Spring源码情操陶冶-AbstractApplicationContext#finishRefresh

承接前文Spring源码情操陶冶-AbstractApplicationContext#finishBeanFactoryInitialization
约定web.xml配置的contextClass为默认值XmlWebApplicationContext

直接源码AbstractApplicationContext#finishRefresh

    /**
     * Finish the refresh of this context, invoking the LifecycleProcessor's
     * onRefresh() method and publishing the
     * {@link org.springframework.context.event.ContextRefreshedEvent}.
     */
    protected void finishRefresh() {
        // Initialize lifecycle processor for this context.
        //会找寻lifecycleProcessor对应的bean，否则默认采用DefaultLifecycleProcessor
        initLifecycleProcessor();

        // Propagate refresh to lifecycle processor first.
        getLifecycleProcessor().onRefresh();

        // Publish the final event.
        //其实是执行ContextRefreshedEvent该事件是针对spring mvc来的
        publishEvent(new ContextRefreshedEvent(this));

        // Participate in LiveBeansView MBean, if active.
        LiveBeansView.registerApplicationContext(this);
    }

从注释上可以得知其是完成对context的刷新，并执行LifecycleProcessor的onRefresh()方法和执行相关的ContextRefreshedEvent事件，但可惜引导DispatcherServlet进行初始化的ContextRefreshListener并不是由spring来触发的，而是由tomcat加载web.xml中的spring mvc配置文件启动的

DispatcherServlet#initStrategies

我们简单看下此段代码，spring启动只会帮助springmvc先初始化默认的策略方案，其他则由springmvc本身来执行，具体如下

    /**
     * Initialize the strategy objects that this servlet uses.
     * 
May be overridden in subclasses in order to initialize further strategy objects.
     */
    protected void initStrategies(ApplicationContext context) {
        initMultipartResolver(context);
        initLocaleResolver(context);
        initThemeResolver(context);
        initHandlerMappings(context);
        initHandlerAdapters(context);
        initHandlerExceptionResolvers(context);
        initRequestToViewNameTranslator(context);
        initViewResolvers(context);
        initFlashMapManager(context);
    }

关于spring mvc的初始化操作，我们放在后续计划中讨论，本文便不再继续深究

转载于:https://www.cnblogs.com/question-sky/p/6852804.html