mybatis-plus关于分页插件的应用

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1.在mybatis配置文件中添加插件的包

2、使用测试类

@Test
    public void TestPage(){
        AdminDao adminDao = applicationContext.getBean("adminDao", AdminDao.class);
        //第二页，每页两条数据
        Page page = new Page(2,2);
        //mybatisplus封装的分页方法，queryWrapper（实体对象封装操作类）条件可以为空
        Page page1 = adminDao.selectPage(page, null);
        //获取记录存在List中后输出
        List records = page1.getRecords();
        for (Object record : records) {
            System.out.println(record);
        }
        //分页page的各个数据
        System.out.println("==============");
        System.out.println("获取总条数："+page.getTotal());
        System.out.println("当前页码："+page.getCurrent());
        System.out.println("总页码："+page.getPages());
        System.out.println("每页显示的条数："+page.getSize());
        System.out.println("是否有上一页："+page.hasPrevious());
        System.out.println("是否有下一页："+page.hasNext());
    }

3、控制台显示

 INFO [main] - {dataSource-1} inited
DEBUG [main] - ==>  Preparing: SELECT COUNT(1) FROM admin 
DEBUG [main] - ==> Parameters: 
TRACE [main] - <==    Columns: COUNT(1)
TRACE [main] - <==        Row: 12
DEBUG [main] - ==>  Preparing: SELECt admin_account,admin_pwd FROM admin LIMIT ?,? 
DEBUG [main] - ==> Parameters: 2(Long), 2(Long)
TRACE [main] - <==    Columns: admin_account, admin_pwd
TRACE [main] - <==        Row: 23333, 123
TRACE [main] - <==        Row: 233333, 123
DEBUG [main] - <==      Total: 2
Admin{adminAccount='23333', adminPwd='123'}
Admin{adminAccount='233333', adminPwd='123'}
==============
获取总条数：12
当前页码：2
总页码：6
每页显示的条数：2
是否有上一页：true
是否有下一页：true