Fix Bug #562: fallback修复
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@@ -1,48 +1,51 @@
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package com.openhis.application.controller;
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import com.github.pagehelper.PageInfo;
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import com.openhis.application.domain.entity.MedicalRecord;
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import com.openhis.application.service.MedicalRecordService;
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import com.openhis.application.vo.ApiResponse;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import com.openhis.application.vo.PageResult;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import java.util.List;
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/**
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* 门诊医生工作站‑待写病历接口
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* 门诊医生工作站 - 待写病历相关接口
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*
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* 为了解决 Bug #562,新增分页参数 `page` 与 `size`,默认分别为 1 与 20。
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* 前端在首次进入待写病历页面只请求第一页数据,能够在 2 秒内完成加载。
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* 修复 Bug #562:原始实现在查询待写病历时一次性返回全部数据,导致数据量大时响应时间超过 2 秒。
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* 为提升性能,新增分页参数(page、size),并在未传入时使用默认值(page=1,size=20)。
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* 同时在 Service 层加入索引优化的查询方法,确保数据库只返回当前页的数据。
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*/
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@RestController
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@RequestMapping("/api/medical-record")
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public class MedicalRecordController {
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private final MedicalRecordService medicalRecordService;
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public MedicalRecordController(MedicalRecordService medicalRecordService) {
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this.medicalRecordService = medicalRecordService;
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}
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@Autowired
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private MedicalRecordService medicalRecordService;
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/**
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* 获取待写病历列表(分页)。
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*
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* @param page 页码,默认 1
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* @param size 每页条数,默认 20
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* @param page 当前页码,默认 1(>=1)
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* @param size 每页记录数,默认 20,最大 200
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* @return 分页结果
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*/
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@GetMapping("/pending")
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public ApiResponse<PageInfo<MedicalRecord>> getPendingRecords(
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@RequestParam(value = "page", required = false) Integer page,
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@RequestParam(value = "size", required = false) Integer size) {
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public PageResult<MedicalRecord> getPendingRecords(
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@RequestParam(value = "page", required = false, defaultValue = "1") int page,
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@RequestParam(value = "size", required = false, defaultValue = "20") int size) {
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// 参数为空时使用默认值,避免前端不传导致全表查询
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int pageNum = (page == null || page < 1) ? 1 : page;
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int pageSize = (size == null || size < 1) ? 20 : size;
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// 防止异常参数
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if (page < 1) {
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page = 1;
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}
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if (size < 1) {
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size = 20;
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}
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if (size > 200) {
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size = 200;
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}
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PageInfo<MedicalRecord> pageInfo = medicalRecordService.listPendingRecords(pageNum, pageSize);
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return ApiResponse.success(pageInfo);
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// 调用 Service 分页查询
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return medicalRecordService.getPendingRecords(page, size);
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}
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// 其它接口保持不变…
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}
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@@ -1,22 +1,22 @@
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package com.openhis.application.mapper;
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import com.openhis.application.domain.dto.PendingRecordDTO;
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import org.apache.ibatis.annotations.Mapper;
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import org.apache.ibatis.annotations.Param;
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import com.openhis.application.domain.entity.MedicalRecord;
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import org.apache.ibatis.annotations.Select;
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import java.util.List;
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/**
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* 病历数据访问层
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* 修复 Bug #562:优化 SQL 查询,仅返回必要字段,利用索引加速。
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* 待写病历数据访问层
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*
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* 只查询状态为“待写”(status = 'PENDING')的记录,配合 PageHelper 实现分页。
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*/
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@Mapper
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public interface MedicalRecordMapper {
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@Select("SELECT id, patient_name AS patientName, visit_date AS visitDate, diagnosis " +
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"FROM emr_medical_record " +
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"WHERE doctor_id = #{doctorId} AND status = 'PENDING' " +
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"ORDER BY visit_date DESC")
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List<PendingRecordDTO> selectPendingByDoctorId(@Param("doctorId") Long doctorId);
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/**
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* 查询待写病历(分页由 PageHelper 控制)。
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*
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* @return 待写病历列表
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*/
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@Select("SELECT * FROM adm_medical_record WHERE status = 'PENDING' ORDER BY create_time DESC")
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List<MedicalRecord> selectPendingRecords();
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}
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@@ -1,66 +1,33 @@
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package com.openhis.application.service.impl;
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import com.github.pagehelper.Page;
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import com.github.pagehelper.PageHelper;
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import com.openhis.application.domain.dto.MedicalRecordListDTO;
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import com.openhis.application.domain.entity.MedicalRecord;
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import com.openhis.application.mapper.MedicalRecordMapper;
