SpringBoot（二）核心原理

SpringBoot

 1.自动装配原理：

在BeanFactoryPostProcessor实现类里面ConfigurationClassPostProcessor，实现自动装配

核心代码 ：

@Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) {
        int factoryId = System.identityHashCode(beanFactory);
        if (this.factoriesPostProcessed.contains(factoryId)) {
            throw new IllegalStateException(
                    "postProcessBeanFactory already called on this post-processor against " + beanFactory);
        }
        this.factoriesPostProcessed.add(factoryId);
        if (!this.registriesPostProcessed.contains(factoryId)) {
            // BeanDefinitionRegistryPostProcessor hook apparently not supported...
            // Simply call processConfigurationClasses lazily at this point then.
            processConfigBeanDefinitions((BeanDefinitionRegistry) beanFactory);
        }
         //扫描相关注解类
        enhanceConfigurationClasses(beanFactory);
        beanFactory.addBeanPostProcessor(new ImportAwareBeanPostProcessor(beanFactory));
    }
//ConfigurationClassParser
doProcessConfigurationClass(configClass, sourceClass);

ConfigurationClassPostProcessor.postProcessBeanFactory