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『Java课设』JavaSwing+MySQL实现医院智慧点餐系统
- 1.功能介绍
- 2.项目包结构
- 3.数据库设计
- 4.JDBC数据库连接类
- 5.登录选择界面(系统入口)
- 6.管理员页面
- 7.用户选餐界面
1.功能介绍
这个是大二的Java的课程设计的完整版，功能相对之前发的半成品稍稍丰富些。一开始我们还是按照MVC结构写的，写着写着就视图，用户操作逻辑，数据库数据操作就都写在一起了，比如管理员操作界面（View层）就嵌入了SQL语句直接操作数据库了，好在是一个学习过程。
-
系统角色分为用户与管理员
-
用户登录系统可以选购餐品并支付
-
管理员可以登陆系统管理所有的菜品（增删改查）
-
管理所有的订单信息（未完成）
2.项目包结构
3.数据库设计
数据库设计了5个表，分别是用户信息表，管理员信息表，菜品信息表，订单信息表，订单详情表
4.JDBC数据库连接类
不同数据库的连接方式的大同小异，根据开发场景灵活变动就好，我这里用的MySQL8.0所以使用如下两行配置。
private static final String USER = "root";//数据库用户名，一般是root
private static final String PWD = "lx0411";//数据库密码
// 连接mysql5.7
// private static final String URL="jdbc:mysql://localhost:3306/studentgrade";
// private static final String DRIVER="com.mysql.jdbc.Driver"; //mysql5.7
// 如果用的是mysql8.0,
private static final String DRIVER="com.mysql.cj.jdbc.Driver";
private static final String URL= "jdbc:mysql://localhost:3306/catersystem?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=false&allowPublicKeyRetrieval=true";
// 如果用的sqlServer数据库连接
// private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=StudentGrade";
// private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
// private static final String USER="sa";
// private static final String PWD="lxloveth0411";
5.登录选择界面(系统入口)
package view;
import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import handler.LoginChoiceHandler;
public class LoginChoiceView extends JFrame{
/**
*
*/
private static final long serialVersionUID = 1L;
JLabel titleNameLabel=new JLabel("医院智慧选餐系统",JLabel.CENTER);
JPanel jp1=new JPanel();
JPanel jp2=new JPanel(new GridLayout(5,1));
JButton userBtn=new JButton ("用户 登录");
JButton adminBtn=new JButton("管理员登录");
//声明桌面系统托盘SystemTray
public SystemTray systemTray;
public TrayIcon trayIcon;
LoginChoiceHandler loginChoiceHandler;
public LoginChoiceView() {
super("医院智慧选餐系统");
loginChoiceHandler=new LoginChoiceHandler(this);
//设置标题的字体，格式，大小
titleNameLabel.setFont(new Font("华文行楷",Font.PLAIN,40));
titleNameLabel.setPreferredSize(new Dimension(0,80));
Font centerFont=new Font("楷体",Font.PLAIN,20);
userBtn.setFont(centerFont);
adminBtn.setFont(centerFont);
jp1.add(userBtn);
jp1.add(new JPanel());
jp1.add(adminBtn);
jp2.add(new JPanel());
jp2.add(titleNameLabel);
jp2.add(new JPanel());
jp2.add(jp1);
jp2.add(new JPanel());
this.add(jp2);
userBtn.addActionListener(loginChoiceHandler);
adminBtn.addActionListener(loginChoiceHandler);
//判断当前系统是否支持系统托盘
if(SystemTray.isSupported()){
systemTray=SystemTray.getSystemTray();//初始化系统托盘
URL imgUrl = UserLoginView.class.getClassLoader().getResource("LoginView.jpg");
trayIcon=new TrayIcon(new ImageIcon(imgUrl).getImage());//初始化托盘图标
trayIcon.setImageAutoSize(true);//托盘图标可以自动缩放大小
try {
systemTray.add(trayIcon);//将托盘图标加入到系统托盘组件中，并抛出异常
} catch (AWTException e) {
e.printStackTrace();
}
//创建一个事件响应，最小化时销毁资源
this.addWindowListener(new WindowAdapter() {
@Override
public void windowIconified(WindowEvent e) {
LoginChoiceView.this.dispose();
}
});
//托盘事件监听(鼠标单击一次托盘，窗口将会正常显示)
trayIcon.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
int clickCont=e.getClickCount();
if(clickCont==1){
LoginChoiceView.this.setExtendedState(JFrame.NORMAL);
}
