@RestController
@RequestMapping("/file")
@Slf4j
public class FileController {

//    @Value("")
//    String folder = System.getProperty("user.dir")+File.separator+"upload"+File.separator;
    /**
     * 在配置文件中配置的文件保存路径
     */
    @Value("${img.location}")
    private String folder;

    @PostMapping
    public FileInfo upload(HttpServletRequest request, @RequestParam(value = "editormd-image-file", required = false) MultipartFile file) throws Exception {
        log.info("【FileController】 fileName={},fileOrginNmae={},fileSize={}", file.getName(), file.getOriginalFilename(), file.getSize());
        log.info(request.getContextPath());
        String fileName = file.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf(".") + 1);
        String newFileName = new Date().getTime() + "." + suffix;

        File localFile = new File(folder, newFileName);
        file.transferTo(localFile);
        log.info(localFile.getAbsolutePath());
        return new FileInfo(1, "上传成功", request.getRequestURL().substring(0,request.getRequestURL().lastIndexOf("/"))+"/upload/"+newFileName);
    }

    @GetMapping("/{id}")
    public void downLoad(@PathVariable String id, HttpServletRequest request, HttpServletResponse response) {
        try (InputStream inputStream = new FileInputStream(new File(folder, id + ".txt"));
             OutputStream outputStream = response.getOutputStream();) {
            response.setContentType("application/x-download");
            response.setHeader("Content-Disposition", "attachment;filename=test.txt");

            IOUtils.copy(inputStream, outputStream);
            outputStream.flush();
        } catch (Exception e) {

        }
    }
}