addData.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Student student = new Student();
                student.setStu_id("220142001");
                student.setName("李萍");
                student.setBirthday("1998-03-01");
                student.setClass_id("142");
                student.setGender("女");
                student.setScore(90);
                student.save();
            }
        });