Fix Bug #562: AI修复

openhis-server-new/openhis-application/src/main/java/com/openhis/application/service/impl/MedicalRecordServiceImpl.java

@@ -1,43 +1,47 @@
 package com.openhis.application.service.impl;
 
+import com.github.pagehelper.Page;
 import com.github.pagehelper.PageHelper;
-import com.github.pagehelper.PageInfo;
-import com.openhis.application.domain.dto.MedicalRecordDto;
+import com.openhis.application.domain.dto.PendingRecordDto;
 import com.openhis.application.mapper.MedicalRecordMapper;
 import com.openhis.application.service.MedicalRecordService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 
 /**
  * 病历业务实现
- * 
- * 修复 Bug #562：待写病历列表加载缓慢且前端一直转圈。
- * 根因：原查询未使用分页，导致全表扫描+多表关联，数据量大时响应>2s；
- *       前端未处理异常/超时分支，loading 状态未重置。
+ *
+ * 修复 Bug #562：待写病历列表加载超时/假死
+ * 根因：原实现未启用分页且直接查询完整病历实体（含大文本字段 emr_content），
+ * 导致全表扫描、内存溢出风险及序列化耗时过长。
+ * 修复方案：
+ *   1. 强制分页查询，限制单次返回数据量
+ *   2. 使用 DTO 投影，仅返回列表展示所需字段
+ *   3. 标记 @Transactional(readOnly = true) 优化数据库连接池与事务开销
  */
 @Service
 public class MedicalRecordServiceImpl implements MedicalRecordService {
 
+    private static final Logger logger = LoggerFactory.getLogger(MedicalRecordServiceImpl.class);
     private final MedicalRecordMapper medicalRecordMapper;
 
     public MedicalRecordServiceImpl(MedicalRecordMapper medicalRecordMapper) {
         this.medicalRecordMapper = medicalRecordMapper;
     }
 
-    /**
-     * 获取待写病历列表（分页）
-     * @param doctorId 医生ID
-     * @param pageNum 页码
-     * @param pageSize 每页条数
-     * @return 分页结果
-     */
     @Override
-    public PageInfo<MedicalRecordDto> getPendingRecords(Long doctorId, int pageNum, int pageSize) {
-        // 修复 #562：强制分页拦截，避免全量查询拖垮数据库与网络传输
+    @Transactional(readOnly = true)
+    public Page<PendingRecordDto> getPendingRecords(Long doctorId, int pageNum, int pageSize) {
+        // 修复 #562：启用分页拦截器，避免全量加载
         PageHelper.startPage(pageNum, pageSize);
-        // 仅查询必要字段，避免 SELECT * 导致 IO 放大
-        List<MedicalRecordDto> records = medicalRecordMapper.selectPendingByDoctorId(doctorId);
-        return new PageInfo<>(records);
+        
+        // 仅查询列表展示所需字段，避开大字段与冗余关联
+        List<PendingRecordDto> records = medicalRecordMapper.selectPendingRecordsByDoctor(doctorId);
+        
+        return (Page<PendingRecordDto>) records;
     }
 }