d_delreader.java

图书管理系统

/*
 * D_delreader.java
 *
 * Created on 2007年6月23日, 下午8:39
 */

package 图书管理系统;
import javax.swing.*;
import java.sql.*;

public class D_delreader extends javax.swing.JFrame {
    
    /** Creates new form D_delreader */
    public D_delreader() {
        initComponents();
     con=connect.getcon();
        stmt=connect.getstmt();
        this.setTitle("删除读者");
        this.setBounds(300,250,350,250);
        this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    }
    
    /** 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=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jLabel1 = new javax.swing.JLabel();
        T_dreaderID = new javax.swing.JTextField();
        B_dreader = new javax.swing.JButton();
        B_drcancel = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jLabel1.setText("\u8bf7\u8f93\u5165\u60a8\u6240\u8981\u5220\u9664\u7684\u8bfb\u8005\u7f16\u53f7:");

        B_dreader.setText("\u5220\u9664");
        B_dreader.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                B_dreaderActionPerformed(evt);
            }
        });

        B_drcancel.setText("\u53d6\u6d88");
        B_drcancel.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                B_drcancelActionPerformed(evt);
            }
        });

        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(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .addContainerGap()
                        .add(jLabel1))
                    .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                        .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                            .add(80, 80, 80)
                            .add(B_dreader)
                            .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .add(B_drcancel))
                        .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                            .add(116, 116, 116)
                            .add(T_dreaderID, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 143, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))))
                .addContainerGap(71, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jLabel1)
                .add(26, 26, 26)
                .add(T_dreaderID, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(36, 36, 36)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(B_dreader)
                    .add(B_drcancel))
                .addContainerGap(25, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void B_drcancelActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_B_drcancelActionPerformed
// TODO 将在此处添加您的处理代码：
        this.setVisible(false);
    }//GEN-LAST:event_B_drcancelActionPerformed

    private void B_dreaderActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_B_dreaderActionPerformed
// TODO 将在此处添加您的处理代码：
        try{
            if(T_dreaderID.getText().trim().equals(""))
            {
                JOptionPane.showMessageDialog(null,"读者编号输入不能为空");
                return;
            }
        
       if(JOptionPane.showConfirmDialog(null,"删除该读者将删除相应的借书记录,你确认要删除该读者吗?","温馨提示:",0)==0)
        {
            PreparedStatement sql=con.prepareStatement("delete  from 借阅 where 读者编号=?");
            sql.setString(1,T_dreaderID.getText().trim());
            sql.executeUpdate();
            sql=con.prepareStatement("delete  from 读者 where 编号=?");
            sql.setString(1,T_dreaderID.getText().trim());
            sql.executeUpdate();
        JOptionPane.showMessageDialog(null,"读者信息删除成功");
        this.setVisible(false);
        }
    }                                     
     catch(Exception ee)
         {
       JOptionPane.showMessageDialog(null,"数据库访问失败！");
 ee.printStackTrace();
    }
    }//GEN-LAST:event_B_dreaderActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new D_delreader().setVisible(true);
            }
        });
    }
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton B_drcancel;
    private javax.swing.JButton B_dreader;
    private javax.swing.JTextField T_dreaderID;
    private javax.swing.JLabel jLabel1;
    // 变量声明结束//GEN-END:variables
    private Connection con;
    private Statement stmt;
}