asstocourse3.java

学生成绩管理系统

/*
 * Asstocourse3.java
 *
 * Created on 2007年11月24日, 下午12:45
 */

package javaapplication1;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;

/**
 *
 * @author  mis05
 */
public class Asstocourse3 extends javax.swing.JFrame {
    
    /** Creates new form Asstocourse3 */
    public Asstocourse3() {
        initComponents();
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jLabel6 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        jTextField3 = new javax.swing.JTextField();
        jTextField4 = new javax.swing.JTextField();
        jTextField5 = new javax.swing.JTextField();
        jTextField6 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jLabel7 = new javax.swing.JLabel();
        jTextField7 = new javax.swing.JTextField();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jLabel1.setText("\u8bfe\u7a0b\u7f16\u53f7");

        jLabel2.setText("\u8bfe\u7a0b\u540d");

        jLabel3.setText("\u5b66\u5206");

        jLabel4.setText("\u8003\u6838\u65b9\u5f0f");

        jLabel5.setText("\u5f00\u8bbe\u5b66\u9662\u7f16\u53f7");

        jLabel6.setText("\u5b66\u65f6");

        jButton1.setText("\u4fee\u6539");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                update(evt);
            }
        });

        jLabel7.setText("\u5bb9\u91cf");

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(55, 55, 55)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jLabel1)
                    .add(jLabel3)
                    .add(jLabel5)
                    .add(jLabel7))
                .add(17, 17, 17)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                    .add(jTextField7)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jTextField3)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jTextField1)
                    .add(jTextField5, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 79, Short.MAX_VALUE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jLabel2)
                    .add(jLabel4)
                    .add(jLabel6))
                .add(19, 19, 19)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                    .add(jTextField4)
                    .add(jTextField6)
                    .add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 73, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(33, Short.MAX_VALUE))
            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                .addContainerGap(259, Short.MAX_VALUE)
                .add(jButton1)
                .add(84, 84, 84))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(46, 46, 46)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel1)
                    .add(jLabel2)
                    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(38, 38, 38)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel3)
                    .add(jLabel4)
                    .add(jTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jTextField4, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(45, 45, 45)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel5)
                    .add(jLabel6)
                    .add(jTextField5, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jTextField6, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 23, Short.MAX_VALUE)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel7)
                    .add(jTextField7, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(16, 16, 16)
                .add(jButton1)
                .add(29, 29, 29))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void update(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_update
Statement sql;

        try{
            Conect conect = new Conect();
            sql = conect.dbConn.createStatement();
            
            String number = jTextField1.getText();
            String name = jTextField2.getText();
            String score = jTextField3.getText();
            String method = jTextField4.getText();
            String collegeNo = jTextField5.getText();
            String time = jTextField6.getText();
            String max = jTextField7.getText();
            int temp = 0;
            
            if( number.equals("") )
            {
                JOptionPane.showMessageDialog(null,"课程编号不能为空","错误",JOptionPane.ERROR_MESSAGE);
            }
            else
            {
                ResultSet rs1 = sql.executeQuery("SELECT 课程编号 from 课程 where 课程编号 ='"+number+"'");
                if( rs1.next() )
                {
                    temp++;
                }
                else JOptionPane.showMessageDialog(null,"不存在此课程编号","错误",JOptionPane.ERROR_MESSAGE);               
            }                        
            
            if( temp == 1 )
            {
                int reg;
                if( !name.equals("") )
                {
                    reg = sql.executeUpdate("UPDATE 课程 SET 课程名 = '"+ name + "' WHERE 课程编号 = '"+ number +"'");
                }
                
                if( !score.equals("") )
                {
                    reg = sql.executeUpdate("UPDATE 课程 SET 学分 = '"+ score + "' WHERE 课程编号 = '"+ number +"'");
                }
                
                if( !method.equals("") )
                {
                    reg = sql.executeUpdate("UPDATE 课程 SET 考核方式 = '"+ method + "' WHERE 课程编号 = '"+ number +"'");
                }
                
                if( !collegeNo.equals("") )
                {
                    reg = sql.executeUpdate("UPDATE 课程 SET 开设学院编号 = '"+ collegeNo + "' WHERE 课程编号 = '"+ number +"'");
                }
                
                if( !time.equals("") )
                {
                    reg = sql.executeUpdate("UPDATE 课程 SET 学时 = '"+ time + "' WHERE 课程编号 = '"+ number +"'");
                }
                
                if(!max.equals(""))
                {
                    reg = sql.executeUpdate("UPDATE 课程 SET 容量='"+max+"' WHERE 课程编号='"+number+"'" );
                }
                
                JOptionPane.showMessageDialog(null,"已成功修改课程信息","成功",JOptionPane.INFORMATION_MESSAGE);
            }
            dispose();

}
catch(SQLException sqlException){
        JOptionPane.showMessageDialog(null,sqlException.getMessage(),"Database Error",JOptionPane.ERROR_MESSAGE);
        System.exit(1);}
catch(ClassNotFoundException classNotFound){
       JOptionPane.showMessageDialog(null,classNotFound.getMessage(),"Driver Not Found",JOptionPane.ERROR_MESSAGE);
        System.exit(1); }// TODO add your handling code here:
    }//GEN-LAST:event_update
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Asstocourse3().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    private javax.swing.JTextField jTextField5;
    private javax.swing.JTextField jTextField6;
    private javax.swing.JTextField jTextField7;
    // End of variables declaration//GEN-END:variables
    
}