如何从java的响应中下载angular文件？

@RestController
public class FileDownloadController {

    @GetMapping("/download")
    public void downloadFile(HttpServletResponse response) {
        String filePath = "/path/to/angular/file"; // 替换为实际的文件路径

        File file = new File(filePath);
        if (file.exists()) {
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition", "attachment; filename=" + file.getName());

            try (InputStream inputStream = new FileInputStream(file);
                 OutputStream outputStream = response.getOutputStream()) {
                byte[] buffer = new byte[1024];
                int bytesRead;
                while ((bytesRead = inputStream.read(buffer)) != -1) {
                    outputStream.write(buffer, 0, bytesRead);
                }
                outputStream.flush();
            } catch (IOException e) {
                // 处理异常
            }
        } else {
            // 文件不存在的处理逻辑
        }
    }
}