Spring boot - Grabbing a file from the file system in a Get Request

Question

I am trying to grab a file (in this case an image) from the file system and display it. I can do it from a resources subdirectory just fine, but when I try to go to the file system it is giving me a FileNotFound exception.

java.io.FileNotFoundException: file:\Y:\Kevin\downloads\pic_mountain.jpg (The filename, directory name, or volume label syntax is incorrect)

All the rest of my code is vanilla spring boot that was generated from the Initialize. Thanks.

@RestController
public class ImageProducerController {

    @GetMapping("/get-text")
    public @ResponseBody String getText() {
        return "Hello World";
    }

    @GetMapping(value = "/get-jpg", produces = MediaType.IMAGE_JPEG_VALUE)
    public void getImage(HttpServletResponse response) throws IOException {

        FileSystemResource imgFile = new FileSystemResource("file:///Y:/Kevin/downloads/pic_mountain.jpg");
//        ClassPathResource imgFile = new ClassPathResource("images/pic_mountain.jpg");
        System.out.println(imgFile.getURL());
        response.setContentType(MediaType.IMAGE_JPEG_VALUE);
        StreamUtils.copy(imgFile.getInputStream(), response.getOutputStream());
    }
}

Answer 1

from the docs:

public FileSystemResource(String path)
Create a new FileSystemResource from a file path

the constructor expects a path-part of the url, so in your case only Y:/Kevin/downloads/pic_mountain.jpg

so you should try to use it this way:

FileSystemResource imgFile = new FileSystemResource("Y:/Kevin/downloads/pic_mountain.jpg");

Btw. could it be, that you miss "Users" in your path? -> Y:/Users/Kevin/downloads/pic_mountain.jpg