1.在web.xml配置启动的listener

    <listener>
        <listener-class>com.my.core.web.listener.SpringLoaderListener</listener-class>
    </listener>

启动容器的代码

public class SpringLoaderListener extends ContextLoaderListener
{
  public void contextInitialized(ServletContextEvent event)
  {
    super.contextInitialized(event);
    ServletContext context = event.getServletContext();
//设置容器为Servlet容器
    ContextUtil.setServletContext(context);  
/*WebApplicationContextUtils是org.springframework.web.context.support. 
 WebApplicationContextUtils中的类*/
    ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(context);
    ContextUtil.setContext(ctx);
  }
}