点菜系统数据库课程设计

效果图

数据库建表

CREATE TABLE OrderDish
(orderid int not null,money int,primary key(orderid)
);CREATE TABLE Dish
(id varchar(20) not null,name nchar(10),price int,type nchar(10),primary key(id)
);
insert into Dish values('zhushi0','水煮肉片',20,'主食');
insert into Dish values('zhushi1','农家小炒肉',19,'主食');
insert into Dish values('zhushi2','回锅牛肉',28,'主食');
insert into Dish values('zhushi3','红烧鱼块',24,'主食');
insert into Dish values('zhushi4','干烧刁子鱼',24,'主食');
insert into Dish values('zhushi5','干锅手撕鸡',22,'主食');
insert into Dish values('zhushi6','香菇焖鸡',26,'主食');
insert into Dish values('zhushi7','四季豆牛肚丝',26,'主食');
insert into Dish values('zhushi8','鱼香肉丝',19,'主食');  insert into Dish values('sushi0','酸辣土豆丝',12,'素食');
insert into Dish values('sushi1','番茄炒蛋',13,'素食');
insert into Dish values('sushi2','豆角炒茄子',13,'素食');
insert into Dish values('sushi3','麻婆豆腐',12,'素食');
insert into Dish values('sushi4','手撕包菜',10,'素食');
insert into Dish values('sushi5','小炒香干',13,'素食');
insert into Dish values('sushi6','小炒千叶豆腐',16,'素食');
insert into Dish values('sushi7','口味黑木耳',16,'素食');insert into Dish values('xiaochi0','鸡米花',10,'小吃');
insert into Dish values('xiaochi1','无骨鸡柳',10,'小吃');
insert into Dish values('xiaochi2','骨肉相连',10,'小吃');
insert into Dish values('xiaochi3','薯条',8,'小吃');
insert into Dish values('xiaochi4','川香鸡柳',10,'小吃');
insert into Dish values('xiaochi5','香酥鸡块',15,'小吃');insert into Dish values('yinpin0','红豆奶茶',10,'饮品');
insert into Dish values('yinpin1','芒果奶昔',10,'饮品');
insert into Dish values('yinpin2','蜜桃奶昔',10,'饮品');
insert into Dish values('yinpin3','姜母茶',15,'饮品');
insert into Dish values('yinpin4','原味奶茶',10,'饮品');
insert into Dish values('yinpin5','咖啡奶茶',10,'饮品');CREATE TABLE OrderItem
(orderid int not null,id varchar(20) not null,num int,primary key(orderid,id),foreign key(orderid) references OrderDish(orderid),foreign key(id) references Dish(id)
);drop table OrderItem;
drop table Dish;
drop table OrderDish;try
{}
catch(Exception exp)
{exp.printStackTrace();
}String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    
String user = "root" ;   
String password = "" ;
Class.forName("com.mysql.jdbc.Driver");
Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null; 
ps=conn.prepareStatement("select count(*) from OrderDish"); 
ResultSet re=ps.executeQuery();

需要添加n多图片，加载连接mysql的驱动器

import java.awt.*;
import java.sql.*;
import java.awt.event.*;
import java.util.Vector;
import javax.swing.*;
import java.sql.*;
import javax.swing.border.EmptyBorder;
public class test1 extends JFrame implements ActionListener {//private static final String  = null;public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {public void run() {try {test1 frame = new test1();frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}int orderid=0;public test1() {setTitle("点菜系统");setSize(600,600); //设置窗口大小setLocation(100,100); //设置窗口的位置ImageIcon image = new ImageIcon("Image/huanyingguanglin.PNG"); image.setImage(image.getImage().getScaledInstance(600,530,Image.SCALE_DEFAULT)); // 把背景图片显示在一个标签里面  JLabel label = new JLabel(image);  // 把标签的大小位置设置为图片刚好填充整个面板  label.setBounds(0, 0, this.getWidth(), this.getHeight());  // 把内容窗格转化为JPanel，否则不能用方法setOpaque()来使内容窗格透明  JPanel imagePanel = (JPanel) this.getContentPane();  imagePanel.setOpaque(false);  // 把背景图片添加到分层窗格的最底层作为背景  this.