feature1.0.0:修正同步点赞记录到数据库的BUG

bnyer-services/bnyer-img/src/main/java/com/bnyer/img/service/impl/TiktokLikeServiceImpl.java

@@ -44,40 +44,42 @@ public class TiktokLikeServiceImpl implements TiktokLikeService {
         long startTime = System.currentTimeMillis();
         //拿缓存
         String redisKey = RedisKeyConstant.TIKTOK_USER_LIKE_KEY;
-        Cursor<Map.Entry<Object, Object>> like = redisService.getHashScan(redisKey);
-        List<TiktokLike> list = new ArrayList<>();
-        List<String> keyList = new ArrayList<>();
-        while (like.hasNext()){
-            Map.Entry<Object, Object> next = like.next();
-            String key = (String) next.getKey();
-            //分离出 userId，imgId
-            String[] split = key.split(":");
-            String userId = split[0];
-            Long userLongId = Long.parseLong(userId);
-            String imgId = split[1];
-            Long imgLongId = Long.parseLong(imgId);
-            //判断图片是否存在
-            TiktokImg img = tiktokImgMapper.selectById(imgLongId);
-            if(img == null){
-                //不存在则图片Id加入删除列表，遍历完删除
+        if(redisService.hasKey(redisKey)){
+            Cursor<Map.Entry<Object, Object>> like = redisService.getHashScan(redisKey);
+            List<TiktokLike> list = new ArrayList<>();
+            List<String> keyList = new ArrayList<>();
+            while (like.hasNext()){
+                Map.Entry<Object, Object> next = like.next();
+                String key = (String) next.getKey();
+                //分离出 userId，imgId
+                String[] split = key.split(":");
+                String userId = split[0];
+                Long userLongId = Long.parseLong(userId);
+                String imgId = split[1];
+                Long imgLongId = Long.parseLong(imgId);
+                //判断图片是否存在
+                TiktokImg img = tiktokImgMapper.selectById(imgLongId);
+                if(img == null){
+                    //不存在则图片Id加入删除列表，遍历完删除
+                    keyList.add(key);
+                    continue;
+                }
+                TiktokLike tiktokLike = new TiktokLike();
+                tiktokLike.setUserId(userLongId);
+                tiktokLike.setImgId(imgLongId);
+                tiktokLike.setIsShow("1");
+                tiktokLike.setSort(0);
+                tiktokLike.setCreateTime(new Date());
+                tiktokLike.setUpdateTime(new Date());
+                list.add(tiktokLike);
                 keyList.add(key);
-                continue;
             }
-            TiktokLike tiktokLike = new TiktokLike();
-            tiktokLike.setUserId(userLongId);
-            tiktokLike.setImgId(imgLongId);
-            tiktokLike.setIsShow("1");
-            tiktokLike.setSort(0);
-            tiktokLike.setCreateTime(new Date());
-            tiktokLike.setUpdateTime(new Date());
-            list.add(tiktokLike);
-            keyList.add(key);
-        }
-        //数据插入数据库并删除缓存
-        tiktokLikeMapper.insertBatch(list);
-        if(keyList.size() > 0){
-            for (String key : keyList) {
-                redisService.deleteHashKey(redisKey, key);
+            //数据插入数据库并删除缓存
+            tiktokLikeMapper.insertBatch(list);
+            if(keyList.size() > 0){
+                for (String key : keyList) {
+                    redisService.deleteHashKey(redisKey, key);
+                }
             }
         }
         log.info("==============redis同步点赞记录到db数据完成,耗时【{}】毫秒！===============",System.currentTimeMillis() - startTime);