本系统实现的以下功能
管理员登录系统,对商品信息的增删改查,统计商品的总价及库存。
JDK版本:1.8
存储数据形式:TXT存储
package com.sjsq.dao;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import com.sjsq.model.User;
import com.sjsq.util.FileUtils;
public class UserDao {
private static final String fileName = "user.txt";
/**
* 写文件
*
* @param list
* @return
*/
public static String addUser(User u) {
StringBuffer sb = new StringBuffer();
sb.append(u.getUsername() + " " + u.getPassword() + "\r\n");
return sb.toString();
}
public static List<User> StringToList(String s) {
List<User> list = new ArrayList<>();
String[] lines = s.split("\r\n");
for (String line : lines) {
String[] stu = line.split(" ");
list.add(new User(stu[0], stu[1]));
}
return list;
}
/**
* 登录验证
*
* @param username
* @param password
* @return
* @throws IOException
*/
public static boolean auth(String username, String password) {
try {
File file = new File(fileName);
String content = FileUtils.readTxtFile(file);
List<User> list = UserDao.StringToList(content);
System.out.println(list);
boolean exist = list.contains(new User(username, password));
return exist;
} catch (IOException e) {
return false;
}
}
public static void addTestData() {
try {
File file = new File(fileName);
if (!file.exists()) {
String add = UserDao.addUser(new User("admin", "123456"));
FileUtils.writeTxtFile(add, file, true);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
package com.sjsq.frame;
import com.sjsq.dao.GoodsDao;
import com.sjsq.dao.UserDao;
/**
* 启动类
*
* @author Administrator
*
*/
public class StartMain {
public static void main(String[] args) {
// 启动前先创建测试数据文件(默认账号:admin 默认密码:123456)
//UserDao.addTestData();
//GoodsDao.addTestData();
new LoginFrame();
}
}
package com.sjsq.frame;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import com.sjsq.dao.UserDao;
/**
* 登录框架 2019年6月6日18:04:57
*
* @author Administrator
*
*/
public class LoginFrame extends Frame {
private static final long serialVersionUID = 1L;
private JFrame jFrame = new JFrame("登录");
private Container c = jFrame.getContentPane();
private JLabel a1 = new JLabel("用户名");
// 默认账号
private JTextField username = new JTextField("admin");
private JLabel a2 = new JLabel("密 码");
// 默认密码
private JPasswordField password = new JPasswordField("123456");
private JButton okbtn = new JButton("登录");
private JButton cancelbtn = new JButton("重置");
public LoginFrame() {
// 设置窗体的位置及大小
jFrame.setBounds(600, 200, 300, 220);
// 设置一层相当于桌布的东西
c.setLayout(new BorderLayout());// 布局管理器
// 设置按下右上角X号后关闭
jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 初始化--往窗体里放其他控件
jFrame.setLocationRelativeTo(null);// 窗
// 标题部分
JPanel titlePanel = new JPanel();
titlePanel.setLayout(new FlowLayout());
titlePanel.add(new JLabel("超市商品管理系统 "));
c.add(titlePanel, "North");
// 输入部分-
JPanel fieldPanel = new JPanel();
fieldPanel.setLayout(null);
a1.setBounds(50, 20, 50, 20);
a2.setBounds(50, 60, 50, 20);
fieldPanel.add(a1);
fieldPanel.add(a2);
username.setBounds(110, 20, 120, 20);
password.setBounds(110, 60, 120, 20);
fieldPanel.add(username);
fieldPanel.add(password);
c.add(fieldPanel, "Center");
// 按钮部分
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout());
buttonPanel.add(okbtn);
buttonPanel.add(cancelbtn);
c.add(buttonPanel, "South");
// 设置窗体可见
jFrame.setVisible(true);
// 确认按下去获取
okbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
String uname = username.getText();
String pwd = String.valueOf(password.getPassword());
boolean flag = UserDao.auth(uname, pwd);
if (flag) {
jFrame.setVisible(false);
JOptionPane.showMessageDialog(null, "恭喜您,登录成功!");
MainFrame m = new MainFrame();
m.setVisible(true);
// 窗口居中
m.setLocationRelativeTo(null);
} else {
JOptionPane.showMessageDialog(null, "登录失败,账号或密码错误");
}
} catch (HeadlessException e1) {
username.setText("");
password.setText("");
JOptionPane.showMessageDialog(null, "登录失败");
}
}
});
// 取消按下去清空
cancelbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
username.setText("");
password.setText("");
}
});
}
}
package com.sjsq.frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableModel;
import com.sjsq.dao.GoodsDao;
import com.sjsq.model.Goods;
public class MainFrame extends JFrame {
private JPanel contentPane;
private JTable table;
private String[] columnCount = {
"序号", "编号", "名称", "单价", "数量", "总价" };
public static MainFrame frame;
List<Goods> list;
/**
* Create the frame.
