超市收银系统(Java语言实现)

1、package cashier;import java.awt.BorderLayout;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.Objec

2、tInputStream;import java.io.ObjectOutputStream;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JTextArea;import javax.swing.JTextField;import javax.swing.Timer;imp

3、ort javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;SuppressWarnings("serial")public class SystemWindow extends JFrame implements ActionListenerstatic Checkstand checkstand;/此变量单纯为了保存读至保存HashMap文件中的数据，相当于一个中间媒介/* * 供显示的商品信息 */Goods good;/* * 保存收银台信息的文件 */static File

4、 file; static Checkstand c;/放在此处并不和前面的checkstand相矛盾,此变量是为了读取、保存柜台信息 static Long number;/输入的卡号 Timer time;/获取系统时间JPanel leftPanel;JButton member;/会员服务JButton common;/普通服务 JButton findMemberInfo;/查找会员信息JButton findAllMemberInfo;/查看所有会员信息JButton findGoodsSurplus;/查看商品剩余量JButton findSaleroom;/查看柜台销售额JPa

5、nel rightPanel;JTextField showTime;JPanel rightPanelSon;public SystemWindow() super("欢迎使用超市收银系统");file=new File("checkstand.dat");SystemWindow.readCheckstandInfo();/读取柜台信息Goods.getSurplusFromFile();/这一步很重要！good=new Goods();time=new Timer(1000,this);/时间time.start();this.setLayout(

6、new GridLayout(1,2,4,4);leftPanel=new JPanel();leftPanel.setLayout(new GridLayout(6,1,4,4);member=new JButton("会员服务");common=new JButton("普通服务");findMemberInfo=new JButton("查找会员信息");findAllMemberInfo=new JButton("查看所有会员信息");findGoodsSurplus=new JButton("查

7、看商品剩余量");findSaleroom=new JButton("查看柜台销售额");member.addActionListener(this);common.addActionListener(this);findMemberInfo.addActionListener(this);findAllMemberInfo.addActionListener(this);findGoodsSurplus.addActionListener(this);findSaleroom.addActionListener(this);leftPanel.add(membe

8、r);leftPanel.add(common);leftPanel.add(findMemberInfo);leftPanel.add(findAllMemberInfo);leftPanel.add(findGoodsSurplus);leftPanel.add(findSaleroom);rightPanel=new JPanel();showTime=new JTextField(12);rightPanelSon=new JPanel();showTime.setEditable(false);rightPanel.setLayout(new BorderLayout(1,1);ri

9、ghtPanel.add(showTime,BorderLayout.NORTH);rightPanel.add(BorderLayout.CENTER,rightPanelSon);this.add(leftPanel);this.add(rightPanel);this.setSize(600,500);this.setLocation(500,127);this.setVisible(true);/* * * return 返回文件中的记录 */SuppressWarnings( "unchecked", "static-access" )publ

10、ic static HashMap<ClubCard,Customer> getHashMap()File file=Checkstand.file;if(file.length()=0) checkstand=new Checkstand();checkstand.definedForSystemWindow();else try ObjectInputStream in=new ObjectInputStream(new FileInputStream(file);checkstand.cardAndCustomer=(HashMap<ClubCard,Customer&

11、gt;)in.readObject();in.close();catch(IOException e)System.err.println(e.getMessage();catch(ClassNotFoundException e1)System.err.println("文件未找到！");return checkstand.cardAndCustomer;/* * 保存柜台信息 对象串行化 */public static void AddCheckstandInfo() try if(c=null)c=new Checkstand();ObjectOutputStream

12、 out=new ObjectOutputStream(new FileOutputStream(file);out.writeObject(c);out.close();catch(IOException e)System.out.println(e.getMessage();/* * 从文件中读取柜台信息 对象串行化 * throws ClassNotFoundException */public static void readCheckstandInfo() try ObjectInputStream in=new ObjectInputStream(new FileInputStre

