解释一下这段代码，public Result upload(MultipartFile file,Long id) { try { if(file!=null){ CarParkManage carParkManage = parkManageRepository.findById(id).orElse(new CarParkManage()); if(id==null||carParkManage==null){ return Result.error("请选择停车场"); } File parentFile = CommonUtils.createParentFile(filePath); String fileName = file.getOriginalFilename(); String suffix = fileName.substring(fileName.lastIndexOf(".")); String uuid = IdUtil.simpleUUID(); fileName = uuid + suffix; File imageFile = new File(parentFile,fileName); FileUtil.writeFromStream(file.getInputStream(), imageFile); String fileDay = DateUtil.thisYear()+"/"+(DateUtil.thisMonth()+1)+"/"+DateUtil.thisDayOfMonth(); String imagePath = SystemConstant.FILE + "/" + fileDay+"/"+fileName; String plateNumber = baiDuUtils.plateLicense(imageFile.getAbsolutePath()); if(StringUtils.isBlank(plateNumber)){ return Result.error("识别失败"); } Map<String, Object> map = new HashMap<>(); map.put("plateNumber",plateNumber); map.put("imagePath",imagePath); CarParkingRecord record = carParkingRecordService.getByPlateNumber(plateNumber,id); /** * 出厂 */ if(record!=null){ record.setCost(CostUtils.calculate(record,carParkManage)); record.setGmtOut(DateUtils.getTimestamp()); map.put("msg","出厂成功"); }else{ record = new CarParkingRecord(); record.setOrgId(carParkManage.getOrgId()); record.setOrgName(carParkManage.getOrgName()); record.setParkManageId(carParkManage.getId()); record.setParkManageName(carParkManage.getName()); record.setGmtInto(DateUtils.getTimestamp()); record.setPlateNumber(plateNumber); CarManage carManage = carManageService.getByPlateNumber(plateNumber,id); if(carManage!=null){ record.setType(carManage.getType()); }else{ record.setType(SystemConstant.CAR_TYPE_TEMP); } map.put("msg","进厂成功"); } carParkingRecordService.save(record); return Result.ok(map); }else{ return Result.error(); } } catch (Exception e) { e.printStackTrace(); return Result.error(); } } }

spring boot file upload

public String handleFileUpload(@RequestParam("file") MultipartFile file) { if (!file.isEmpty()) { try { // 保存文件到服务器的逻辑 byte[] bytes = file.getBytes(); // 比如：存储到本地 Path path =...

Angular.js ng-file-upload结合springMVC的使用教程

public void upload(@RequestParam("file") MultipartFile file, @RequestParam("username") String username) throws IOException { if (!file.isEmpty()) { byte[] bytes = file.getBytes(); // store file in...

@RequestMapping("/upload") @ResponseBody public String upload(HttpServletRequest request){ MultipartHttpServletRequest params=((MultipartHttpServletRequest) request); String name = params.getParameter("name"); MultipartFile file = params.getFile("file"); if(name == null || name.length()==0){ return new Result(false,null,"模板名称未填写！").toString(); }else if(file.isEmpty()){ return new Result(false,null,"模板文件未选择！").toString(); } int num = docService.upload(name,file); if(num != 1){ return new Result(false,null,"模板文件上传失败！").toString(); } return new Result(true,null,"模板文件上传成功！").toString(); } @RequestMapping("/update") @ResponseBody public String update(HttpServletRequest request){ MultipartHttpServletRequest params=((MultipartHttpServletRequest) request); Integer userId = Integer.valueOf(params.getParameter("id")); String name = params.getParameter("name"); MultipartFile file = params.getFile("file"); if(name == null || name.length()==0){ return new Result(false,null,"模板名称未填写！").toString(); }else if(file.isEmpty()){ return new Result(false,null,"模板文件未选择！").toString(); } int num = docService.update(userId,name,file); if(num != 1){ return new Result(false,null,"模板文件修改失败！").toString(); } return new Result(true,null,"模板文件修改成功！").toString(); }

这段代码是一个基于Spring MVC框架的文件上传功能实现。其中@RequestMapping("/upload")和@RequestMapping("/update")分别是处理上传和更新请求的方法，返回值为JSON格式的字符串。在上传和更新过程中，通过...

public String upload(@RequestParam("file") MultipartFile file){ //获得文件名字 String fileName=file.getOriginalFilename(); //上传失败提示 String warning=""; String newFileName = FileUtils.upload(file, path, fileName); if(newFileName != null){ //上传成功 warning="上传成功"; }else{ warning="上传失败"; } logger.info("test:{}", warning); return newFileName; }

这是一个文件上传的方法。首先，它从请求参数中获取到一个 MultipartFile 类型的文件对象。然后，通过调用 file.getOriginalFilename() 方法获得文件的原始文件名。接下来，它调用 FileUtils.upload() 方法将文件...

