updatestoreframe.java

java编的销售系统

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import java.util.*;
import java.io.File;
import java.sql.*;
import java.util.*;
import java.io.*;

class UpdateStoreFrame extends JFrame    //库存更新类
{
    private JButton findFile;   
    private JLabel InfoLabel=new JLabel();
    String configFile = "";
    
    public UpdateStoreFrame()
    {
		setTitle("Update PizzaStorage");
		setSize(600, 550);	
		Container contentPane = getContentPane();
		
		JPanel panel = new JPanel();
		findFile=new JButton("Open File");
		findFile.addActionListener(new FileAction(this));
      	panel.add(findFile);      
      
      	contentPane.add(panel, BorderLayout.CENTER); 
      	
      	JPanel ButtonPanel = new JPanel();
      	JButton okButton = new JButton("Sure");
      	okButton.addActionListener(new
         	ActionListener()
         	{
            	public void actionPerformed(ActionEvent event)
            	{
            		try
            		{
            		updateInfo();
               		setVisible(false);
               		}
               		catch(SQLException b)
               		{
               			b.printStackTrace();
               		}
               		catch(IOException e)
		            {
			           System.out.println(e.getMessage());
		            }
            	}
         	});
      
         ButtonPanel.add(okButton);
         contentPane.add(ButtonPanel, BorderLayout.SOUTH);
         
         
         JButton closeButton = new JButton("Close");
         closeButton.addActionListener(new
               	ActionListener()
       	{
          	public void actionPerformed(ActionEvent event)
          	{
             		setVisible(false);
             		
          	}
          	});
       
          ButtonPanel.add(closeButton);
          contentPane.add(ButtonPanel, BorderLayout.SOUTH);
         
         setSize(200, 200);
    }
    
    
    private void updateInfo() throws FileNotFoundException,IOException,SQLException
    {
      BufferedReader in=new BufferedReader(new FileReader(configFile));
	  String line;
	  while((line=in.readLine())!=null)
	  {
	  	if(line.length()<1)
	  	  continue;
	 
	  	StringTokenizer t=new StringTokenizer(line," ");
	  	String pizzaType=t.nextToken();
	  	int baseType=Integer.parseInt(t.nextToken());
	  	int size=Integer.parseInt(t.nextToken());
	  	int quantity=Integer.parseInt(t.nextToken());
	  	Connect.getConnection();
	  	Connect.updatestore(pizzaType,baseType,size,quantity);
	  	
	  }	
    }
    
    private String openFile(JFrame frame)
    {
        String s = null;

        JFileChooser chooser = new JFileChooser();
        chooser.setCurrentDirectory(new File("."));
        chooser.setFileFilter(new PizzaFilter());
        chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
        if (chooser.showOpenDialog(frame) ==
                JFileChooser.APPROVE_OPTION) {
            s = chooser.getSelectedFile().toString();
            }
        return s;
    }
	class FileAction extends AbstractAction
    {
        public FileAction(JFrame frame)
        {
            super("fileOpenCommand");
            this.frame = frame;
        }
        public void actionPerformed(ActionEvent e)
        {
            String s = openFile(frame);
            if (s != null) {
                configFile = s;
                }
        }
        private JFrame frame;
    }

}

//只接受HTML, Java, 或text file.
class PizzaFilter extends javax.swing.filechooser.FileFilter
{
    static String[] extensions = {
        ".txt",
        ".java",
        ".html",
        };
    public boolean accept(File f)
    {
        if (f.isDirectory())
            return true;
        for (int i=0; i<extensions.length; i++)
            if (f.getName().toLowerCase().endsWith(extensions[i]))
                return true;
        return false;
    }
    public String getDescription()
    {
        return "Pizza Store file";
    }
    
    
}