2026-03-27提交：下载导入模板

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

@@ -5,8 +5,12 @@ import com.southern.power.grid.entity.DnerEvent;
 import com.southern.power.grid.entity.DnerEventVO;
 import com.southern.power.grid.service.DnerEventService;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.Resource;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
 
+import java.time.LocalDateTime;
 import java.util.List;
 
 /**
@@ -31,11 +35,11 @@ public class DnerEventController {
     }
 
     /**
-     * 根据ID删除事件（级联删除附件、导出记录）
+     * 根据ID删除事件（还包括删除附件和导出记录）
      */
     @DeleteMapping("/delete/{id}")
     public Result<Boolean> delete(@PathVariable Long id) {
-        return Result.success(dnerEventService.removeById(id));
+        return Result.success(dnerEventService.removeDataById(id));
     }
 
     /**
@@ -43,6 +47,7 @@ public class DnerEventController {
      */
     @PutMapping("/update")
     public Result<Boolean> update(@RequestBody DnerEvent event) {
+        event.setUpdateTime(LocalDateTime.now());
         return Result.success(dnerEventService.updateById(event));
     }
 
@@ -62,8 +67,35 @@ public class DnerEventController {
         return Result.success(dnerEventService.listVO());
     }
 
+    /**
+     * 备份
+     *
+     * @param eventId 事件ID
+     * @return 结果
+     */
     @GetMapping("/copy/{eventId}")
     public Result<Boolean> copy(@PathVariable Long eventId) {
         return Result.success(dnerEventService.copy(eventId));
     }
+
+    /**
+     * 导入模板
+     *
+     * @param file 模板文件
+     * @return 结果
+     */
+    @PostMapping("/uploadTemplate")
+    public Result<Boolean> uploadTemplate(@RequestParam("file") MultipartFile file) {
+        return Result.success(dnerEventService.uploadTemplate(file));
+    }
+
+    /**
+     * 下载模板
+     *
+     * @return 结果
+     */
+    @PostMapping("/downloadTemplate")
+    public ResponseEntity<Resource> downloadTemplate() {
+        return dnerEventService.downloadTemplate();
+    }
 }

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

@@ -3,6 +3,9 @@ package com.southern.power.grid.service;
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.southern.power.grid.entity.DnerEvent;
 import com.southern.power.grid.entity.DnerEventVO;
+import org.springframework.core.io.Resource;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 
@@ -27,4 +30,27 @@ public interface DnerEventService extends IService<DnerEvent> {
      * @return 是否成功
      */
     Boolean copy(Long eventId);
+
+    /**
+     * 删除事件、附件、导出记录
+     *
+     * @param id 事件ID
+     * @return 是否成功
+     */
+    Boolean removeDataById(Long id);
+
+    /**
+     * 上传附件
+     *
+     * @param file 附件
+     * @return 是否成功
+     */
+    Boolean uploadTemplate(MultipartFile file);
+
+    /**
+     * 下载模板
+     *
+     * @return 响应体
+     */
+    ResponseEntity<Resource> downloadTemplate();
 }

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

@@ -18,4 +18,11 @@ public interface IFileService {
      * @param eventId 事件ID
      */
     Long uploadExcel(MultipartFile file, Long eventId) throws IOException;
+
+    /**
+     * 上传导入模板
+     *
+     * @param file 文件
+     */
+    void uploadTemplate(MultipartFile file) throws IOException;
 }

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

@@ -5,12 +5,19 @@ import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.southern.power.grid.dao.*;
 import com.southern.power.grid.entity.*;
+import com.southern.power.grid.service.DnerEventAttachmentService;
 import com.southern.power.grid.service.DnerEventService;
+import com.southern.power.grid.service.IFileService;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.Resource;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.multipart.MultipartFile;
 
+import java.io.IOException;
 import java.time.LocalDateTime;
 import java.util.List;
 import java.util.Map;
@@ -42,6 +49,12 @@ public class DnerEventServiceImpl extends ServiceImpl<DnerEventMapper, DnerEvent
     @Autowired
     private DnerDailyPowerOutageEventMapper dnerDailyPowerOutageEventMapper;
 