LoginChoiceView.this.setVisible(true);
}
});
}
//设置窗口图片
URL imgUrl=UserLoginView.class.getClassLoader().getResource("LoginView.jpg");
setIconImage(new ImageIcon(imgUrl).getImage());
//设置窗口基本参数
setSize(600,400);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new LoginChoiceView();
}
}
6.管理员页面
package view;
import javax.swing.*;
import ext.MainViewTable;
import ext.MainViewTableModel;
import handler.AdminMainHandler;
import req.UserRequest;
import res.TableDTO;
import service.FoodService;
import service.FoodServiceImpl;
import util.DBUtil;
import util.DimensionUtil;
import java.awt.*;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Vector;
public class AdminOperateFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
String adminName;
String adminId;
public String lastPressKey;
JLabel adminNameLabel = new JLabel("管理员名：", JLabel.CENTER);
JPanel centerPanel = new JPanel(new BorderLayout());
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();
JPanel panel3 = new JPanel();
JPanel panel4 = new JPanel();
//增删改查按钮
public JButton btnAdd = new JButton("增加菜品");
public JButton btnSave = new JButton("保存菜品");
JButton btnDelete = new JButton("删除菜品");
JButton btnAlter = new JButton("更改菜品");
JButton btnSearch_Food = new JButton("查看菜品");
//JButton btnSearch_Order = new JButton("查看订单");
//设置字体大小
Font font=new Font("楷体",Font.PLAIN,20);
Dimension dimension = new Dimension(130,30);
//创建一个MainViewTable对象
public MainViewTable mianViewTable=new MainViewTable();
public MainViewTableModel mainViewTableModel;
//创建一个MainOrderTable订单table对象
public MainViewTable mianOrderTable=new MainViewTable();
public MainViewTableModel mainOrderTableModel;
//声明一个MainHandler对象
AdminMainHandler adminMainHandler;
private int pageNow=1;//默认显示第一页
private int pageSize=10;//默认每页显示十条记录
//搜索框与搜索按钮
public JTextField searchField = new JTextField();
JButton searchBt = new JButton("搜索");
JButton exitBt = new JButton("退出");
public AdminOperateFrame(String adminId) {
setTitle("医院营养配餐系统");
this.adminId=adminId;
adminMainHandler = new AdminMainHandler(this);
layNorth(adminId);
layCenter();
layEast();
laySouth();
centerPanel.add(panel1, BorderLayout.NORTH);
centerPanel.add(panel2, BorderLayout.CENTER);
centerPanel.add(panel3, BorderLayout.EAST);
centerPanel.add(panel4, BorderLayout.SOUTH);
add(centerPanel);
init();
}
private void init() {
setSize(600, 400);
setLocationRelativeTo(null);
setBounds(DimensionUtil.getBounds());
//设置窗体完全充满整个屏幕
setExtendedState(JFrame.MAXIMIZED_BOTH);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
}
private void laySouth() {
exitBt.setFont(font);
exitBt.setPreferredSize(new Dimension(200,50));
panel4.add(exitBt);
exitBt.addActionListener(adminMainHandler);
}
private void layEast() {
panel3.setLayout(new FlowLayout());
panel3.setPreferredSize(new Dimension(200,100));
btnAdd.setFont(font);
btnAdd.setPreferredSize(dimension);
btnSave.setFont(font);
btnSave.setPreferredSize(dimension);
btnDelete.setFont(font);
btnDelete.setPreferredSize(dimension);
btnAlter.setFont(font);
btnAlter.setPreferredSize(dimension);
btnSearch_Food.setFont(font);
btnSearch_Food.setPreferredSize(dimension);
//btnSearch_Order.setFont(font);
//btnSearch_Order.setPreferredSize(dimension);
panel3.add(btnAdd);
