文件上传与下载

文件上传     @Test     public void whenUploadSuccess() {         try {             String file = mockMvc.perform(MockMvcRequestBuilders.fileUpload("/file")                     .file(new MockMultipartFile("file", "test.txt",                             "multipart/form-data", "hello upload".getBytes("UTF-8"))))                     .andExpect(MockMvcResultMatchers.status().isOk())                     .andReturn().getResponse().getContentAsString();             log.info("file:{}",file);         } catch (Exception e) {             e.printStackTrace();         }     }

    @PostMapping     public FileInfo upload(MultipartFile file) {         log.info(file.getName());         log.info(file.getOriginalFilename());         log.info(String.valueOf(file.getSize()));         File localFile = new File(folder, new Date().getTime() + ".txt");         try {             file.transferTo(localFile);             return new FileInfo(localFile.getAbsolutePath());         } catch (IOException e) {             e.printStackTrace();             return null;         }

    } 文件下载     @GetMapping("/{id}")     public void download(@PathVariable String id, HttpServletRequest request, HttpServletResponse response) {         try (InputStream ips = new FileInputStream(new File(folder, id + ".txt"));              OutputStream ops = response.getOutputStream();) {             response.setContentType("application/x-download");             response.setHeader("Content-Disposition", "attachment;filename=test.txt");

            IOUtils.copy(ips, ops);             ops.flush();         }catch (IOException e){             e.printStackTrace();         }     }