<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <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>*.action</url-pattern>
  </filter-mapping>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>

    struts2总配置文件：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
      <!-- 常量配置 -->
        <!-- 禁用动态方法访问 -->
    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
    <!-- 配置成开发模式 -->
    <constant name="struts.devMode" value="false" />
    <!-- 配置拓展名为action -->
    <constant name="struts.action.extention" value="action" />
    <!-- 把主题配置成simple -->
    <constant name="struts.ui.theme" value="simple" />
    
    <!-- 导入配置文件 -->
    <include file="it/cast/test/config/test-struts.xml"></include>
    
</struts>

test-struts.xml配置文件，注意:这个可以根据你具体的需要引入到配置文件,这只是个例子!

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
    <package name="test-struts" extends="struts-default">
         <action name="test_*" class="it.cast.test.action.TestAction" method="{1}">
             <result name="success">test/jsp/test.jsp</result>
         </action>
    </package>
</struts>

    spring总配置文件

<?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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    
  
     
     <!-- 导入外部的properties配置文件 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!-- 配置c3p0数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="jdbcUrl" value="${jdbcUrl}"></property>
        <property name="driverClass" value="${driverClass}"></property>
        <property name="user" value="${user}"></property>
        <property name="password" value="${password}"></property>
        <!--初始化时获取三个连接，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
        <property name="initialPoolSize" value="${initialPoolSize}"></property>
        <!--连接池中保留的最小连接数。Default: 3 -->
        <property name="minPoolSize" value="3"></property>
        <!--连接池中保留的最大连接数。Default: 15 -->
        <property name="maxPoolSize" value="${maxPoolSize}"></property>
        <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
        <property name="acquireIncrement" value="3"></property>
        <!--最大空闲时间，1800秒内未使用则连接被丢弃，若为0则永不丢弃。Default: 0 -->
        <property name="maxIdleTime" value="1800"></property>
    </bean>
    
    <!--创建sessionFactory-->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>

        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="javax.persistence.validation.mode">none</prop>
            </props>
        </property>


        <property name="mappingLocations">
            <list>
                <value>classpath:cn/itcast/nsfw/user/entity/*.hbm.xml</value> 
                <value>classpath:it/cast/test/entity/*.hbm.xml</value>
            </list>
        </property>
    </bean>
    
    
    <!-- 事务管理开始-->
        <!--事务管理-->
        <bean id="txManager"
            class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
        </bean>
        <!--  事务通知-->
        <tx:advice id="txAdvice" transaction-manager="txManager">
           <tx:attributes>
                <tx:method name="find*" read-only="true" />
                <tx:method name="get*" read-only="true" />
                <tx:method name="load*" read-only="true" />
                <tx:method name="list*" read-only="true" />
                <tx:method name="search*" read-only="true" />
                <tx:method name="*" rollback-for="Throwable" />
            </tx:attributes>
        </tx:advice>

        <!--  配置需要进行事务控制的类 -->
        <aop:config>
            <aop:pointcut id="serviceOperation" expression="bean(*Service)" />
            <aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation" />
        </aop:config>
    <!-- 事务管理结束 -->
    
        <!-- 所有业务dao的parent -->
    <bean id="baseDao" abstract="true">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    
      <!--导入配置文件-->
     <import resource="classpath:it/cast/test/config/*-applicationContext.xml"/>
     <import resource="classpath:cn/itcast/nsfw/*/config/*-spring.xml"/>
</beans>

    (4)注意事项:
   web.xml, struts2和spring总配置文件必须引入, 导入局部配置文件。根据项目具体的需求修改代码!
   应该清楚框架整合部分的细节
   （5）自己写一个例子吧,  实践出真理啊!