<dependency>
? ? <groupId>org.springframework.boot</groupId>
? ? <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

/**
 * 根據(jù)doctorId查詢?nèi)筷P(guān)注列表【分頁(yè)】
 *
 * @param doctorId 醫(yī)生id
 * @return 結(jié)果集
 */
public Map<String, Object> findAllListByDoctorId(Long doctorId, Integer pageIndex, Integer pageSize) {
    Pageable pageable = PageRequest.of(pageIndex - 1, pageSize); // 分頁(yè)
    Page<Follow> pageResult = followRepository.findByDoctorIdOrderByCreatedAtDesc(doctorId, pageable);
    List<FollowDTO> dtoList = followMapper.toDto(pageResult.getContent());
    if (!CollectionUtils.isEmpty(dtoList)) {
        // 處理業(yè)務(wù)邏輯....
    }
    // 封裝分頁(yè)結(jié)果
    Map<String, Object> map = new HashMap<>();
    map.put("pageIndex", pageIndex.toString()); // 當(dāng)前頁(yè)
    map.put("pageSize", pageSize.toString()); // 每頁(yè)條數(shù)
    map.put("total", Long.toString(pageResult.getTotalElements())); // 總記錄數(shù)
    map.put("pages", Integer.toString(pageResult.getTotalPages())); // 總頁(yè)數(shù)
    map.put("list", dtoList); // 數(shù)據(jù)列表
    return map;
}

import com.patient.domain.Follow;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
 
@Repository
public interface FollowRepository extends JpaRepository<Follow, Long> {
 
    Page<Follow> findByDoctorIdOrderByCreatedAtDesc(Long doctorId, Pageable pageable);
}

<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
</dependency>

/**
 * 查詢推廣人員列表，分頁(yè)。
 * @return 封裝的分頁(yè)結(jié)果對(duì)象
 */
public PageResult findPromotePersonList(String hospitalCode,PromotePersonReq promotePersonReq) {
    Integer pageIndex = promotePersonReq.getPageIndex();
    Integer pageSize = promotePersonReq.getPageSize();
    PageHelper.startPage(pageIndex, pageSize); // 每頁(yè)的大小為pageSize，查詢第page頁(yè)的結(jié)果
    List<PromotePerson> list = promotePersonMapper.selectAll();
    PageInfo<PromotePerson> pageInfo = new PageInfo<>(list);
    PageHelper.clearPage();
    // 返回分頁(yè)結(jié)果
    PageResult pageResult = new PageResult();
    pageResult.setPageIndex(pageIndex);
    pageResult.setPageSize(pageSize);
    pageResult.setPages(pageInfo.getPages());
    pageResult.setTotal((int) pageInfo.getTotal());
    pageResult.setList(list);
    return pageResult;
}

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.1.2</version>
</dependency>

/**
 * 我的訂單-待支付[分頁(yè)]
 *
 * @param openid 用戶唯一標(biāo)識(shí)
 * @return 結(jié)果集
 */
public Map<String, Object> findMyOrderNotPay(String openid, Integer pageIndex, Integer pageSize) {
    Map<String, Object> map = new HashMap<>();
    // 查詢
    List<ConsultOrder> orderList = consultOrderRepository.findMyOrderNotPay(openid);
    if (CollectionUtils.isEmpty(orderList)) {
            map.put("pageIndex", pageIndex.toString()); // 當(dāng)前頁(yè)
            map.put("pageSize", pageSize.toString()); // 每頁(yè)條數(shù)
            map.put("total", "0"); // 總記錄數(shù)
            map.put("pages", "0"); // 總頁(yè)數(shù)
            map.put("list", new ArrayList<>()); // 數(shù)據(jù)列表
            return map;
    }
    List<OrderVO> pageList = new ArrayList<>();
    int totalSize = 0;
    int totalPage = 0;
    // 計(jì)算總頁(yè)數(shù)
    totalSize = orderList.size();
        totalPage = PageUtil.totalPage(totalSize, pageSize);
    // 分頁(yè)，索引小于等于總頁(yè)數(shù)，才返回列表.
    if (pageIndex <= totalPage) {
            // 分頁(yè)
            pageList = CollUtil.page(pageIndex, pageSize, orderVOList);
    }
    // 返回結(jié)果
    map.put("pageIndex", Integer.toString(pageIndex)); // 當(dāng)前頁(yè)
    map.put("pageSize", Integer.toString(pageSize)); // 每頁(yè)條數(shù)
    map.put("total", Integer.toString(totalSize)); // 總記錄數(shù)
    map.put("pages", Integer.toString(totalPage)); // 總頁(yè)數(shù)
    map.put("list", pageList); // 數(shù)據(jù)列表
    return map;
}