package Calculation;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class MainMenu extends JFrame {
private static final long serialVersionUID = 1L; //定义程序序列化,1L是默认定义
protected static String s1;
protected static String s2;
protected static String s3;
private JLabel jl1 = new JLabel("欢迎使用");
private JLabel jl3 = new JLabel(" ");
private JLabel jl4 = new JLabel(" ");
private JButton JB1 = new JButton("开始答题");
private JButton JE = new JButton("退出登录");
private JPanel jp1 = new JPanel();
private JPanel jp2 = new JPanel();
private JPanel jp3 = new JPanel();
private JPanel jp4 = new JPanel();
private JPanel jp5 = new JPanel();
private JPanel jp6 = new JPanel();
private JPanel jp7 = new JPanel();
private void Event() {
JB1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
setVisible(false);
dispose();
new Test();
}
});
JE.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
setVisible(false);
dispose();
}
});
}
public MainMenu() {
jl1.setFont(new Font("黑体", Font.BOLD, 35));
jl1.setForeground(Color.gray);
jl1.setHorizontalAlignment(JLabel.CENTER); // 水平居中对齐
jl1.setVerticalAlignment(JLabel.CENTER);
JB1.setFont(new Font("宋体", Font.PLAIN, 25));
JE.setFont(new Font("宋体", Font.PLAIN, 25));
jp1.add(jl1);
// ...
jp7.setLayout(new GridLayout(2, 1, 20, 20)); // 两行一列，设置组件之间的水平和垂直间距
jp7.setBorder(BorderFactory.createEmptyBorder(20, 0, 20, 0)); // 设置上下留白
this.setTitle("欢迎使用口算答题系统");
this.setSize(500, 450);
this.setLocationRelativeTo(null); //将此窗口置于屏幕的中央
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLayout(new BorderLayout(20,20));
jp1.setLayout(new GridBagLayout());
this.add(jp1,BorderLayout.NORTH);
jp7.add(JB1);
jp7.add(JE);
this.add(jp7,BorderLayout.SOUTH);
//美化界面
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
Event();
this.setVisible(true);
}
public static void main(String[] args) {
new MainMenu();
}
}
package Calculation;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class Test extends JFrame {
private static final long serialVersionUID = 1L; //定义程序序列化,1L是默认定义
private int max = 50;
private int a = 0;
private int b = 0;
private int c = 0;
private int count = 1;
private JLabel JLgross = new JLabel("共5页");
private JLabel JLpage = new JLabel(); //页码控制
private JLabel jl1 = new JLabel(" "); //插两个空格进去
private JLabel JLhour = new JLabel();
private JLabel JLminute = new JLabel();
private JLabel JLseconds = new JLabel();
private JButton JB1 = new JButton("提交");
private JButton b1 = new JButton("首页");
private JButton b2 = new JButton("上一页");
private JButton b3 = new JButton("下一页");
private JButton b4 = new JButton("尾页");
private JButton b5 = new JButton("返回");
private JLabel jl[] = new JLabel[50]; //50个题目标签
private JTextField jtf[] = new JTextField[50];//50个文本框，存储答案
private JTextField jta[] = new JTextField[50];//50个文本框，存储结果
//private JPanel pnl1 = new JPanel();
private JPanel pnl2 = new JPanel();
private JPanel pnl3 = new JPanel();
private JPanel pnl4 = new JPanel();
static CardLayout care = new CardLayout();
int[] answer = new int[max];
String[] studentAnswer = new String[max];
String[] Test = new String[50];
int testNum = 0;
private void Event() {
//提交试卷按钮
JB1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int correctAnswer = 0;
for (int i = 0, k = 0; i < max; i++, k++) {
studentAnswer[i] = jtf[k].getText().trim();
try {
if (Integer.parseInt(studentAnswer[i]) == answer[k]) {
//将string字符串类型转换为integer整数类型
correctAnswer++;
}
} catch (NumberFormatException u) {
}
}
int score = 100 * (int) correctAnswer / max;
String s = "共50道题\n";
s = s + "答对" + correctAnswer + "道题\n";
s = s + "答错" + (max - correctAnswer) + "道题\n";
s = s + "成绩" + String.format("%d", score) + "分\n";
s = s + "正确率：" + correctAnswer * 100 / 50 + "%\n";
// Object[] options ={ "确定", "取消" }; //自定义按钮上的文字
JOptionPane.showMessageDialog(null, s, "本次答题情况", JOptionPane.ERROR_MESSAGE);
