如何使用mybatis？(包括存储过程，函数，事务)

sql语句：

------函数--------
delimiter //
drop function if exists totalStu;

create function totalStu(pageSize int) returns int
begin
    declare total int;
    select ceil(count(1)/pagesize) from studentinfo into total;
    return total;
end;
//
------存储过程---------
drop procedure if exists proPageStu;
//

create procedure proPageStu(out total int,in pageNo int,in pageSize int)
begin
    declare _total int default 0;
    declare _begin int default (pageNo-1)*pageSize;
    select ceil(count(1)/pageSize) from studentinfo into _total;
    set total=_total;
    select * from studentinfo limit _begin,pageSize;
end;
//

public interface StudentInfoMapper 中：

    // 1.函数不能返回结果集
    @Select("select totalStu(#{pageSize})")
    int function(int pageSize);

    // 2.存储过程
    List<StudentInfo> proPageStu(HashMap map);
　　
　　// 3. 存储过程-2：增加PageParam类，包含total,pagesize,pageno入参和出参，其中出参有构造方法

　　List<StudentInfo> proPageStu2(PageParam pageParam);

StudentInfoMapper.xml 

    <select id="proPageStu" resultType="StudentInfo" statementType="CALLABLE" parameterType="map">
        {
          call proPageStu(#{total,mode=OUT,jdbcType=INTEGER},#{pageNo},#{pageSize})
        }
    </select>

// 自动识别pageparam中的total，pageno和pagesize

　　<select id="proPageStu2" resultType="StudentInfo" statementType="CALLABLE" parameterType="PageParam">
    {
      call proPageStu(#{total,mode=OUT,jdbcType=INTEGER},#{pageNo},#{pageSize})
    }
　　</select>

Test

    @Test
    public void func() throws IOException{
        int function = mapper.function(1);
        System.out.println(function);
    }

    @Test
    public void prod() throws IOException{
        HashMap map = new HashMap();
        map.put("pageNo",2);
        map.put("pageSize",8);
        List<StudentInfo> list = mapper.proPageStu(map);
// 存储过程中in和out的值全部放在map中
        System.out.println(map.get("total"));
        for (StudentInfo info : list) {
            System.out.println(info);
        }
    }

@Test
public void prod2() throws IOException{
    PageParam param = new PageParam(8,2);
    List<StudentInfo> list = mapper.proPageStu2(param);
    System.out.println(param.getTotal());
    for (StudentInfo info : list) {
        System.out.println(info);
    }
}