由于项目中要用到文件上传,将文件上传到指定的目录中,并且生成网络地址,以供之后通过网络地址进行请求查看
支持多文件上传
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd/"); /** * 上传文件 * @param uploadFiles * @param request * @return */ @ApiOperation(value = "文件上传", notes = "文件上传") @DataSource(name = DataSourceNames.MASTER) @PostMapping("/uploads") public String upload(MultipartFile[] uploadFiles, HttpServletRequest request, @RequestParam(name = "dataId", required = false) Integer dataId, @RequestParam(name = "lx", required = false) String lx, @RequestParam(name = "ly", required = false) String ly ) { List list = new ArrayList();//存储生成的访问路径 if (uploadFiles.length > 0) { for (int i = 0; i < uploadFiles.length; i++) { MultipartFile uploadFile = uploadFiles[i]; //设置上传文件的位置在该项目目录下的uploadFile文件夹下,并根据上传的文件日期,进行分类保存 // String realPath = request.getSession().getServletContext().getRealPath("uploadFile"); // realPath = "192.168.20.4:90"; String format = sdf.format(new Date()); File folder = new File("E:\\dist\\uploadFile" + format); // 这里的dist就是前端部署时使用的dist文件夹 format是利用时间格式创建的文件夹 if (!folder.isDirectory()) { folder.mkdirs(); } String oldName = uploadFile.getOriginalFilename(); System.out.println("oldName = " + oldName); String newName = UUID.randomUUID().toString() + oldName. substring(oldName.lastIndexOf("."), oldName.length()); System.out.println("newName = " + newName); try { //保存文件 uploadFile.transferTo(new File(folder, newName)); //生成上传文件的访问路径 String filePath = request.getScheme() + "://" + request.getServerName() + ":"+ request.getServerPort() + "/uploadFile" + format + newName; list.add(filePath); } catch (IOException e) { e.printStackTrace(); } } //根据条件查询,对应的类型,对应的字段是以及存在对应的文件 QueryWrapper<UploadFiles> queryWrapper = new QueryWrapper<>(); queryWrapper.lambda().eq(UploadFiles::getDataId,dataId) .eq(UploadFiles::getLx,lx) .eq(UploadFiles::getLy,ly) .orderByDesc(UploadFiles::getCreateTime); List<UploadFiles> list1 = uploadFilesService.list(queryWrapper); UploadFiles uploadFile = new UploadFiles(); //如果存在,即更新对应的文件地址,不存在则根据传入值新增文件记录 if (list1.size() > 0) { uploadFile = list1.get(0); uploadFile.setUrl(list.toString()); }else { uploadFile.setCreateTime(new Date()); uploadFile.setDataId(dataId); uploadFile.setLx(lx); uploadFile.setLy(ly); uploadFile.setUrl(list.toString()); } uploadFilesService.saveOrUpdate(uploadFile); return list.toString(); } else if (uploadFiles.length == 0) { return "请选择文件"; } return "上传失败"; }
参考文档:https://blog.csdn.net/Shu2018ai/article/details/97623776