@RequestMapping({"/upload"}) public String fileUpload0(MultipartFile[] files, HttpServletRequest request, HttpSession session) throws IOException { if (files != null && files.length > 0) { int filesTotal = files.length; String savePathRoot = request.getServletContext().getRealPath("/uploadFiles"); for(int i = 0; i < filesTotal; ++i) { FileInfo fileInfo = new FileInfo(); MultipartFile multipartFile = files[i]; if (multipartFile != null) { String originalFilename = multipartFile.getOriginalFilename(); String newFileName = CommonUtil.getNewFileName(originalFilename); String newSubDirectories = CommonUtil.getNewSubDirectoriesBasedOnNewFileName(newFileName); File filePath = new File(savePathRoot, newSubDirectories); if (!filePath.exists()) { filePath.mkdirs(); } multipartFile.transferTo(new File(filePath + "/" + newFileName)); fileInfo.setOriginalFileName(originalFilename); fileInfo.setNewFileName(newFileName); fileInfo.setSize(multipartFile.getSize()); this.fileList.add(fileInfo); } } session.setAttribute("fileList", this.fileList); session.setAttribute("uploadStatus", "OK"); } else { session.setAttribute("uploadStatus", "ERROR"); } return "redirect:toFileList"; }

这段代码使用了Spring MVC的注解 @RequestMapping，它将该方法映射到了"/upload"的URL路径上。该方法接受了三个参数：MultipartFile[] files、HttpServletRequest request和HttpSession session。其中MultipartFile...

public GlobalResult uploadFile1(MultipartFile file, HttpServletRequest request) { if (file == null) { return GlobalResult.errorMsg("文件不能为空！"); } String fileSub = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).toLowerCase();请详细解释每一行代码

- public GlobalResult uploadFile1(MultipartFile file, HttpServletRequest request) {: 这是一个公共方法，返回类型为 GlobalResult，方法名为 uploadFile1，接受两个参数：MultipartFile 类型的 file ...

@RequestMapping(value = "/image.action") //public String upload(@RequestParam(value ="image", required = false) MultipartFile file, HttpServletRequest request, ModelMap model) { public String upload( @RequestParam(value ="image", required = false) MultipartFile file, @RequestParam(value ="image1", required = false) MultipartFile file1, HttpServletRequest request, ModelMap model) { String path = request.getSession().getServletContext().getRealPath("/") + "upfiles/"; // 判断第一张图片是否为空 if (file == null) { throw new NullPointerException("第一张图片不能为空！"); } String fileName = file.getOriginalFilename(); int i = fileName.lastIndexOf("."); String name = String.valueOf(VeDate.getStringDatex()); String type = fileName.substring(i + 1); fileName = name + "." + type; File targetFile = new File(path, fileName); if (!targetFile.exists()) { targetFile.mkdirs(); } // 保存 try { file.transferTo(targetFile); } catch (Exception e) { e.printStackTrace(); } // 保存第二张图片 // 判断第二张图片是否为空 if (file1 != null && !file1.isEmpty()) { String fileName1 = file1.getOriginalFilename(); int j = fileName1.lastIndexOf("."); String name1 = String.valueOf(VeDate.getStringDatex()); String type1 = fileName1.substring(j + 1); fileName1 = name1 + "." + type1; File targetFile1 = new File(path, fileName1); if (!targetFile1.exists()) { targetFile1.mkdirs(); } try { file1.transferTo(targetFile1); } catch (Exception e) { e.printStackTrace(); } model.addAttribute("image1FileName", fileName1); } model.addAttribute("imageFileName", fileName); return "page/saveimage"; }上传第二张图片时会覆盖第一张图片文本框，该如何改写代码

public String upload(@RequestParam(value ="image", required = false) MultipartFile file, @RequestParam(value ="image1", required = false) MultipartFile file1, HttpServletRequest request, ModelMap ...