panel3.add(btnSave);
btnSave.setVisible(false);
panel3.add(btnDelete);
panel3.add(btnAlter);
panel3.add(btnSearch_Food);
//panel3.add(btnSearch_Order);
btnAdd.addActionListener(adminMainHandler);
btnSave.addActionListener(adminMainHandler);
btnDelete.addActionListener(adminMainHandler);
btnAlter.addActionListener(adminMainHandler);
btnSearch_Food.addActionListener(adminMainHandler);
//btnSearch_Order.addActionListener(adminMainHandler);
}
private void layNorth(String adminId) {
panel1.setLayout(new BorderLayout());
selectAdminName(adminId);
adminNameLabel.setText("管理员名："+adminName);
adminNameLabel.setFont(font);
searchField.setFont(font);
searchField.setPreferredSize(dimension);
searchBt.setFont(font);
searchBt.setPreferredSize(new Dimension(200,50));
panel1.add(adminNameLabel, BorderLayout.WEST);
panel1.add(searchField, BorderLayout.CENTER);
panel1.add(searchBt, BorderLayout.EAST);
searchBt.addActionListener(adminMainHandler);
}
private void layCenter() {
//调用数据库数据，创建一个FoodService和UserRequest实例
//获取从数据库中查询到的data与totalCount
FoodService foodService=new FoodServiceImpl();
UserRequest request=new UserRequest();
request.setPageNow(pageNow);
request.setPageSize(pageSize);
request.setSearchKey(searchField.getText().trim());
TableDTO tableDTO = foodService.retrieveFoods(request);
Vector<Vector<Object>> data = tableDTO.getData();
//自定义的MainViewTableModel
mainViewTableModel=MainViewTableModel.assembleModel(data);
//将Table与TableModel关联
mianViewTable.setModel(mainViewTableModel);
//设置渲染方式
mianViewTable.renderRule();
JScrollPane jScrollPane = new JScrollPane(mianViewTable);
panel2.setLayout(new BorderLayout());
panel2.add(jScrollPane, BorderLayout.CENTER);
}
private void selectAdminName(String adminId) {
String sql = "select manaName from managerInfo where manaId = ?";
Connection conn=null;
PreparedStatement ps=null;
ResultSet rs=null;
try {
//连接数据库，获取数据库连接，getConn()方法已经提前在DBUtil中写好
conn = DBUtil.getConn();
System.out.println("数据库连接成功");
//如果连接失败，则返回false
if(conn==null) {
System.out.println("数据库连接失败");
}
ps = conn.prepareStatement(sql);
ps.setString(1, adminId);
rs = ps.executeQuery();
//查询遍历
while(rs.next()) {
adminName = rs.getString(1);
}
} catch (Exception e) {
e.printStackTrace();
}finally {
//关闭资源
DBUtil.closeRs(rs);
DBUtil.closeConn(conn);
DBUtil.closePs(ps);
}
}
public void setPageNow(int pageNow) {
this.pageNow = pageNow;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getPageNow() {
return pageNow;
}
public void reloadTable() {
/*
*调用数据库数据，创建一个FoodService和UserRequest实例
*获取从数据库中查询到的data与totalCount
*查询完后要更新Model的数据
*/
FoodService foodService=new FoodServiceImpl();
UserRequest request=new UserRequest();
request.setPageNow(pageNow);
request.setPageSize(pageSize);
request.setSearchKey(searchField.getText().trim());
TableDTO tableDTO = foodService.retrieveFoods(request);
Vector<Vector<Object>> data = tableDTO.getData();
// 更新调用updataModel实现更新Model
MainViewTableModel.uptadaModel(data);
// 设置渲染方式
mianViewTable.renderRule();
}
public static void main(String[] args) {
new AdminOperateFrame("202016");
}
}
7.用户选餐界面
室友在这里做了一个有趣的处理，点击支付的时候弹出他的微信收款码😁。如果用户想白嫖不支付就退出系统还会有窗口提示（当然并不是真正的需要支付money才能退出系统，你任务管理器一杀我们也没辙，只是考虑了这个场景就实现了这个逻辑）
package view;
/*
* 待解决问题：
* 1.关闭窗口提示还没支付
* 2.同一用户可以选同一个菜品
* 3.list没有实现更新
* 4.table里的库存量没有实现更新
* 5.没有选餐应提示不能实现支付
*/
import javax.swing.*;
import ext.MainViewTable;
import ext.MainViewTableModel;
import handler.UserMainHandler;
import req.UserRequest;
import res.TableDTO;
import service.FoodService;
import service.FoodServiceImpl;
import util.DBUtil;
import util.DimensionUtil;
import java.awt.*;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Vector;
public class UserSelectionFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
public String userName;
public int totalMoney;
public int selId = 1;
public String userId;
JLabel userNameLabel = new JLabel("用户名：", JLabel.CENTER);
JPanel centerPanel = new JPanel(new BorderLayout());
JPanel panel1 = new JPanel();
JPanel panel2 = new JPanel();
JPanel panel3 = new JPanel();
JPanel panel4 = new JPanel();
JPanel panel5 = new JPanel();
//创建一个MainViewTable对象
public MainViewTable mianViewTable=new MainViewTable();
public MainViewTableModel mainViewTableModel;
//声明一个MainHandler对象
UserMainHandler userMainHandler;
private int pageNow=1;//默认显示第一页
private int pageSize=10;//默认每页显示十条记录
JButton btSelect = new JButton("选购");
//搜索框与搜索按钮
Font centerFont=new Font("楷体",Font.PLAIN,20);
Dimension dimension = new Dimension(200,50);
JTextField searchField = new JTextField();
JButton searchBt = new JButton("搜索");
public DefaultListModel<Object> listModel = new DefaultListModel<Object>();
public JList<Object> selectedList = new JList<Object>(listModel);
JLabel selectedLabel = new JLabel("已选菜品：",JLabel.CENTER);
public JLabel totalPriceLabel = new JLabel("总价: 0");
JButton payBt = new JButton("支付");
public UserSelectionFrame(String userId) {
setTitle("医院营养配餐系统");
this.userId = userId;
userMainHandler = new UserMainHandler(this);
//根据用户Id查询出用户名userName,显示在userNameLabel上
selectUesrName(userId);
layNorth();
layCenter();
layWest();
laySouth();
init();
}
private void selectUesrName(String userId) {
String sql = "select userName from userInfo where userId = ?";
Connection conn=null;
PreparedStatement ps=null;
ResultSet rs=null;
try {
//连接数据库，获取数据库连接，getConn()方法已经提前在DBUtil中写好
conn = DBUtil.getConn();
System.out.println("数据库连接成功");
//如果连接失败，则返回false
if(conn==null) {
System.out.println("数据库连接失败");
}
ps = conn.prepareStatement(sql);
ps.setString(1, userId);
rs = ps.executeQuery();
//查询遍历
while(rs.next()) {
userName = rs.getString(1);
}
} catch (Exception e) {
e.printStackTrace();
}finally {
//关闭资源
DBUtil.closeRs(rs);
DBUtil.closeConn(conn);
DBUtil.closePs(ps);
}
}
private void init() {
add(centerPanel);
setSize(600, 400);
setLocationRelativeTo(null);
setBounds(DimensionUtil.getBounds());
//设置窗体完全充满整个屏幕
setExtendedState(JFrame.MAXIMIZED_BOTH);
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
//在关闭窗口的时候强制支付，应该改成提示“暂时还没支付”
addWindowListener(new UserMainHandler(this));
setVisible(true);
}
private void layNorth() {
panel1.setLayout(new BorderLayout());
userNameLabel.setText("用户名："+userName);
panel1.add(userNameLabel, BorderLayout.WEST);
userNameLabel.setPreferredSize(dimension);
userNameLabel.setFont(centerFont);
panel1.add(searchField, BorderLayout.CENTER);
searchField.setPreferredSize(dimension);
searchField.setFont(centerFont);
panel1.add(searchBt, BorderLayout.EAST);