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE)); JButton jb=new JButton();jb.addActionListener(this);  //增加监听jb.setActionCommand("Welcome"); //监听信号jb.setPreferredSize(new Dimension(250,50));jb.setFont(new Font("宋体",Font.BOLD,20));jb.setText("欢迎顾客点击进入菜单");JPanel jp=new JPanel();jp.setOpaque(false);jp.setLayout(new GridBagLayout());GridBagConstraints c=new GridBagConstraints();c.fill=GridBagConstraints.NONE;c.gridx=0; c.gridy=0;c.insets=new Insets(300,0,50,50);jp.add(jb,c);jb=new JButton();jb.addActionListener(this);jb.setActionCommand("Close");jb.setPreferredSize(new Dimension(250,50));jb.setFont(new Font("宋体",Font.BOLD,20));jb.setText("取消订单退出系统");c=new GridBagConstraints();c.fill=GridBagConstraints.NONE;c.gridx=1; c.gridy=0;c.insets=new Insets(300,0,50,50);jp.add(jb,c);this.add(jp);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);  //是否显示    }public void actionPerformed(ActionEvent e){try{String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    String user = "root" ;   String password = "" ;Class.forName("com.mysql.jdbc.Driver");Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null;if(e.getActionCommand()=="Welcome"){    ps=conn.prepareStatement("select count(*) from OrderDish"); ResultSet re=ps.executeQuery();while(re.next()) orderid=re.getInt(1);orderid++;ps=conn.prepareStatement("insert into OrderDish values(?,0)");ps.setInt(1, orderid); ps.executeUpdate();OrderDish order=new OrderDish(this,"菜单",true,orderid); //新的对话界面}else if(e.getActionCommand()=="Close"){ ps=conn.prepareStatement("delete from OrderItem where orderid=?");ps.setInt(1, orderid);ps.executeUpdate();ps=conn.prepareStatement("delete from OrderDish where orderid=?"); ps.setInt(1, orderid);ps.executeUpdate();this.dispose();}    }catch(Exception exp){ exp.printStackTrace(); }}
}class OrderDish extends JDialog implements ActionListener
{JPanel[] jp={null,null,null,null};JTabbedPane jtp=null;JButton but=null;JPanel topPane=null,bottomPane=null,pane=null;JPanel[] zhushi={null,null,null,null,null,null,null,null,null,null};JLabel lab=null;JCheckBox[] zhushicheck={null,null,null,null,null,null,null,null,null};JCheckBox[] sushicheck={null,null,null,null,null,null,null,null};JCheckBox[] xiaochicheck={null,null,null,null,null,null};JCheckBox[] yinpincheck={null,null,null,null,null,null};JComboBox[] zhushicombo={null,null,null,null,null,null,null,null,null};JComboBox[] sushicombo={null,null,null,null,null,null,null,null};JComboBox[] xiaochicombo={null,null,null,null,null,null};JComboBox[] yinpincombo={null,null,null,null,null,null};ImageIcon image=null;JScrollPane[] jsp={null,null,null,null};String[] zhushiAL={ "zhushi0","zhushi1","zhushi2","zhushi3","zhushi4","zhushi5","zhushi6","zhushi7","zhushi8" };String[] sushiAL={ "sushi0","sushi1","sushi2","sushi3","sushi4","sushi5","sushi6","sushi7" };String[] xiaochiAL={ "xiaochi0","xiaochi1","xiaochi2","xiaochi3","xiaochi4","xiaochi5" };String[] yinpinAL={ "yinpin0","yinpin1","yinpin2","yinpin3","yinpin4","yinpin5" };String[] zhushinumAL={ "zhushinum0","zhushinum1","zhushinum2","zhushinum3","zhushinum4","zhushinum5","zhushinum6","zhushinum7","zhushinum8" };String[] sushinumAL={ "sushinum0","sushinum1","sushinum2","sushinum3","sushinum4","sushinum5","sushinum6","sushinum7" };String[] xiaochinumAL={ "xiaochinum0","xiaochinum1","xiaochinum2","xiaochinum3","xiaochinum4","xiaochinum5" };String[] yinpinnumAL={ "yinpinnum0","yinpinnum1","yinpinnum2","yinpinnum3","yinpinnum4","yinpinnum5" };int orderid=0,zhushinum=9,sushinum=8,xiaochinum=6,yinpinnum=6;OrderDish(Frame a,String b,boolean c,int oid){super(a,b,c);orderid=oid;this.setTitle("菜单");this.setSize(600,600);this.setLocation(200,100);//右上角碗碟图片image = new ImageIcon("Image/碗碟.PNG"); image.setImage(image.getImage().getScaledInstance(300,100,Image.SCALE_DEFAULT)); lab=new JLabel(image);//左上角查看当前订单按钮but=new JButton();but.setForeground(Color.RED);but.setFont(new Font("宋体",Font.BOLD,25));but.setText("点击查看当前订单");but.setBackground(Color.WHITE);but.setPreferredSize(new Dimension(280,90));but.addActionListener(this);but.setActionCommand("ViewOrder"); //点击查看当前订单监听器pane=new JPanel();pane.setBackground(Color.WHITE);pane.add(but);//上部分面板topPane=new JPanel();topPane.setLayout(new GridLayout(1,2));topPane.add(pane);topPane.add(lab);this.add(topPane,BorderLayout.NORTH);//四个选项卡面板jp[0]=new JPanel();jp[1]=new JPanel();jp[2]=new JPanel();jp[3]=new JPanel();//给第0个面板添加内容jp[0].setLayout(new GridLayout(3,3,10,10));for(int i=0;i<zhushinum;i++) zhushi[i]=new JPanel(); //多个面板存放不同的菜String[] num={"1","2","3","4","5"};String[] zhushiname={"水煮肉片  20元/份 ", "农家小炒肉  19元/份", "回锅牛肉 28元/份","红烧鱼块 24元/份", "干烧刁子鱼 24元/份", "干锅手撕鸡 22元/份","香菇焖鸡 26元/份", "四季豆牛肚丝 26元/份", "鱼香肉丝 19元/份"};String[] zhushitp={"Image/shuizhuroupian.PNG","Image/nongjiaxiaochaorou.PNG","Image/huiguoniurou.PNG","Image/hongshaoyukuai.PNG","Image/ganshaodiaoziyu.PNG","Image/ganguoshousiji.PNG","Image/xianggumenji.PNG","Image/sijidouniudusi.PNG","Image/yuxiangrousi.PNG"};//给每个菜的面板添加内容for(int i=0;i<zhushinum;i++){bottomPane=new JPanel();bottomPane.setLayout(new GridLayout(2,1));zhushicheck[i]=new JCheckBox("选中");zhushicheck[i].addActionListener(this);zhushicheck[i].setActionCommand(zhushiAL[i]); //增加监听器lab=new JLabel(zhushiname[i]);bottomPane.add(lab); zhushicombo[i]=new JComboBox(num); //下拉列表框zhushicombo[i].setSelectedIndex(0); //设置默认为1(第0个数)zhushicombo[i].addActionListener(this);zhushicombo[i].setActionCommand(zhushinumAL[i]);lab=new JLabel("份");pane=new JPanel();pane.add(zhushicheck[i]); pane.add(zhushicombo[i]); pane.add(lab);bottomPane.add(pane); image= new ImageIcon(zhushitp[i]); image.setImage(image.getImage().getScaledInstance(180,120,Image.SCALE_DEFAULT));lab=new JLabel(image);zhushi[i].add(lab,BorderLayout.CENTER);zhushi[i].add(bottomPane,BorderLayout.SOUTH);}//把所有菜的面板加入到大面板中去for(int i=0;i<zhushinum;i++) jp[0].add(zhushi[i]);jp[0].setPreferredSize(new Dimension(560,600));jsp[0]=new JScrollPane(jp[0]);//给第1个面板添加内容String[] sushiname={"酸辣土豆丝 12元/份","番茄炒蛋 13元/份","豆角炒茄子 13元/份","麻婆豆腐 12元/份","手撕包菜 10元/份","小炒香干 13元/份","小炒千叶豆腐 16元/份","口味黑木耳 16元/份"};String[] sushitp={"sushi/suanlatudousi.PNG","sushi/fanqiechaodan.PNG","sushi/doujiaochaoqiezi.PNG","sushi/mapodoufu.PNG","sushi/shousibaocai.PNG","sushi/xiaochaoxianggan.PNG","sushi/xiaochaoqianyedoufu.PNG","sushi/kouweiheimuer.PNG"};jp[1].setLayout(new