1，前台肯定是搭配multipart/form-data springMvc这个组件上传滴。

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2，后台代码 参考就行了我这里用了SFTP上传文件到云服务器，文件上传工具参考我的其中一篇博客

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https://blog.csdn.net/qq_39751120/article/details/98664730

@Log(“文件上传”)

@ResponseBody

@PostMapping(“/upload”)

@RequiresPermissions(“common:companyremittance:upload”)

R upload(@RequestParam(“file”) MultipartFile file,@RequestParam(“arrys”) String arrys, @RequestParam(“commpanyname”)

String commpanyname,@RequestParam(“remittancedate”) String remittancedate,HttpServletRequest request) throws ParseException, IOException {

//先上传到图片服务器上面然后在读取信息

int prostatusId=0;

if(StringUtils.isEmpty(arrys)){

return R.error(“导入失败”);

}

String oldName = file.getOriginalFilename();

//使用IDUtils工具类生成新的文件名，新文件名 = newName + 文件后缀

String newName = IDUtils.genImageName();

newName = newName + oldName.substring(oldName.lastIndexOf(“.”));

SftpUtils ft = new SftpUtils();

//通过SFtoInfo 参数连接传入参数即可

Session s = ft.getSession(SFTPInfo.SFTP_REQ_HOST,SFTPInfo.SFTP_DEFAULT_PORT, SFTPInfo.SFTP_REQ_USERNAME,SFTPInfo.SFTP_REQ_PASSWORD);

Channel channel = ft.getChannel(s);

ChannelSftp sftp = (ChannelSftp)channel;

Boolean upload = ft.uploadFile(sftp,SFTPInfo.basePath, file.getInputStream(),newName);

SaveDO saveDO=new SaveDO();

if(upload){

//上传成功关闭信息

saveDO.setFileurl(SFTPInfo.baseUrl+ “/” + newName);

saveDO.setFilename(oldName);

saveDO.setFilesize(String.valueOf(file.getSize()));

saveDO.setImportdate(new Date());

saveDO.setIpaddr(IPUtils.getIpAddr(request));

saveDO.setUsername(ShiroUtils.getUser().getUsername());

saveDO.setSftpupurl(“/usr/fjl/file”); //这里是文件路径上传服务器里面路径 记得chomd 777

saveDO.setNewfilename(newName);

saveService.save(saveDO);

//根据proentId查询项目的状态

CompanyremittanceDO companyremittanceDO1=new CompanyremittanceDO();

companyremittanceDO1.setProparentid(Long.valueOf(arrys));

CompanyremittanceDO aDo = companyremittanceService.getProjectStatus(arrys);

if (aDo != null) {

companyremittanceDO1.setProstatus(aDo.getProstatus());

} else {

//自增状态++1

prostatusId = companyremittanceService.getMaxProStatus();

prostatusId++;

companyremittanceDO1.setProstatus(prostatusId);

}

companyremittanceDO1.setRemittancename(commpanyname);

companyremittanceDO1.setRemittancedate(getDate(remittancedate));

String fileName = file.getOriginalFilename();

fileName = FileUtil.renameToUUID(fileName);

try {

boolean flag= ExcelUtil.batchImport(fileName,file,companyremittanceService,companyremittanceDO1);

if(flag){

if(ft.delete(saveDO.getSftpupurl(),saveDO.getNewfilename(),sftp)){

ft.closeAll(sftp, channel, s); //关闭连接

return R.ok(“导入成功”);

}else{

return R.ok(“数据导入成功！服务器数据文件没有删除！”);

}

}

} catch (Exception e) {

e.printStackTrace();

return R.error();

}