SpringMvc多文件上传简单实现

public ResponseItem uploadFile(MultipartHttpServletRequest request,FileItem fileItem,PageData pd) {
    ResponseItem responseItem=new ResponseItem();
    try {
    boolean isSuccess = false;
    MultiValueMap<String,MultipartFile> multiMap = request.getMultiFileMap();
    String relativePath = CreateDateDirUtil.create(Const.UPLOADPATH+"/upload");//保存文件夹
    Set<String> keys = multiMap.keySet();//遍历文件
    isSuccess=true;
    if(isSuccess){
        FileItem uploadfile = new FileItem();
        for (String key:keys) {
            List<MultipartFile> mutiFiles = multiMap.get(key);
            for(MultipartFile file :mutiFiles){
                String uuid= UuidUtil.get32UUID();
                String suffix = file.getOriginalFilename().substring(file.getOriginalFilename().indexOf("."));//获取文件类型
                uploadfile.setProc(fileItem.getProc());//设置流程实例ID
                uploadfile.setFileTempname(uuid+suffix);//设置数据库文件存储名,32位
                uploadfile.setNames(fileItem.getNames());//设置上传者姓名
                uploadfile.setUserid(fileItem.getUserid());//设置上传者id
                logger.debug("==>"+suffix);
                String fileName = URLDecoder.decode(file.getOriginalFilename());

                logger.debug("上传附件名==>"+fileName);
                uploadfile.setFilename(fileName);//上传附件名
                uploadfile.setFilepath("upload/"+relativePath);
                String type=fileItem.getType();
                if(type.equals("blfj")){
                    fileItem.setType("办理附件");
                }
                if(type.equals("jxfj")){
                    fileItem.setType("结项附件");
                }
                if(type.equals("xcfj")){
                    fileItem.setType("巡查附件");
                }
                uploadfile.setType("办理附件");
                uploadfile.setTime(new Date());//上传时间
                logger.debug("==>"+Const.UPLOADPATH+"/"+relativePath+uuid+suffix);
                file.transferTo(new File(Const.UPLOADPATH+"/upload/"+relativePath,uuid+suffix));//写入文件,文件名通过UUID生产
                /** 插入媒体文件 */
                isSuccess = workflowDao.insertWorkflowUploadFile(uploadfile);
            }
        }
        if(isSuccess){

            return responseItem.getSuccessInfo(isSuccess);
        }else{
            return responseItem.getFailureInfo("false");
        }
    }
    }catch (Exception e){

       e.printStackTrace();
    }

    return responseItem;
}