GridLayout(3,3,10,10));for(int i=0;i<sushinum;i++) zhushi[i]=new JPanel(); //多个面板存放不同的菜//给每个菜的面板添加内容for(int i=0;i<sushinum;i++){bottomPane=new JPanel();bottomPane.setLayout(new GridLayout(2,1));sushicheck[i]=new JCheckBox("选中");sushicheck[i].addActionListener(this);sushicheck[i].setActionCommand(sushiAL[i]); //增加监听器lab=new JLabel(sushiname[i]);bottomPane.add(lab); sushicombo[i]=new JComboBox(num); //下拉列表框sushicombo[i].setSelectedIndex(0); //设置默认为1(第0个数)sushicombo[i].addActionListener(this);sushicombo[i].setActionCommand(sushinumAL[i]);lab=new JLabel("份");pane=new JPanel();pane.add(sushicheck[i]); pane.add(sushicombo[i]); pane.add(lab);bottomPane.add(pane); image= new ImageIcon(sushitp[i]); image.setImage(image.getImage().getScaledInstance(180,120,Image.SCALE_DEFAULT));lab=new JLabel(image);zhushi[i].add(lab,BorderLayout.CENTER);zhushi[i].add(bottomPane,BorderLayout.SOUTH);}for(int i=0;i<sushinum;i++) jp[1].add(zhushi[i]);jp[1].setPreferredSize(new Dimension(560,600));jsp[1]=new JScrollPane(jp[1]);//给第2个面板添加内容String[] xiaochiname={"鸡米花  10元/份","无骨鸡柳 10元/份","骨肉相连 10元/份","薯条 8元/份","川香鸡柳 10元/份","香酥鸡块 15元/份"};String[] xiaochitp={"xiaochi/jimihua.PNG","xiaochi/wugujiliu.PNG","xiaochi/gurouxianglian.PNG","xiaochi/shutiao.PNG","xiaochi/chuanxiangjiliu.PNG","xiaochi/xiangsujikuai.PNG"};jp[2].setLayout(new GridLayout(2,3,10,10));for(int i=0;i<xiaochinum;i++) zhushi[i]=new JPanel(); //多个面板存放不同的菜//给每个菜的面板添加内容for(int i=0;i<xiaochinum;i++){bottomPane=new JPanel();bottomPane.setLayout(new GridLayout(2,1));xiaochicheck[i]=new JCheckBox("选中");xiaochicheck[i].addActionListener(this);xiaochicheck[i].setActionCommand(xiaochiAL[i]); //增加监听器lab=new JLabel(xiaochiname[i]);bottomPane.add(lab); xiaochicombo[i]=new JComboBox(num); //下拉列表框xiaochicombo[i].setSelectedIndex(0); //设置默认为1(第0个数)xiaochicombo[i].addActionListener(this);xiaochicombo[i].setActionCommand(xiaochinumAL[i]);lab=new JLabel("份");pane=new JPanel();pane.add(xiaochicheck[i]); pane.add(xiaochicombo[i]); pane.add(lab);bottomPane.add(pane); image= new ImageIcon(xiaochitp[i]); image.setImage(image.getImage().getScaledInstance(180,120,Image.SCALE_DEFAULT));lab=new JLabel(image);zhushi[i].add(lab,BorderLayout.CENTER);zhushi[i].add(bottomPane,BorderLayout.SOUTH);}for(int i=0;i<xiaochinum;i++) jp[2].add(zhushi[i]);jp[2].setPreferredSize(new Dimension(560,400));jsp[2]=new JScrollPane(jp[2]);//给第3个面板添加内容String[] yinpinname={"红豆奶茶  10元/份","芒果奶昔 10元/份","蜜桃奶昔 10元/份","姜母茶 15元/份","原味奶茶 10元/份","咖啡奶茶 10元/份"};String[] yinpintp={"yinpin/hongdounaicha.PNG","yinpin/mangguonaixi.PNG","yinpin/mitaonaixi.PNG","yinpin/jiangmucha.PNG","yinpin/yuanweinaicha.PNG","yinpin/kafeinaicha.PNG"};jp[3].setLayout(new GridLayout(2,3,10,10));for(int i=0;i<yinpinnum;i++) zhushi[i]=new JPanel(); //多个面板存放不同的菜//给每个菜的面板添加内容for(int i=0;i<yinpinnum;i++){bottomPane=new JPanel();bottomPane.setLayout(new GridLayout(2,1));yinpincheck[i]=new JCheckBox("选中");yinpincheck[i].addActionListener(this);yinpincheck[i].setActionCommand(yinpinAL[i]); //增加监听器lab=new JLabel(yinpinname[i]);bottomPane.add(lab); yinpincombo[i]=new JComboBox(num); //下拉列表框yinpincombo[i].setSelectedIndex(0); //设置默认为1(第0个数)yinpincombo[i].addActionListener(this);yinpincombo[i].setActionCommand(yinpinnumAL[i]);lab=new