ApplicationContextCreator.java 文件源码

public static ApplicationContext buildAppContext(ApplicationContext parent, Stream<TestBean> beans, Collection<BeanFactoryPostProcessor> postProcessors) {
    final DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
    final GenericApplicationContext applicationContext = new GenericApplicationContext(beanFactory, parent);

    postProcessors.forEach(applicationContext::addBeanFactoryPostProcessor);

    beans.forEach(entry -> {
        final String factoryBean = entry.getName() + "_factory";
        beanFactory.registerSingleton(factoryBean, (Supplier<Object>) entry::getBean);
        beanFactory.registerBeanDefinition(entry.getName(), BeanDefinitionBuilder
                .rootBeanDefinition(entry.getBean() != null ? entry.getBean().getClass() : Object.class)
                .setFactoryMethodOnBean("get", factoryBean)
                .getBeanDefinition());
    });

    applicationContext.refresh();

    return applicationContext;
}