SpringBoot 多文件上传

参考   https://blog.csdn.net/msdengxw/article/details/80913673

控制层

 @RequestMapping("/admin/toSaveMaterial")
    @ResponseBody
    public ResultInfo saveMaterial(Article article, MultipartHttpServletRequest request)
            throws IOException{
          return materialService.saveMaterial(article,request);
          }

实现层

public ResultInfo<Article> saveMaterial(Article article, MultipartHttpServletRequest request)
            throws IOException {
//        System.out.println("材料的文章是：： "+article.getContent());
        ResultInfo resultInfo = new ResultInfo();
        try {
            if (article.getReleaseTime() == null) {
                article.setReleaseTime(new Date());
            }
            article.setId(UUIDUtils.getUUID());
            article.setUpdateTime(new Date());
            articleDao.saveAndFlush(article);
//            ArticleState.id++;
            Iterator<String> fileNames = request.getFileNames();
            while (fileNames.hasNext()) {
                //request.getFiles(fileName)方法即通过fileName这个Key, 得到对应的文件
                //集合列表. 只是在这个Map中, 文件被包装成MultipartFile类型
                String fileName = fileNames.next();
                System.out.println(fileName);
                List<MultipartFile> files = request.getFiles(fileName);
                if (files.size()> 0) {
                    for (MultipartFile multipartFile : files) {
                        Material resource = new Material();
                        //获得文件原本的名字
                        String originalFilename = multipartFile.getOriginalFilename();
                        //获得原本文件类型(eg:.doc)
                        String type = originalFilename.substring(originalFilename.lastIndexOf("."));
                        String newName = UUID.randomUUID().toString() + type;
                        //获取真实路径
                        File path=new File(ResourceUtils.getURL("classpath:").getPath());
                        File upload=new File(path.getAbsolutePath(),"static/successImage/content/");
                        if (!upload.exists()){
                            upload.mkdirs();
                        }
                        String uploadPath = upload + "\\";
                        File file = new File(uploadPath + newName);
                        System.out.println(uploadPath+newName);
                        //将文件写入磁盘
                        multipartFile.transferTo(file);
                        //设置资源url
                        resource.setFilePath("/static/successImage/content/"+newName);
                        //设置资源类型
                        resource.setMaterialType(type.substring(1));
                        //设置资源所属文章
                        resource.setArticleId(article.getId());
                        resource.setId(UUIDUtils.getUUID());
                        //设置资源名称
                        resource.setMaterialName(originalFilename);
                        materialDao.save(resource);
                        resultInfo.setResultCode(ResultInfo.RESULT_CODE_SUCCESS);
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
            resultInfo.setResultCode(ResultInfo.RESULT_CODE_ERROR);
        }
        return resultInfo;
    }