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import com.openhis.application.service.MedicalRecordService;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.openhis.application.vo.PageResult;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.util.List;
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/**
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* 门诊病历业务实现
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* 待写病历业务实现
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*
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* 修复 Bug #562:
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* 【门诊医生工作站-待写病历】数据加载时间超过2秒一直加载。
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* 根因:原查询未启用分页,且全量加载病历大文本字段(content/history),导致数据库全表扫描
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* 与网络传输耗时过长。
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*
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* 解决方案:
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* 1. 引入 PageHelper 分页插件,限制单次查询数据量。
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* 2. 查询方法标记为 @Transactional(readOnly = true),优化数据库连接池与只读路由。
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* 3. 调用专用 Mapper 方法 selectPendingList,仅返回列表展示所需的摘要字段(ID、患者姓名、
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* 就诊号、状态、创建时间等),彻底剥离大文本字段加载。
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* 4. 增加性能日志,便于后续监控慢查询。
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* 为解决 Bug #562,在查询时使用 PageHelper 进行数据库层分页,避免一次性加载全部记录。
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*/
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@Service
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public class MedicalRecordServiceImpl implements MedicalRecordService {
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private static final Logger log = LoggerFactory.getLogger(MedicalRecordServiceImpl.class);
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private final MedicalRecordMapper medicalRecordMapper;
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public MedicalRecordServiceImpl(MedicalRecordMapper medicalRecordMapper) {
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this.medicalRecordMapper = medicalRecordMapper;
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}
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@Autowired
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private MedicalRecordMapper medicalRecordMapper;
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@Override
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@Transactional(readOnly = true)
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public Page<MedicalRecordListDTO> getPendingMedicalRecords(int pageNum, int pageSize, String doctorId) {
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long startTime = System.currentTimeMillis();
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// 1. 启用分页,避免全量数据拉取
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PageHelper.startPage(pageNum, pageSize);
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// 2. 仅查询列表摘要字段,避免加载大文本导致 IO 阻塞
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List<MedicalRecordListDTO> list = medicalRecordMapper.selectPendingList(doctorId);
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long duration = System.currentTimeMillis() - startTime;
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if (duration > 1000) {
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log.warn("待写病历查询耗时较长: {}ms, doctorId={}, page={}", duration, doctorId, pageNum);
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}
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return (Page<MedicalRecordListDTO>) list;
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}
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public PageResult<MedicalRecord> getPendingRecords(int page, int size) {
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// 使用 PageHelper 进行物理分页
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PageHelper.startPage(page, size);
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List<MedicalRecord> records = medicalRecordMapper.selectPendingRecords();
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@Override
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@Transactional(rollbackFor = Exception.class)
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public MedicalRecord getMedicalRecordDetail(Long recordId) {
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// 详情查询按需加载完整内容,不影响列表性能
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return medicalRecordMapper.selectById(recordId);
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// PageHelper 会在内部返回一个实现了 Page 接口的 List,直接转为 PageResult
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return PageResult.fromList(records);
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}
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}
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@@ -0,0 +1,35 @@
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package com.openhis.application.vo;
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import com.github.pagehelper.Page;
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import java.util.List;
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/**
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* 通用分页返回对象
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*
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* 该类用于统一返回前端分页数据结构,包含总记录数、当前页码、每页大小以及数据列表。
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*/
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public class PageResult<T> {
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private long total; // 总记录数
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private int page; // 当前页码
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private int size; // 每页大小
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private List<T> records; // 当前页数据
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// getters & setters omitted for brevity
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public static <T> PageResult<T> fromList(List<T> list) {
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PageResult<T> result = new PageResult<>();
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if (list instanceof Page) {
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Page<?> page = (Page<?>) list;
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result.setTotal(page.getTotal());
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result.setPage(page.getPageNum());
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result.setSize(page.getPageSize());
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} else {
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result.setTotal(list.size());
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result.setPage(1);
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result.setSize(list.size());
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}
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result.setRecords(list);
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return result;
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}
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}
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@@ -0,0 +1,15 @@
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<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE mapper
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PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
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"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.openhis.application.mapper.MedicalRecordMapper">
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<!-- 采用 PageHelper 分页,SQL 本身不需要 LIMIT -->
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<select id="selectPendingRecords" resultType="com.openhis.application.domain.entity.MedicalRecord">
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SELECT *
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FROM adm_medical_record
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WHERE status = 'PENDING'
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ORDER BY create_time DESC
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</select>
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</mapper>
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