LoadServlet

public class LoadServlet extends HttpServlet implements InitializingBean {

	private List<LoaderAware> loaders = Collections.emptyList();

	@Override
	public void afterPropertiesSet() throws Exception {
		this.loaders = SpringContext.getBeanListOfType(LoaderAware.class);
	}

	@Override
	public void init() throws ServletException {
		try {
			if (CollectionUtils.isNotEmpty(this.loaders)) {
				for (LoaderAware loader : this.loaders) {
					loader.init();
				}
			}
		} catch (Exception e) {
			throw new ServletException(e);
		}
		
	}
。。。。。。。。。。
}

 

spring-base.xml里面配置

 <bean id="loadServlet" class="com.dxy.user.servlet.LoadServlet"/>

 web.xml里面配置

  <context-param>
        <description>默认加载spring配置</description>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath:com/dxy/user/config/spring-base.xml
        </param-value>
	</context-param> 

 

<servlet>
		<servlet-name>loadServlet</servlet-name>
		<servlet-class>com.dxy.user.servlet.LoadServlet</servlet-class>
		<load-on-startup>0</load-on-startup>
	</servlet>

 

<servlet>
	    <description>spring mvc servlet</description>
		<servlet-name>springMvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
		    <description>spring mvc 配置文件</description>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:com/dxy/user/config/spring-mvc.xml</param-value>
		</init-param>
		<load-on-startup>0</load-on-startup>
	</servlet>

 loadServlet的注册一定要放在spring-base.xml里面（名称不一定非要是这个）。因为我之前是将其配置在spring-mvc.xml里面。导致loadServlet里面的init方法先执行 afterPropertiesSet()后执行了。另一定要在web.xml里面配置<servlet-name>loadServlet</servlet-name>这一栏的配置，不然init方法不执行。当然就算配置了，init方法也不一定执行（<load-on-startup>0</load-on-startup>值>=0的情况下init执行）。