JLabel("份");pane=new JPanel();pane.add(yinpincheck[i]); pane.add(yinpincombo[i]); pane.add(lab);bottomPane.add(pane); image= new ImageIcon(yinpintp[i]); image.setImage(image.getImage().getScaledInstance(180,120,Image.SCALE_DEFAULT));lab=new JLabel(image);zhushi[i].add(lab,BorderLayout.CENTER);zhushi[i].add(bottomPane,BorderLayout.SOUTH);}//把所有菜的面板加入到大面板中去for(int i=0;i<yinpinnum;i++) jp[3].add(zhushi[i]);jp[3].setPreferredSize(new Dimension(560,400));jsp[3]=new JScrollPane(jp[3]);jtp=new JTabbedPane();jtp.add("主食",jsp[0]);jtp.add("素食",jsp[1]);jtp.add("小吃",jsp[2]);jtp.add("饮品",jsp[3]);this.add(jtp,BorderLayout.CENTER);JPanel bottomPane=new JPanel();but=new JButton();but.setFont(new Font("宋体",Font.BOLD,20));but.setText(" 前往结账   ");but.addActionListener(this);but.setActionCommand("jiezhang");bottomPane.add(but);but=new JButton();but.setFont(new Font("宋体",Font.BOLD,20));but.setText(" 重新选菜   ");but.addActionListener(this);but.setActionCommand("chongxuan");bottomPane.add(but);but=new JButton();but.setFont(new Font("宋体",Font.BOLD,20));but.setText("   返回     ");but.addActionListener(this);but.setActionCommand("Close");bottomPane.add(but);this.add(bottomPane,BorderLayout.SOUTH);setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);setVisible(true);  //是否显示    }public int Getzhushi(String s){for(int i=0;i<zhushinum;i++) if(s==zhushiAL[i]) return i;return -1;}public int Getzhushinum(String s){for(int i=0;i<zhushinum;i++) if(s==zhushinumAL[i]) return i;return -1;}public int Getsushi(String s){for(int i=0;i<sushinum;i++) if(s==sushiAL[i]) return i;return -1;}public int Getsushinum(String s){for(int i=0;i<sushinum;i++) if(s==sushinumAL[i]) return i;return -1;}public int Getxiaochi(String s){for(int i=0;i<xiaochinum;i++) if(s==xiaochiAL[i]) return i;return -1;}public int Getxiaochinum(String s){for(int i=0;i<xiaochinum;i++) if(s==xiaochinumAL[i]) return i;return -1;}public int Getyinpin(String s){for(int i=0;i<yinpinnum;i++) if(s==yinpinAL[i]) return i;return -1;}public int Getyinpinnum(String s){for(int i=0;i<yinpinnum;i++) if(s==yinpinnumAL[i]) return i;return -1;}public void actionPerformed(ActionEvent e){if(e.getActionCommand()=="Close") this.dispose(); //关闭窗口else if(e.getActionCommand()=="jiezhang") { Check ck=new Check(this,"结账",true,orderid); }//产生结账窗口else if(e.getActionCommand()=="chongxuan"){//把所有的选择取消,并删除数据库中所有选菜内容for(int i=0;i<zhushinum;i++) { if(zhushicheck[i].isSelected())    zhushicheck[i].setSelected(false);zhushicombo[i].setSelectedIndex(0);}for(int i=0;i<sushinum;i++) {if(sushicheck[i].isSelected()) sushicheck[i].setSelected(false);zhushicombo[i].setSelectedIndex(0);}for(int i=0;i<xiaochinum;i++) {if(xiaochicheck[i].isSelected()) xiaochicheck[i].setSelected(false);xiaochicombo[i].setSelectedIndex(0);}for(int i=0;i<yinpinnum;i++){if(yinpincheck[i].isSelected()) yinpincheck[i].setSelected(false);yinpincombo[i].setSelectedIndex(0);}try{String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    String user = "root" ;   String password = "" ;Class.forName("com.mysql.jdbc.Driver");Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null; ps=conn.prepareStatement("delete from OrderItem where orderid=?"); ps.setInt(1, orderid);ps.executeUpdate();        }catch(Exception exp){exp.printStackTrace();}return;}else if(e.getActionCommand()=="ViewOrder"){ View view=new View(this,"当前订单",true,orderid); }else{try{String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    String user = "root" ;   String password = "" ;Class.forName("com.mysql.jdbc.Driver");Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null; int a=Getzhushi(e.getActionCommand());if(a!