修复新增品名代码报错问题

src/main/java/com/jeeplus/modules/warehouse/materialtype/service/MaterialTypeService.java

@@ -35,14 +35,14 @@ public class MaterialTypeService extends TreeService<MaterialTypeMapper, Materia
 	
 	@Transactional(readOnly = false)
 	public void save(MaterialType materialType) {
-		String [] parentIdsArr = materialType.getParentIds().split(",");
-		if (parentIdsArr.length >= 2) {
-			materialType.setLast(1);
-		} else {
-			materialType.setLast(0);
+		if (null != materialType.getParentIds()) {
+			String [] parentIdsArr = materialType.getParentIds().split(",");
+			if (parentIdsArr.length >= 2) {
+				materialType.setLast(1);
+			} else {
+				materialType.setLast(0);
+			}
 		}
-
-
 		super.save(materialType);
 	}