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一次测试

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lx
2025-09-23 17:38:56 +08:00
parent 43024e6b3e
commit 5339a4c0ee
1 changed files with 110 additions and 87 deletions
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src/main/java/com/example/SalesProductManagement.java
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package com.example;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.ResultSet;
import java.sql.SQLException;
public class SalesProductManagement extends JFrame implements ActionListener {
private JTable table;
private DefaultTableModel tableModel;
private JTextField idField, nameField, phoneField, addressField;
private JButton addBtn;
JButton btn1;
JLabel lab1,lab2,lab3,lab4,lab5,lab6,lab7;
JTextField text2,text3,text5,text6,text8,text9,text10;
// JPasswordField passwordfile;
JPanel panel1,panel2,panel3;
public SalesProductManagement() {
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);
setTitle("商品信息管理");
setSize(800, 600);
setLocationRelativeTo(null);
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
// 创建主面板
JPanel mainPanel = new JPanel(new BorderLayout());
// 创建表格面板
JPanel tablePanel = new JPanel(new BorderLayout());
tablePanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
// 创建表格模型
String[] columnNames = {"名称", "单价", "购买数量"};
tableModel = new DefaultTableModel(columnNames, 0);
table = new JTable(tableModel);
table.setFont(new Font("微软雅黑", Font.PLAIN, 14));
table.getTableHeader().setFont(new Font("微软雅黑", Font.BOLD, 14));
table.setRowHeight(25);
// 添加滚动面板
JScrollPane scrollPane = new JScrollPane(table);
tablePanel.add(scrollPane, BorderLayout.CENTER);
// 创建输入面板
JPanel inputPanel = new JPanel(new GridLayout(1, 2, 10, 10));
inputPanel.setBorder(BorderFactory.createTitledBorder("结算信息"));
inputPanel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
addBtn = new JButton("结算");
addBtn.addActionListener(this);
inputPanel.add(addBtn);
inputPanel.add(new JLabel("共计:"));
addressField = new JTextField();
inputPanel.add(addressField);
// 组装面板
mainPanel.add(tablePanel, BorderLayout.CENTER);
mainPanel.add(inputPanel, BorderLayout.SOUTH);
add(mainPanel);
loadData();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
@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);
}
}
}
//主类，调试
public static void main(String[] args) {
new SalesProductManagement();
}
private void loadData() {
Jdbc jdbc = new Jdbc();
try {
ResultSet rs = jdbc.query("SELECT name,selling_price,quantity_sold FROM commodity");
// 清空旧数据
tableModel.setRowCount(0);
// 填充新数据
while (rs.next()) {
Object[] row = {
rs.getString("name"),
rs.getDouble("selling_price"),
rs.getInt("quantity_sold"),
};
tableModel.addRow(row);
}
rs.close();
jdbc.close();
} catch (SQLException e) {
e.printStackTrace();
JOptionPane.showMessageDialog(this, "加载数据失败: " + e.getMessage());
}
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == addBtn) {
double total = 0.0; // 总金额
// 获取表格的行数
int rowCount = tableModel.getRowCount();
// 遍历每一行数据
for(int i = 0; i < rowCount; i++) {
// 获取单价（第1列，索引从0开始）
double price = (double) tableModel.getValueAt(i, 1);
// 获取数量（第2列）
int quantity = (int) tableModel.getValueAt(i, 2);
// 计算该行的金额并累加到总金额
total += price * quantity;
}
// 在文本框中显示总金额
addressField.setText(String.format("%.2f", total) + " 元");
}
}
}