Question

jdbc错误

Connection conn = ConnectionFactory.getConnection();
stmt.setInt(1, 158);
rs = stmt.executeQuery();
System.out.println(rs.findColumn("id"));
System.out.println(rs.getInt("id"));
at com.mysql.jdbc.ResultSetImpl.checkRowPos(ResultSetImpl.java:855)
at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2710)
at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2851)

Answer 1

你报什么错。。都封装了给这点看不出名堂啊，jdbc的配置也没看到

Answer 2

你都没把连接打开 conn.open();

追问

不是没打开
是没rs.next