring时，只需在WebRoot\WEB-INF\web.xml文件中加入Struts的过滤器和Spring的监听器即可，代码如下：<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置监听器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:application.xml
<span style="background-color: rgb(255, 0, 0);">（注意：配置多个Spring Bean文件时，这样写classpath:applicationContext.xml,classpath:bean.xml）</span>
</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>