上传文件

<!--hutool 常用工具-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.4.1</version>
        </dependency>
        <!--start poi-->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>4.1.2</version>
        </dependency>
        <!-- 导入导出Excel时用到 -->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>4.1.2</version>
        </dependency>
        <!--end poi-->

@Resource
    private HttpServletRequest request;

@ApiOperationSupport(author = "wensm")
    @ApiOperation(value = "上传logo")
    @PostMapping(value = "/uploadLogo")
    public ObjectRestResponse<String> uploadLogo(@RequestParam("file") MultipartFile file) throws IOException {
        log.info("上传logo");
        if (file.isEmpty()) {
            log.warn("上传失败，请选择文件");
            throw new ErpException(ErrorMessagesEnum.ERR_UPLOAD_FAILED);
        }
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");//17位
        String dateTime_str = LocalDateTime.now().format(formatter);
        String uri = request.getRequestURI();
        String rootPath = System.getProperty("user.dir");//E:IdeaProjectsyq
        String fileName = file.getOriginalFilename();
                //获取最后一个.的位置
        int lastIndexOf = fileName.lastIndexOf(".");
        //获取文件的后缀名 .jpg
        String suffix = fileName.substring(lastIndexOf);
//        String filePath = "/Users/itinypocket/workspace/temp/";
        String filePath = rootPath+Constants.UPLOAD_DIR+uri+"/"+dateTime_str+suffix;
        File dest = new File(filePath);
        if (!dest.exists()) {
            dest.mkdirs();
        }
        try {
            file.transferTo(dest);
            log.info("上传成功");
            return new ObjectRestResponse<String>().rel(true).data(filePath.replace("\","/"));
        } catch (IOException e) {
            log.error(e.toString(), e);
        }
        return new ObjectRestResponse<String>().rel(true);
    }

@RequestMapping("xxx")
public String fileImgSave(@RequestParam("filename") MultipartFile[] files,HttpServletRequest request){
//保存文件的路径
String realPath = request.getSession().getServletContext().getRealPath("/imgssss");
File path = new File(realPath);
if(!path.exists()){
 path.mkdirs();
}
       //判断file数组不能为空并且长度大于0
       if(files != null && files.length > 0){
         //循环获取file数组中得文件
         for(int i = 0;i < files.length;i++){
           MultipartFile file = files[i];
           //保存文件
           if (!file.isEmpty()){
            try {
              //转存文件 file.getOriginalFilename();文件原名称包括后缀名
              file.transferTo(new File(realPath+"/img"+i+".png"));
            } catch (IOException e) {
              e.printStackTrace();
            }
          }
         }
       }
 
return "ok";
}