fix compile bug

@@ -22,8 +22,9 @@ public class BrandVectorBOLogicService {
             String [] parts = vector.split(split);
             List<Double> results = new ArrayList<>();
             for (String part: parts){
-                results.add(Double.parseDouble(part));
+                results.add(Double.parseDouble(part.trim()));
             }
+            return results;
         }catch (Exception e){
             logger.error(e.getMessage(), e);
             return new ArrayList<>();