为缓存方法添加条件

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

@@ -13,7 +13,7 @@ public class BoardConfigServiceImpl implements BoardConfigService{
 	@Autowired
 	private BoardConfigDao boardConfigDao;
 	
-	@Cacheable(value="boardCache", key="'board_config_'+#boardId")
+	@Cacheable(value="boardCache", key="'board_config_'+#boardId", unless="#result==null")
 	@Override
 	public Optional<BoardConfig> getByBoardId(long boardId) { //[BC]B2
 		return boardConfigDao.findOneByBoard(boardId);

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

@@ -13,7 +13,7 @@ public class TopicConfigServiceImpl implements TopicConfigService{
 	@Autowired
 	private TopicConfigDao topicConfigDao;
 	
-	@Cacheable(value="topicCache", key="'topic_config_'+#topicId")
+	@Cacheable(value="topicCache", key="'topic_config_'+#topicId", unless="#result==null")
 	@Override
 	public Optional<TopicConfig> getByTopicId(long topicId) { //[TC]T2
 		return topicConfigDao.findOneByTopic(topicId);

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

@@ -25,7 +25,7 @@ public class ForumScoreRoleServiceImpl implements ForumScoreRoleService{
 		return forumScoreRoleDao.findAllUsed();
 	}
 	
-	@Cacheable(value = "memberCache", key="'score_'+#id")
+	@Cacheable(value = "memberCache", key="'score_'+#id", unless="#result==null")
 	@Override
 	public Optional<ForumScoreRole> get(int id) { //[MC]M4
 		if(id>0){