无历史版本返回为空

src/com/engine/organization/service/impl/VersionManageServiceImpl.java

@@ -69,7 +69,7 @@ public class VersionManageServiceImpl extends Service implements VersionManageSe
 
     @Override
     public Map<String, Object> getVersion(ModuleTypeEnum moduleTypeEnum, Map<String, Object> params, User user) {
-        String operateName = user.getUsername();
+        String operateName = "";
         String id = (String) params.get("id");
         String version = (String) params.get("version");
         String operateTime = "";
@@ -164,10 +164,14 @@ public class VersionManageServiceImpl extends Service implements VersionManageSe
             default:
                 break;
         }
+
         resultMap.put("operateName", operateName);
         resultMap.put("operateTime", operateTime);
         resultMap.put("versions", versions);
         resultMap.put("datas", datas);
+        if (versions.size() < 1) {
+            return null;
+        }
         return resultMap;
     }