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@ -0,0 +1,469 @@
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package com.mathpaper;
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import com.mathpaper.model.User;
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import com.mathpaper.generator.QuestionGenerator;
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import com.mathpaper.generator.PrimaryGenerator;
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import com.mathpaper.generator.JuniorGenerator;
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import com.mathpaper.generator.SeniorGenerator;
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import com.mathpaper.util.FileUtil;
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import com.mathpaper.util.DuplicateChecker;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Scanner;
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/**
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* 数学试卷生成程序主类
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* 负责用户登录、交互和试卷生成的主要流程
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*
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* @author 系统
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* @version 2.0
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*/
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public class Main {
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// 常量定义
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private static final int MIN_QUESTIONS = 1;
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private static final int MAX_QUESTIONS = 100;
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private static final int PREVIEW_COUNT = 5;
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private static final int MAX_ATTEMPTS_MULTIPLIER = 10;
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private static final String GRADE_SWITCH_PREFIX = "切换为";
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private static final String EXIT_COMMAND = "-1";
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// 当前年级（全局变量）
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private static String currentGrade = "小学";
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// 界面美化常量
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private static final String SEPARATOR = "=" + "=".repeat(50);
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private static final String MENU_SEPARATOR = "=" + "=".repeat(50);
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private static final int PROGRESS_BAR_LENGTH = 30;
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// 预设用户账号
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private static final Map<String, User> USERS = new HashMap<>();
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static {
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initializeUsers();
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}
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/**
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* 初始化用户账号
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*/
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private static void initializeUsers() {
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// 小学用户（中文和英文用户名）
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addUser("张三1", "123", "小学");
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addUser("张三2", "123", "小学");
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addUser("张三3", "123", "小学");
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addUser("zhangsan1", "123", "小学");
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addUser("zhangsan2", "123", "小学");
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addUser("zhangsan3", "123", "小学");
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addUser("primary1", "123", "小学");
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addUser("primary2", "123", "小学");
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// 初中用户（中文和英文用户名）
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addUser("李四1", "123", "初中");
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addUser("李四2", "123", "初中");
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addUser("李四3", "123", "初中");
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addUser("lisi1", "123", "初中");
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addUser("lisi2", "123", "初中");
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addUser("lisi3", "123", "初中");
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addUser("junior1", "123", "初中");
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addUser("junior2", "123", "初中");
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// 高中用户（中文和英文用户名）
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addUser("王五1", "123", "高中");
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addUser("王五2", "123", "高中");
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addUser("王五3", "123", "高中");
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addUser("wangwu1", "123", "高中");
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addUser("wangwu2", "123", "高中");
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addUser("wangwu3", "123", "高中");
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addUser("senior1", "123", "高中");
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addUser("senior2", "123", "高中");
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// 测试账号
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addUser("test123", "123", "小学");
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addUser("测试", "123", "小学");
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}
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/**
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* 添加用户到系统
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*/
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private static void addUser(String username, String password, String grade) {
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// 由于User类已简化，这里只存储用户名
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try {
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USERS.put(username, new User(username));
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} catch (IllegalArgumentException e) {
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System.err.println("添加用户失败: " + username + " - " + e.getMessage());
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}
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}
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/**
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* 程序主入口
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*/
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public static void main(String[] args) {
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Scanner scanner = new Scanner(System.in);
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try {
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// 定期清理过期缓存
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DuplicateChecker.cleanupExpiredCache();
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// 用户登录
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User user = performLogin(scanner);
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if (user == null) {
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System.out.println("登录失败，程序退出");
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return;
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}
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// 主交互循环
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runMainLoop(scanner, user);
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} catch (Exception e) {
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System.err.println("程序运行出现异常: " + e.getMessage());
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} finally {
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scanner.close();
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}
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}
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/**
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* 用户登录
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*/
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private static User performLogin(Scanner scanner) {
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System.out.println("=== 用户登录 ===");
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System.out.println("请输入用户名和密码进行登录");
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System.out.println();
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while (true) {
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System.out.print("用户名: ");
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String username = scanner.nextLine().trim();
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// 验证用户名格式
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String validationError = User.getValidationError(username);
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if (validationError != null) {
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System.out.println("❌ " + validationError);
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System.out.println("请重新输入：");
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continue;
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}
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// 检查用户是否存在
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if (!USERS.containsKey(username)) {
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System.out.println("❌ 用户名不存在，请检查输入或使用以下用户名：");
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System.out.println("中文用户：张三1, 张三2, 张三3, 李四1, 李四2, 李四3, 王五1, 王五2, 王五3, 测试");
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System.out.println("英文用户：zhangsan1, zhangsan2, zhangsan3, lisi1, lisi2, lisi3, wangwu1, wangwu2, wangwu3, test123");
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System.out.println("请重新输入：");
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continue;
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}
