java - jsp+springMVC实现文件下载的时候后台抛出getOutputStream()异常

使用JSP+springMVC框架做的web平台，在做文件下载的时候，遇到这样的问题：

文件下载部分的代码是这样写的：

@RequestMapping("/ModelDownload{id}")
public String ModelDownLoad(@PathVariable int id, HttpServletResponse response){
    String fileName = "download.txt"; 
    String filePath = "D:\\";
    String modelName = new ModelService().getModelById(id).getModelName();
    System.out.println(modelName);
    response.reset();
    response.setContentType("application/x-download");
    response.addHeader("Content-Disposition", "attachment;filename="+fileName);//重新设置响应头文件字段，设置下载文件的文件名
    OutputStream OutputStream = null;
    FileInputStream fileInputStream = null;
    try {
        OutputStream = response.getOutputStream();
        fileInputStream = new FileInputStream(filePath+fileName);
        byte[] buffer = new byte[1024*10];//设置文件大小上限为10M
        for (int read; (read = fileInputStream.read(buffer)) != -1;){
            OutputStream.write(buffer,0,read);
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        System.out.println(e.toString());
    }
    finally{
        try {
            fileInputStream.close();
            OutputStream.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    return "success";
}

百度了很多，几乎都是说在JSP上使用out对象进行clear()和close()操作的，根本没有针对后台操作遇到的相同问题的解决方案，求大神指导。