scoreupdatepanel.java

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 ScoreUpdatePanel extends JPanel {
  Connection con=null;
  Statement stmt = null;
  ResultSet rs = null;
  int courseid = 0;
  int semesterid = 0;
  String coursename = "";
  String semestername = "";
  MainFrame f;

  JLabel jLabel4 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel1 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JLabel jLabel3 = new JLabel();
  JTextField jTextField2 = new JTextField();
  JTextField jTextField3 = new JTextField();
  JTextField jTextField4 = new JTextField();
  JLabel jLabel5 = new JLabel();
  JLabel jLabel6 = new JLabel();
  JTextField jTextField5 = new JTextField();
  JComboBox jComboBox1 = new JComboBox();
  JLabel jLabel7 = new JLabel();
  JTextField jTextField6 = new JTextField();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();

  public ScoreUpdatePanel(MainFrame f,int semesterid,int courseid,String semestername,String coursename) {
    try {
      this.f=f;
      this.semesterid=semesterid;
      this.semestername=semestername;
      this.courseid=courseid;
      this.coursename=coursename;
      jbInit();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
  void jbInit() throws Exception {
    jLabel3.setBounds(new Rectangle(161, 21, 81, 20));
    jLabel3.setText("学期名称");
    jLabel3.setToolTipText("");
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField1.setBounds(new Rectangle(63, 21, 92, 30));
    jTextField1.setText(String.valueOf(this.semesterid));
    jTextField1.setEditable(false);
    jTextField1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setBounds(new Rectangle(8, 65, 55, 20));
    jLabel1.setText("课程号");
    jLabel1.setToolTipText("");
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setToolTipText("");
    jLabel2.setText("学期号");
    jLabel2.setBounds(new Rectangle(8, 21, 55, 20));
    jLabel4.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel4.setToolTipText("");
    jLabel4.setText("课程名称");
    jLabel4.setBounds(new Rectangle(161, 65, 81, 20));
    this.setLayout(null);
    jTextField2.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField2.setEditable(false);
    jTextField2.setText(this.semestername);
    jTextField2.setBounds(new Rectangle(238, 21, 152, 30));
    jTextField3.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField3.setEditable(false);
    jTextField3.setText(String.valueOf(this.courseid));
    jTextField3.setBounds(new Rectangle(63, 65, 92, 30));
    jTextField4.setBounds(new Rectangle(238, 65, 152, 30));
    jTextField4.setText(this.coursename);
    jTextField4.setEditable(false);
    jTextField4.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel5.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel5.setToolTipText(this.coursename);
    jLabel5.setText("学    号");
    jLabel5.setBounds(new Rectangle(8, 112, 55, 20));
    jLabel6.setBounds(new Rectangle(161, 113, 81, 20));
    jLabel6.setText("学生姓名");
    jLabel6.setToolTipText("");
    jLabel6.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField5.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField5.setEditable(false);
    jTextField5.setText("");
    jTextField5.setBounds(new Rectangle(238, 108, 152, 30));
    jComboBox1.setBounds(new Rectangle(63, 105, 92, 30));
    jLabel7.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel7.setToolTipText("");
    jLabel7.setText("课程成绩");
    jLabel7.setBounds(new Rectangle(159, 159, 81, 20));
    jTextField6.setBounds(new Rectangle(239, 152, 152, 30));
    jTextField6.setText("");
    jTextField6.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField6.setEditable(true);
    jButton1.setBounds(new Rectangle(79, 210, 72, 34));
    jButton1.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton1.setText("修改");
    jButton1.addActionListener(new ScoreUpdatePanel_jButton1_actionAdapter(this));
    jButton2.setText("退出");
    jButton2.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton2.setBounds(new Rectangle(234, 208, 72, 34));

    String sql="select * from coursenameview where courseid="+this.courseid+" and semesterid="+this.semesterid;
    DbConnect.loadClass();
    con = DbConnect.makeConnect("127.0.0.1", "StudentScore", "sa", "");
    stmt = DbConnect.makeStatement(con);
    rs = DbConnect.makeResultSet(stmt, sql);
    try{
      if(rs.next()){
        jComboBox1.addItem(rs.getString("studentid"));
        jTextField5.setText(rs.getString("name"));
        jTextField6.setText(String.valueOf(rs.getInt("coursescore")));
      }
      while(rs.next()){
        jComboBox1.addItem(rs.getString("studentid"));
      }
      DbConnect.close(rs);
    }catch(SQLException e){
      System.out.print("数据访问出错");
    }
    jComboBox1.addActionListener(new ScoreUpdatePanel_jComboBox1_actionAdapter(this));

    //jComboBox1.addActionListener(new ScoreDialog_jComboBox1_actionAdapter(this));

    this.add(jTextField1, null);
    this.add(jLabel3, null);
    this.add(jLabel2, null);
    this.add(jTextField2, null);
    this.add(jLabel1, null);
    this.add(jLabel4, null);
    this.add(jTextField3, null);
    this.add(jTextField4, null);
    this.add(jLabel6, null);
    this.add(jLabel5, null);
    this.add(jComboBox1, null);
    this.add(jTextField5, null);
    this.add(jLabel7, null);
    this.add(jTextField6, null);
    this.add(jButton1, null);
    this.add(jButton2, null);
  }

  void jComboBox1_actionPerformed(ActionEvent e) {
    String studentid=jComboBox1.getSelectedItem().toString();
    String sql="select * from coursenameview where courseid="+this.courseid+" and semesterid="+this.semesterid +" and studentid='"+studentid+"'";
    rs = DbConnect.makeResultSet(stmt, sql);
    try{
      rs.next();
      jTextField5.setText(rs.getString("name"));
      jTextField6.setText(String.valueOf(rs.getInt("coursescore")));
    }catch(SQLException e1){
      System.out.print("数据访问出错");
    }
    DbConnect.close(rs);

  }

  void jButton1_actionPerformed(ActionEvent e) {
    int coursescore=Integer.parseInt(jTextField6.getText().trim());
    String studentid=jComboBox1.getSelectedItem().toString();
    String  sql="update score set coursescore='"+coursescore+"'"+ "where studentid='"+
           studentid+"' and semesterid=" +this.semesterid+" and courseid="+this.courseid;
    try{
        stmt.executeUpdate(sql);
        jTextField6.setText("");
        JOptionPane.showMessageDialog(this,"该学生课程成绩已修改","信息提示",2);
    }catch(SQLException e1){
      System.out.println("数据访问出错");
    }
  }
}

class ScoreUpdatePanel_jComboBox1_actionAdapter implements java.awt.event.ActionListener {
  ScoreUpdatePanel adaptee;

  ScoreUpdatePanel_jComboBox1_actionAdapter(ScoreUpdatePanel adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jComboBox1_actionPerformed(e);
  }
}

class ScoreUpdatePanel_jButton1_actionAdapter implements java.awt.event.ActionListener {
  ScoreUpdatePanel adaptee;

  ScoreUpdatePanel_jButton1_actionAdapter(ScoreUpdatePanel adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}