delete_tushu.java

图书管理系统

/*
 * Delete_Tushu.java
 *
 * Created on 2008年5月18日, 下午6:45
 */


import java.sql.*;
import javax.swing.JOptionPane;
/**
 *
 * @author  Administrator
 */
public class Delete_Tushu extends javax.swing.JDialog {
    
    /** Creates new form Delete_Tushu */
    public Delete_Tushu(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
        this.setLocation(200, 200);
        this.setTitle("删除图书信息");
        this.setResizable(false);
    }
    
    /** 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() {

        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jtxtName = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jtxtAuthor = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jtxtPublish = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jtxtFuben = new javax.swing.JTextField();
        jLabel5 = new javax.swing.JLabel();
        jtxtKucun = new javax.swing.JTextField();
        jLabel6 = new javax.swing.JLabel();
        jbtnAdd = new javax.swing.JButton();
        jlabelMsg = new javax.swing.JLabel();
        jcmbISBN = new javax.swing.JComboBox();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);

        jLabel1.setText("书名: ");

        jLabel2.setText("作者: ");

        jLabel3.setText("出版社:");

        jLabel4.setText("副本量:");

        jLabel5.setText("库存量:");

        jLabel6.setText("ISBN:");

        jbtnAdd.setText("删除");
        jbtnAdd.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnAddActionPerformed(evt);
            }
        });

        jlabelMsg.setFont(new java.awt.Font("宋体", 0, 16));

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jlabelMsg, javax.swing.GroupLayout.DEFAULT_SIZE, 247, Short.MAX_VALUE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(24, 24, 24)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addGroup(jPanel1Layout.createSequentialGroup()
                                    .addComponent(jLabel3)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jtxtPublish, javax.swing.GroupLayout.DEFAULT_SIZE, 178, Short.MAX_VALUE))
                                .addGroup(jPanel1Layout.createSequentialGroup()
                                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                        .addComponent(jLabel1)
                                        .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE))
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                        .addComponent(jtxtName, javax.swing.GroupLayout.DEFAULT_SIZE, 184, Short.MAX_VALUE)
                                        .addComponent(jtxtAuthor, javax.swing.GroupLayout.DEFAULT_SIZE, 184, Short.MAX_VALUE))))
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addComponent(jLabel4)
                                    .addComponent(jLabel6))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addGroup(jPanel1Layout.createSequentialGroup()
                                        .addComponent(jcmbISBN, javax.swing.GroupLayout.PREFERRED_SIZE, 115, javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jbtnAdd))
                                    .addGroup(jPanel1Layout.createSequentialGroup()
                                        .addComponent(jtxtFuben, javax.swing.GroupLayout.PREFERRED_SIZE, 55, javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addGap(2, 2, 2)
                                        .addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jtxtKucun)))))
                        .addGap(9, 9, 9)))
                .addGap(47, 47, 47))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(27, 27, 27)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jtxtName, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(jtxtAuthor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(jtxtPublish, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel4)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jtxtFuben, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jLabel5)
                        .addComponent(jtxtKucun, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jbtnAdd)
                    .addComponent(jcmbISBN, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel6))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jlabelMsg, javax.swing.GroupLayout.PREFERRED_SIZE, 26, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(19, Short.MAX_VALUE))
        );

        getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);

        pack();
    }// </editor-fold>//GEN-END:initComponents

    public void Empty(){
        try{
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        }catch(ClassNotFoundException ex)
        {
            jlabelMsg.setText("SQL错:"+ex.getMessage());
        }
        try {
            String url="jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=sources\\data.mdb;pwd=shujuyuan";
            Connection con=DriverManager.getConnection(url);
            Statement st=con.createStatement();            
            ResultSet res=st.executeQuery("select ISBN from book");
            jcmbISBN.removeAllItems();
            while(res.next()) {
                 jcmbISBN.addItem(res.getString("ISBN"));
            }
            if(st!=null) st.close();
        } catch(Exception ex){
            JOptionPane.showConfirmDialog(null,"找不到数据库驱动程序！","Warning",JOptionPane.CLOSED_OPTION,JOptionPane.WARNING_MESSAGE);
            this.setVisible(false);
        }
        jcmbISBN.setSelectedItem(null);
        jtxtName.setText("");
        jtxtAuthor.setText("");
        jtxtPublish.setText("");
        jtxtFuben.setText("");
        jtxtKucun.setText("");
        jlabelMsg.setText("选择图书ISBN号，然后点击删除。");
        jtxtName.setEnabled(false);
        jtxtAuthor.setEnabled(false);
        jtxtPublish.setEnabled(false);
        jtxtFuben.setEnabled(false);
        jtxtKucun.setEnabled(false);
    }
    
