How to solve the problem that the temporary directory for SpringBoot file upload cannot be found-javaTutorial-php.cn

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

王林

Release： 2023-05-15 15:22:22

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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.

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

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");
    }
}

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

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

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();
}

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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();
    }

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Add the above code in Application.java.

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