MyBatis-Plus03_分页插件自定义分页

Posted 2022-03-29 所得皆惊喜

文章目录

• ①. 分页插件
• ②. xml自定义分页

①. 分页插件

• ①. MyBatis Plus自带分页插件,只要简单的配置即可实现分页功能

• ②. 添加配置类

@Configuration
public class MybatisPlusConfig 
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() 
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.mysql));
        return interceptor;
    

• ③. 测试

    @Test
    public void testPage()
        Page<User>page=new Page<>(1,2);
        Page<User> userPage = userMapper.selectPage(page, null);
        List<User> records = userPage.getRecords();
        System.out.println("当前页："+page.getCurrent());
        System.out.println("每页显示的条数："+page.getSize());
        System.out.println("总记录数："+page.getTotal());
        System.out.println("总页数："+page.getPages());
        System.out.println("是否有上一页："+page.hasPrevious());
        System.out.println("是否有下一页："+page.hasNext());
    

②. xml自定义分页

• ①. UserMapper中定义接口方法

@Repository
public interface UserMapper extends BaseMapper<User> 
    //根据年龄进行分页查询
    Page<User>selectPageVoByAge(@Param("page") Page<User>page, @Param("age") Integer age);

<mapper namespace="com.xiaozhi.mybatisplus.mapper.UserMapper">
    <select id="selectPageVoByAge" resultType="com.xiaozhi.mybatisplus.entities.User">
        select * from t_user where age>#age
    </select>
</mapper>

• ②. 测试

    @Test
    public void testSelectPageVoByAge()
        Page<User>page=new Page<>(1,2);
        Page<User> userPage = userMapper.selectPageVoByAge(page, 20);
        List<User> records = userPage.getRecords();
        System.out.println("当前页："+page.getCurrent());
        System.out.println("每页显示的条数："+page.getSize());
        System.out.println("总记录数："+page.getTotal());
        System.out.println("总页数："+page.getPages());
        System.out.println("是否有上一页："+page.hasPrevious());
        System.out.println("是否有下一页："+page.hasNext());