下载代码
@RequestMapping(value="/download",method=RequestMethod.GET)
public ResponseEntity<byte[]> download(HttpServletRequest request, @RequestParam("filename") String filename,
                                       Model model) throws IOException{

    String downloadFilePath="D:\\upload";

    File file = new File(downloadFilePath+File.separator+filename);

    HttpHeaders headers = new HttpHeaders();//http头信息

    String downloadFileName = new String(filename.getBytes("UTF-8"),"iso-8859-1");//设置编码

    //设置附件名字
    headers.setContentDispositionFormData("attachment", downloadFileName);
    //设置传输数据类型
    headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);


    return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),headers, HttpStatus.CREATED);

下载代码
@RequestMapping(value="/download",method=RequestMethod.GET)
public ResponseEntity<byte[]> download(HttpServletRequest request, @RequestParam("filename") String filename,
                                       Model model) throws IOException{

    String downloadFilePath="D:\\upload";

    File file = new File(downloadFilePath+File.separator+filename);

    HttpHeaders headers = new HttpHeaders();//http头信息

    String downloadFileName = new String(filename.getBytes("UTF-8"),"iso-8859-1");//设置编码

    //设置附件名字
    headers.setContentDispositionFormData("attachment", downloadFileName);
    //设置传输数据类型
    headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);


    return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),headers, HttpStatus.CREATED);