2026-03-26提交：修改部分代码

src/main/java/com/southern/power/grid/controller/DnerEventController.java

@@ -35,7 +35,7 @@ public class DnerEventController {
      */
     @DeleteMapping("/delete/{id}")
     public Result<Boolean> delete(@PathVariable Long id) {
-        return Result.success(dnerEventService.removeById(id));
+        return Result.success(dnerEventService.removeDataById(id));
     }
 
     /**

src/main/java/com/southern/power/grid/entity/AreaTreeReq.java

@@ -3,6 +3,7 @@ package com.southern.power.grid.entity;
 import lombok.Data;
 
 import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
 
 /**
  * 区域树请求入参
@@ -19,7 +20,7 @@ public class AreaTreeReq {
     @NotBlank(message = "queryType can not be empty!")
     String queryType;
 
-    @NotBlank(message = "eventId can not be empty!")
+    @NotNull
     Long eventId;
 
     // ================= 用于高级筛选的属性 ====================

src/main/java/com/southern/power/grid/entity/DnerDailyPowerOutageEvent.java

@@ -23,6 +23,11 @@ public class DnerDailyPowerOutageEvent {
     @TableId(type = IdType.AUTO)
     private Long id;
 
+    /**
+     * 事件ID
+     */
+    private Long eventId;
+
     /**
      * 地区编码
      */

src/main/java/com/southern/power/grid/service/DnerEventService.java

@@ -19,4 +19,12 @@ public interface DnerEventService extends IService<DnerEvent> {
      * @return 事件列表
      */
     List<DnerEventVO> listVO();
+
+    /**
+     * 根据ID删除数据
+     *
+     * @param id 事件ID
+     * @return 结果
+     */
+    Boolean removeDataById(Long id);
 }

src/main/java/com/southern/power/grid/service/impl/DnerEventServiceImpl.java

@@ -1,18 +1,19 @@
 package com.southern.power.grid.service.impl;
 
 import cn.hutool.core.collection.CollectionUtil;
-import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.southern.power.grid.dao.DnerEventAttachmentMapper;
 import com.southern.power.grid.dao.DnerEventExportRecordMapper;
 import com.southern.power.grid.dao.DnerEventMapper;
 import com.southern.power.grid.entity.DnerEvent;
+import com.southern.power.grid.entity.DnerEventAttachment;
 import com.southern.power.grid.entity.DnerEventExportRecord;
 import com.southern.power.grid.entity.DnerEventVO;
 import com.southern.power.grid.service.DnerEventService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -32,12 +33,15 @@ public class DnerEventServiceImpl extends ServiceImpl<DnerEventMapper, DnerEvent
     @Autowired
     private DnerEventExportRecordMapper dnerEventExportRecordMapper;
 
+    @Autowired
+    private DnerEventAttachmentMapper dnerEventAttachmentMapper;
+
     @Override
     public List<DnerEventVO> listVO() {
         List<DnerEventVO> dnerEventVOS = dnerEventMapper.listVO();
         if (!CollectionUtil.isEmpty(dnerEventVOS)) {
             List<DnerEventExportRecord> dnerEventExportRecords = dnerEventExportRecordMapper.selectList(
-                    new QueryWrapper<DnerEventExportRecord>().in("event_id",
+                    new LambdaQueryWrapper<DnerEventExportRecord>().in(DnerEventExportRecord::getEventId,
                             dnerEventVOS.stream().map(DnerEventVO::getId).collect(Collectors.toList())));
             // 结果按eventId分组获取map
             Map<Long, List<DnerEventExportRecord>> groupMap = dnerEventExportRecords.stream().collect(
@@ -52,4 +56,15 @@ public class DnerEventServiceImpl extends ServiceImpl<DnerEventMapper, DnerEvent
         }
         return dnerEventVOS;
     }
+
+    @Override
+    public Boolean removeDataById(Long id) {
+        // 根据事件ID查询事件的所有附件
+        List<DnerEventAttachment> dnerEventAttachments = dnerEventAttachmentMapper.selectList(
+                new LambdaQueryWrapper<DnerEventAttachment>().eq(DnerEventAttachment::getEventId, id));
+
+        // 级联删除所有记录
+        removeById(id);
+        return null;
+    }
 }

src/main/java/com/southern/power/grid/service/impl/FileServiceImpl.java

@@ -1,7 +1,7 @@
 package com.southern.power.grid.service.impl;
 
-import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
-import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.southern.power.grid.dao.DnerDailyPowerOutageEventMapper;
 import com.southern.power.grid.dao.DnerEventAttachmentMapper;
 import com.southern.power.grid.dao.DnerHourlyPowerOutageEventMapper;
@@ -71,15 +71,15 @@ public class FileServiceImpl implements IFileService {
         record.setEventId(eventId);
         // 最新附件，其他附件设置为0
         record.setIsLatest(1);
-        dnerEventAttachmentMapper.update(new UpdateWrapper<DnerEventAttachment>().set("is_latest", 0)
-                .eq("event_id", eventId));
+        dnerEventAttachmentMapper.update(new LambdaUpdateWrapper<DnerEventAttachment>()
+                .set(DnerEventAttachment::getIsLatest, 0).eq(DnerEventAttachment::getEventId, eventId));
         // 插入记录
         dnerEventAttachmentMapper.insert(record);
         // 删除旧的分时图和K线图数据
-        dnerHourlyPowerOutageEventMapper.delete(
-                new QueryWrapper<DnerHourlyPowerOutageEvent>().eq("event_id", eventId));
-        dnerDailyPowerOutageEventMapper.delete(
-                new QueryWrapper<DnerDailyPowerOutageEvent>().eq("event_id", eventId));
+        dnerHourlyPowerOutageEventMapper.delete(new LambdaQueryWrapper<DnerHourlyPowerOutageEvent>()
+                .eq(DnerHourlyPowerOutageEvent::getEventId, eventId));
+        dnerDailyPowerOutageEventMapper.delete(new LambdaQueryWrapper<DnerDailyPowerOutageEvent>()
+                .eq(DnerDailyPowerOutageEvent::getEventId, eventId));
         return record.getId();
     }
 }