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>