新增vpi接口

dating-agency-mall-server/src/main/java/com/qniao/dam/infrastructure/persistent/repository/impl/ActivityRepositoryImpl.java

@@ -33,7 +33,7 @@ public class ActivityRepositoryImpl implements ActivityRepository {
 
     @Override
     public Long save(Activity entity) {
-        if(entity.getId() != null){
+        if(entity.getId() == null){
             entity.setId(snowFlake.nextId());
             activityDao.insert(entity);
             if(entity.getActivityProductList() != null){