期末快到了，不知道各位小伙伴有没有在为自己的课程设计还没完成而发愁，不用担心，这篇文章将手把手带你完成一个餐饮管理系统。

1.顾客点餐部分

1.1界面部分

1.1收集顾客信息

这里收集到了顾客的电话和就餐人数信息后，会将对应信息收集到对应的数据表中

/**
 * 起始页面,收取顾客联系电话和就餐人数信息并点击点餐后跳转CustomerOrderWindow页面
 */
public class CustomerIndex extends JFrame implements ActionListener {
    Image image;
    JPanel jp,jp_phone,jp_person;
    JTextField jp_phone_jtf,jtf_person;
    JLabel jp_phone_jl,jl_person;
    JButton jb;
    String phone;//传给点餐的那个页面
    String number;
    public static void main(String[] args) {
        CustomerIndex index = new CustomerIndex();
    }

    public CustomerIndex() {
        jp_phone_jl=new JLabel("请输入联系电话");
        jp_phone_jl.setFont(MyTools.f3);
        jp_phone_jtf=new JTextField(20);
        jb = new JButton("点餐");
        jb.addActionListener(this);
        jb.setFont(MyTools.f3);
        jp_phone=new JPanel();
        jp_phone.add(jp_phone_jl);
        jp_phone.add(jp_phone_jtf);
        jp_phone.add(jb);

        jp_person=new JPanel();
        jl_person=new JLabel("请输入就餐人数");
        jl_person.setFont(MyTools.f3);
        jtf_person=new JTextField(20);
        jp_person.add(jl_person);
        jp_person.add(jtf_person);

        jp = new JPanel(new BorderLayout());

        image = Toolkit.getDefaultToolkit().getImage("image/二维码.png");//背景图片
        ImagePanel ip = new ImagePanel(image);

        jp.add(jp_phone,"South");
        jp.add(ip, "Center");
        jp.add(jp_person,"North");


        this.add(jp);
        this.setSize(500, 500);
        /**
         * 确定JWindow的初始位置
         */
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==jb){
            phone = jp_phone_jtf.getText();
            number= jtf_person.getText();
            Connection connection=null;
            PreparedStatement preparedStatement=null;
            ResultSet resultSet=null;
            try {
                Properties properties = new Properties();
                properties.load(new FileInputStream("src\\mysql.properties"));
                //获取相关的值
                String user = properties.getProperty("user");
                String password = properties.getProperty("password");
                String driver = properties.getProperty("driver");
                String url = properties.getProperty("url");
                //1. 注册驱动
                Class.forName(driver);//建议写上
                //2. 得到连接
                connection = DriverManager.getConnection(url, user, password);
                //3. 得到Statement
                String sql="insert into 顾客(联系电话) values (?)";
                preparedStatement = connection.prepareStatement(sql);
                preparedStatement.setString(1,phone);
                preparedStatement.executeUpdate();
                this.dispose();
            } catch (IOException ex) {
                ex.printStackTrace();
            } catch (ClassNotFoundException ex) {
                ex.printStackTrace();
            } catch (SQLException ex) {
                ex.printStackTrace();
            } finally {
                try {
                    if(resultSet!=null){
                        resultSet.close();
                    }
                    if(preparedStatement!=null) {
                        preparedStatement.close();
                    }
                    if(connection!=null) {
                        connection.close();
                    }
                } catch (SQLException e1) {
                    e1.printStackTrace();
                }
            }
            new CustomerOrderWindow(phone,number);
        }
    }
}

 1.2顾客选择餐桌

/**
 * 起始页面,收取顾客联系电话和就餐人数信息并点击点餐后跳转CustomerOrderWindow页面
 */
public class CustomerIndex extends JFrame implements ActionListener {
    Image image;
    JPanel jp,jp_phone,jp_person;
    JTextField jp_phone_jtf,jtf_person;
    JLabel jp_phone_jl,jl_person;
    JButton jb;
    String phone;//传给点餐的那个页面
    String number;
    public static void main(String[] args) {
        CustomerIndex index = new CustomerIndex();
    }

    public CustomerIndex() {
        jp_phone_jl=new JLabel("请输入联系电话");
        jp_phone_jl.setFont(MyTools.f3);
        jp_phone_jtf=new JTextField(20);
        jb = new JButton("点餐");
        jb.addActionListener(this);
        jb.setFont(MyTools.f3);
        jp_phone=new JPanel();
        jp_phone.add(jp_phone_jl);
        jp_phone.add(jp_phone_jtf);
        jp_phone.add(jb);

        jp_person=new JPanel();
        jl_person=new JLabel("请输入就餐人数");
        jl_person.setFont(MyTools.f3);
        jtf_person=new JTextField(20);
        jp_person.add(jl_person);
        jp_person.add(jtf_person);

        jp = new JPanel(new BorderLayout());

        image = Toolkit.getDefaultToolkit().getImage("image/二维码.png");//背景图片
        ImagePanel ip = new ImagePanel(image);

        jp.add(jp_phone,"South");
        jp.add(ip, "Center");
        jp.add(jp_person,"North");


        this.add(jp);
        this.setSize(500, 500);
        /**
         * 确定JWindow的初始位置
         */
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==jb){
            phone = jp_phone_jtf.getText();
            number= jtf_person.getText();
            Connection connection=null;
            PreparedStatement preparedStatement=null;
            ResultSet resultSet=null;
            try {
                Properties properties = new Properties();
                properties.load(new FileInputStream("src\\mysql.properties"));
                //获取相关的值
                String user = properties.getProperty("user");
                String password = properties.getProperty("password");
                String driver = properties.getProperty("driver");
                String url = properties.getProperty("url");
                //1. 注册驱动
                Class.forName(driver);//建议写上
                //2. 得到连接
                connection = DriverManager.getConnection(url, user, password);
                //3. 得到Statement
                String sql="insert into 顾客(联系电话) values (?)";
                preparedStatement = connection.prepareStatement(sql);
                preparedStatement.setString(1,phone);
                preparedStatement.executeUpdate();
                this.dispose();
            } catch (IOException ex) {
                ex.printStackTrace();
            } catch (ClassNotFoundException ex) {
                ex.printStackTrace();
            } catch (SQLException ex) {
                ex.printStackTrace();
            } finally {
                try {
                    if(resultSet!=null){
                        resultSet.close();
                    }
                    if(preparedStatement!=null) {
                        preparedStatement.close();
                    }
                    if(connection!=null) {
                        connection.close();
                    }
                } catch (SQLException e1) {
                    e1.printStackTrace();
                }
            }
            new CustomerOrderWindow(phone,number);
        }
    }
}

1.3顾客开始点菜+加入餐车+支付

/**
 * 菜单表格，点击加入菜单按钮后弹出CanChe页面
 */
public class Menu extends JFrame implements ActionListener{
    //定义需要的组件
    /**
     * p1是最上面的查找
     * p2是中间的表格
     * p3是最下面的加入餐车，点餐完毕
     */
    JPanel p1,p2,p3,p4,p5;
    JLabel p1_lab1,p3_lab1;
    JTextField p1_jtf1;
    JButton p1_jb1,p1_jb1_refresh,p3_jb_add,p3_jb_over;
    //用于显示人事信息的表格
    JTable jtable;
    //滚动面板
    JScrollPane jsp;
    Model customermodel;
    MenuModel mm;//做类的成员变量


//    public static void main(String[] args) {
        CustomerOrderWindow w=new CustomerOrderWindow("123456");
        new Menu(w,"123456");
//    }

    /**
     * 点餐界面
     * @param COwindow 餐桌界面
     * @param phone 顾客的电话
     */
    public Menu(CustomerOrderWindow COwindow,int desk,String phone) {
        /**
         * 通过电话查询到顾客编号
         */
        Menu MenuWindow=this;
        customermodel=new Model();
        String [] params={phone};
        customermodel.query("select * from 顾客 where 联系电话=?",params);
        //此时customermodel模型里面只有联系方式为phone的这一行
        //下面通过getValueAt获取顾客编号即可


        //创建需要的组件
        p1=new JPanel(new FlowLayout(FlowLayout.CENTER));
        p1_lab1=new JLabel("请输入想查询的菜名");
        p1_lab1.setFont(MyTools.f3);
        p1_jtf1=new JTextField(20);
        /**
         * 查询
         */
        p1_jb1=new JButton("查询");
        p1_jb1.setFont(MyTools.f3);
        p1_jb1.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("用户希望查询：");
                //因为把对表的数据封装到StuModel中，我们就可以比较简单的完成查询
                String name = p1_jtf1.getText().trim();//把文本框中的内容赋给name
                String id = p1_jtf1.getText().trim();//把文本框中的内容赋给id

                //写一个sql语句
//                String sql = "select * from 人事资料 where stuName='" + name + "' and 1 =? ";
                mm=new MenuModel();
                String [] params={"1"};
                //关闭详细信息界面后显示的信息，要与点击之前的保持一致
                mm.init("select 菜名,价格 from 菜单 where 菜名='"+name+"' and 1=?",params);//精准查询
//                mm.init("select * from 人事资料 where 姓名 LIKE'"+name+"%' and 1=?",params);//模糊查询
//                mm.init("select * from 人事资料 where 员工号='"+id+"' and 1=?",params);//精准查询

                jtable.setModel(mm);
                jsp=new JScrollPane(jtable);
                p2.add(jsp);
            }
        });

        p1_jb1_refresh=new JButton("刷新");
        p1_jb1_refresh.setFont(MyTools.f3);
        p1_jb1_refresh.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("用户点击了刷新");
                mm=new MenuModel();
                String [] params={"1"};
                //关闭详细信息界面后显示的信息，要与点击之前的保持一致
                mm.query("select 菜名,价格 from 菜单 where 1=?",params);
                jtable.setModel(mm);
                jsp=new JScrollPane(jtable);
                p2.add(jsp);
            }
        });

        //加入到p1
        p1.add(p1_lab1);
        p1.add(p1_jtf1);
        p1.add(p1_jb1);
        p1.add(p1_jb1_refresh);
//        p1.add(p1_jb1_refresh);

        /**
         * 处理中间的
         */
        mm=new MenuModel();
        String [] param={"1"};
        mm.query("select 菜名,价格 from 菜单 where 1=?",param);
        jtable=new JTable(mm);
        jtable.setSize(500,500);
        p2=new JPanel();
        /**
         * 将jtable放入滚动面板才能看到列名
         * p2.add(jtable);//这样不行
         */
        jsp=new JScrollPane(jtable);
        p2.add(jsp);
        /**
         * 加入餐车
         */
        p3_jb_add=new JButton("加入餐车");
        p3_jb_add.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                int selectedRow = jtable.getSelectedRow();//返回选择的行数
                if(selectedRow==-1){
                    JOptionPane.showMessageDialog(COwindow,"请点餐","提示",JOptionPane.INFORMATION_MESSAGE);
                    return ;
                }
                String c_id=(String)customermodel.getValueAt(0,0);
//                System.out.println(c_id+"号顾客");
                String [] params={"1"};
                mm.query("select 菜名,价格 from 菜单 where 1 = ?",params);
                new MenuAddCanChe(mm,selectedRow,Integer.parseInt(c_id));
//                new CanChe(Integer.parseInt(c_id));

                new CanChe(MenuWindow,COwindow,Integer.parseInt(c_id),desk,"满桌");

                System.out.println(" 加入餐车");
            }
        });

        p3_jb_add.setFont(MyTools.f3);

        p3=new JPanel();
        p3.add(p3_jb_add);
//        p3.add(p3_jb_over);


        this.setTitle("请点餐");

        this.add(p1,"North");
        this.add(p2,"Center");
        this.add(p3,"South");

        int width = Toolkit.getDefaultToolkit().getScreenSize().width;
        int height = Toolkit.getDefaultToolkit().getScreenSize().height;
        this.setLocation(width/2-800,height/2-300);
        this.setSize(800,600);
        this.setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {

    }

}
class MenuAddCanChe{
    Model customermodel;
    String caiming;
    String price;
    public MenuAddCanChe(MenuModel mm,int selectedRow,int c_id) {
        customermodel=new Model();
        String [] params={"1"};
        customermodel.query("select * from 顾客 where 1=?",params);

        caiming=(String)mm.getValueAt(selectedRow,0);
        System.out.print(caiming+" ");
        price=(String)mm.getValueAt(selectedRow,1);//这里的price是String类型,后面记得转换
        System.out.print(price);

        Connection connection=null;
        PreparedStatement preparedStatement=null;
        ResultSet resultSet=null;
        try {
            Properties properties = new Properties();
            properties.load(new FileInputStream("src\\mysql.properties"));
            //获取相关的值
            String user = properties.getProperty("user");
            String password = properties.getProperty("password");
            String driver = properties.getProperty("driver");
            String url = properties.getProperty("url");
            //1. 注册驱动
            Class.forName(driver);//建议写上
            //2. 得到连接
            connection = DriverManager.getConnection(url, user, password);
            //3. 得到Statement
            String sql="insert into 餐车(菜名,价格,顾客编号) values(?,?,?)";
//            String sql="update 人事资料 set 姓名=?,性别=?,年龄=?,身份证号=?,联系电话=?,职位=? where 员工号=?";
            preparedStatement = connection.prepareStatement(sql);

            preparedStatement.setString(1,caiming);
            preparedStatement.setInt(2,Integer.parseInt(price));
            preparedStatement.setInt(3,c_id);

//            preparedStatement.setInt(3,id);

            preparedStatement.executeUpdate();

        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if(resultSet!=null){
                    resultSet.close();
                }
                if(preparedStatement!=null) {
                    preparedStatement.close();
                }
                if(connection!=null) {
                    connection.close();
                }
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
        }
    }
}

/**
 * 餐车页面，点击点餐完毕后跳出Consume页面
 */
public class CanChe extends JFrame implements ActionListener {
    JButton jb_select,jb_pay,jb_reflesh;
    JPanel p1,p2,p3;
    JTable jtable;
    JScrollPane jsp;
    MenuModel mm;
    int c_id;
    int desk;
    String state;

//    public static void main(String[] args) {
        new CanChe(40,5,"满桌");
//    }

    public CanChe(Menu MenuWindow,CustomerOrderWindow COwindow,int c_id,int desk,String state){
        CanChe CanCheWindow=this;
        this.c_id = c_id;
        this.desk = desk;
        this.state = state;
        /**
         * 表格
         */
        mm=new MenuModel();
        int [] params={c_id};
        mm.query("select 菜名,价格,菜品数量 from 餐车 where 顾客编号=?",params);

        jtable=new JTable(mm);
        jsp=new JScrollPane(jtable);
        p1=new JPanel();
        p1.add(jsp);


        jb_pay=new JButton("点餐完毕");
        jb_pay.setFont(MyTools.f3);
        jb_pay.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                modifyState();
                new Consume(CanCheWindow,MenuWindow,COwindow,c_id,desk,"空闲");
            }
        });

        p2=new JPanel();
//        p2.add(jb_select);
        p2.add(jb_pay);

        this.setTitle("您已选择如下菜品");
        this.setLayout(new BorderLayout());
        this.add(p1,"Center");
        this.add(p2,"South");
//        this.add(p3,"North");
        int width = Toolkit.getDefaultToolkit().getScreenSize().width;
        int height = Toolkit.getDefaultToolkit().getScreenSize().height;
        this.setLocation(width/2,height/2-300);
        this.setSize(800,600);
        this.setVisible(true);
    }
    public void modifyState(){
        System.out.println("用户提交了菜单");
        Connection connection=null;
        PreparedStatement preparedStatement=null;
        ResultSet resultSet=null;
        try {
            Properties properties = new Properties();
            properties.load(new FileInputStream("src\\mysql.properties"));
            //获取相关的值
            String user = properties.getProperty("user");
            String password = properties.getProperty("password");
            String driver = properties.getProperty("driver");
            String url = properties.getProperty("url");
            //1. 注册驱动
            Class.forName(driver);//建议写上
            //2. 得到连接
            connection = DriverManager.getConnection(url, user, password);
            //3. 得到Statement
            String sql="update 餐桌 set 使用状态=? where 餐桌号=?";
            preparedStatement = connection.prepareStatement(sql);
            preparedStatement.setString(1,state);
            preparedStatement.setInt(2,desk);
            preparedStatement.executeUpdate();

        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if(resultSet!=null){
                    resultSet.close();
                }
                if(preparedStatement!=null) {
                    preparedStatement.close();
                }
                if(connection!=null) {
                    connection.close();
                }
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
        }
    }
    @Override
    public void actionPerformed(ActionEvent e) {