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System.out.print("密码: ");
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String password = scanner.nextLine().trim();
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// 验证密码（所有用户密码都是123）
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if (!"123".equals(password)) {
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System.out.println("❌ 密码错误！所有用户的密码都是 123");
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System.out.println("请重新输入：");
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continue;
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}
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try {
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User user = new User(username);
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System.out.println("✅ 登录成功！欢迎，" + username + "！");
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System.out.println();
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return user;
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} catch (IllegalArgumentException e) {
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System.out.println("❌ " + e.getMessage());
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System.out.println("请重新输入：");
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}
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}
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}
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/**
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* 验证登录信息（简化版本）
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*/
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private static User validateLogin(String input) {
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String[] parts = input.split("\\s+");
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if (parts.length != 2) {
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return null;
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}
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String username = parts[0].trim();
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String password = parts[1].trim();
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// 简单验证：检查用户是否存在
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User user = USERS.get(username);
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if (user != null) {
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return user;
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}
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return null;
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}
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/**
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* 运行主交互循环
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*/
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private static void runMainLoop(Scanner scanner, User user) {
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QuestionGenerator generator = getGenerator(currentGrade);
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while (true) {
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displayMainMenu(user);
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String choice = scanner.nextLine().trim();
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switch (choice) {
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case "1":
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handleGradeSwitch(scanner, user);
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generator = getGenerator(currentGrade);
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break;
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case "2":
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handleQuestionGeneration(scanner, user, generator);
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break;
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case "3":
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displayExitMessage();
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return;
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default:
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System.out.println("❌ 无效选择，请重新输入！");
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}
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}
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}
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/**
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* 显示欢迎界面
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*/
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private static void displayWelcomeScreen(User user) {
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System.out.println(SEPARATOR);
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System.out.println("🎓 数学题目生成系统");
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System.out.println("👤 用户：" + user.getUsername());
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System.out.println("📚 当前年级：" + currentGrade);
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System.out.println(SEPARATOR);
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}
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/**
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* 显示主菜单
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*/
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private static void displayMainMenu(User user) {
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System.out.println(MENU_SEPARATOR);
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System.out.println("📚 当前年级：" + currentGrade);
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System.out.println("👤 当前用户：" + user.getUsername());
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System.out.println();
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System.out.println("1. 切换年级");
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System.out.println("2. 生成试卷");
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System.out.println("3. 退出系统");
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System.out.println(MENU_SEPARATOR);
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System.out.print("\n🔹 请选择操作（当前：" + currentGrade + "）：");
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}
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/**
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* 显示分隔线
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*/
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private static void displaySeparator() {
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System.out.println("\n" + "-".repeat(30) + "\n");
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}
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/**
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* 显示退出消息
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*/
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private static void displayExitMessage() {
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System.out.println("\n" + SEPARATOR);
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System.out.println("👋 感谢使用数学题目生成系统！");
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System.out.println("🎉 祝您学习愉快，再见！");
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System.out.println(SEPARATOR);
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}
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/**
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* 根据年级获取对应的题目生成器
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*/
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private static QuestionGenerator getGenerator(String grade) {
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switch (grade) {
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case "小学":
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return new PrimaryGenerator();
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case "初中":
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return new JuniorGenerator();
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case "高中":
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return new SeniorGenerator();
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default:
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System.err.println("未知年级: " + grade + "，使用小学模式");
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return new PrimaryGenerator();
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}
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}
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/**
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* 验证年级是否有效
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*/
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private static boolean isValidGrade(String grade) {
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return "小学".equals(grade) || "初中".equals(grade) || "高中".equals(grade);
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}
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/**
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* 生成并保存试卷
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*/
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private static void generateAndSavePaper(QuestionGenerator generator, int count, User user) {
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try {
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List<String> questions = generateQuestionsWithProgress(generator, count, user.getUsername());
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if (questions.isEmpty()) {
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System.out.println("❌ 生成失败：无法生成题目，请稍后重试");
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return;
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}
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if (questions.size() < count) {
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System.out.println("⚠️ 注意：由于查重限制，实际生成了 " + questions.size() + " 道题目");
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}
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System.out.print("💾 正在保存试卷...");
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String path = FileUtil.getSavePath(user.getUsername());