+    @Autowired
+    private IFileService fileService;
+
+    @Autowired
+    private DnerEventAttachmentService dnerEventAttachmentService;
+
     @Override
     public List<DnerEventVO> listVO() {
         List<DnerEventVO> dnerEventVOS = dnerEventMapper.listVO();
@@ -113,4 +126,36 @@ public class DnerEventServiceImpl extends ServiceImpl<DnerEventMapper, DnerEvent
         }
         return Boolean.TRUE;
     }
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public Boolean removeDataById(Long id) {
+        removeById(id);
+        dnerEventAttachmentMapper.delete(
+                new LambdaQueryWrapper<DnerEventAttachment>().eq(DnerEventAttachment::getEventId, id));
+        dnerEventExportRecordMapper.delete(
+                new LambdaQueryWrapper<DnerEventExportRecord>().eq(DnerEventExportRecord::getEventId, id));
+        return true;
+    }
+
+    @Override
+    public Boolean uploadTemplate(MultipartFile file) {
+        try {
+            fileService.uploadTemplate(file);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        return null;
+    }
+
+    @Override
+    public ResponseEntity<Resource> downloadTemplate() {
+        DnerEventAttachment templateAttachment = dnerEventAttachmentMapper.selectOne(
+                new LambdaQueryWrapper<DnerEventAttachment>().eq(DnerEventAttachment::getEventId, 0));
+        if (Objects.isNull(templateAttachment)) {
+            log.error("Template is not found!");
+            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
+        }
+        return dnerEventAttachmentService.downloadExcel(templateAttachment.getId());
+    }
 }

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

@@ -1,5 +1,6 @@
 package com.southern.power.grid.service.impl;
 
+import cn.hutool.core.io.FileUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.southern.power.grid.dao.DnerDailyPowerOutageEventMapper;
@@ -21,6 +22,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
 import java.time.LocalDateTime;
+import java.util.Objects;
 
 /**
  * 文件操作 服务实现类
@@ -90,4 +92,42 @@ public class FileServiceImpl implements IFileService {
 
         return record.getId();
     }
+
+    @Override
+    public void uploadTemplate(MultipartFile file) throws IOException {
+        // 上传导入模板，只需要维护附件表中eventId=0的一条记录即可
+        // 1、校验是否是 Excel
+        if (!FileUploadUtil.isExcel(file)) {
+            throw new RuntimeException("Only .xlsx or .xls format Excel files are allowed to be uploaded.");
+        }
+
+        // 2、删除旧的模板和记录
+        DnerEventAttachment eventAttachment = dnerEventAttachmentMapper.selectOne(
+                new LambdaQueryWrapper<DnerEventAttachment>().eq(DnerEventAttachment::getEventId, 0L));
+        if (!Objects.isNull(eventAttachment)) {
+            String filePath = eventAttachment.getFilePath();
+            FileUtil.del(filePath);
+            dnerEventAttachmentMapper.deleteById(eventAttachment.getId());
+        }
+        // 3. 获取文件信息
+        String originalFilename = file.getOriginalFilename();
+        String suffix = FileUploadUtil.getFileSuffix(originalFilename);
+        String storedFilename = FileUploadUtil.generateUniqueFileName(suffix);
+        String absolutePath = uploadPath + storedFilename;
+        // 4. 保存到本地
+        FileUploadUtil.saveFile(file, absolutePath);
+        // 5. 记录到数据库
+        DnerEventAttachment record = new DnerEventAttachment();
+        record.setFileName(originalFilename);
+        record.setStoredFileName(storedFilename);
+        record.setFilePath(absolutePath);
+        record.setFileSize(file.getSize());
+        record.setFileType(suffix);
+        record.setCreateTime(LocalDateTime.now());
+        record.setCreator("admin"); // 默认admin
+        record.setEventId(0L);
+        record.setIsLatest(1);
+        // 插入记录
+        dnerEventAttachmentMapper.insert(record);
+    }
 }

src/main/resources/sql/20260313-001.sql

@@ -322,11 +322,7 @@ CREATE TABLE `dner_event_attachment`
     `is_latest`        TINYINT      NOT NULL DEFAULT '1' COMMENT '是否最新附件（1:是 0:否）',
     `creator`          VARCHAR(64)  NOT NULL COMMENT '上传人',
     `create_time`      DATETIME              default current_timestamp NOT NULL COMMENT '上传时间',
-    PRIMARY KEY (`id`),
+    PRIMARY KEY (`id`)
-    KEY `idx_event_id` (`event_id`),
-    CONSTRAINT `fk_attachment_event` FOREIGN KEY (`event_id`) REFERENCES `dner_event` (`id`)
-        ON DELETE CASCADE
-        ON UPDATE RESTRICT
 ) ENGINE = InnoDB
   DEFAULT CHARSET = utf8mb4 COMMENT ='事件附件表';
 
@@ -340,10 +336,6 @@ CREATE TABLE `dner_event_export_record`
     `file_name`   VARCHAR(255)                       NOT NULL COMMENT '导出文件名',
     `file_path`   VARCHAR(512)                       NOT NULL COMMENT '导出文件路径',
     `file_type`   VARCHAR(32)                        NOT NULL COMMENT '导出文件类型',
-    PRIMARY KEY (`id`),
+    PRIMARY KEY (`id`)
-    KEY `idx_event_id` (`event_id`),
-    CONSTRAINT `fk_export_event` FOREIGN KEY (`event_id`) REFERENCES `dner_event` (`id`)
-        ON DELETE CASCADE
-        ON UPDATE RESTRICT
 ) ENGINE = InnoDB
   DEFAULT CHARSET = utf8mb4 COMMENT ='事件导出记录表';