优化交易记录

src/main/java/com/izouma/nineth/service/AssetService.java

@@ -466,8 +466,8 @@ public class AssetService {
         });
 
         Object operation1 = query.get("operation");
-        if (operation1!=null){
-            String operation = (String) operation1;
+        if (ObjectUtils.isNotEmpty(operation1)){
+            String operation =  operation1.toString();
             List<UserHistory> content = map.getContent();
             for (int i = 0; i < content.size(); i++) {
                 if (!content.get(i).getDescription().equals(operation)){