MultipartFile 图片上传到Linux服务器Tomcat下的webapps目录

第一次接触 linux 服务器,做图片上传的时候遇到了些坑,搞了些天总算成功了,记录一下

/**
 * 上传图片
 *
 * @param request
 * @param file
 * @return
 */
@RequestMapping(value = "uploadImg", method = RequestMethod.POST)
@ResponseBody
public String uploadImg1(HttpServletRequest request, MultipartFile file) {
    Gson gson = new Gson();
    List<String> pathList = new ArrayList<String>();
    String pic_path;
    if (null != file) {
        // 文件原名称
        String myFileName = file.getOriginalFilename();
        String fileName = UUID.randomUUID().toString() + "." + myFileName.
                substring(myFileName.lastIndexOf(".") + 1);
        try {
            String tomcat_path = System.getProperty("user.dir");
            //获取tomcat中项目同级路径
            String bin_path = tomcat_path.substring(tomcat_path.lastIndexOf("/") + 1, tomcat_path.length());
            if (("bin").equals(bin_path)) {
                pic_path = tomcat_path.substring(0, System.getProperty("user.dir").lastIndexOf("/")) + "/webapps" + "/upload" + "/uploadImg/";
            } else {
                pic_path = tomcat_path + "/webapps" + "/upload" + "/uploadImg/";
            }
            logger.info("上传图片的路径：" + pic_path + fileName);
            File fileDir = new File(pic_path + fileName);
            //如果不存在 则创建
            if (!fileDir.exists()) {
                fileDir.mkdirs();
            }
            // 将内存中的数据写入磁盘
            file.transferTo(fileDir);
//图片路径 ip:端口/upload/uploadImg/图片名

pathList.add(ImgConstant.ACCESS_IMAGE_URL + fileName);

            return gson.toJson(pathList);
        } catch (IllegalStateException e) {
            logger.error("图片上传错误", e);
        } catch (IOException e) {
            logger.error("图片上传错误", e);
        }
    } else {
        System.out.println("上传内容为空！");
    }
    return gson.toJson(pathList);
}