使用Feign实现微服务间文件下载

@RequestMapping(value = "/downloadFile",method = RequestMethod.GET,consumes = MediaType.APPLICATION_JSON_UTF8_VALUE) public void downloadFile(HttpServletResponse response){  String filePath = "D://1.txt";  File file = new File(filePath);  InputStream in = null;  if(file.exists()){  try {   OutputStream out = response.getOutputStream();   in = new FileInputStream(file);   byte buffer[] = new byte[1024];   int length = 0;   while ((length = in.read(buffer)) >= 0){   out.write(buffer,0,length);   }  } catch (IOException e) {   e.printStackTrace();  } finally {   if(in != null){   try {    in.close();   } catch (IOException e) {    e.printStackTrace();   }   }  }  } }

@RequestMapping(value = "/downloadFile",method = RequestMethod.GET,consumes = MediaType.APPLICATION_JSON_UTF8_VALUE) Response downloadFile();

@RequestMapping(value = "/download",method = RequestMethod.GET) public ResponseEntity<byte[]> downFile(){ ResponseEntity<byte[]> result=null ; InputStream inputStream = null; try {  // feign文件下载  Response response = uploadService.downloadFile();  Response.Body body = response.body();  inputStream = body.asInputStream();  byte[] b = new byte[inputStream.available()];  inputStream.read(b);  HttpHeaders heads = new HttpHeaders();  heads.add(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=123.txt");  heads.add(HttpHeaders.CONTENT_TYPE,MediaType.APPLICATION_JSON_VALUE);  result = new ResponseEntity <byte[]>(b,heads, HttpStatus.OK); } catch (IOException e) {  e.printStackTrace(); } finally {  if(inputStream != null){  try {   inputStream.close();  } catch (IOException e) {   e.printStackTrace();  }  } } return result;}