逐行解释代码@RequestMapping("/uploadExcel") public String uploadExcel(@RequestParam("file") MultipartFile file, ModelMap map) { String name = file.getOriginalFilename(); if(!name.substring(name.length() - 5).equals(".xlsx")) { map.put("msg", "文件格式错误"); } List<Leimu> list; try { list=ExcelImportUtils.excelToFoodLeimuList(file.getInputStream()); log.info("excel导入的list={}", list); if (list == null || list.size() <= 0) {...}

这段代码是一个SpringMVC框架的后台接口，用于上传Excel文件并将文件中的数据转换为List类型，其中Leimu是一个Java Bean类。@RequestMapping("/uploadExcel")表示该接口的访问路径为/uploadExcel。@RequestParam(...

public Result uploadFiles(MultipartFile file) {安全漏洞

public Result uploadFiles(MultipartFile file) 这段代码描述的是一个RESTful API接口，用于接收用户上传的文件（MultipartFile是一个Spring MVC中的模型，通常代表HTTP请求中的multipart/form-data类型的文件）...

@PostMapping("/image") public AjaxResult upload(@RequestParam("file") MultipartFile multipartFile) { if (multipartFile==null){ return AjaxResult.error("null"); } //获取文件名称 String originalFilename = multipartFile.getOriginalFilename(); //截取文件名 String s = StringUtils.substringAfter(originalFilename, "."); //获取获取返回的url String upload = OssUtil.upload(ossConfig, multipartFile); if(upload==null){ AjaxResult.error("403","上传出错"); } // 设置URL过期时间为5年 3600l* 10002436510 Date expiration = new Date(System.currentTimeMillis()+ 3600L 1000 * 24 * 365*5); // 生成URL URL url = ossClient.generatePresignedUrl(ossConfig.getBucketName(), upload, expiration); //去除URL的参数这个私有获取不到 String tmp = url.toString().split("\\?")[0]; int index = tmp.lastIndexOf("/") + 1; return AjaxResult.success("200",url); }

这是一个Java的SpringBoot的后端接口，用于上传图片并返回图片的URL。首先判断上传的文件是否为空，然后获取文件名并截取后缀名。接着调用OssUtil的upload方法上传文件并获取返回的URL。如果上传出错则返回错误信息...

给下面代码添加注释：public Document breakpointUpload(@RequestPart("file") MultipartFile file, @RequestParam("chunkNumber") Integer chunkNumber, @RequestParam("totalChunks") Integer totalChunks, @RequestParam("identifier") String identifier, @RequestParam(name = "documentId",required = false) String documentId, @RequestParam(name = "folderId") String folderId, @RequestParam(name = "versionId",required = false) String versionId) { if (StringUtils.isBlank(folderId)) { throw new BimdcException(HttpStatus.BAD_REQUEST.value(), "folderId不能为空"); } else { String fileName = file.getOriginalFilename(); fileName = fileName.substring(0, fileName.lastIndexOf(".")); if (fileName.length() > this.maxFileNameLength) { throw new BimdcException(400, "【" + fileName + "】文件长度为：" + fileName.length() + "字符，已超过" + this.maxFileNameLength + "字符长度！"); } else { try { log.info("DocumentServiceImpl breakpointUpload, upfile=[{}], chunkNumber=[{}], totalChunks=[{}], identifier=[{}], documentId=[{}], folderId=[{}], versionId=[{}]", new Object[]{file.getOriginalFilename(), chunkNumber, totalChunks, identifier, documentId, folderId, versionId}); double checkFileSize = (double)file.getSize() / 1048576.0; if (checkFileSize > this.maxbreakpointUploadFileSize) { throw new BimdcException(file.getOriginalFilename() + "文件大小不能超过" + this.maxbreakpointUploadFileSize + "M！"); } else { Map<String, Object> params = new HashMap(9); params.put("chunkNumber", chunkNumber); params.put("totalChunks", totalChunks); params.put("identifier", identifier); if (null != documentId) { params.put("documentId", documentId); } if (null != folderId) { params.put("folderId", folderId); } if (null != versionId) { params.put("versionId", versionId); } String url = this.serviceUrl + "document/v1/document/document/uploadResume"; String result = this.httpMultipartFormdata.postMultipartFile(url, params, file, "upfile"); log.info("upload result = [{}]", result); Document document = new Document(); if (result.contains("code")) { JSONObject jsonObject = JSONObject.fromObject(result); if ("0".equals(jsonObject.get("code"))) { jsonObject = JSONObject.fromObject(JSONObject.fromObject(result).get("data")); document.setDocumentId(jsonObject.getString("pathMd5")); document.setFileId(jsonObject.getString("id")); document.setVersionNo(Integer.parseInt(jsonObject.getString("updateNo"))); } } return document;

public Document breakpointUpload(@RequestPart("file") MultipartFile file, @RequestParam("chunkNumber") Integer chunkNumber, @RequestParam("totalChunks") Integer totalChunks, @RequestParam(...

