Spring Boot - Writing media (image, mp3, mp4) file to response output stream

Question

I am new to Servlets and Spring Framework. I try to get media files from directory through Rest Service.

For videos/mp4 I couldn't find anything.

For audio I did this: Writing mp3 file to response output stream

For images I did this:

@RequestMapping("/tmp/{uuid}")
@ResponseBody
public ResponseEntity<InputStreamResource> getTmp(@PathVariable("uuid") String uuid)
        throws IOException {

    Path path = Paths.get("/media/psmaster/HDD/TUC-IPS/" + uuid);
    String contentType = Files.probeContentType(path);
    FileSystemResource file = new FileSystemResource("/media/psmaster/HDD/TUC-IPS/" + uuid);
    return ResponseEntity
            .ok()
            .contentLength(file.contentLength())
            .contentType(
                    MediaType.parseMediaType(contentType))
            .body(new InputStreamResource(file.getInputStream()));
}

Can someone please help to figure out the problem?

Answer 1

If you are using Spring 4.2 you can use StreamingResponseBody, Have a look at this post

Answer 2

You can also give Spring Content a look. It allows you to build content services very quickly and easily using similar programming techniques to Spring Data. You can also pair it with Spring Data to additionally store and search metadata for your videos. By defining a single interface and including the appropriate Spring Content dependency in your project you can create a set of REST endpoints that allow you to manage the full lifecycle of a video including streaming.

Answer 3

You can write media using streams and HttpServletResponse:

@RequestMapping(value = "/image/{imgName}", method = RequestMethod.GET)
public void getImageAsByteArray(@PathVariable String imgName , HttpServletResponse response) throws IOException {
    InputStream in = servletContext.getResourceAsStream("/WEB-INF/images/" + imgName);
    response.setContentType(MediaType.IMAGE_JPEG_VALUE);
    IOUtils.copy(in, response.getOutputStream());
}

The example above serves an image file.

Hope this helps