分页RowBounds
1.配置查询保持原有数据
<select id="getRolesBySearchName" parameterType="string"
resultType="priv.dengjl.ns.day0001.bean.Role">
select id, name, `desc` from Role where name like
concat('%', #{name}, '%')
</select>
2.定义接口时候，出分页都使用上参数注解
List<Role> getRolesBySearchName(@Param("name") String name, RowBounds rowBounds);
3.调动时候，传入分页RowBounds信息
RowBounds rowBounds = new RowBounds(100, 30);
List<Role> rolesByMap = mapper.getRolesBySearchName("张三", rowBounds);