@Override public MessageData importExcel(MultipartFile file, Integer carId){ try { String fileName = file.getOriginalFilename(); ImportParams params = new ImportParams(); //设置表头和标题所占行数 params.setHeadRows(1); // params.setTitleRows(1); //使用importExcel导入文件 List<CreateTOfficialCarStopWashCostImportReq> fileList = ExcelImportUtil.importExcel(file.getInputStream(), CreateTOfficialCarStopWashCostImportReq.class, params); ArrayList<TOfficialCarStopWashCost> list = new ArrayList<>(); for (CreateTOfficialCarStopWashCostImportReq item : fileList) { list.add(item.toEntity()); } //判断excel是否为空 if (list.isEmpty()) { return MessageData.buildFailed("excel为空！"); } for (TOfficialCarStopWashCost item : list) { if(carId==null){ CarInfo carInfo = carInfoMapper.queryByPlateNumber(item.getLicensePlate()); if(carInfo!=null){ item.setCarId(carInfo.getId()); } }else{ item.setCarId(carId); } item.setCreateTime(new Date()); item.setCreateUserId(ShiroUtil.getUserId()); MessageData save = this.save(item); } return MessageData.buildSuccess(); }catch (Exception e) { return MessageData.buildFailed("导入出错了!"); } } 翻译代码

这是一个Java代码，其中定义了一个名为 "importExcel" 的方法，它接受两个参数：一个名为 "file" 的MultipartFile类型的文件和一个名为 "carId" 的Integer类型的汽车ID。该方法的主要功能是从Excel文件中读取数据，...

翻译下面的代码 @Override public MessageData importExcel(MultipartFile file, Integer carId){ try { String fileName = file.getOriginalFilename(); ImportParams params = new ImportParams(); //设置表头和标题所占行数 params.setHeadRows(1); // params.setTitleRows(1); //使用importExcel导入文件 List<CreateTOfficialCarStopWashCostImportReq> fileList = ExcelImportUtil.importExcel(file.getInputStream(), CreateTOfficialCarStopWashCostImportReq.class, params); ArrayList<TOfficialCarStopWashCost> list = new ArrayList<>(); for (CreateTOfficialCarStopWashCostImportReq item : fileList) { list.add(item.toEntity()); } //判断excel是否为空 if (list.isEmpty()) { return MessageData.buildFailed("excel为空！"); } for (TOfficialCarStopWashCost item : list) { if(carId==null){ CarInfo carInfo = carInfoMapper.queryByPlateNumber(item.getLicensePlate()); if(carInfo!=null){ item.setCarId(carInfo.getId()); } }else{ item.setCarId(carId); } item.setCreateTime(new Date()); item.setCreateUserId(ShiroUtil.getUserId()); MessageData save = this.save(item); } return MessageData.buildSuccess(); }catch (Exception e) { return MessageData.buildFailed("导入出错了!"); } }

这是一段Java代码，其中定义了一个名为 "importExcel" 的方法，它接受两个参数：一个名为 "file" 的MultipartFile类型的文件和一个名为 "carId" 的Integer类型的汽车ID。该方法主要用于从Excel文件中读取数据，并将...

@ResponseBody public GlobalResult uploadFile(MultipartFile file, HttpServletRequest request) { if (file == null) { return GlobalResult.errorMsg("文件不能为空！"); } String fileSub = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")).toLowerCase(); //if (".jpg".equals(fileSub) || ".jpeg".equals(fileSub) || ".png".equals(fileSub) || ".gif".equals(fileSub)) {请详细解释每一行代码

这段代码是一个 Spring Boot 控制器（Controller）中的一个方法。该方法使用注解 @ResponseBody 表示返回的结果是一个响应体，而不是跳转到一个页面。方法签名： java public GlobalResult uploadFile...

public Map<String, Object> upload(MultipartFile file, HttpSession session) throws Exception { Map<String, Object> map = new HashMap<String, Object>(); try { if (file != null && !file.isEmpty()) { // 获取上传文件的原始名称 String originalFilename = file.getOriginalFilename(); String ext = originalFilename.substring(originalFilename.lastIndexOf(".")); // 获取项目部署目录根 File uploadFile = new File("/Users/typhoon/Documents/homelessanimal/upload/"); // 如果保存文件的地址不存在，就先创建目录 if (!uploadFile.exists()) { uploadFile.mkdirs(); } String newFilename = new Date().getTime() + "" + UUID.randomUUID() + ext; newFilename = newFilename.replace("-", ""); String url = uploadFile.getPath() + "/" + newFilename; // 文件路径url System.out.println(url); try { // 使用MultipartFile接口的方法完成文件上传到指定位置 file.transferTo(new File(url)); } catch (Exception e) { e.printStackTrace(); } map.put("code", 0); map.put("msg", "上传成功"); map.put("data", "/upload/" + newFilename); } else { map.put("code", 1); map.put("msg", "上传失败"); } } catch (Exception e) { e.printStackTrace(); map.put("code", 1); map.put("msg", "上传失败"); } return map;

这段代码是一个文件上传的方法，使用了Spring框架的MultipartFile接口。首先判断上传的文件是否为空，如果不为空，获取原始文件名和文件后缀，然后在指定目录创建一个新的文件名，将文件上传到该位置并返回文件的...