=-1){if(zhushicheck[a].isSelected()) {ps=conn.prepareStatement("insert into OrderItem values(?,?,?)");ps.setInt(1,orderid); ps.setString(2, zhushiAL[a]);int num=zhushicombo[a].getSelectedIndex()+1;ps.setInt(3, num);ps.executeUpdate();}else{ps=conn.prepareStatement("delete from OrderItem where orderid=? and id=?");ps.setInt(1, orderid); ps.setString(2, zhushiAL[a]);ps.executeUpdate();}return;}a=Getsushi(e.getActionCommand());if(a!=-1){if(sushicheck[a].isSelected()) {ps=conn.prepareStatement("insert into OrderItem values(?,?,?)");ps.setInt(1,orderid); ps.setString(2, sushiAL[a]);int num=sushicombo[a].getSelectedIndex()+1;ps.setInt(3, num);ps.executeUpdate();}else{ps=conn.prepareStatement("delete from OrderItem where orderid=? and id=?");ps.setInt(1, orderid); ps.setString(2, sushiAL[a]);ps.executeUpdate();}return;}a=Getxiaochi(e.getActionCommand());if(a!=-1){if(xiaochicheck[a].isSelected()) {ps=conn.prepareStatement("insert into OrderItem values(?,?,?)");ps.setInt(1,orderid); ps.setString(2, xiaochiAL[a]);int num=xiaochicombo[a].getSelectedIndex()+1;ps.setInt(3, num);ps.executeUpdate();}else{ps=conn.prepareStatement("delete from OrderItem where orderid=? and id=?");ps.setInt(1, orderid); ps.setString(2, xiaochiAL[a]);ps.executeUpdate();}return;}a=Getyinpin(e.getActionCommand());if(a!=-1){if(yinpincheck[a].isSelected()) {ps=conn.prepareStatement("insert into OrderItem values(?,?,?)");ps.setInt(1,orderid); ps.setString(2, yinpinAL[a]);int num=yinpincombo[a].getSelectedIndex()+1;ps.setInt(3, num);ps.executeUpdate();}else{ps=conn.prepareStatement("delete from OrderItem where orderid=? and id=?");ps.setInt(1, orderid); ps.setString(2, yinpinAL[a]);ps.executeUpdate();}return;}a=Getzhushinum(e.getActionCommand());if(a!=-1){if(zhushicheck[a].isSelected()){ps=conn.prepareStatement("update OrderItem set num=? where orderid=? and id=?");int num=zhushicombo[a].getSelectedIndex()+1;ps.setInt(1, num);    ps.setInt(2, orderid); ps.setString(3, zhushiAL[a]);    ps.executeUpdate();}}a=Getsushinum(e.getActionCommand());if(a!=-1){if(sushicheck[a].isSelected()){ps=conn.prepareStatement("update OrderItem set num=? where orderid=? and id=?");int num=sushicombo[a].getSelectedIndex()+1;ps.setInt(1, num);    ps.setInt(2, orderid); ps.setString(3, sushiAL[a]);    ps.executeUpdate();}}a=Getxiaochinum(e.getActionCommand());if(a!=-1){if(xiaochicheck[a].isSelected()){ps=conn.prepareStatement("update OrderItem set num=? where orderid=? and id=?");int num=xiaochicombo[a].getSelectedIndex()+1;ps.setInt(1, num);    ps.setInt(2, orderid); ps.setString(3, xiaochiAL[a]);    ps.executeUpdate();}}a=Getyinpinnum(e.getActionCommand());if(a!=-1){if(yinpincheck[a].isSelected()){ps=conn.prepareStatement("update OrderItem set num=? where orderid=? and id=?");int num=yinpincombo[a].getSelectedIndex()+1;ps.setInt(1, num);    ps.setInt(2, orderid); ps.setString(3, yinpinAL[a]);    ps.executeUpdate();}} }catch(Exception exp){exp.printStackTrace();}}}