13、am(file); Object o=in.readObject(); if(o!=null) c=(Checkstand)o; else c=new Checkstand();/在此处生成柜台对象再合适不过来 in.close(); catch(IOException e)System.out.println(e.getMessage();catch(ClassNotFoundException e1)System.out.println("文件未找到!"); public static void main(String args) new SystemWindow();

14、 Overridepublic void actionPerformed(ActionEvent e) / TODO Auto-generated method stubDateFormat format=new SimpleDateFormat();Date date=new Date();showTime.setText(" 北京时间:"+format.format(date);final String PrintTime=format.format(date);/将信息打印在顾客的消费信息上if(e.getSource()=member) rightPanelSon.

15、removeAll();/事先先移除rightPanelSon中的所有的组件this.paintAll(getGraphics();/相当于重画的功能，此部骤相当重要rightPanelSon.setLayout(new FlowLayout();rightPanelSon.add(new JPanel();rightPanelSon.add(new JPanel();final JTextArea goodsInfo=new JTextArea();/显示商品信息rightPanelSon.add(goodsInfo);goodsInfo.setEditable(false);/不可编辑 g

16、oodsInfo.setText(good.toString(); String id=JOptionPane.showInputDialog("请输入会员卡卡号:"); try number=Long.parseLong(id); catch(NumberFormatException e1) JOptionPane.showMessageDialog(null, "输入格式有误！"); return; final HashMap<ClubCard,Customer> c1=SystemWindow.getHashMap(); if(c1=

17、null) JOptionPane.showMessageDialog(null, "会员信息不存在!",null, JOptionPane.WARNING_MESSAGE); return; else int flag=0; Customer customer1=null; ClubCard card2 = null; for(ClubCard card:c1.keySet() if(number.equals(card.getId() JTextArea area=new JTextArea(); rightPanelSon.add(area); area.setTex

18、t(c1.get(card).toString();/输出顾客信息 customer1=c1.get(card); flag=customer1.getCustomeCard().getGrade(); card2=card; /if /for if(customer1=null) JOptionPane.showMessageDialog(null, "会员信息不存在!",null, JOptionPane.WARNING_MESSAGE); return; final ClubCard card1 = card2; final int flag1=flag; final

19、 Customer customer=customer1; JPanel pane1=new JPanel(); pane1.setLayout(new GridLayout(6,2,2,2); JLabel j1=new JLabel("购"+good.getGoodsNames().get(0)+"的数量");final JTextField jt1=new JTextField(); JLabel j2=new JLabel("购"+good.getGoodsNames().get(1)+"的数量");fin

20、al JTextField jt2=new JTextField(); JLabel j3=new JLabel("购"+good.getGoodsNames().get(2)+"的数量");final JTextField jt3=new JTextField(); JLabel j4=new JLabel("购"+good.getGoodsNames().get(3)+"的数量");final JTextField jt4=new JTextField(); JLabel j5=new JLabel("

21、;购"+good.getGoodsNames().get(4)+"的数量");final JTextField jt5=new JTextField(); JLabel j6=new JLabel("购"+good.getGoodsNames().get(5)+"的数量");final JTextField jt6=new JTextField(); pane1.add(j1);pane1.add(jt1); pane1.add(j2);pane1.add(jt2); pane1.add(j3);pane1.add(jt3)

22、; pane1.add(j4);pane1.add(jt4); pane1.add(j5);pane1.add(jt5); pane1.add(j6);pane1.add(jt6); rightPanelSon.add(pane1); jt1.setText("0");/商品件数都默认设为0件 jt2.setText("0"); jt3.setText("0"); jt4.setText("0"); jt5.setText("0"); jt6.setText("0"); fi

23、nal JButton cal=new JButton("计算"); final JButton empty=new JButton("归零"); final JLabel hint=new JLabel();/对计算所得总额进行反应 rightPanelSon.add(cal); rightPanelSon.add(hint); rightPanelSon.add(empty); cal.addActionListener(new ActionListener() SuppressWarnings( "static-access")