searchBt.setPreferredSize(new Dimension(200,50));
searchBt.setFont(centerFont);
centerPanel.add(panel1, BorderLayout.NORTH);
searchBt.addActionListener(userMainHandler);
}
private void layCenter() {
//调用数据库数据，创建一个FoodService和UserRequest实例
//获取从数据库中查询到的data与totalCount
FoodService foodService=new FoodServiceImpl();
UserRequest request=new UserRequest();
request.setPageNow(pageNow);
request.setPageSize(pageSize);
request.setSearchKey(searchField.getText().trim());
TableDTO tableDTO = foodService.retrieveFoods(request);
Vector<Vector<Object>> data = tableDTO.getData();
showPreNext(tableDTO.getTotalCount());
panel2.setLayout(new BorderLayout());
//自定义的MainViewTableModel
mainViewTableModel=MainViewTableModel.assembleModel(data);
//将Table与TableModel关联
mianViewTable.setModel(mainViewTableModel);
//设置渲染方式
mianViewTable.renderRule();
JScrollPane jScrollPane = new JScrollPane(mianViewTable);
panel2.add(jScrollPane,BorderLayout.CENTER);
btSelect.setPreferredSize(new Dimension(150,50));
btSelect.setFont(centerFont);
panel5.add(btSelect);
panel2.add(panel5, BorderLayout.EAST);
centerPanel.add(panel2, BorderLayout.CENTER);
btSelect.addActionListener(userMainHandler);
}
private void layWest() {
panel3.setLayout(new BorderLayout());
selectedList.setPreferredSize(dimension);
selectedList.setFont(centerFont);
panel3.add(selectedLabel, BorderLayout.NORTH);
selectedLabel.setPreferredSize(dimension);
selectedLabel.setFont(centerFont);
panel3.add(selectedList, BorderLayout.CENTER);
centerPanel.add(panel3, BorderLayout.WEST);
}
private void laySouth() {
totalPriceLabel.setFont(centerFont);
panel4.add(totalPriceLabel);
payBt.setFont(centerFont);
panel4.add(payBt);
centerPanel.add(panel4, BorderLayout.SOUTH);
payBt.addActionListener(userMainHandler);
}
private void showPreNext(int totalCount) {
if(totalCount%pageSize==0) {
}else {
}
}
public void setPageNow(int pageNow) {
this.pageNow = pageNow;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getPageNow() {
return pageNow;
}
public void reloadTable() {
/*
*调用数据库数据，创建一个FoodService和UserRequest实例
*获取从数据库中查询到的data与totalCount
*查询完后要更新Model的数据
*/
FoodService foodService=new FoodServiceImpl();
UserRequest request=new UserRequest();
request.setPageNow(pageNow);
request.setPageSize(pageSize);
request.setSearchKey(searchField.getText().trim());
TableDTO tableDTO = foodService.retrieveFoods(request);
Vector<Vector<Object>> data = tableDTO.getData();
// 更新调用updataModel实现更新Model
MainViewTableModel.uptadaModel(data);
// 设置渲染方式
mianViewTable.renderRule();
// 调用上一页与下一页按钮是否可见
showPreNext(tableDTO.getTotalCount());
}
}
{
return pageNow;
}
public void reloadTable() {
/*
*调用数据库数据，创建一个FoodService和UserRequest实例
*获取从数据库中查询到的data与totalCount
*查询完后要更新Model的数据
*/
FoodService foodService=new FoodServiceImpl();
UserRequest request=new UserRequest();
request.setPageNow(pageNow);
request.setPageSize(pageSize);
request.setSearchKey(searchField.getText().trim());
TableDTO tableDTO = foodService.retrieveFoods(request);
Vector<Vector<Object>> data = tableDTO.getData();
// 更新调用updataModel实现更新Model
MainViewTableModel.uptadaModel(data);
// 设置渲染方式
mianViewTable.renderRule();
// 调用上一页与下一页按钮是否可见
showPreNext(tableDTO.getTotalCount());
}
}