*/
public MainFrame() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setTitle("超市商品管理系统 ");
setBounds(100, 100, 764, 469);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(29, 58, 692, 332);
contentPane.add(scrollPane);
table = new JTable();
scrollPane.setViewportView(table);
JButton button = new JButton("增加");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new AddFrame();
quaryAll();
}
});
button.setBounds(40, 22, 93, 23);
contentPane.add(button);
JButton button_1 = new JButton("删除");
button_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int row = table.getSelectedRow();
if (row == -1) {
JOptionPane.showMessageDialog(null, "请选择一行");
return;
}
String id = list.get(row).getId();
GoodsDao.delete(id);
JOptionPane.showMessageDialog(null, "删除成功");
quaryAll();
}
});
button_1.setBounds(180, 22, 93, 23);
contentPane.add(button_1);
JButton button_2 = new JButton("修改");
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int row = table.getSelectedRow();
if (row == -1) {
JOptionPane.showMessageDialog(null, "请选择一行");
return;
}
String id = (String) table.getModel().getValueAt(row, 0);
String bh = (String) table.getModel().getValueAt(row, 1);
String name = (String) table.getModel().getValueAt(row, 2);
String price = (String) table.getModel().getValueAt(row, 3);
String number = (String) table.getModel().getValueAt(row, 4);
new UpdateFrame(new Goods(id, bh, name, Double.parseDouble(price), Integer.valueOf(number)));
}
});
button_2.setBounds(320, 22, 93, 23);
contentPane.add(button_2);
JButton button_3 = new JButton("查询");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
quaryAll();
}
});
button_3.setBounds(460, 22, 93, 23);
contentPane.add(button_3);
JButton button_4 = new JButton("统计");
button_4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println("统计");
new StatisticalFrame();
}
});
button_4.setBounds(600, 22, 93, 23);
contentPane.add(button_4);
quaryAll();
}
// 查询
public void quaryAll() {
list = GoodsDao.query();
// 表格中的内容,是一个二维数组
int size = list.size();
String[][] data = new String[size][6];
for (int i = 0; i < data.length; i++) {
for (int j = 0; j < data[i].length; j++) {
data[i][0] = list.get(i).getId();
data[i][1] = list.get(i).getBh();
data[i][2] = list.get(i).getName();
data[i][3] = list.get(i).getPrice() + "";
data[i][4] = list.get(i).getNumber() + "";
data[i][5] = list.get(i).getTotal() + "";
}
}
table.setModel(new DefaultTableModel(data, columnCount));
}
}
package com.sjsq.frame;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.print.Book;
import java.util.Random;
import java.util.UUID;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.sjsq.dao.GoodsDao;
import com.sjsq.model.Goods;
import com.sjsq.model.User;
import com.sjsq.util.StrUtils;
/**
* 图书修改框架 2019年6月6日18:04:53
*
* @author Administrator
*
*/
public class AddFrame extends Frame {
private static final long serialVersionUID = 1L;
public AddFrame() {
JFrame jFrame = new JFrame("新增");
Container c = jFrame.getContentPane();
JLabel a2 = new JLabel("商品名称");
JTextField mc = new JTextField();
JLabel a3 = new JLabel("商品单价");
JTextField dj = new JTextField();
JLabel a4 = new JLabel("商品数量");
JTextField sl = new JTextField();
JButton okbtn = new JButton("新增");
JButton cancelbtn = new JButton("重置");
// 设置窗体的位置及大小
jFrame.setBounds(600, 200, 300, 250);
// 设置一层相当于桌布的东西
c.setLayout(new BorderLayout());// 布局管理器
// 设置按下右上角X号后关闭
jFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// 初始化--往窗体里放其他控件
