feign調用文件下載服務

cloud-product生產者發布的接口，將文件內容寫入HttpServletResponse中

@GetMapping(value = "/file")
    public void downloadFile(@RequestParam String path, HttpServletResponse response) {
    }

cloud-consumer消費者聲明feign接口，在controller中測試下載文件

@Component
@FeignClient(contextId = "file", value = "cloud-provider", fallback = RemoteFileBackFactory.class)
public interface FileDownloadService {
    @GetMapping(value = "/product/file", consumes = MediaType.APPLICATION_PROBLEM_JSON_VALUE)
    Response downloadFile(@RequestParam String path);
}

@GetMapping(value = "/file")
    public void downloadFile(@RequestParam String path, HttpServletResponse response) {
        InputStream inputStream = null;
        try {
            Response serviceResponse = this.fileDownloadService.downloadFile(path);
            Response.Body body = serviceResponse.body();
            inputStream = body.asInputStream();
            BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
            response.setHeader("Content-Disposition", serviceResponse.headers().get("Content-Disposition").toString().replace("[","").replace("]",""));
            BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(response.getOutputStream());
            int length = 0;
            byte[] temp = new byte[1024 * 10];
            while ((length = bufferedInputStream.read(temp)) != -1) {
                bufferedOutputStream.write(temp, 0, length);
            }
            bufferedOutputStream.flush();
            bufferedOutputStream.close();
            bufferedInputStream.close();
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }