如何将 Jtable 数据插入 oracle 11g 数据库 [关闭]

Question

These are the exceptions.我们创建了一个jtable，通过add按钮将数据添加到表中。通过提交按钮发送到数据库。但是单击提交按钮时会产生异常。谁能告诉我在哪里代码出错了？？

btnSubmit.addActionListener(new ActionListener(){
        @Override
        public void actionPerformed(ActionEvent e) {

    try {

        int count = table.getRowCount();
                        String driver = "oracle.jdbc.driver.OracleDriver";
        Class.forName(driver);
        Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl","scott", "tiger");
        conn.setAutoCommit(false);
        PreparedStatement pst = conn.prepareStatement("Insert into students(ROLL_NO,NAME,MID1,MID2,Marksinwords) values (?,?,?,?,?)");

        for(int row = 0; row<count; row++)
        {
             String roll = (String)table.getValueAt(row, 0);
             String name = (String)table.getValueAt(row, 1);


                             String MARKS1 = (String)tableModel.getValueAt(row, 2);
            String MARKS2 = (String)table.getValueAt(row, 3);

             String marksinwords = (String)table.getValueAt(row, 4);

             pst.setString(1, roll);
              pst.executeUpdate(roll);
                 pst.setString(2, name);
              pst.executeUpdate(name);
             pst.setString(3,MARKS1 );
              pst.executeUpdate(MARKS1);
             pst.setString(4,MARKS2 );
              pst.executeUpdate(MARKS2);

                 pst.setString(5, marksinwords);

               pst.executeUpdate(marksinwords);
                pst.addBatch();
        }
        pst.executeBatch();
        conn.commit();

            } catch (Exception ex) {

                Logger.getLogger(FacultyTableSubmit.class.getName()).log(Level.SEVERE, null, ex);
            }

    }

});

Answer 1

你的 PreparedStatement 序列对我来说有点奇怪，更新它时不需要提供值，你做了两件事，将它添加到数据库，然后再次添加到批处理中。

试试这样：

    for(int row = 0; row<count; row++)
    {
        String roll = (String)table.getValueAt(row, 0);
        String name = (String)table.getValueAt(row, 1);
        String MARKS1 = (String)tableModel.getValueAt(row, 2);
        String MARKS2 = (String)table.getValueAt(row, 3);
        String marksinwords = (String)table.getValueAt(row, 4);

        pst.setString(1, roll);;
        pst.setString(2, name);
        pst.setString(3,MARKS1 );
        pst.setString(4,MARKS2 );
        pst.setString(5, marksinwords);
        pst.addBatch();
    }
    pst.executeBatch();
    conn.commit();