Spring容器启动配置

什么时候spring容器启动?其实就是程序中执行加载 web.xml配置文件的时候。

Spring可以通过（Servlet）org.springframework.web.context.ContextLoaderServlet和Listener（org.springframework.web.context.ContextLoaderListener）两个类作为Spring启动的入口。

• 1.应用程序下加载

ApplicationContext context = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");

applicationContext.xml内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
 
<beans>
    <!-- dataSource config -->
    <bean id ="dataSource" class ="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> 
        <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
        <property name="url" value="jdbc:mysql://localhost:3306/game" /> 
        <property name="username" value="root" /> 
        <property name="password" value="root"/> 
    </bean> 
    
    <!-- SessionFactory -->
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

        <property name="dataSource">
            <ref bean="dataSource"/>
        </property>
        <property name="configLocation">
            <value>classpath:com\sterning\bean\hibernate\hibernate.cfg.xml</value>
        </property>        
    </bean>
    
    <!-- TransactionManager  不过这里暂时没注入-->
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory">
            <ref local="sessionFactory"/>
        </property>
    </bean>
    
    <!-- DAO -->
    <bean id="booksDao" class="com.sterning.books.dao.hibernate.BooksMapDao">
        <property name="sessionFactory">
            <ref bean="sessionFactory"/>
        </property>
    </bean>
    
    <!-- Services -->
    <bean id="booksService" class="com.sterning.books.services.BooksService">
        <property name="booksDao">
            <ref bean="booksDao"/>
        </property>
    </bean>
    
    <bean id="pagerService" class="com.sterning.commons.PagerService"/>
    
    <!-- view -->
    <bean id="bookAction" class="com.sterning.books.web.actions.BooksAction" singleton="false">
        <property name="booksService">
            <ref bean="booksService"/>
        </property>
        <property name="pagerService">
            <ref bean="pagerService"/>
        </property>
    </bean>  
    
</beans>

 

• 2.web模式下加载

web.xml:
   <context-param>
           <param-name>log4jConfigLocation</param-name>
          <param-value>/WEB-INF/classes/log4j.properties</param-value>
  </context-param>
 <!-- ContextConfigLocation -->
 <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>/WEB-INF/spring-context/applicationContext.xml</param-value>
   </context-param>
   
 <!-- Listener contextConfigLocation -->
   <listener>
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
   </listener>
 <!-- Listener log4jConfigLocation -->
   <listener>
     <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
   </listener>

 

另外参考：

http://hi.baidu.com/aimy_xmu/blog/item/1c2a969b715d4cb0c9eaf4ee.html