上传压缩文件保存到项目，更改压缩文件的名保存数据库-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_49591538/article/details/126544911

这篇博客介绍了如何在Java开发中处理文件上传，特别是压缩文件的上传。在Controller层，博主详细讲解了接收并保存压缩文件的步骤。然后在ServiceImpl业务层，讨论了如何对上传的压缩文件进行重命名并将其信息存储到数据库中。

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一 Controller层

  /**
     * 新增数据
     */
    @PostMapping
    @ApiOperation("新增数据")
    public RequestDataDTO<Object> add(@ModelAttribute SoftwareVersionManagementDTO versionManagementDTO) {
        return RequestDataDTO.buildSuccess(this.softwareVersionManagementService.insert(versionManagementDTO));
    }

二ServiceImol业务层

 /**
     * 新增数据
     * @param softwareVersionManagementDTO
     * @return
     */
    @Override
    public SoftwareVersionManagementDTO insert(SoftwareVersionManagementDTO softwareVersionManagementDTO) {
        if(StringUtils.isEmpty(softwareVersionManagementDTO.getVersionNumber())){
               throw new RuntimeException("请输入版本号");
        }
        if(StringUtils.isEmpty(softwareVersionManagementDTO.getVersionDescription())){
            throw new RuntimeException("请输入版本描述");
        }
        LambdaQueryWrapper<SoftwareVersionManagementEntity> query = new LambdaQueryWrapper<>();
        query.eq(SoftwareVersionManagementEntity::getVersionNumber,softwareVersionManagementDTO.getVersionNumber());
        Integer num = softwareVersionManagementMapper.selectCount(query);
        if(num>0){
            throw new RuntimeException("版本号不能重复");
        }
        MultipartFile file = softwareVersionManagementDTO.getFile();
        if(file==null || file.isEmpty()){
                throw new RuntimeException("文件为空，或者文件内容为空");
        }
        String originalFilename = file.getOriginalFilename();
        String[] names = originalFilename.split("\\.");
        if (!names[names.length - 1].equals("zip")) {
            throw new RuntimeException("文件格式错误，请重新上传！");
        }
        String newFileName=softwareVersionManagementDTO.getVersionNumber()+"zip";//新文件名
        try{
            //复制文件
            File targetFile = new File("./file",newFileName);
            FileUtils.writeByteArrayToFile(targetFile,file.getBytes());
        }catch(IOException e){
          e.printStackTrace();
        }
        softwareVersionManagementDTO.setCreateDate(System.currentTimeMillis());
        softwareVersionManagementDTO.setDeleted(0);
        softwareVersionManagementDTO.setFileName(newFileName);
        SoftwareVersionManagementEntity softwareVersionManagementEntity = new SoftwareVersionManagementEntity();
        BeanUtils.copyProperties(softwareVersionManagementDTO,softwareVersionManagementEntity);
        int count = softwareVersionManagementMapper.insert(softwareVersionManagementEntity);
        System.out.println(count);
        softwareVersionManagementDTO.setFile(null);//把文件设置为空返回
        return softwareVersionManagementDTO;
    }