java文件上传 java文件上传

【java文件上传】多文件上传

// 创建目录 SimpleDateFormat sft = new SimpleDateFormat("/yyyy/MM/dd/"); @PostMapping("/uploadsFd") //接收formData提交 public String uploadsFd(HttpServletRequest req, HttpServletResponse rsq, @RequestParam(required = false, value = "https://www.it610.com/article/files") MultipartFile[] files, @RequestParam(required = false, value = "https://www.it610.com/article/remark") String remark) { System.out.println("remark = " + remark); realPath = req.getServletContext().getRealPath("/img") + format; return upLoadedUrls(req, files, realPath); }private String upLoadedUrls(HttpServletRequest req, @RequestParam(required = false, value = "https://www.it610.com/article/files") MultipartFile[] files, String realPath) { String reUrl = ""; List urls = new ArrayList<>(); File folder = new File(realPath); if (!folder.exists()) { folder.mkdirs(); } for (MultipartFile file : files) { String oldName = file.getOriginalFilename(); String newName = UUID.randomUUID().toString() + oldName.substring(oldName.lastIndexOf(".")); try { file.transferTo(new File(folder, newName)); String url = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort() + "/img" + format + newName; System.out.println("url = " + url); urls.add(url); } catch (IOException e) { e.printStackTrace(); } } return String.join(",",urls); }

单文件上传

@PostMapping("/upload") public String upload(MultipartFile file, HttpServletRequest req) { String format = sft.format(new Date()); // 创建真实路径 String realPath = req.getServletContext().getRealPath("/img") + format; File folder = new File(realPath); // 创建目录s if (!folder.exists()) { folder.mkdirs(); } String oldName = file.getOriginalFilename(); // 创建文件名 String newName = UUID.randomUUID().toString() + oldName.substring(oldName.lastIndexOf(".")); try { // 保存文件 file.transferTo(new File(folder, newName)); String url = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort() + "/img" + format + newName; return url; } catch (IOException e) { e.printStackTrace(); } return ""; }