Mybatis-

Posted 2022-12-01 ITdfq

		Example example = new Example();
        Example.Criteria criteria = example.createCriteria();
        criteria.andIdEqualTo(123);
        example.createCriteria().andAddTimeEqualTo(new Date());
        /**
         *  criteria：第二次查询，条件无效，获取旧条件
         */
        List<Inn> inn = innMapper.selectByExample(example);
        //select * from inn_category WHERE ( id = 123 )
        System.out.println(JSON.toJSONString(innCategories));

        System.out.println("-----------------------------------------");
        Example inn = new Example();
        inn.or().andIdEqualTo(123).andAddTimeEqualTo(new Date());
        inn.or().andAddTimeEqualTo(new Date());
        innMapper.selectByExample(inn);
        /**
         * or： 第一个or 
         * 第二个or : 遇上一次是or 不是and 
         * select * from inn_category WHERE ( id = 123 and add_time = '2021-09-29 18:35:01.278' ) or( add_time = '2021-09-29 18:35:01.278' )
         */