    private void jbtnAddActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jbtnAddActionPerformed
        // TODO add your handling code here:
        jtxtName.setText("");
        jtxtAuthor.setText("");
        jtxtPublish.setText("");
        jtxtFuben.setText("");
        jtxtKucun.setText("");
        String flag="",is="";
        int flag2=0;
        try{
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        } catch(ClassNotFoundException ex) {
            jlabelMsg.setText("SQL错:"+ex.getMessage());
        }
        try{
             String url="jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=sources\\data.mdb;pwd=shujuyuan";
            Connection con=DriverManager.getConnection(url);
            Statement st=con.createStatement();
            ResultSet rs=st.executeQuery("select * from book");
            try{
                is=new String((String)jcmbISBN.getSelectedItem());
            }catch(NullPointerException e){
                 throw new NullPointerException();
            }
            if(is.length()!=13) throw new ArithmeticException();
            jcmbISBN.removeItem(is);
            jcmbISBN.setSelectedItem(null);
            while(rs.next())
                if(is.equals(rs.getString("ISBN"))){
                    flag=rs.getString("name");
                    jtxtName.setText(flag);
                    jtxtAuthor.setText(rs.getString("author"));
                    jtxtPublish.setText(rs.getString("publish"));
                    jtxtFuben.setText(rs.getString("fubenNum"));
                    jtxtKucun.setText(rs.getString("kucunNum"));
                }
            if(flag.length()<1) throw new ArrayIndexOutOfBoundsException();
            
            Statement st2=con.createStatement();
            ResultSet rs2=st2.executeQuery("select ISBN from jy");
            while(rs2.next())
                if(rs2.getString("ISBN").equals(is)) flag2=1;
            if(flag2!=0) throw new ArithmeticException();
            PreparedStatement ps=con.prepareStatement("delete from book where ISBN=?");
            ps.setString(1, is);
            ps.executeUpdate();
            jlabelMsg.setText("成功删除 "+is+"号书的信息!");
        }catch(NullPointerException ex){
            jlabelMsg.setText("请选择ISBN号!");
        }catch(ArithmeticException e){
            if(is.length()<1) jlabelMsg.setText("图书证号不能为空！");
            else if(is.length()!=13) jlabelMsg.setText("图书证号码不是13位！");
            else if(flag2!=0) jlabelMsg.setText("此书正被借，不能删除！");
        }catch(ArrayIndexOutOfBoundsException e){
            jlabelMsg.setText("此ISBN号书不存在！");
        }
        catch(Exception e){
            
        }
        
    }//GEN-LAST:event_jbtnAddActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                Delete_Tushu dialog = new Delete_Tushu(new javax.swing.JFrame(), true);
                dialog.addWindowListener(new java.awt.event.WindowAdapter() {
                    public void windowClosing(java.awt.event.WindowEvent e) {
                        System.exit(0);
                    }
                });
                dialog.setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    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.JPanel jPanel1;
    private javax.swing.JButton jbtnAdd;
    private javax.swing.JComboBox jcmbISBN;
    private javax.swing.JLabel jlabelMsg;
    private javax.swing.JTextField jtxtAuthor;
    private javax.swing.JTextField jtxtFuben;
    private javax.swing.JTextField jtxtKucun;
    private javax.swing.JTextField jtxtName;
    private javax.swing.JTextField jtxtPublish;
    // End of variables declaration//GEN-END:variables
    
}