怎么使用DeBug深入源码

使用DeBug深入Spring-IOC容器的创建过程

1.写出测试程序并打上断点

2.进入Debug模式

3.Debug界面认识

4.享受Debug模式，若没有源码，自行导入

IOC容器初始化的核心代码

AbstractApplicationContext

public   void   refresh()   throws   BeansException, IllegalStateException {

         synchronized   ( this . startupShutdownMonitor ) {

             // Prepare this context for refreshing.

            prepareRefresh();

             // Tell the subclass to refresh the internal bean factory.

            ConfigurableListableBeanFactory beanFactory = obtainFreshBeanFactory();

             // Prepare the bean factory for use in this context.

            prepareBeanFactory(beanFactory);

             try   {

                 // Allows post-processing of the bean factory in context subclasses.

                postProcessBeanFactory(beanFactory);

                 // Invoke factory processors registered as beans in the context.

                invokeBeanFactoryPostProcessors(beanFactory);

                 // Register bean processors that intercept bean creation.

                registerBeanPostProcessors(beanFactory);

                 // Initialize message source for this context.

                initMessageSource();

                 // Initialize event multicaster for this context.

                initApplicationEventMulticaster();

                 // Initialize other special beans in specific context subclasses.

                onRefresh();

                 // Check for listener beans and register them.

                registerListeners();

                 // Instantiate all remaining (non-lazy-init) singletons.

                finishBeanFactoryInitialization(beanFactory);

                 // Last step: publish corresponding event.

                finishRefresh();

            }

             catch   (BeansException ex) {

                 // Destroy already created singletons to avoid dangling resources.

                destroyBeans();

                 // Reset 'active' flag.

                cancelRefresh(ex);

                 // Propagate exception to caller.

                 throw   ex;

            }

        }

    }