不知道什么原因，无法运行

Creating a new SqlSession
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e780e48] was not registered for synchronization because synchronization is not active
JDBC Connection [HikariProxyConnection@990308471 wrapping com.mysql.cj.jdbc.ConnectionImpl@64e87663] will not be managed by Spring
==>  Preparing: select * from student
==> Parameters: 
<==    Columns: stu_num, stu_name, stu_id, stu_major, stu_class, stu_college
<==        Row: 22892, null, null, null, null, null
<==        Row: 336776, null, null, null, null, null
<==        Row: 567514, null, null, null, null, null
<==        Row: 666716, null, null, null, null, null
<==        Row: 790124, null, null, null, null, null
<==        Row: 922954, null, null, null, null, null
<==      Total: 6
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e780e48]

mybatis的字段映射没配置对吧