文件下载，文件下载名乱码

文件下载名乱码

String filename = new String(attachment.getAttachName().getBytes("gbk"), "iso8859-1");  

文件下载

@GetMapping("/files/{id}")
    @ResponseBody
    public ResponseEntity<Resource> serveFile(@PathVariable String id,HttpServletRequest request) throws UnsupportedEncodingException{
    	  
    	Attachment attachment = storageService.loadWithResourceById(id);
    	Resource file = attachment.getResource();
    	String filename = new String(attachment.getAttachName().getBytes("gbk"), "iso8859-1");  
//    	Path path = Paths.get("D:\\upload-dir\\20170516\\test.txt");
//    	Resource file = new UrlResource(path.toUri());
    	return ResponseEntity
                .ok()
                .header(HttpHeaders.CONTENT_TYPE,"octets/stream")
                .header(HttpHeaders.ACCEPT_CHARSET, "utf-8")
                .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\""+filename+"\"")
                .body(file);
    }