jFrame.setLocationRelativeTo(null);// 窗
/*标题部分--North*/
JPanel titlePanel = new JPanel();
titlePanel.setLayout(new FlowLayout());
titlePanel.add(new JLabel("新增商品"));
c.add(titlePanel, "North");
/*输入部分--Center*/
JPanel fieldPanel = new JPanel();
fieldPanel.setLayout(null);
a2.setBounds(50, 20, 100, 20);
a3.setBounds(50, 60, 100, 20);
a4.setBounds(50, 100, 100, 20);
fieldPanel.add(a2);
fieldPanel.add(a3);
fieldPanel.add(a4);
mc.setBounds(110, 20, 120, 20);
dj.setBounds(110, 60, 120, 20);
sl.setBounds(110, 100, 120, 20);
fieldPanel.add(mc);
fieldPanel.add(dj);
fieldPanel.add(sl);
c.add(fieldPanel, "Center");
/*按钮部分--South*/
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout());
buttonPanel.add(okbtn);
buttonPanel.add(cancelbtn);
c.add(buttonPanel, "South");
// 设置窗体可见
jFrame.setVisible(true);
// 确认按下去获取
okbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
String mc1 = mc.getText();
String dj1 = dj.getText();
String sl1 = sl.getText();
if (" ".equals(mc1) || " ".equals(dj1) || "".equals(sl1)) {
JOptionPane.showMessageDialog(null, "请求参数不能为空");
return;
}
int sl2 = Integer.parseInt(sl1);
double dj2 = Double.parseDouble(dj1);
Goods g = new Goods(StrUtils.id(), StrUtils.uuid(), mc1, dj2, sl2);
boolean flag = GoodsDao.add(g);
if (flag) {
JOptionPane.showMessageDialog(null, "添加成功");
jFrame.setVisible(false);
} else {
JOptionPane.showMessageDialog(null, "添加失败");
}
} catch (HeadlessException e1) {
}
}
});
// 取消按下去清空
cancelbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
mc.setText("");
dj.setText("");
sl.setText("");
}
});
}
}
package com.sjsq.frame;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import com.sjsq.dao.GoodsDao;
import com.sjsq.model.Goods;
/**
* 图书修改框架 2019年6月6日18:04:53
*
* @author Administrator
*
*/
public class UpdateFrame extends Frame {
private static final long serialVersionUID = 1L;
public UpdateFrame(Goods g) {
JFrame jFrame = new JFrame("修改");
Container c = jFrame.getContentPane();
JLabel a1 = new JLabel("商品编号");
JTextField bh = new JTextField(g.getBh());
JLabel a2 = new JLabel("商品名称");
JTextField mc = new JTextField(g.getName());
JLabel a3 = new JLabel("商品单价");
JTextField dj = new JTextField(g.getPrice() + "");
JLabel a4 = new JLabel("商品数量");
JTextField sl = new JTextField(g.getNumber() + "");
JButton okbtn = new JButton("修改");
JButton cancelbtn = new JButton("重置");
// 设置窗体的位置及大小
jFrame.setBounds(600, 200, 300, 320);
// 设置一层相当于桌布的东西
c.setLayout(new BorderLayout());// 布局管理器
// 设置按下右上角X号后关闭
jFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// 初始化--往窗体里放其他控件
jFrame.setLocationRelativeTo(null);// 窗
/*标题部分--North*/
JPanel titlePanel = new JPanel();
titlePanel.setLayout(new FlowLayout());
titlePanel.add(new JLabel("修改商品信息"));
c.add(titlePanel, "North");
/*输入部分--Center*/
JPanel fieldPanel = new JPanel();
fieldPanel.setLayout(null);
a1.setBounds(50, 20, 100, 20);
a2.setBounds(50, 60, 100, 20);
a3.setBounds(50, 100, 100, 20);
a4.setBounds(50, 140, 100, 20);
fieldPanel.add(a1);
fieldPanel.add(a2);
fieldPanel.add(a3);
fieldPanel.add(a4);
bh.setBounds(110, 20, 120, 20);
mc.setBounds(110, 60, 120, 20);
dj.setBounds(110, 100, 120, 20);
sl.setBounds(110, 140, 120, 20);
fieldPanel.add(bh);
fieldPanel.add(mc);
fieldPanel.add(dj);
fieldPanel.add(sl);
c.add(fieldPanel, "Center");
/*按钮部分--South*/
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout());
buttonPanel.add(okbtn);
buttonPanel.add(cancelbtn);
