spring如何自动加载资源的？

spring.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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="
http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-4.2.xsd
">

    <!-- 引入属性文件 -->
    <context:property-placeholder location="classpath:config.properties" />

    <!-- 自动扫描dao和service包(自动注入) -->
    <context:component-scan base-package="com.itron.dao,com.itron.service" />

</beans>

spring-hibernate.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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="
http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
http://www.springframework.org/schema/tx 
http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
">

    <!-- 配置数据源 -->
    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">

        <!-- 数据源驱动类可不写，Druid默认会自动根据URL识别DriverClass -->
        <property name="driverClassName" value="${driverClassName}" />

        <!-- 基本属性 url、user、password -->
        <property name="url" value="${jdbc_url}" />
        <property name="username" value="${jdbc_username}" />
        <property name="password" value="${jdbc_password}" />

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="3" />
        <property name="minIdle" value="3" />
        <property name="maxActive" value="20" />

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="60000" />

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000" />

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000" />

        <property name="validationQuery" value="${validationQuery}" />
        <property name="testWhileIdle" value="true" />
        <property name="testOnBorrow" value="false" />
        <property name="testOnReturn" value="false" />

        <!-- 配置监控统计拦截的filters -->
        <property name="filters" value="stat" />

    </bean>

    <!-- 配置hibernate session工厂 -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
                <prop key="hibernate.dialect">${hibernate.dialect}</prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
                <prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
            </props>
        </property>

        <!-- 自动扫描注解方式配置的hibernate类文件 -->
        <property name="packagesToScan">
            <list>
                <value>com.itron.model</value>
            </list>
        </property>
    </bean>

    <!-- 配置事务管理器 -->
    <bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <!-- 注解方式配置事物 -->
    <tx:annotation-driven transaction-manager="transactionManager" />

</beans>

两者是如何关联的？

我记得如果主文件想和子文件关联，需要导入，这个是如何关联的呢？

在web.xml中会有对于spring的配置

例如有两个spring文件
spring-hibernate.xml
spring-context.xml

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-*.xml;</param-value>
    </context-param>

用通配符，搞定

http://blog.csdn.net/yang7678287/article/details/52963365