How to solve the problem that the temporary directory for SpringBoot file upload cannot be found

SpringBoot file upload temporary directory problem

I believe everyone will encounter such a problem when deploying the project to the server:

org.springframework.web.multipart. MultipartException: Could not parse multipart servlet
request;nested exception is java.io.IOException: The temporary upload location
[/tmp/tomcat.1337767218595042057.80/work/Tomcat/localhost/ROOT] is not valid
org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipart
HttpServletRequest.java:112) org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.

This question also confuses me For a long time, I searched online and couldn't find a solution. The only solution is to specify a temporary directory to the server and it will be ok. No nonsense, here is the code.

1. The front desk must be uploaded with the multipart/form-data springMvc component.

2. Just refer to the background code. I used SFTP upload here. File to cloud server

File upload tool refer to this article

//www.jb51.net/article/216456.htm

@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();
        }
        return R.error();
    }else {
        return R.error("上传error");
    }
}

where/usr/fjl/file It is the address of the server path

3. Then the problem is here. Now this definitely cannot solve the upload problem.

(key configuration) Add a new configuration: This code is very critical. This is the temporary address that specifies the temporary upload path (an error will also be reported locally)

@Bean
MultipartConfigElement multipartConfigElement() {
   MultipartConfigFactory factory = new MultipartConfigFactory();
   //factory.setLocation("D:/tmp"); 本地用
      factory.setLocation("/home/temp"); //服务器用
   return factory.createMultipartConfig();
}

Just add this and the file can be uploaded successfully. If it is cross-domain, you will also get the configuration and code configuration in nginx. .

SpringBoot changes the temporary directory of uploaded files

@Bean
    MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        factory.setLocation(tmepPath);
        return factory.createMultipartConfig();
    }

Add the above code in Application.java.

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