scoredialog.java~17~

基于JB的网络数据库系统开发

package studentmanage;

import java.awt.*;
import javax.swing.*;

import java.sql.*;
import java.awt.event.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class ScoreDialog extends JDialog {
  Connection con=null;
  Statement stmt=null;
  ResultSet rs=null;
  int  courseid=0;
  int semesterid=0;
  String course="";
  String semester="";

  JPanel panel1 = new JPanel();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JLabel jLabel4 = new JLabel();
  JComboBox jComboBox1 = new JComboBox();
  JTextField jTextField1 = new JTextField();
  JComboBox jComboBox2 = new JComboBox();
  JTextField jTextField2 = new JTextField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();

  public ScoreDialog(Frame frame, String title, boolean modal) {
    super(frame, title, modal);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  public ScoreDialog() {
    this(null, "", false);
  }
  private void jbInit() throws Exception {
    panel1.setLayout(null);
    this.getContentPane().setLayout(null);
    panel1.setBounds(new Rectangle(5, 2, 511, 300));
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setToolTipText("");
    jLabel1.setText("课程号");
    jLabel1.setBounds(new Rectangle(14, 136, 55, 20));
    jLabel2.setBounds(new Rectangle(14, 71, 55, 20));
    jLabel2.setText("学期号");
    jLabel2.setToolTipText("");
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel3.setToolTipText("");
    jLabel3.setText("学期名称");
    jLabel3.setBounds(new Rectangle(218, 69, 81, 20));
    jLabel4.setBounds(new Rectangle(218, 136, 81, 20));
    jLabel4.setText("课程名称");
    jLabel4.setToolTipText("");
    jLabel4.setFont(new java.awt.Font("Dialog", 0, 16));
    jComboBox1.setFont(new java.awt.Font("Dialog", 0, 16));
    jComboBox1.setBounds(new Rectangle(84, 64, 122, 30));
    jTextField1.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField1.setEditable(false);
    jTextField1.setText("");
    jTextField1.setBounds(new Rectangle(291, 65, 187, 30));
    jComboBox2.setBounds(new Rectangle(84, 131, 122, 30));
    jComboBox2.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField2.setBounds(new Rectangle(291, 131, 187, 30));
    jTextField2.setText("");
    jTextField2.setEditable(false);
    jTextField2.setFont(new java.awt.Font("Dialog", 0, 16));

    String sql1="select * from semester";
    String sql2="select * from course";
    DbConnect.loadClass();
    con = DbConnect.makeConnect("127.0.0.1", "StudentScore", "sa", "");
    stmt = DbConnect.makeStatement(con);
    rs = DbConnect.makeResultSet(stmt, sql1);
    try{
      rs.next();
      jComboBox1.addItem(String.valueOf(rs.getInt("semesterid")));
     jTextField1.setText(rs.getString("semestername"));
      while(rs.next()){
        jComboBox1.addItem(String.valueOf(rs.getInt("semesterid")));
      }
      DbConnect.close(rs);
      rs=DbConnect.makeResultSet(stmt, sql2);
      rs.next();
      jComboBox2.addItem(String.valueOf(rs.getInt("courseid")));
      jTextField2.setText(rs.getString("coursename"));
      while(rs.next()){
        jComboBox2.addItem(String.valueOf(rs.getInt("courseid")));
      }
      DbConnect.close(rs);
    }catch(SQLException e){
      System.out.print("数据访问出错");
    }

    jComboBox1.addActionListener(new ScoreDialog_jComboBox1_actionAdapter(this));
    jComboBox2.addActionListener(new ScoreDialog_jComboBox2_actionAdapter(this));

    jButton1.setBounds(new Rectangle(125, 202, 85, 40));
    jButton1.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton1.setToolTipText("");
    jButton1.setText("确定");
    jButton2.setText("取消");
    jButton2.setToolTipText("");
    jButton2.setMargin(new Insets(2, 14, 2, 14));
    jButton2.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton2.setBounds(new Rectangle(285, 202, 85, 40));
    panel1.add(jComboBox1, null);
    panel1.add(jLabel3, null);
    panel1.add(jTextField1, null);
    panel1.add(jComboBox2, null);
    panel1.add(jLabel4, null);
    panel1.add(jTextField2, null);
    panel1.add(jLabel2, null);
    panel1.add(jLabel1, null);
    panel1.add(jButton1, null);
    panel1.add(jButton2, null);
    this.getContentPane().add(panel1, null);
  }

  void jComboBox1_actionPerformed(ActionEvent e) {
    int num=Integer.parseInt(jComboBox1.getSelectedItem().toString());
    String sql="select * from semester where semesterid="+num;
    rs = DbConnect.makeResultSet(stmt, sql);
    try{
      rs.next();
      jTextField1.setText(rs.getString("semestername"));
    }catch(SQLException e1){
      e1.printStackTrace();
      System.out.print("数据访问出错");
    }
    DbConnect.close(rs);
  }

  void jComboBox2_actionPerformed(ActionEvent e) {
    int num=Integer.parseInt(jComboBox2.getSelectedItem().toString());
    String sql="select * from course where courseid="+num;
    rs = DbConnect.makeResultSet(stmt, sql);
    try{
      rs.next();
      jTextField2.setText(rs.getString("coursename"));
    }catch(SQLException e1){
      e1.printStackTrace();
      System.out.print("数据访问出错");
    }
    DbConnect.close(rs);
  }
}

class ScoreDialog_jComboBox1_actionAdapter implements java.awt.event.ActionListener {
  ScoreDialog adaptee;

  ScoreDialog_jComboBox1_actionAdapter(ScoreDialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jComboBox1_actionPerformed(e);
  }
}

class ScoreDialog_jComboBox2_actionAdapter implements java.awt.event.ActionListener {
  ScoreDialog adaptee;

  ScoreDialog_jComboBox2_actionAdapter(ScoreDialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jComboBox2_actionPerformed(e);
  }
}