8.11 缓存优化bug解决

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

@@ -215,6 +215,7 @@ public class PictureController {
 //    /**
 //     * 分页获取图片列表（封装类，脱敏）,普通用户使用，且不能看到未过审的图片
 //     */
+//    @Deprecated
 //    @PostMapping("/list/page/vo")
 //    public BaseResponse<Page<PictureVO>> listPictureVOByPage(@RequestBody PictureQueryRequest pictureQueryRequest,
 //                                                             HttpServletRequest request) {
@@ -251,7 +252,6 @@ public class PictureController {
     /**
      * 分页获取图片列表（封装类，有缓存）
      */
-    @Deprecated
     @PostMapping("/list/page/vo")
     public BaseResponse<Page<PictureVO>> listPictureVOByPageWithCache(
             @RequestBody PictureQueryRequest pictureQueryRequest,

src/main/java/edu/whut/smilepicturebackend/manager/cache/MyCacheManager.java

@@ -36,7 +36,6 @@ public class MyCacheManager {
      */
     private final StringRedisTemplate stringRedisTemplate;
 
-    // ====== 新增：强类型版本 ======
     public <T> T getFromCacheOrDatabase(
             String cacheKey,
             TypeReference<T> typeRef,

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

@@ -6,6 +6,7 @@ import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.ObjUtil;
 import cn.hutool.core.util.RandomUtil;
 import cn.hutool.core.util.StrUtil;
+import cn.hutool.crypto.digest.DigestUtil;
 import cn.hutool.json.JSONObject;
 import cn.hutool.json.JSONUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
@@ -618,12 +619,21 @@ public class PictureServiceImpl extends ServiceImpl<PictureMapper, Picture>
             ThrowUtils.throwIf(!hasPermission, ErrorCode.NO_AUTH_ERROR);
         }
 
+        // 把查询条件序列化成 JSON
+        String queryJson = JSONUtil.toJsonStr(Map.of(
+                "spaceId", spaceId == null ? "public" : spaceId,
+                "category", queryRequest.getCategory(),
+                "tags", queryRequest.getTags(),
+                "searchText", queryRequest.getSearchText(),
+                "current", current,
+                "size", size
+        ));
 
-        String cacheKey = "smilepicture:listPictureVOByPage:spaceId:" + (spaceId == null ? "public" : spaceId) +
-                ":current:" + current +
-                ":size:" + size;
+        // 计算 MD5 作为哈希（也可用 SHA256）
+        String hash = DigestUtil.md5Hex(queryJson);
 
-//        String cacheKey = "smilepicture:list:v" + ver + ":" + hash;
+        // 拼接缓存 key
+        String cacheKey = "smilepicture:listPictureVOByPage:v1:" + hash;
         // 随机过期：300–600s
         int expire = 300 + RandomUtil.randomInt(0, 300);
 

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

@@ -11,6 +11,7 @@ import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import edu.whut.smilepicturebackend.exception.BusinessException;
 import edu.whut.smilepicturebackend.exception.ErrorCode;
 import edu.whut.smilepicturebackend.exception.ThrowUtils;
+import edu.whut.smilepicturebackend.manager.sharding.DynamicShardingManager;
 import edu.whut.smilepicturebackend.mapper.SpaceMapper;
 
 import edu.whut.smilepicturebackend.model.dto.space.SpaceAddRequest;