24、 Override public void actionPerformed(ActionEvent e) Double total=0.0; / TODO Auto-generated method stub if(e.getSource()=cal) try String s1=jt1.getText();int num1=Integer.parseInt(s1); String s2=jt2.getText();int num2=Integer.parseInt(s2); String s3=jt3.getText();int num3=Integer.parseInt(s3); Stri

25、ng s4=jt4.getText();int num4=Integer.parseInt(s4); String s5=jt5.getText();int num5=Integer.parseInt(s5); String s6=jt6.getText();int num6=Integer.parseInt(s6); total+=num1*good.getPrice().get(0)+ num2*good.getPrice().get(1)+ num3*good.getPrice().get(2)+ num4*good.getPrice().get(3)+ num5*good.getPri

26、ce().get(4)+ num6*good.getPrice().get(5); /更新商品剩余量 good.updateSurplus(0, num1); good.updateSurplus(1, num2); good.updateSurplus(2, num3); good.updateSurplus(3, num4); good.updateSurplus(4, num5); good.updateSurplus(5, num6); /保存商品剩余信息到文件 good.updateSurplusFromFile(); /显示商品信息要发生变化 goodsInfo.setText(g

27、ood.toString(); if(flag1=5) hint.setText("该顾客享受9.5折优惠,本应收￥"+total+"实收￥"+(total*0.95); /更改柜台销售量 c.getSaleroomFromFile(); c.setSaleroom(c.getSaleroom()+total); SystemWindow.AddCheckstandInfo(); customer.addCustomeInfo(PrintTime+"消费￥"+total+",享受9.5折优惠后实收￥"+(total

28、*0.95); if(total>=1000&&total<2000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"蓝钻卡",此后购物享受9折优惠！"); new Card2(); customer.getCustomeCard().setGrade(4);/在后面统一保存信息 else if(total>=2000&&total<4000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级

29、为"贵族卡",此后购物享受8.5折优惠！"); new Card3(); customer.getCustomeCard().setGrade(3);/在后面统一保存信息 else if(total>=4000&&total<10000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"白钻卡",此后购物享受8折优惠！"); new Card4(); customer.getCustomeCard().setGrade(2);/在后面统一保存信息

30、else if(total>=10000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"至尊卡",此后购物享受7折优惠！"); new Card5(); customer.getCustomeCard().setGrade(1);/在后面统一保存信息 else if(flag1=4) hint.setText("该顾客享受9折优惠,本应收￥"+total+"实收￥"+(total*0.9); /更改柜台销售量 c.getSaleroomFromFile()

31、; c.setSaleroom(c.getSaleroom()+total); SystemWindow.AddCheckstandInfo(); customer.addCustomeInfo(PrintTime+"消费￥"+total+",享受9折优惠后实收￥"+(total*0.9); if(total>=2000&&total<4000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"贵族卡",此后购物享受8.5折优惠！");

32、new Card3(); customer.getCustomeCard().setGrade(3);/在后面统一保存信息 else if(total>=4000&&total<10000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"白钻卡",此后购物享受8折优惠！"); new Card4(); customer.getCustomeCard().setGrade(2);/在后面统一保存信息 else if(total>=10000) JOptionPane.sh

33、owMessageDialog(null, "恭喜该顾客会员卡升级为"至尊卡",此后购物享受7折优惠！"); new Card5(); customer.getCustomeCard().setGrade(1);/在后面统一保存信息 else if(flag1=3) hint.setText("该顾客享受8.5折优惠,本应收￥"+total+"实收￥"+(total*0.85); /更改柜台销售量 c.getSaleroomFromFile(); c.setSaleroom(c.getSaleroom()+tota

34、l); SystemWindow.AddCheckstandInfo(); customer.addCustomeInfo(PrintTime+"消费￥"+total+",享受8.5折优惠后实收￥"+(total*0.85); if(total>=4000&&total<10000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"白钻卡",此后购物享受8折优惠！"); new Card4(); customer.getCustomeCa

