Merge pull request 'lx' (#2) from lx into master

Reviewed-on: #2

src/main/java/com/example/Home.java

@@ -12,7 +12,7 @@ public class Home extends JFrame implements ActionListener {
     JMenuItem StockMenuItem,InventoryMenuItem,SalesMenuItem;
 
     Home() {
-        super("城市进销存信息管理系统");
+        super("超市进销存信息管理系统");
         menuBar = new JMenuBar();
         menu = new JMenu("菜单");
         StockMenuItem = new JMenuItem("库存信息管理");

src/main/java/com/example/Main.java

@@ -49,7 +49,7 @@ public class Main extends JFrame implements ActionListener {
             String sql = "select * from user where username='"+tf1.getText()+"' and password='"+tf2.getText()+"'"; ;
             try {
                 ResultSet rs = jdbc.query(sql);
-                jdbc.close();
+
                 if(rs.next()&&tf3.getText().equals(jl5.getText())) {
                     JOptionPane.showMessageDialog(null, "登录成功");
                     new Home();
@@ -70,4 +70,5 @@ public class Main extends JFrame implements ActionListener {
     public static void main(String[] args) {
         new  Main();
     }
+
 }

src/main/java/com/example/SalesProductManagement.java

@@ -1,4 +1,105 @@
 package com.example;
 
-public class SalesProductManagement {
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class SalesProductManagement extends JFrame implements ActionListener {
+
+    JButton btn1;
+    JLabel lab1,lab2,lab3,lab4,lab5,lab6,lab7;
+    JTextField text2,text3,text5,text6,text8,text9,text10;
+    //    JPasswordField passwordfile;
+    JPanel panel1,panel2,panel3;
+
+
+
+    SalesProductManagement(){
+        super("销售信息管理");
+        panel1 = new JPanel();
+        panel2 = new JPanel();
+        panel3 = new JPanel();
+        lab1=new JLabel("名称",JLabel.CENTER);
+        lab2=new JLabel("单价",JLabel.CENTER);
+        lab3=new JLabel("数量",JLabel.CENTER);
+        lab4=new JLabel("总计：",JLabel.CENTER);
+        lab5=new JLabel("苹果",JLabel.CENTER);
+        lab6=new JLabel("香蕉",JLabel.CENTER);
+        lab7=new JLabel("橘子",JLabel.CENTER);
+
+        text2=new JTextField("2"+"元",JTextField.CENTER);
+        text3=new JTextField(3);
+        text5=new JTextField("3"+"元",JTextField.CENTER);
+        text6=new JTextField(3);
+        text8=new JTextField("5"+"元",JTextField.CENTER);
+        text9=new JTextField(3);
+        text10=new JTextField(5);
+
+        btn1=new JButton("结算");
+        btn1.addActionListener(this);
+
+
+        add(panel1);
+        panel1.setLayout(new GridLayout(1,3,5,5));
+        panel1.add(lab1);
+        panel1.add(lab2);
+        panel1.add(lab3);
+        panel1.setMaximumSize(new Dimension(Integer.MAX_VALUE, 40));
+        add(panel2);
+        panel2.setLayout(new GridLayout(3,3,5,5));
+        panel2.add(lab5);
+        panel2.add(text2);
+        panel2.add(text3);
+        panel2.add(lab6);
+        panel2.add(text5);
+        panel2.add(text6);
+        panel2.add(lab7);
+        panel2.add(text8);
+        panel2.add(text9);
+        panel2.setMaximumSize(new Dimension(Integer.MAX_VALUE, 120));
+        add(panel3);
+        panel3.setLayout(new GridLayout(1,3,5,5));
+        panel3.add(btn1);
+        panel3.add(lab4);
+        panel3.add(text10);
+        panel3.setMaximumSize(new Dimension(Integer.MAX_VALUE, 40));
+
+
+
+        setLayout(new GridLayout(3,1));
+        setSize(500,500);
+        setLocationRelativeTo(null);
+        setVisible(true);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 添加窗口关闭功能
+    }
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        // 判断事件源是否为结算按钮
+        if (e.getSource() == btn1) {
+            try {
+                // 获取单价（从文本框提取数字部分）
+                double applePrice = Double.parseDouble(text2.getText().replace("元", ""));
+                double bananaPrice = Double.parseDouble(text5.getText().replace("元", ""));
+                double orangePrice = Double.parseDouble(text8.getText().replace("元", ""));
+
+                // 获取数量（处理空输入情况）
+                int appleCount = text3.getText().trim().isEmpty() ? 0 : Integer.parseInt(text3.getText().trim());
+                int bananaCount = text6.getText().trim().isEmpty() ? 0 : Integer.parseInt(text6.getText().trim());
+                int orangeCount = text9.getText().trim().isEmpty() ? 0 : Integer.parseInt(text9.getText().trim());
+
+                // 计算总金额
+                double total = (applePrice * appleCount) + (bananaPrice * bananaCount) + (orangePrice * orangeCount);
+
+                // 显示结果，保留两位小数
+                text10.setText(String.format("%.2f元", total));
+            } catch (NumberFormatException ex) {
+                // 处理输入非数字的情况
+                JOptionPane.showMessageDialog(this, "请输入有效的数字", "输入错误", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+    public static void main(String[] args) {
+        new  SalesProductManagement();
+    }
 }