低级错误...
问题代码如下：
private static final Logger log = LoggerFactory.getLogger(FbMessageController.class);
SysUser loguser = userDao.getByUserId(userId);
log.info("loguser = ",loguser.toString()); //问题代码
原因：
log.info中缺少占位符，导致逗号后面的值无法拼接显示
解决：
log.info("loguser = {}",loguser.toString()); //添加占位符