35、rd().setGrade(2);/在后面统一保存信息 else if(total>=10000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"至尊卡",此后购物享受7折优惠！"); new Card5(); customer.getCustomeCard().setGrade(1);/在后面统一保存信息 else if(flag1=2) hint.setText("该顾客享受8折优惠,本应收￥"+total+"实收￥"+(total*0.8); /更改柜

36、台销售量 c.getSaleroomFromFile(); c.setSaleroom(c.getSaleroom()+total); SystemWindow.AddCheckstandInfo(); customer.addCustomeInfo(PrintTime+"消费￥"+total+",享受8折优惠后实收￥"+(total*0.8); if(total>=10000) JOptionPane.showMessageDialog(null, "恭喜该顾客会员卡升级为"至尊卡",此后购物享受7折优惠！"

37、;); new Card5(); customer.getCustomeCard().setGrade(1);/在后面统一保存信息 else if(flag1=1) hint.setText("该顾客享受7折优惠,本应收￥"+total+"实收￥"+(total*0.7); /更改柜台销售量 c.getSaleroomFromFile(); c.setSaleroom(c.getSaleroom()+total); SystemWindow.AddCheckstandInfo(); customer.addCustomeInfo(PrintTime+&q

38、uot;消费￥"+total+",享受7折优惠后实收￥"+(total*0.7); /try catch(NumberFormatException e1)JOptionPane.showMessageDialog(null, "输入格式有误！"); c1.put(card1, customer);/放在此处->统一保存 Checkstand.save(); /if ); empty.addActionListener(new ActionListener() Override public void actionPerformed(Ac

39、tionEvent e) / TODO Auto-generated method stub if(e.getSource()=empty) jt1.setText("0");/商品件数清空 jt2.setText("0"); jt3.setText("0"); jt4.setText("0"); jt5.setText("0"); jt6.setText("0"); ); /else else if(e.getSource()=common) rightPanelSon.r

40、emoveAll();/事先先移除rightPanelSon中的所有的组件this.paintAll(getGraphics();/相当于重画的功能，此部骤相当重要rightPanelSon.setLayout(new FlowLayout();final JTextArea goodsInfo=new JTextArea();/显示商品信息rightPanelSon.add(goodsInfo);goodsInfo.setEditable(false);/不可编辑 goodsInfo.setText(good.toString(); JPanel pane1=new JPanel(); pa

41、ne1.setLayout(new GridLayout(6,2,2,2); JLabel j1=new JLabel("购"+good.getGoodsNames().get(0)+"的数量");final JTextField jt1=new JTextField(); JLabel j2=new JLabel("购"+good.getGoodsNames().get(1)+"的数量");final JTextField jt2=new JTextField(); JLabel j3=new JLabel(&q

42、uot;购"+good.getGoodsNames().get(2)+"的数量");final JTextField jt3=new JTextField(); JLabel j4=new JLabel("购"+good.getGoodsNames().get(3)+"的数量");final JTextField jt4=new JTextField(); JLabel j5=new JLabel("购"+good.getGoodsNames().get(4)+"的数量");final

43、 JTextField jt5=new JTextField(); JLabel j6=new JLabel("购"+good.getGoodsNames().get(5)+"的数量");final JTextField jt6=new JTextField(); pane1.add(j1);pane1.add(jt1); pane1.add(j2);pane1.add(jt2); pane1.add(j3);pane1.add(jt3); pane1.add(j4);pane1.add(jt4); pane1.add(j5);pane1.add(jt5

44、); pane1.add(j6);pane1.add(jt6); rightPanelSon.add(pane1); jt1.setText("0");/商品件数都默认设为0件 jt2.setText("0"); jt3.setText("0"); jt4.setText("0"); jt5.setText("0"); jt6.setText("0"); final JButton cal=new JButton("计算"); final JButton empty=new JButton("归零"); final JLabel hint=new JLabel();/对计算所得总额进行反应 rightPanelSo