c.add(buttonPanel, "South");
// 设置窗体可见
jFrame.setVisible(true);
// 确认按下去获取
okbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
String bh1 = bh.getText();
String mc1 = mc.getText();
String dj1 = dj.getText();
String sl1 = sl.getText();
String id = g.getId();
Goods g = new Goods(id, bh1, mc1, Double.parseDouble(dj1), Integer.valueOf(sl1));
boolean flag = GoodsDao.update(g);
if (flag) {
JOptionPane.showMessageDialog(null, "修改成功");
jFrame.setVisible(false);
} else {
JOptionPane.showMessageDialog(null, "修改失败");
}
} catch (HeadlessException e1) {
}
}
});
// 取消按下去清空
cancelbtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
bh.setText("");
mc.setText("");
dj.setText("");
sl.setText("");
}
});
}
}
package com.sjsq.frame;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import com.sjsq.dao.GoodsDao;
/**
* 统计
*
* @author Administrator
*
*/
public class StatisticalFrame {
private static final long serialVersionUID = 1L;
public StatisticalFrame() {
JFrame jFrame = new JFrame("商品统计信息");
Container c = jFrame.getContentPane();
JLabel a2 = new JLabel("商品资金总额:");
JLabel mc = new JLabel(GoodsDao.tongji().get("totalMoney") + "元");
JLabel a3 = new JLabel("库存最多的商品:");
JLabel dj = new JLabel(GoodsDao.tongji().get("maxGoodsName") + ",库存过多,请时促销处理~");
JLabel a4 = new JLabel("库存不足的商品:");
String kc = (String) GoodsDao.tongji().get("minGoodsName");
String tip = "";
if (kc == null || "".equals(kc)) {
tip = "库存很健康,继续保持哟~";
} else {
tip = "名称:" + kc + ",库存不足,记得进货哟~";
}
JLabel sl = new JLabel(tip);
// 设置窗体的位置及大小
jFrame.setBounds(600, 200, 480, 250);
// 设置一层相当于桌布的东西
c.setLayout(new BorderLayout());// 布局管理器
// 设置按下右上角X号后关闭
jFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// 初始化--往窗体里放其他控件
jFrame.setLocationRelativeTo(null);// 窗
/*标题部分--North*/
JPanel titlePanel = new JPanel();
titlePanel.setLayout(new FlowLayout());
titlePanel.add(new JLabel("商品统计"));
c.add(titlePanel, "North");
/*输入部分--Center*/
JPanel fieldPanel = new JPanel();
fieldPanel.setLayout(null);
a2.setBounds(50, 20, 160, 20);
a3.setBounds(50, 60, 160, 20);
a4.setBounds(50, 100, 160, 20);
fieldPanel.add(a2);
fieldPanel.add(a3);
fieldPanel.add(a4);
mc.setBounds(180, 20, 300, 20);
dj.setBounds(180, 60, 300, 20);
sl.setBounds(180, 100, 300, 20);
fieldPanel.add(mc);
fieldPanel.add(dj);
fieldPanel.add(sl);
c.add(fieldPanel, "Center");
/*按钮部分--South*/
JPanel buttonPanel = new JPanel();
c.add(buttonPanel, "South");
// 设置窗体可见
jFrame.setVisible(true);
}
}
package com.sjsq.model;
public class User {
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((password == null) ? 0 : password.hashCode());
result = prime * result + ((username == null) ? 0 : username.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
User other = (User) obj;
if (password == null) {
if (other.password != null)
return false;
} else if (!password.equals(other.password))
return false;
if (username == null) {
if (other.username != null)
return false;
} else if (!username.equals(other.username))
return false;
return true;
}
@Override
public String toString() {
return "User [username=" + username + ", password=" + password + "]";
}
private String username;
private String password;
public User(String username, String password) {
super();
this.username = username;
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public User() {
super();
// TODO Auto-generated constructor stub
}
}
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