springboot上传头像

@Controller
@RequestMapping("/upload")
public class UploadController {

private Logger logger = LoggerFactory.getLogger(this.getClass());

@Autowired
private UserMapper userMapper;

@ResponseBody
@PostMapping(value = "/image")
public JsonResult imgUpload(@RequestParam(value = "file") MultipartFile file,String userNumber) {
    if (null==userMapper.queryByUserNumber(userNumber)) {
        throw new ImcsUserCenterException("该用户不存在！");
    }
    if (file.isEmpty()) {
        throw new ImcsUserCenterException("头像文件不能为空！");
    }

String fileName = file.getOriginalFilename();
String suffixName = fileName.substring(fileName.lastIndexOf("."));
String folder = "/" + LocalDateTimeUtils.formatNow("yyyyMMdd") + "/";
fileName = System.currentTimeMillis() + suffixName;
 
File dest = ImgUtil.createFile(PathsUtils.getAbsolutePath(ConfigConstValue.rootPath + folder + fileName));

    try {
        file.transferTo(dest);
        // 上面是保存图片，先让它保存成功然后再修改数据库
        String fileUrl = folder + fileName;
        Map<String,Object> paramMap = new HashMap<>();
        paramMap.put("fileUrl",fileUrl);
        paramMap.put("userNumber",userNumber);
        userMapper.insertImg(paramMap);
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
        ErrUtils.err(ApiResultEnum.FILE_UPLOAD_ERR);
    }
    return JsonResultBuilder.successMessage(ConfigConstValue.prePath + folder + fileName);
}

}

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