initMethod 和 afterPropertiesSet 以及 AwareMethod方法的执行时机

    protected Object doCreateBean(final String beanName, final RootBeanDefinition mbd, final Object[] args) {
        // Instantiate the bean.
        BeanWrapper instanceWrapper = null;
        if (mbd.isSingleton()) {
            instanceWrapper = this.factoryBeanInstanceCache.remove(beanName);
        }
        if (instanceWrapper == null) {
            instanceWrapper = createBeanInstance(beanName, mbd, args);
        }
        //...省略很多代码 下面开始初始化 关键就是两个步骤
        // Initialize the bean instance.
        Object exposedObject = bean;
        try {
            populateBean(beanName, mbd, instanceWrapper);   //这里执行了注入属性和依赖的操作
            if (exposedObject != null) {
                exposedObject = initializeBean(beanName, exposedObject, mbd);//这里执行了initMethod 和 afterPropertiesSet
            }
        }
         //...省略很多代码 
        return exposedObject;
    }

    protected Object initializeBean(final String beanName, final Object bean, RootBeanDefinition mbd) {
        if (System.getSecurityManager() != null) {
            AccessController.doPrivileged(new PrivilegedAction<Object>() {
                public Object run() {
                    invokeAwareMethods(beanName, bean);

                    return null;
                }
            }, getAccessControlContext());
        }
        else {
            //这里判断是BeanFactoryAware, ServletContextAware之类的aware类型，如果是的话就执行对于的Aware方法
            //把beanFactory啊 servletContext啊之类的依赖set进去
            invokeAwareMethods(beanName, bean);
        }
        
        Object wrappedBean = bean;
        if (mbd == null || !mbd.isSynthetic()) {   
            //如果实现了BeanPostProcessor接口 这里会执行postProcessBeforeInitialization方法
            wrappedBean = applyBeanPostProcessorsBeforeInitialization(wrappedBean, beanName);
        }
        try {
            //这里就开始执行initMethod 和 afterPropertiesSet方法
            invokeInitMethods(beanName, wrappedBean, mbd);
        }
        catch (Throwable ex) {
            throw new BeanCreationException(
                    (mbd != null ? mbd.getResourceDescription() : null),
                    beanName, "Invocation of init method failed", ex);
        }
        if (mbd == null || !mbd.isSynthetic()) {
            wrappedBean = applyBeanPostProcessorsAfterInitialization(wrappedBean, beanName);
        }
        return wrappedBean;
    }

    protected void invokeInitMethods(String beanName, final Object bean, RootBeanDefinition mbd)
            throws Throwable {
        boolean isInitializingBean = (bean instanceof InitializingBean);//先判断是否实现了InitializingBean接口
        if (isInitializingBean && (mbd == null || !mbd.isExternallyManagedInitMethod("afterPropertiesSet"))) {
             //.....省略很多代码            
            else {
                //执行afterPropertiesSet()方法
                ((InitializingBean) bean).afterPropertiesSet(); 
            }
        }
        if (mbd != null) {
            String initMethodName = mbd.getInitMethodName();
            if (initMethodName != null && !(isInitializingBean && "afterPropertiesSet".equals(initMethodName)) &&
                    !mbd.isExternallyManagedInitMethod(initMethodName)) {
                //如果配置了initMethod 就执行initMethod方法 这里只是取到了方法名，显然是要通过反射调用了
                invokeCustomInitMethod(beanName, bean, mbd);
            }
        }
    }