fix parsing int

src/main/java/com/zzsn/knowbase/service/impl/KnowledgeServiceImpl.java

@@ -439,7 +439,7 @@ class KnowledgeServiceImpl implements IKnowledgeService {
 
             knowledgeList.add(KnowledgeVO.builder()
                     .id((String) one.get("id"))
-                    .importData((int) one.get("importData"))
+                    .importData(Integer.valueOf(one.get("importData").toString()))
                     .title((String) one.get("title"))
                     .author((String) one.get("author"))
                     .score((int) one.get("score"))