修改格式；修改getLabelsByBookId的返回值

Signed-off-by: Zhao Yanxia <1716655706@qq.com>
去掉了echo调试语句

Signed-off-by: Zhao Yanxia <1716655706@qq.com>
评论列表命名错误，修改为commentList

Signed-off-by: Zhao Yanxia <1716655706@qq.com>
增加了根据用户id获取他的图书的信息

Signed-off-by: Zhao Yanxia <1716655706@qq.com>
添加搜索图书功能

Signed-off-by: Zhao Yanxia <1716655706@qq.com>
Signed-off-by: Zhao Yanxia <1716655706@qq.com>