'Springboot: controller access files through Resource Interface'

Access files through classpath.

Springboot will  scan /META-INF/resources/； /resources/； /static/ and/public/ folders when you tell it to find something in the “Classpath”. 

Using Resource interface would instantiate an ClassPathResource. 

Resource resource =new ClassPathResource("RelativePathOfYourFile, root of  /META-INF/resources/； /resources/； /static/ or /public/");
		
		try {
			String path =resource.getFile().getAbsolutePath();
			
		} catch (IOException e) { 
			// TODO Auto-generated catch block
			e.printStackTrace();
		}