SSM修改方法出现乱码怎么解决?

Question

[DEBUG] 2018-08-16 10:55:29,169 com.bdqn.mapper.StudentMapper.UpdStu - ==>  Preparing: update StudentInfo set sname=?,sage=?,sgender=?,saddress=?,semail=? where sid=?; 

[DEBUG] 2018-08-16 10:55:29,187 com.bdqn.mapper.StudentMapper.UpdStu - ==> Parameters: ?????¨è??(String), 19(Integer), ???(String), ????????????é?????(String), [e-mail](String), 0(Integer)