db_dialog.java

stupor-record-manage-system(人事档案管理系统).

package psa;

import java.awt.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.awt.event.*;
import java.io.*;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class DB_Dialog extends JDialog {
  JPanel panel1 = new JPanel();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JLabel jLabel4 = new JLabel();
  GridBagLayout gridBagLayout1 = new GridBagLayout();

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

  public DB_Dialog() {
    this(null, "", false);
  }

  private void jbInit() throws Exception {
    panel1.setLayout(gridBagLayout1);
    jButton1.setFont(new java.awt.Font("DialogInput", 0, 12));
    jButton1.setText("数据库备份");
    jButton1.addActionListener(new DB_Dialog_jButton1_actionAdapter(this));
    jButton2.setFont(new java.awt.Font("DialogInput", 0, 12));
    jButton2.setText("数据库恢复");
    jButton2.addActionListener(new DB_Dialog_jButton2_actionAdapter(this));
    jLabel1.setFont(new java.awt.Font("DialogInput", 0, 12));
    jLabel1.setText("备份数据库，防止数据丢失");
    jLabel2.setFont(new java.awt.Font("DialogInput", 0, 12));
    jLabel2.setText("从数据库备份中恢复所有数据，");
    jLabel3.setFont(new java.awt.Font("DialogInput", 0, 12));
    jLabel3.setOpaque(false);
    jLabel3.setText("恢复时会覆盖已有数据，可能会");
    jLabel4.setFont(new java.awt.Font("DialogInput", 0, 12));
    jLabel4.setText("造成数据丢失，小心使用！");
    this.setResizable(false);
    this.setTitle("数据库管理");
    getContentPane().add(panel1);
    panel1.add(jLabel3,  new GridBagConstraints(1, 1, 1, 2, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(58, 30, 47, 35), 11, 7));
    panel1.add(jButton2,  new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(49, 59, 0, 0), 0, 0));
    panel1.add(jLabel2,  new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(34, 30, 9, 35), 12, 16));
    panel1.add(jLabel4,  new GridBagConstraints(1, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 30, 32, 70), 0, 0));
    panel1.add(jLabel1,  new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(40, 33, 0, 45), 22, 15));
    panel1.add(jButton1,  new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(40, 59, 0, 0), 0, 0));
  }

  void jButton1_actionPerformed(ActionEvent e) {
    File fBak = new File(".\\bak\\db.bak");
    File fDb = new File(".\\data\\psa.mdb");
    FileInputStream fin= null;
    FileOutputStream fout = null;
    try{
      if(!fBak.exists()) fBak.createNewFile();
      fin=new FileInputStream(fDb);
      fout = new FileOutputStream(fBak);
      int r;
      while((r = fin.read()) != -1){
        fout.write((byte)r);
      }
      JOptionPane.showMessageDialog(this,"备份成功！","提示",JOptionPane.INFORMATION_MESSAGE);
    }catch(Exception ex)
    {
      JOptionPane.showMessageDialog(this,ex.toString(),"提示",JOptionPane.ERROR_MESSAGE);
    }finally
    {
        try{
          if(fin!=null) fin.close();
          if(fout!=null) fout.close();
        }
        catch(Exception ex){}
    }

  }

  void jButton2_actionPerformed(ActionEvent e) {
    File fBak = new File(".\\bak\\db.bak");
    File fDb = new File(".\\data\\psa.mdb");
    FileInputStream fin= null;
    FileOutputStream fout = null;
    try{
      if(!fBak.exists())
      {
        JOptionPane.showMessageDialog(this, "目前还没有备份！", "提示",
                                      JOptionPane.ERROR_MESSAGE);
        return;
      }
      fin=new FileInputStream(fBak);
      fout = new FileOutputStream(fDb);
      int r;
      while((r = fin.read()) != -1){
        fout.write((byte)r);
      }
      JOptionPane.showMessageDialog(this,"数据库恢复成功！","提示",JOptionPane.INFORMATION_MESSAGE);
    }catch(Exception ex)
    {
      JOptionPane.showMessageDialog(this,ex.toString(),"提示",JOptionPane.ERROR_MESSAGE);
    }finally
    {
        try{
          if(fin!=null) fin.close();
          if(fout!=null) fout.close();
        }
        catch(Exception ex){}
    }

  }
}

class DB_Dialog_jButton1_actionAdapter implements java.awt.event.ActionListener {
  DB_Dialog adaptee;

  DB_Dialog_jButton1_actionAdapter(DB_Dialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class DB_Dialog_jButton2_actionAdapter implements java.awt.event.ActionListener {
  DB_Dialog adaptee;

  DB_Dialog_jButton2_actionAdapter(DB_Dialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}