为缓存方法添加条件

core.impl/src/main/java/com/apobates/forum/core/impl/service/BoardConfigServiceImpl.java

@@ -21,7 +21,7 @@ public class BoardConfigServiceImpl implements BoardConfigService{
     private BoardConfigDao boardConfigDao;
     private final static Logger logger = LoggerFactory.getLogger(BoardConfigServiceImpl.class);
     
-    @Cacheable(value="boardCache", key="'board_config_'+#boardId")
+    @Cacheable(value="boardCache", key="'board_config_'+#boardId", unless="#result == null")
     @Override
     public Optional<BoardConfig> getByBoardId(long boardId) {
         return boardConfigDao.findOneByBoard(boardId);

core.impl/src/main/java/com/apobates/forum/core/impl/service/TopicConfigServiceImpl.java

@@ -21,7 +21,7 @@ public class TopicConfigServiceImpl implements TopicConfigService{
     private TopicConfigDao topicConfigDao;
     private final static Logger logger = LoggerFactory.getLogger(TopicConfigServiceImpl.class);
     
-    @Cacheable(value="topicCache", key="'topic_config_'+#topicId")
+    @Cacheable(value="topicCache", key="'topic_config_'+#topicId", unless="#result == null")
     @Override
     public Optional<TopicConfig> getByTopicId(long topicId) {
         return topicConfigDao.findOneByTopic(topicId);

member.impl/src/main/java/com/apobates/forum/member/impl/service/ForumScoreRoleServiceImpl.java

@@ -49,7 +49,7 @@ public class ForumScoreRoleServiceImpl implements ForumScoreRoleService{
         return Optional.empty();
     }
     
-    @Cacheable(value = "memberCache", key="'score_'+#id")
+    @Cacheable(value = "memberCache", key="'score_'+#id", unless="#result == null")
     @Override
     public Optional<ForumScoreRole> get(int id) {
         if (id > 0) {