UploadController.java 文件源码

@GetMapping(value = BASE_PATH + "/" + FILENAME + "/raw",
    produces = MediaType.IMAGE_JPEG_VALUE)
@ResponseBody
public Mono<ResponseEntity<?>> oneRawImage(
    @PathVariable String filename) {
    // tag::try-catch[]
    return imageService.findOneImage(filename)
        .map(resource -> {
            try {
                return ResponseEntity.ok()
                    .contentLength(resource.contentLength())
                    .body(new InputStreamResource(
                        resource.getInputStream()));
            } catch (IOException e) {
                return ResponseEntity.badRequest()
                    .body("Couldn't find " + filename +
                        " => " + e.getMessage());
            }
        });
    // end::try-catch[]
}