/**
  * 按条件删除数据
  *
  * @param dbManager DB管理器
  * @param conditions 删除条件
  * @throws Exception
  */
 public void deleteByConditions(DBManager dbManager, String conditions) throws Exception {
   DBLwProrate dbLwProrate = new DBLwProrate(dbManager);
   // 按条件删除记录
   dbLwProrate.deleteByConditions(conditions);
 }