classesinformationquery.java~21~

学生信息管理系统,包括成绩查询,成绩排序,用ACCESS做数据库连接

package Chapter1;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.Rectangle;
import java.sql.*;
public class ClassesInformationQuery extends JFrame implements ActionListener
{
   public static final int WIDTH=400;
   public static final int HEIGHT=400;
  JLabel jLabel1 = new JLabel();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JTextField jTextField1 = new JTextField(7);
  JButton jButton3 = new JButton();

  public ClassesInformationQuery()
   {
       setTitle("课程信息查询");

       setSize(WIDTH,HEIGHT);
       Container contentPane=getContentPane();
       contentPane.setBackground(Color.green);
       contentPane.setLayout(new FlowLayout());
    try
    {
      jbInit();
    }
    catch(Exception e)
    {
      e.printStackTrace();
    }
   }
  public void actionPerformed(ActionEvent e)
  {
      String [] columnNames={"课程号","课序号","课程名","授课教师","上课时间","上课地点","学分","课程性质","考试形式","备注"};
      Object [][] rowData=new Object[20][10];
      int count=0;
     if(e.getActionCommand().equals("开始查询"))
     {
       try
       {
         String url="jdbc:odbc:MySecondAccess";
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
         Connection con=DriverManager.getConnection(url,"","");
         Statement stmt=con.createStatement();
         String  SQLOrder="SELECT * FROM ClassesInformation WHERE 课程号='"+jTextField1.getText()+"'";
         ResultSet resultSet=stmt.executeQuery(SQLOrder);
           if(resultSet.next())
           {
              rowData [count][0] = resultSet.getString(1);
              rowData [count][1] = resultSet.getString(2);
              rowData [count][2] = resultSet.getString(3);
              rowData [count][3] = resultSet.getString(4);
              rowData [count][4] = resultSet.getString(5);
              rowData [count][5] = resultSet.getString(6);
              rowData [count][6] = resultSet.getString(7);
              rowData [count][7] = resultSet.getString(8);
              rowData [count][8] = resultSet.getString(9);
              rowData [count][9] = resultSet.getString(10);
              count++;
           }
           else
             JOptionPane.showMessageDialog(null,"对不起,不存在此课程号的课程!","张呈刚提醒您.......",JOptionPane.WARNING_MESSAGE);
         stmt.close();
         con.close();
       }
       catch(Exception ex)
       {
            JOptionPane.showMessageDialog(null,ex.getMessage(),"警告信息",JOptionPane.WARNING_MESSAGE);
            JOptionPane.showMessageDialog(null,ex.getStackTrace(),"警告信息",JOptionPane.WARNING_MESSAGE);
       }
        Container container=getContentPane();                  //获取窗口容器
        JTable table=new JTable(rowData,columnNames);         //实例化表格
        table.getColumn("学分").setMaxWidth(35);               //设置行宽
        container.add(new JScrollPane(table),BorderLayout.CENTER); //增加组件
        setSize(650,450);
        setBackground(Color.green);
        setVisible(true);    //设置窗口可视
       // setDefaultCloseDperation(JFrame.EXIT_ON_CLOSE);
     }
    else if(e.getActionCommand().equals("显示所有课程信息"))
    {
      try
       {
         String url="jdbc:odbc:MySecondAccess";
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
         Connection con=DriverManager.getConnection(url,"","");
         Statement stmt=con.createStatement();
         String  SQLOrder="SELECT * FROM ClassesInformation ";
         ResultSet resultSet=stmt.executeQuery(SQLOrder);
         while(resultSet.next())
         {
           rowData [count][0] = resultSet.getString(1);
           rowData [count][1] = resultSet.getString(2);
           rowData [count][2] = resultSet.getString(3);
           rowData [count][3] = resultSet.getString(4);
           rowData [count][4] = resultSet.getString(5);
           rowData [count][5] = resultSet.getString(6);
           rowData [count][6] = resultSet.getString(7);
           rowData [count][7] = resultSet.getString(8);
           rowData [count][8] = resultSet.getString(9);
           rowData [count][9] = resultSet.getString(10);
           count++;
         }
         stmt.close();
         con.close();
       }
       catch(Exception ex)
       {
            JOptionPane.showMessageDialog(null,ex.getMessage(),"警告信息",JOptionPane.WARNING_MESSAGE);
            JOptionPane.showMessageDialog(null,ex.getStackTrace(),"警告信息",JOptionPane.WARNING_MESSAGE);
       }
        Container container=getContentPane();                  //获取窗口容器
        JTable table=new JTable(rowData,columnNames);         //实例化表格
        table.getColumn("学分").setMaxWidth(35);               //设置行宽
        container.add(new JScrollPane(table),BorderLayout.CENTER); //增加组件
        setSize(650,450);
        setBackground(Color.green);
        setVisible(true);    //设置窗口可视
       // setDefaultCloseDperation(JFrame.EXIT_ON_CLOSE);
    }
    else if(e.getActionCommand().equals("返回"))
    {
           this.setVisible(false);
           ManagerInterface n1= new ManagerInterface();
           StudentInterface n2=new  StudentInterface();
           if(Login.jComboBox1.getSelectedIndex()==0)
                 {  n1.setVisible(true);  n2.setVisible(false);}
           else if(Login.jComboBox1.getSelectedIndex()==1)
                 {  n2.setVisible(true);  n1.setVisible(false); }
    }
  }
  public static void main(String[] args)
  {
       ClassesInformationQuery  n = new ClassesInformationQuery();
        n.setVisible(true);
  }
  private void jbInit() throws Exception
  {
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setText("请输入您所要查询的课程号:");
    jLabel1.setBounds(new Rectangle(27, 35, 236, 58));
    this.getContentPane().setLayout(new FlowLayout());
    jButton1.setBounds(new Rectangle(25, 84, 102, 31));
    jButton1.setText("开始查询");
    jButton2.setBounds(new Rectangle(231, 83, 146, 31));
    jButton2.setText("显示所有课程信息");
    jTextField1.setText("");
    jTextField1.setBounds(new Rectangle(263, 49, 104, 26));
    jButton3.setBounds(new Rectangle(138, 302, 92, 25));
    jButton3.setText("返回");
    this.getContentPane().add(jLabel1, -1);
    this.getContentPane().add(jTextField1, -1);
    this.getContentPane().add(jButton1, -1);
    this.getContentPane().add(jButton2, -1);
    this.getContentPane().add(jButton3);
    jButton1.addActionListener(this);
    jButton2.addActionListener(this);
    jButton3.addActionListener(this);
  }


}