逐行解释代码@GetMapping("/list") public String list(HttpServletRequest req, ModelMap map) { List<Leimu> leimuList = repository.findAll(); log.error("类型list={}", leimuList); map.put("leimuList", leimuList); } //excel导入 @RequestMapping("/uploadExcel") public String uploadExcel(@RequestParam("file") MultipartFile file, ModelMap map) { String name = file.getOriginalFilename(); if(!name.substring(name.length() - 5).equals(".xlsx")) { map.put("msg", "文件格式错误"); } List<Leimu> list; try { list=ExcelImportUtils.excelToFoodLeimuList(file.getInputStream()); log.info("excel导入的list={}", list); if (list == null || list.size() <= 0) {...}springboot框架

这段代码是一个基于Spring Boot框架的Java Web应用程序中的控制器类中的两个方法。第一个方法的功能是处理HTTP GET请求，其中@GetMapping注解的参数"/list"表示这个方法处理的请求的URL路径是"/list"。这个方法的...

public R upload(MultipartFile file)

public R upload(@RequestParam("file") MultipartFile file) { // 检查文件是否为空 if (file.isEmpty()) { return R.error("文件不能为空"); } // 保存文件到服务器或第三方接口 try { // 将文件写入临时...

在这段代码里面加一个本地如果没有这个文件夹的话就生成这个文件夹@Controller public class UploadController { @RequestMapping("/upload") public String toUpload(){ return "upload_tu"; } //文件上传 @PostMapping("/upload") public String upload(@RequestPart("headerImg") MultipartFile headerImg, @RequestPart("photos") MultipartFile[] photos, Model model) { try { if (!headerImg.isEmpty()) { String filename = headerImg.getOriginalFilename(); headerImg.transferTo(new File("E://file//" + filename)); } if(photos.length>0){ for(MultipartFile photo:photos){ if(!photo.isEmpty()){ String filename =photo.getOriginalFilename(); photo.transferTo(new File("E://file//" + filename)); } } } model.addAttribute("msg","上传成功!"); } catch (IOException e) { model.addAttribute("msg","上传失败"); } return "upload_tu"; } }

public String upload(@RequestPart("headerImg") MultipartFile headerImg, @RequestPart("photos") MultipartFile[] photos, Model model) { try { //检查文件夹是否存在，不存在则创建 File file = new ...

public CommonResult userUpdate2(@RequestBody User user , @RequestParam MultipartFile avatarFile) { String uploadFileName = null; if(avatarFile != null){ uploadFileName = avatarFile.getOriginalFilename(); } // 条件成立：表示添加用户同时上传了头像的图片，获取图片信息并将其存储到后端指定的路径 if (StrUtil.isNotBlank(uploadFileName)) { // 对上传文件进行重命名，系统当前毫秒数作为文件前缀，后缀不变 // 获取前端上传文件的后缀 int index = StrUtil.indexOf(uploadFileName, '.'); String suffix = uploadFileName.substring(index); // 系统当前毫秒数作为上传文件的前缀 long prefix = System.currentTimeMillis(); uploadFileName = prefix + suffix; // 创建父路径 // File parentPath = new File(fileUploadPath+"/images/avatar/"); File parentPath = new File(fileUploadPath); // 条件成立：表示路径不存在，将其创建 if (!parentPath.exists()) { parentPath.mkdirs(); } File fullPath = new File(parentPath, uploadFileName); try { avatarFile.transferTo(fullPath); } catch (IOException e) { e.printStackTrace(); return new CommonResult(401,"上传头像出现故障，添加用户头像失败",false); } user.setHeadImgSrc("/images/avatar/" + uploadFileName); } return iUserService.userUpdate(user) ? CommonResult.success(true):CommonResult.fail(false); }

根据您提供的代码片段，出现"org.springframework.web.multipart.MultipartException: Current request is not a multipart request"异常的原因是当前请求不是一个多部分请求。在您的代码中，您使用了@RequestParam...

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