linux上传logo头像图片，回显到页面。springboot_linux服务器上的图片上传和回显-优快云博客

本文链接：https://blog.youkuaiyun.com/hfuningn/article/details/86486973

该博客介绍了一个在Linux系统中使用SpringBoot进行图片上传的方法，包括判断系统类型、设置目标路径、检查文件类型和大小，以及将图片保存到指定路径并更新数据库记录。

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//本地windows系统，项目要部署在linux系统。

public Map<String, Object> uploadFile(HttpServletRequest request, MultipartFile uploadFile, Long id,String targetPath) {
       Map<String, Object> resultMap = new HashMap<>();
       String path = null;
       String os = System.getProperties().getProperty("os.name");

//判断系统是windows，还是linux系统
       if (!os.toLowerCase().startsWith("win")) {
           // linux
           path = targetPath;//-----/home/admin/upload
       } else {
           path = request.getSession().getServletContext().getRealPath("upload");
       }
       log.info("========path=========" + path);
       String originalFilename = uploadFile.getOriginalFilename();
       String fileTyle = originalFilename.substring(originalFilename.lastIndexOf(".") + 1, originalFilename.length());
       String newFileName = getFileNameStr() + "." + fileTyle;
       long size = uploadFile.getSize();
       String[] types = OrganizationConstant.IMG_TYPES;
       if (!Arrays.asList(types).contains(fileTyle.toUpperCase())) {
           throw new BusinessValidationException(
                   "请选择" + String.format("%s,%s,%s", OrganizationConstant.IMG_TYPES) + "图片类型");
       }
       if (size > OrganizationConstant.MAXSIZE) {
           throw new BusinessValidationException("图片大于" + OrganizationConstant.MAXSIZE / 1024 + "KB，请重新上传");
       }
       originalFilename = newFileName;
       File targetFile = new File(path, originalFilename);
       log.info("路径：" + path + originalFilename);
       File pathExist = new File(path);
       if (!pathExist.exists()) {
           pathExist.mkdirs();
       }
       try {
           uploadFile.transferTo(targetFile);
           SystemPlat system = new SystemPlat();
           system.setId(id);
           system.setLogoUrl(File.separator + originalFilename);
           systemMapper.updateSystem(system);
           resultMap.put("id", id);
           resultMap.put("success", true);
       } catch (Exception e) {
           throw new ServiceValidationException("上传图片出错！", e);
       }
       return resultMap;
   }