4.3 私人空间图片批量编辑

src/main/java/edu/whut/smilepicturebackend/controller/PictureController.java

@@ -294,4 +294,15 @@ public class PictureController {
         List<PictureVO> pictureVOList = pictureService.searchPictureByColor(spaceId, picColor, loginUser);
         return ResultUtils.success(pictureVOList);
     }
+
+    /**
+     * 批量编辑图片
+     */
+    @PostMapping("/edit/batch")
+    public BaseResponse<Boolean> editPictureByBatch(@RequestBody PictureEditByBatchRequest pictureEditByBatchRequest, HttpServletRequest request) {
+        ThrowUtils.throwIf(pictureEditByBatchRequest == null, ErrorCode.PARAMS_ERROR);
+        User loginUser = userService.getLoginUser(request);
+        pictureService.editPictureByBatch(pictureEditByBatchRequest, loginUser);
+        return ResultUtils.success(true);
+    }
 }

src/main/java/edu/whut/smilepicturebackend/model/dto/picture/PictureEditByBatchRequest.java

@@ -0,0 +1,40 @@
+package edu.whut.smilepicturebackend.model.dto.picture;
+
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 图片批量编辑请求
+ */
+@Data
+public class PictureEditByBatchRequest implements Serializable {
+
+    /**
+     * 图片 id 列表
+     */
+    private List<Long> pictureIdList;
+
+    /**
+     * 空间 id
+     */
+    private Long spaceId;
+
+    /**
+     * 分类
+     */
+    private String category;
+
+    /**
+     * 标签
+     */
+    private List<String> tags;
+
+    /**
+     * 命名规则
+     */
+    private String nameRule;
+
+    private static final long serialVersionUID = 1L;
+}

src/main/java/edu/whut/smilepicturebackend/service/PictureService.java

@@ -135,4 +135,13 @@ public interface PictureService extends IService<Picture> {
      * @return
      */
     List<PictureVO> searchPictureByColor(Long spaceId, String picColor, User loginUser);
+
+    /**
+     * 批量编辑图片
+     *
+     * @param pictureEditByBatchRequest
+     * @param loginUser
+     */
+    void editPictureByBatch(PictureEditByBatchRequest pictureEditByBatchRequest, User loginUser);
+
 }

src/main/java/edu/whut/smilepicturebackend/service/impl/PictureServiceImpl.java

@@ -637,6 +637,70 @@ public class PictureServiceImpl extends ServiceImpl<PictureMapper, Picture>
                 .map(PictureVO::objToVo)
                 .collect(Collectors.toList());
     }
+
+    @Override
+    public void editPictureByBatch(PictureEditByBatchRequest pictureEditByBatchRequest, User loginUser) {
+        // 1. 获取和校验参数
+        List<Long> pictureIdList = pictureEditByBatchRequest.getPictureIdList();
+        Long spaceId = pictureEditByBatchRequest.getSpaceId();
+        String category = pictureEditByBatchRequest.getCategory();
+        List<String> tags = pictureEditByBatchRequest.getTags();
+        ThrowUtils.throwIf(CollUtil.isEmpty(pictureIdList), ErrorCode.PARAMS_ERROR);
+        ThrowUtils.throwIf(spaceId == null, ErrorCode.PARAMS_ERROR);
+        ThrowUtils.throwIf(loginUser == null, ErrorCode.NO_AUTH_ERROR);
+        // 2. 校验空间权限
+        Space space = spaceService.getById(spaceId);
+        ThrowUtils.throwIf(space == null, ErrorCode.NOT_FOUND_ERROR, "空间不存在");
+        if (!space.getUserId().equals(loginUser.getId())) {
+            throw new BusinessException(ErrorCode.NO_AUTH_ERROR, "没有空间访问权限");
+        }
+        // 3. 查询指定图片（仅选择需要的字段）
+        List<Picture> pictureList = this.lambdaQuery()
+                .select(Picture::getId, Picture::getSpaceId)
+                .eq(Picture::getSpaceId, spaceId)
+                .in(Picture::getId, pictureIdList)
+                .list();
+        if (pictureList.isEmpty()) {
+            return;
+        }
+        // 4. 更新分类和标签
+        pictureList.forEach(picture -> {
+            if (StrUtil.isNotBlank(category)) {
+                picture.setCategory(category);
+            }
+            if (CollUtil.isNotEmpty(tags)) {
+                picture.setTags(JSONUtil.toJsonStr(tags));
+            }
+        });
+        // 批量重命名
+        String nameRule = pictureEditByBatchRequest.getNameRule();
+        fillPictureWithNameRule(pictureList, nameRule);
+        // 5. 操作数据库进行批量更新
+        boolean result = this.updateBatchById(pictureList);
+        ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR, "批量编辑失败");
+    }
+
+    /**
+     * nameRule 格式：图片-{序号}  =>图片-1  图片-2 ...
+     *
+     * @param pictureList
+     * @param nameRule
+     */
+    private void fillPictureWithNameRule(List<Picture> pictureList, String nameRule) {
+        if (StrUtil.isBlank(nameRule) || CollUtil.isEmpty(pictureList)) {
+            return;
+        }
+        long count = 1;
+        try {
+            for (Picture picture : pictureList) {
+                String pictureName = nameRule.replaceAll("\\{序号}", String.valueOf(count++));
+                picture.setName(pictureName);
+            }
+        } catch (Exception e) {
+            log.error("名称解析错误", e);
+            throw new BusinessException(ErrorCode.OPERATION_ERROR, "名称解析错误");
+        }
+    }
 }