SpringServletContext.java 文件源码

protected WebApplicationContext applicationContext() {
    if (applicationContext == null) {
        AnnotationConfigWebApplicationContext webApplicationContext = new AnnotationConfigWebApplicationContext();

        Set<Class<?>> annotatedClasses = annotatedClasses();
        if (annotatedClasses != null) {
            annotatedClasses.iterator().forEachRemaining(webApplicationContext::register);
        }

        Set<? extends BeanFactoryPostProcessor> beanFactoryPostProcessors = beanFactoryPostProcessors();
        if (beanFactoryPostProcessors != null) {
            beanFactoryPostProcessors.iterator().forEachRemaining(webApplicationContext::addBeanFactoryPostProcessor);
        }

        if (this.rootApplicationContext != null) {
            webApplicationContext.setParent(this.rootApplicationContext);
            webApplicationContext.setEnvironment((ConfigurableEnvironment) rootApplicationContext.getEnvironment());
        }

        applicationContext = webApplicationContext;
    }

    return (WebApplicationContext) applicationContext;
}