}class View extends JDialog implements ActionListener
{JScrollPane[] jsp={null,null,null,null,null};int orderid=0;View(JDialog a,String b,boolean c,int oid){super(a,b,c);orderid=oid;this.setSize(600,600);this.setLocation(300,100);//连接数据库把选菜信息显示出来JTabbedPane jtp=new JTabbedPane();String[] sql={"select name,price,num from Dish,OrderItem where orderid=? and OrderItem.id=Dish.id","select name,price,num from Dish,OrderItem where orderid=? and OrderItem.id=Dish.id and Dish.id like 'zhushi%'","select name,price,num from Dish,OrderItem where orderid=? and OrderItem.id=Dish.id and Dish.id like 'sushi%'","select name,price,num from Dish,OrderItem where orderid=? and OrderItem.id=Dish.id and Dish.id like 'xiaochi%'","select name,price,num from Dish,OrderItem where orderid=? and OrderItem.id=Dish.id and Dish.id like 'yinpin%'"};try{String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    String user = "root" ;   String password = "" ;Class.forName("com.mysql.jdbc.Driver");Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null; for(int i=0;i<5;i++){Vector ziduan=new Vector();ziduan.add("菜名"); ziduan.add("单价"); ziduan.add("数量");Vector jilu=new Vector(); //集合类      //这里就要连接数据库把信息显示出来ps=conn.prepareStatement(sql[i]); ps.setInt(1, orderid);ResultSet re=ps.executeQuery();while(re.next()){String name=re.getString(1);String price =String.format("%d", re.getInt(2));String num=String.format("%d", re.getInt(3));Vector v=new Vector();v.add(name); v.add(price); v.add(num);jilu.add(v);}JTable tab=new JTable(jilu,ziduan);//JTable是表格,里面的参数是先记录后字段tab.setFont(new Font("楷体",Font.BOLD,20));tab.setBackground(Color.CYAN);tab.setRowHeight(30);jsp[i]=new JScrollPane(tab); //滚动条}}catch(Exception exp){exp.printStackTrace();}jtp.add("所有",jsp[0]);jtp.add("主食",jsp[1]);jtp.add("素食",jsp[2]);jtp.add("小吃",jsp[3]);jtp.add("饮品",jsp[4]);this.add(jtp,BorderLayout.CENTER);JButton but=new JButton();but.setFont(new Font("宋体",Font.BOLD,20));but.setText(" 返回  ");but.addActionListener(this);but.setActionCommand("exit");JPanel pane=new JPanel();pane.add(but,BorderLayout.CENTER);this.add(pane,BorderLayout.SOUTH);setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);setVisible(true);  //是否显示}public void actionPerformed(ActionEvent e){if(e.getActionCommand()=="exit"){this.dispose();}}
}
class Check extends JDialog implements ActionListener
{JButton[] jb={null,null};int orderid=0,sum=0;Check(JDialog a,String b,boolean c,int oid){super(a,b,c);orderid=oid;this.setTitle("结账");this.setSize(600,600);this.setLocation(300,100);//连接数据库把所有选菜信息显示出来Vector ziduan=new Vector();ziduan.add("菜名"); ziduan.add("单价"); ziduan.add("数量");Vector jilu=new Vector();//连接数据库得到信息try{String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    String user = "root" ;   String password = "" ;Class.forName("com.mysql.jdbc.Driver");Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null; ps=conn.prepareStatement("select name,price,num from Dish,OrderItem where orderid=? and OrderItem.id=Dish.id"); ps.setInt(1, orderid);ResultSet re=ps.executeQuery();while(re.next()){String