java.lang.ArrarIndexOutOfBoundsException :11

Question

我有以下代码，可以正常编译，但是当它运行时，它会抛出 java.lang.ArrarIndexOutOfBoundsException:11 异常，如果您能帮助解决问题，那将是一个很大的帮助。

代码是:

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.sql.*;

public class Pro implements ActionListener

{

    JTextField t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13;
    JButton b1,b2;
     public Pro()
        {
            JFrame f = new JFrame();

            JLabel l1 = new JLabel("SNo.");
            JLabel l2 = new JLabel("OPANo");
            JLabel l3 = new JLabel("CollegeName");
            JLabel l4 = new JLabel("ProjectName");
            JLabel l5 = new JLabel("SanctionNoDate");
            JLabel l6 = new JLabel("TotalOutlayInLakhs)");
            JLabel l7 = new JLabel("ProjectDuration");
            JLabel l8 = new JLabel("AmountReleased");
            JLabel l9 = new JLabel("BalanceToBeReleased");
            JLabel l10 = new JLabel("PRSGsHeld");
            JLabel l11 = new JLabel("NextPRSGDue");
            JLabel l12 = new JLabel("CompletionMonth");
            JLabel l13 = new JLabel("Status");

            t1 = new JTextField(20);
            t1.setEnabled(false);
            t2 = new JTextField(20);
            t3 = new JTextField(20);
            t4 = new JTextField(20);
            t5 = new JTextField(20);
            t6 = new JTextField(20);
            t7 = new JTextField(20);
            t8 = new JTextField(20);
            t9 = new JTextField(20);
            t10 = new JTextField(20);
            t11 = new JTextField(20);
            t12 = new JTextField(20);
            t13 = new JTextField(20);

            b1 = new JButton("Reset");
            b2 = new JButton("Insert");

            b1.addActionListener(this);
            b2.addActionListener(this);

            JPanel p1 = new JPanel();
            p1.add(l1);p1.add(t1);
            p1.add(l2);p1.add(t2);
            p1.add(l3);p1.add(t3);
            p1.add(l4);p1.add(t4);
            p1.add(l5);p1.add(t5);
            p1.add(l6);p1.add(t6);
            p1.add(l7);p1.add(t7);
            p1.add(l8);p1.add(t8);
            p1.add(l9);p1.add(t9);
            p1.add(l10);p1.add(t10);
            p1.add(l11);p1.add(t11);
            p1.add(l12);p1.add(t12);
            p1.add(l13);p1.add(t13);
            p1.add(b1);p1.add(b2);

            p1.setLayout(new GridLayout(14,2));

            f.add(p1);
                    f.pack();
                    f.setResizable(false);
                    f.setVisible(true);
            }
                public int getMaxSNO()
                {
                    int sno=0;
                    String path ="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=doit.mdb";
                            try
                            {
                                Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                                Connection con = DriverManager.getConnection(path);

                                Statement stat = con.createStatement();
                                ResultSet rs = stat.executeQuery("SELECT max(Sno) from project");
                                if(rs.next())
                                {
                                    sno=rs.getInt(1);
                                }
                            }
        catch(Exception e)
                {
                    JOptionPane.showMessageDialog(null, e.toString());
                }
                return sno;
                }
        public boolean isAlpha(String str)
            {
                boolean result = false;

                for(int i=0;i!=str.length();i++)
                {
                    int ch = str.charAt(i);

                    if((ch>=65 && ch<=91) || (ch>=97 && ch<=122))
                    {
                        result = true;
                    }
                    else
                    {
                        result = false;
                        break;
                    }
                }
    return result;
            }
public void actionPerformed(ActionEvent e)
    {
        if(e.getSource()==b1)
        {
            t1.setText("");
            t2.setText("");
            t3.setText("");
            t4.setText("");
            t5.setText("");
            t6.setText("");
            t7.setText("");
            t8.setText("");
            t9.setText("");
            t10.setText("");
            t11.setText("");
            t12.setText("");
            t13.setText("");
        }
    else if(e.getSource()==b2)
    {
        String name = t3.getText();
                    boolean b1 = isAlpha(name);

                    if(b1)
                    {
                        try
                        {
                    String path ="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=doit.mdb";

                            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                            Connection con = DriverManager.getConnection(path);

                            PreparedStatement ps = con.prepareStatement("INSERT into project(OPANo, CollegeName, ProjectName, SanctionNoDate, TotalOutlayInLakhs, ProjectDuration, AmountReleased, BalanceToBeReleased, PRSGsHeld, NextPRSGDue, CompletionMonth, Status) VALUES(?,?,?,?,?,?,?,?,?,?,?)");



                            ps.setInt(1,Integer.parseInt(t2.getText()));
                            ps.setString(2, t3.getText());
                            ps.setString(3, t4.getText());
                            ps.setString(4, t5.getText());
                            ps.setString(5, t6.getText());
                            ps.setString(6, t7.getText());
                            ps.setString(7, t8.getText());
                            ps.setString(8, t9.getText());
                            ps.setString(9, t10.getText());
                            ps.setString(10, t11.getText());
                            ps.setString(11, t12.getText());
                            ps.setString(12, t13.getText());


                            int rows = ps.executeUpdate();
                            if(rows>0)
                            {
                                con.close();
                                int sno=getMaxSNO();

                                t1.setText(String.valueOf(sno));
                                JOptionPane.showMessageDialog(null, "Data Inserted");
                            }
                            else
                            {
                                JOptionPane.showMessageDialog(null, "Failed");
                            }
                            con.close();
                        }
                        catch(Exception ae)
                                        {
                                            JOptionPane.showMessageDialog(null, ae.toString());
                                        }
                                    }
                                    else
                                    {
                                        JOptionPane.showMessageDialog(null, "Invalid Name");
                                    }
                                }
                            }


                            public static void main(String args[])
                            {
                                Pro obj = new Pro();
                            }

}

Answer 1

我怀疑这就是问题所在:

// Reformatted
PreparedStatement ps = con.prepareStatement(
    "INSERT into project(OPANo, CollegeName, ProjectName, SanctionNoDate, " + 
    "TotalOutlayInLakhs, ProjectDuration, AmountReleased, " + 
    "BalanceToBeReleased, PRSGsHeld, NextPRSGDue, CompletionMonth, Status) " + 
    "VALUES(?,?,?,?,?,?,?,?,?,?,?)");

计算问号，然后计算您尝试指定的值的数量...

(然后请注意，您正在调用 ps.setString(12, t13.getText()) - 确认您确实意味着有 12 个参数，而不是 11 个...)