使用PageInfo分页查询列表

先引入依赖

    <!-- pageHelper -->
    <dependency>
        <groupId>com.github.pagehelper</groupId>
        <artifactId>pagehelper-spring-boot-starter</artifactId>
        <version>1.2.13</version>
        <exclusions>
            <exclusion>
                <artifactId>mybatis-spring</artifactId>
                <groupId>org.mybatis</groupId>
            </exclusion>
            <exclusion>
                <artifactId>mybatis</artifactId>
                <groupId>org.mybatis</groupId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>

service层

    @Override
    public PageInfo<SysHospital> sysHospitalList(SearchHospitalListReq req) {
        PageHelper.startPage(req.getPageNum(), req.getPageSize());
        Example example = new Example(SysHospital.class);
        Example.Criteria criteria = example.createCriteria().andEqualTo("deleteFlag", DeleteFlagEnum.NORMAL.getCode())
                .andEqualTo("hospitalType",req.getHospitalType());
        example.setOrderByClause("create_time desc");
        List<SysHospital> sysHospitals = sysHospitalMapper.selectByExample(example);
        PageInfo pageInfo = PageInfo.of(sysHospitals);
        pageInfo.setList(sysHospitals);
        return pageInfo;
    }