spring源碼08——finishBeanFactoryInitialization(beanFactory)

調用鏈：
finishBeanFactoryInitialization(beanFactory)
---->DefaultListableBeanFactory.preInstantiateSingletons();

類名：DefaultListableBeanFactory
對符合條件的bean進行初始化，條件就是：
非抽象的，單實例的，非懶加載的

public void preInstantiateSingletons() throws BeansException {
        if (this.logger.isInfoEnabled()) {
            this.logger.info("Pre-instantiating singletons in " + this);
        }

        ArrayList beanNames;
        synchronized(this.beanDefinitionMap) {
		//獲取容器中所有的beanName
            beanNames = new ArrayList(this.beanDefinitionNames);
        }

        Iterator i$ = beanNames.iterator();
      //對符合條件的bean進行初始化：非抽象的，單實例的，非懶加載的
        while(true) {
            while(true) {
                String beanName;
                RootBeanDefinition bd;
                do {
                    do {
                        do {
                            if (!i$.hasNext()) {
                                return;
                            }

                            beanName = (String)i$.next();
                            bd = this.getMergedLocalBeanDefinition(beanName);
                        } while(bd.isAbstract());
                    } while(!bd.isSingleton());
                } while(bd.isLazyInit());
				//如果是factoryBean則按照如下處理，factory獲取bean，是getObject方法的返回值
                if (this.isFactoryBean(beanName)) {
                    final FactoryBean<?> factory = (FactoryBean)this.getBean("&" + beanName);
                    boolean isEagerInit;
                    if (System.getSecurityManager() != null && factory instanceof SmartFactoryBean) {
                        isEagerInit = (Boolean)AccessController.doPrivileged(new PrivilegedAction<Boolean>() {
                            public Boolean run() {
                                return ((SmartFactoryBean)factory).isEagerInit();
                            }
                        }, this.getAccessControlContext());
                    } else {
                        isEagerInit = factory instanceof SmartFactoryBean && ((SmartFactoryBean)factory).isEagerInit();
                    }

                    if (isEagerInit) {
                        this.getBean(beanName);
                    }
                } else {
				//通過getBeanName來獲取Bean
                    this.getBean(beanName);
                }
            }
        }
    }

通過getBeanName來獲取Bean

this.getBean(beanName);

調用鏈：
AbstractBeanFactory.getBean(java.lang.String)
AbstractBeanFactory.doGetBean