JOptionPane.showMessageDialog(null, "即将返回首页面", "提示", JOptionPane.ERROR_MESSAGE);
// JOptionPane.showOptionDialog(null, "即将返回首页面", "提示",JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]);
// 数据库连接信息
String url = "jdbc:mysql://localhost:3306/demo1?serverTimezone=UTC";
String username = "root";
String password = "123456";
Connection connection = null;
PreparedStatement statement = null;
try {
// 注册数据库驱动
Class.forName("com.mysql.cj.jdbc.Driver");
// 建立数据库连接
connection = DriverManager.getConnection(url, username, password);
// 创建预编译的SQL语句
String sql = "INSERT INTO test (test, answer) VALUES (?, ?)";
statement = connection.prepareStatement(sql);
// 遍历数据，并执行插入操作
for (int i = 0; i < Test.length; i++) {
statement.setString(1, Test[i]);
statement.setString(2, String.valueOf(answer[i]));
statement.executeUpdate();
}
} catch (Exception exception) {
exception.printStackTrace();
} finally {
// 关闭资源
try {
if (statement != null) {
statement.close();
}
if (connection != null) {
connection.close();
}
} catch (SQLException exception) {
exception.printStackTrace();
}
}
new MainMenu();
setVisible(false);
dispose();
}
});
//首页
b1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
care.first(pnl3);
count = 1;
JLpage.setText("第" + count + "页");
}
});
//前一页
b2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
care.previous(pnl3);
if (count > 1 && count <= 5) {
count--;
} else {
count = 5;
}
JLpage.setText("第" + count + "页");
}
});
//下一页
b3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
care.next(pnl3);
if (count >= 1 && count < 5) {
count++;
} else {
count = 1;
}
JLpage.setText("第" + count + "页");
}
});
//尾页
b4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
care.last(pnl3);
count = 5;
JLpage.setText("第" + count + "页");
}
});
b5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, "是否返回首页", "提示", JOptionPane.ERROR_MESSAGE);
new MainMenu();
setVisible(false);
dispose();
}
});
}
public Test() {
this.setTitle("开始答题");
this.setSize(600, 500);
this.setLocationRelativeTo(null); //将此窗口置于屏幕的中央
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLayout(new BorderLayout(20, 20)); //设置 各组件间水平垂直间隔为20像素
JLpage.setText("第" + count + "页");
pnl2.setLayout(new FlowLayout());
pnl2.add(JLgross);
pnl2.add(JLpage);//页数
pnl2.add(jl1);
//pnl2.add(pnl1);
pnl2.add(JB1);
this.add(pnl2, BorderLayout.NORTH);
pnl3.setLayout(care);
this.add(pnl3, BorderLayout.CENTER);
pnl3.setBorder(BorderFactory.createLoweredBevelBorder()); //边框
for (int i = 0, k = 0; i < 5; i++) { // 总页数改为5页
JPanel p = new JPanel();
p.setLayout(new GridLayout(5, 2, 20, 20)); //网格布局5行2列，水平垂直间距都设为20像素
for (int j = 0; j < 10; j++) { // 每页输出10道题目
a = (int) (Math.random() * 100 + 1);
b = (int) (Math.random() * 100 + 1);
String random = "";
String[] doc = {"+", "-"};
int index = (int) (Math.random() * doc.length);
random = doc[index];
if (random == "-") {
if (a > b) {
jl[k] = new JLabel(a + random + b + "=");
jl[k].setFont(new Font("黑体", Font.BOLD, 20));
p.add(jl[k]);
answer[k] = a - b;
Test[testNum] = a + "-" + b;
testNum++;
} else {
jl[k] = new JLabel(b + random + a + "=");
jl[k].setFont(new Font("黑体", Font.BOLD, 20));
p.add(jl[k]);
answer[k] = b - a;
Test[testNum] = b + "-" + a;
testNum++;
}
} else if (random == "+") {
jl[k] = new JLabel(a + random + b + "=");
jl[k].setFont(new Font("黑体", Font.BOLD, 20));
p.add(jl[k]);
answer[k] = a + b;
Test[testNum] = a + "+" + b;
testNum++;
}
jtf[k] = new JTextField(6);
p.add(jtf[k]);
jtf[k].setText(null);
k++;
}
pnl3.add(p);
}
pnl4.setLayout(new GridLayout(1, 4));
pnl4.add(b1);
pnl4.add(b2);
pnl4.add(b3);
pnl4.add(b4);
pnl4.add(b5);
this.add(pnl4, BorderLayout.SOUTH);
//美化界面
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
Event();
setVisible(true);
}
}
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