    }
}

public class Consume extends JFrame implements ActionListener {
    JLabel jl;
    JButton jb_ensure;
    JPanel p1,p2;
    int desk;
    String state;
    String total_price;
    int c_id;
    int num;
//    public static void main(String[] args) {
//        new Consume(15,2,"满桌");
//    }
    public Consume(CanChe CanCheWindow,Menu MenuWindow,CustomerOrderWindow COWindow,int c_id,int desk,String state) {
        this.num=0;
        this.c_id = c_id;
        this.desk=desk;
        this.state=state;
        p1=new JPanel();
        p2=new JPanel();
        MenuModel mm=new MenuModel();
        int [] params={c_id};
        mm.query("select sum(价格) from 餐车 where 顾客编号=?",params);
        total_price=(String)mm.getValueAt(0,0);
        System.out.println("该顾客共消费了"+total_price+"元");
        jl=new JLabel("你共消费了"+total_price+"元");
        jl.setFont(MyTools.f3);

        jb_ensure=new JButton("支付");
        jb_ensure.setFont(MyTools.f3);
        jb_ensure.addActionListener(new ActionListener(){
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("用户已完成支付");
                modifyState();
                addDingdan();
                CanCheWindow.dispose();
                MenuWindow.dispose();
                COWindow.dispose();
            }
        });

        p1.add(jl);
        p2.add(jb_ensure);

        this.setLayout(new BorderLayout());
        this.add(p1,"Center");
        this.add(p2,"South");
        this.setTitle("这是你的消费账单");
        int width = Toolkit.getDefaultToolkit().getScreenSize().width;
        int height = Toolkit.getDefaultToolkit().getScreenSize().height;
        this.setLocation(width/2-200,0);
        this.setSize(400, 200);
        this.setVisible(true);

    }


    /**
     * 添加数据进订单表
     */
    public void addDingdan(){
        Connection connection=null;
        PreparedStatement preparedStatement=null;
        ResultSet resultSet=null;
        try {
            Properties properties = new Properties();
            properties.load(new FileInputStream("src\\mysql.properties"));
            //获取相关的值
            String user = properties.getProperty("user");
            String password = properties.getProperty("password");
            String driver = properties.getProperty("driver");
            String url = properties.getProperty("url");
            //1. 注册驱动
            Class.forName(driver);//建议写上
            //2. 得到连接
            connection = DriverManager.getConnection(url, user, password);
            //3. 得到Statement
            String sql="insert into 订单(消费金额,顾客编号) values (?,?)";
            preparedStatement = connection.prepareStatement(sql);
            preparedStatement.setString(1,total_price);
            preparedStatement.setInt(2,c_id);
            preparedStatement.executeUpdate();
            this.dispose();
        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if(resultSet!=null){
                    resultSet.close();
                }
                if(preparedStatement!=null) {
                    preparedStatement.close();
                }
                if(connection!=null) {
                    connection.close();
                }
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
        }
    }
    /**
     * 修改餐桌状态为空闲并将就餐人数设置回0
     */
    public void modifyState(){
        Connection connection=null;
        PreparedStatement preparedStatement=null;
        ResultSet resultSet=null;
        try {
            Properties properties = new Properties();
            properties.load(new FileInputStream("src\\mysql.properties"));
            //获取相关的值
            String user = properties.getProperty("user");
            String password = properties.getProperty("password");
            String driver = properties.getProperty("driver");
            String url = properties.getProperty("url");
            //1. 注册驱动
            Class.forName(driver);//建议写上
            //2. 得到连接
            connection = DriverManager.getConnection(url, user, password);
            //3. 得到Statement
            String sql="update 餐桌 set 使用状态=?,就餐人数=? where 餐桌号=?";
            preparedStatement = connection.prepareStatement(sql);
            preparedStatement.setString(1,state);
            preparedStatement.setInt(2,num);
            preparedStatement.setInt(3,desk);
            preparedStatement.executeUpdate();

        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        } finally {
            try {
                if(resultSet!=null){
                    resultSet.close();
                }
                if(preparedStatement!=null) {
                    preparedStatement.close();
                }
                if(connection!=null) {
                    connection.close();
                }
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
        }
    }
    @Override
    public void actionPerformed(ActionEvent e) {

    }
}

1.2数据库部分

 

2.后台管理部分

2.1界面部分

2.1.1用户登录（员工账号和经理账号因为权限不同会有不同界面，下面只展示经理界面）

package com.restaurant.view;

import com.restaurant.model.UserModel;
import com.restaurant.tools.MyTools;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

/**
 * 用户登录界面
 */
public class UserLogin extends JDialog implements ActionListener {

    JLabel jl1,jl2,jl3;
    JTextField jName;
    JPasswordField jPassword;
    JButton jConf,jCancel;

    public static void main(String[] args) {
        UserLogin userLogin = new UserLogin();
    }

    public UserLogin() {
        //把一个组件放入JFrame或者JDialog可以直接放，也可以先放到Container
        Container ct=this.getContentPane();
        //空布局
        this.setLayout(null);
        //创建各组件
        jl1=new JLabel("请输入用户名：");
//        jl1.setBounds(60,190,150,30);
        jl1.setBounds(60,140,150,30);
        jl1.setFont(MyTools.f1);
        ct.add(jl1);

        jName=new JTextField(20);
        jName.setFocusable(true);
//        jName.setBounds(180,190,120,30);
        jName.setBounds(180,140,120,30);
        jName.setBorder(BorderFactory.createLoweredBevelBorder());//下凹
        ct.add(jName);

        jl2=new JLabel("(或员工号)");
        jl2.setForeground(Color.red);//前景色
        jl2.setFont(MyTools.f2);
//        jl2.setBounds(100,210,100,30);
        jl2.setBounds(100,160,100,30);
        ct.add(jl2);

        jl3=new JLabel("请输入密码：");
//        jl3.setBounds(60,240,150,30);
        jl3.setBounds(60,190,150,30);
        jl3.setFont(MyTools.f1);
        ct.add(jl3);

        jPassword=new JPasswordField(20);
//        jPassword.setBounds(180,240,120,30);
        jPassword.setBounds(180,190,120,30);

        jPassword.setBorder(BorderFactory.createLoweredBevelBorder());
        ct.add(jPassword);

        jConf=new JButton("确定");
        jConf.setFont(MyTools.f1);
//        jConf.setBounds(110,300,70,30);
        jConf.setBounds(110,250,70,30);

        ct.add(jConf);
        jConf.addActionListener(this);

        jCancel=new JButton("取消");
//        jCancel.setBounds(210,300,70,30);
        jCancel.setBounds(210,250,70,30);

        ct.add(jCancel);
        jCancel.addActionListener(this);

        //创建一个BackImage对象
        BackImage bi = new BackImage();

        //把位置确定
        bi.setBounds(0,0,360,360);
        //不使用上下框
        ct.add(bi);
        //this.add(bi);
        this.setUndecorated(true);
        this.setSize(360,360);
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }

    /**
     * 响应用户登录请求
     * @param e
     */
    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==jConf){
            //取出员工号，密码
            String u=this.jName.getText().trim();
            String p=new String(this.jPassword.getPassword());
            UserModel um=new UserModel();
            String res=um.checkUser(u,p);
            //调试
            System.out.println(res);

            if(res.equals("系统管理员")||res.equals("经理")){
                new Window1();
                this.dispose();
            }else if(res.equals("员工")){
                new Windows2();
                this.dispose();
            }else{
                JOptionPane.showMessageDialog(this,"你无权登录或用户名密码错误","登陆提示",JOptionPane.ERROR_MESSAGE);
                return ;
            }
        }else if(e.getSource()==jCancel){
            this.dispose();
            System.exit(0);
        }
    }

    private class BackImage extends JPanel{
        Image im;
        public BackImage(){
            try {
                im= ImageIO.read(new File("image/login.jpg"));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        public void paintComponent(Graphics g){
            g.drawImage(im,0,0,360,360,this);
        }
    }

}

 2.1.2后台管理主界面

 

 

 

 

 

        后续代码就不做公布了，太长了

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大家可以去这里下载源码，希望各位小伙伴觉得不错的话可以给我一个star。

        希望对大家有所帮助。