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FileUtil.savePaper(path, questions);
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System.out.println(" 完成！");
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System.out.println("✅ 试卷已保存至：" + path);
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displayQuestionPreview(questions);
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} catch (Exception e) {
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System.err.println("❌ 生成试卷时出现错误: " + e.getMessage());
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}
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}
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/**
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* 带进度提示的题目生成
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*/
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private static List<String> generateQuestionsWithProgress(QuestionGenerator generator, int count, String username) {
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List<String> questions = new ArrayList<>();
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generator.clearCurrentQuestions();
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int attempts = 0;
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int maxAttempts = count * MAX_ATTEMPTS_MULTIPLIER;
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System.out.println("📊 生成进度：");
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while (questions.size() < count && attempts < maxAttempts) {
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try {
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String question = generator.generateUniqueQuestion();
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if (question != null && !question.trim().isEmpty()) {
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// 检查是否与历史题目重复
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if (!DuplicateChecker.isDuplicate(question, username)) {
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questions.add(question);
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// 显示进度
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displayProgress(questions.size(), count);
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}
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}
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} catch (Exception e) {
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System.err.println("⚠️ 生成题目时出现错误: " + e.getMessage());
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}
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attempts++;
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}
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if (questions.size() < count && attempts >= maxAttempts) {
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System.out.println("\n⚠️ 提示：已达到最大尝试次数，可能存在题目重复过多的情况");
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} else if (questions.size() == count) {
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System.out.println("\n🎉 题目生成完成！");
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}
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return questions;
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}
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/**
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* 显示生成进度
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*/
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private static void displayProgress(int current, int total) {
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int percentage = (int) ((double) current / total * 100);
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int progressLength = (int) ((double) current / total * PROGRESS_BAR_LENGTH);
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StringBuilder progressBar = new StringBuilder();
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progressBar.append("[");
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for (int i = 0; i < PROGRESS_BAR_LENGTH; i++) {
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if (i < progressLength) {
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progressBar.append("█");
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} else {
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progressBar.append("░");
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}
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}
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progressBar.append("]");
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System.out.print("\r" + progressBar.toString() + " " + current + "/" + total + " (" + percentage + "%)");
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if (current == total) {
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System.out.println(); // 换行
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}
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}
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/**
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* 显示题目预览
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*/
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private static void displayQuestionPreview(List<String> questions) {
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System.out.println("\n📝 题目预览");
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System.out.println("─".repeat(40));
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int displayCount = Math.min(PREVIEW_COUNT, questions.size());
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for (int i = 0; i < displayCount; i++) {
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System.out.println((i + 1) + ". " + questions.get(i));
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}
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if (questions.size() > PREVIEW_COUNT) {
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System.out.println(" ... 还有 " + (questions.size() - PREVIEW_COUNT) + " 道题目");
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}
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System.out.println("─".repeat(40));
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System.out.println("📊 总计：" + questions.size() + " 道题目");
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}
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/**
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* 处理年级切换
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*/
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private static void handleGradeSwitch(Scanner scanner, User user) {
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System.out.println("\n📚 请选择年级：");
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System.out.println("1. 小学");
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System.out.println("2. 初中");
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System.out.println("3. 高中");
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System.out.print("请输入选择（1-3）：");
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String choice = scanner.nextLine().trim();
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String newGrade = null;
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switch (choice) {
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case "1":
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newGrade = "小学";
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break;
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case "2":
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newGrade = "初中";
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break;
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case "3":
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newGrade = "高中";
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break;
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default:
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System.out.println("❌ 无效选择！");
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return;
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}
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if (!newGrade.equals(currentGrade)) {
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currentGrade = newGrade;
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System.out.println("✅ 已切换到" + currentGrade + "模式");
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} else {
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System.out.println("ℹ️ 当前已是" + currentGrade + "模式");
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}
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}
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/**
|
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* 处理题目生成
|
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*/
|
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private static void handleQuestionGeneration(Scanner scanner, User user, QuestionGenerator generator) {
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System.out.print("\n📝 请输入要生成的题目数量（1-50）：");
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String input = scanner.nextLine().trim();
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try {
|
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int count = Integer.parseInt(input);
|
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if (count < 1 || count > 50) {
|
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System.out.println("❌ 题目数量必须在1-50之间！");
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return;
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}
|
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System.out.println("\n🔄 开始生成" + count + "道" + currentGrade + "数学题目...");
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generateAndSavePaper(generator, count, user);
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} catch (NumberFormatException e) {
|
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|
|
System.out.println("❌ 请输入有效的数字！");
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}
|
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}
|
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}
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