使用PreparedStatement这个类,
final String delete_sql = "delete from xxl_yw_user where u_coding in (?,?)";
PreparedStatement ps = conn.prepareStatement(delete_sql);
ps.setString(1, "71101111");
ps.setString(2, "71407999");
ps.executeUpdate();
ps.close();
先把代码贴出来吧
看你的代码,不是sql动态参数拼接多了\,是你list转string时候多了\