通过httpResponse spring boot下载Java文件

@RestController
public class FileDownloadController {

    @GetMapping("/download")
    public void downloadFile(HttpServletResponse response) throws IOException {
        // 设置文件名和文件类型
        String fileName = "example.java";
        String contentType = "text/plain";

        // 设置响应头
        response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
        response.setContentType(contentType);

        // 读取文件内容并写入响应流
        File file = new File("path/to/example.java");
        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();
        outputStream.close();
        inputStream.close();
    }
}