springboot 文件上传

以你之姓@ 2022-03-17 15:48 277阅读 0赞

Controller对象

String uploadFolder = "/a/b/c";  //文件上传路径
    
    /**
         * 上传文件
         */
        @RequestMapping(value = "/fileUpload", method = RequestMethod.POST)
        public String fileUpload(@RequestParam("file") MultipartFile[] files) {
    
            //文件上传
            if(files == null || files.length != 1){
                return 失败;
            }else{
                MultipartFile file = files[0];
                if (!file.isEmpty()) {
                    String suffix = null;
                    try {
                        suffix = file.getOriginalFilename().substring(file.getOriginalFilename().indexOf(".") + 1);
                    } catch (Exception e) {
                        return 失败;
                    }
                    String path = FileUtils.upLoadMultiFile(file, uploadFolder);
                    if(path == null || "".equals(path)){
                        return "失败";
                    }
    
    				//文件信息
                    Integer.parseInt(String.valueOf(file.getSize()));//文件大小
                    suffix;//文件类型
                    path;//上传路径
                }
            }
    		return 成功;
    
        }

FileUtils工具类

/**
         * 文件上传并保存轨迹
         * @param file
         * @param uploadFolder
         * @return
         */
        public static String upLoadMultiFile(MultipartFile file, String uploadFolder){
            try {
                String suffix = null;
                try {
                    suffix = file.getOriginalFilename().substring(file.getOriginalFilename().indexOf(".") + 1);
                } catch (Exception e) {
                    return null;
                }
    
                String fileName = UUID.randomUUID().toString().replaceAll("-", "") + "." + suffix;
                String upload = uploadFolder+File.separator + DateUtil.formatDate(new Date(),"yyyyMMdd")+ File.separator + fileName;
    
                File dest = new File(uploadFolder+File.separator + DateUtil.formatDate(new Date(),"yyyyMMdd")+ File.separator + fileName);
                // 检测是否存在目录
                if (!dest.getParentFile().exists()) {
                    System.out.println("目标文件所在目录不存在，准备创建。。。。");
                    if(!dest.getParentFile().mkdirs()) {
                        System.out.println("上传文件失败,创建目标文件所在目录失败！");
                        return null;
                    }
                    dest.getParentFile().mkdirs();
                }
                BufferedOutputStream out = null;
                try {
                    out = new BufferedOutputStream(new FileOutputStream(dest));
                    out.write(file.getBytes());
                    out.flush();
                }catch (Exception e){
                    e.printStackTrace();
                    return null;
                }finally {
                    if(out != null){
                        out.close();
                    }
                }
    
                return upload;
            } catch (IOException e) {
                e.printStackTrace();
                return null;
            }
        }