SpringBoot-EnvironmentPostProcessor

如果一个类实现了EnvironmentPostProcessor接口，则会在下面这个方法中轮询调用postProcessEnvironment（后期处理方法），所以如果调试，断点直接打在这里即可

private void onApplicationEnvironmentPreparedEvent(ApplicationEnvironmentPreparedEvent event) {
		// 拿到所有实现了EnvironmentPostProcessor接口的实例
		List postProcessors = loadPostProcessors();
		postProcessors.add(this);
		AnnotationAwareOrderComparator.sort(postProcessors);
		for (EnvironmentPostProcessor postProcessor : postProcessors) {
			postProcessor.postProcessEnvironment(event.getEnvironment(), event.getSpringApplication());
		}
	}