name=re.getString(1);int p=re.getInt(2);int t=re.getInt(3);sum+=p*t;String price =String.format("%d", p);String num=String.format("%d", t);Vector v=new Vector();v.add(name); v.add(price); v.add(num);jilu.add(v);}}catch(Exception exp){exp.printStackTrace();}//加总价标签JLabel lab=new JLabel();lab.setFont(new Font("宋体",Font.BOLD,20));lab.setText("总计 "+sum+"元");lab.setHorizontalAlignment(JLabel.CENTER);this.add(lab,BorderLayout.NORTH);//加表格记录JTable tab=new JTable(jilu,ziduan);//JTable是表格,里面的参数是先记录后字段tab.setFont(new Font("楷体",Font.BOLD,20));tab.setBackground(Color.CYAN);tab.setRowHeight(30);JScrollPane jsp=new JScrollPane(tab); //滚动条    this.add(jsp,BorderLayout.CENTER);//加按钮jb[0]=new JButton();jb[0].setFont(new Font("宋体",Font.BOLD,20));jb[0].setText("  确认支付   ");jb[0].addActionListener(this);jb[0].setActionCommand("Pay");jb[1]=new JButton();jb[1].setFont(new Font("宋体",Font.BOLD,20));jb[1].setText("  返回    ");jb[1].addActionListener(this);jb[1].setActionCommand("Close");JPanel bottomPane=new JPanel();bottomPane.add(jb[0]); bottomPane.add(jb[1]);this.add(bottomPane,BorderLayout.SOUTH);setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);setVisible(true);  //是否显示}public void actionPerformed(ActionEvent e){//if(e.getActionCommand()=="Close"){this.dispose();}else if(e.getActionCommand()=="Pay"){try{String url = "jdbc:mysql://localhost:3306/test" ;  //下面几行都是模板    String user = "root" ;   String password = "" ;Class.forName("com.mysql.jdbc.Driver");Connection conn=DriverManager.getConnection(url, user, password);PreparedStatement ps=null; ps=conn.prepareStatement("update OrderDish set money=? where orderid=?");ps.setInt(1, sum); ps.setInt(2, orderid);ps.executeUpdate();                }catch(Exception exp){exp.printStackTrace();}Pay pay=new Pay(this,"支付",true);}}
}class Pay extends JDialog implements ActionListener
{JTabbedPane jtp=null;JButton jb=null;JPanel bottomPane=null;JLabel[] jl={null,null,null,null};ImageIcon image=null;Pay(JDialog a,String b,boolean c){super(a,b,c);this.setSize(600,600);this.setLocation(400,100);image= new ImageIcon("Image/zhifubao.PNG"); image.setImage(image.getImage().getScaledInstance(600,500,Image.SCALE_DEFAULT));jl[0]=new JLabel(image);image= new ImageIcon("Image/weixin.PNG"); image.setImage(image.getImage().getScaledInstance(600,500,Image.SCALE_DEFAULT));jl[1]=new JLabel(image);image= new ImageIcon("Image/wangyin.PNG"); image.setImage(image.getImage().getScaledInstance(600,500,Image.SCALE_DEFAULT));jl[2]=new JLabel(image);image= new ImageIcon("Image/xianjing.PNG"); image.setImage(image.getImage().getScaledInstance(600,500,Image.SCALE_DEFAULT));jl[3]=new JLabel(image);jtp=new JTabbedPane();jtp.add("支付宝支付",jl[0]);jtp.add(" 微信支付  ",jl[1]);jtp.add(" 网银支付  ",jl[2]);jtp.add(" 现金支付  ",jl[3]);this.add(jtp,BorderLayout.CENTER);jb=new JButton();jb.setFont(new Font("宋体",Font.BOLD,20));jb.setText("   完成退出      ");jb.addActionListener(this);jb.setActionCommand("exit");bottomPane=new JPanel();bottomPane.add(jb);this.add(bottomPane,BorderLayout.SOUTH);setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);setVisible(true);  }public void actionPerformed(ActionEvent e){if(e.getActionCommand()=="exit"){this.dispose();}}
}