在Spring MVC应用程序中下载CSV -文件不会下载。

@RequestMapping(value = "/downloadCSV", method = RequestMethod.GET)
public void downloadCSV(HttpServletResponse response) {
    try {
        // 设置响应头信息
        response.setContentType("text/csv");
        response.setHeader("Content-Disposition", "attachment; filename=filename.csv");

        // 读取CSV文件内容
        FileInputStream fileInputStream = new FileInputStream("path/to/csv/file.csv");
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(fileInputStream, "UTF-8"));

        // 写入响应流
        OutputStream outputStream = response.getOutputStream();
        String line;
        while ((line = bufferedReader.readLine()) != null) {
            outputStream.write(line.getBytes("UTF-8"));
            outputStream.write("\n".getBytes("UTF-8"));
        }

        // 关闭流
        bufferedReader.close();
        outputStream.flush();
        outputStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}