java编写学生信息查询程序

是考试作业，做一个连接数据库的查询程序。程序没错，但点查询后出现java.sql.SQLException: [Microsoft][ODBC 驱动程序管理器] 无效的游标状态的错误。高手帮忙，谢谢！部分代码：class RunDemand implements ActionListener { public void actionPerformed (ActionEvent e) { if(e.getSource() == demand) { try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");String ls = "select * from S where sno ="+snotf.getText();Connection con = DriverManager.getConnection(url, user, password);Statement sta = con.createStatement();ResultSet rs = sta.executeQuery(ls);sname1.setText(rs.getString("sname"));sex1.setText(rs.getString("sex"));birthday1.setText(rs.getString("birthday"));nation1.setText(rs.getString("nation"));place1.setText(rs.getString("place"));address1.setText(rs.getString("address"));post1.setText(rs.getString("post"));clname1.setText(rs.getString("clname"));dorm1.setText(rs.getString("dorm"));phone1.setText(rs.getString("phone"));email1.setText(rs.getString("email"));remark1.setText(rs.getString("remark"));}catch(SQLException sqle) { System.out.println(sqle.toString());}catch(Exception ex){ System.out.println(ex.toString());} } } } 收起