.gitignore

@@ -0,0 +1,30 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+.idea/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

Y0.0.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/AccountService.java

@@ -0,0 +1,5 @@
+import java.util.Map;
+public interface AccountService {
+    void setAccounts(String type);
+    Map<String, String> getAccounts();
+}

src/AccountServiceImpl.java

@@ -0,0 +1,36 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class AccountServiceImpl implements AccountService {
+    private Map<String, String> accounts = new HashMap<>();
+
+    @Override
+    public void setAccounts(String type) {
+
+        switch (type) {
+            case "小学":
+                accounts.put("张三1", "123");
+                accounts.put("张三2", "123");
+                accounts.put("张三3", "123");
+                break;
+            case "初中":
+                accounts.put("李四1", "123");
+                accounts.put("李四2", "123");
+                accounts.put("李四3", "123");
+                break;
+            case "高中":
+                accounts.put("王五1", "123");
+                accounts.put("王五2", "123");
+                accounts.put("王五3", "123");
+                break;
+            default:
+                System.out.println("未知账户类型！");
+                break;
+        }
+    }
+
+    @Override
+    public Map<String, String> getAccounts() {
+        return accounts;  // 返回账户数据
+    }
+}

src/LoginService.java

@@ -0,0 +1,3 @@
+public interface LoginService {
+    boolean authenticate(String username, String password);
+}

src/LoginServiceImpl.java

@@ -0,0 +1,27 @@
+import java.util.Map;
+
+public class LoginServiceImpl implements LoginService {
+    private AccountService accountService;
+
+    public LoginServiceImpl(AccountService accountService) {
+        this.accountService = accountService;
+    }
+
+    @Override
+    public boolean authenticate(String username, String password) {
+
+        username = username.trim();
+        password = password.trim();
+
+
+        Map<String, String> accounts = accountService.getAccounts();
+
+
+        if (accounts.containsKey(username)) {
+            String storedPassword = accounts.get(username);
+            return storedPassword.equals(password);  // 密码匹配
+        } else {
+            return false;
+        }
+    }
+}

src/MathApp.java

@@ -0,0 +1,88 @@
+import java.util.Scanner;
+
+public class MathApp {
+    private static LoginService loginService;
+    private static Scanner scanner = new Scanner(System.in);
+    private static String currentType = "小学";  // 默认账户类型是 "小学"
+
+    public static void main(String[] args) {
+
+        AccountService accountService = new AccountServiceImpl();
+        accountService.setAccounts(currentType);
+
+        loginService = new LoginServiceImpl(accountService);
+
+
+        while (true) {
+            login();
+        }
+    }
+
+
+    public static void login() {
+
+        System.out.print("请输入用户名和密码（空格隔开）：");
+        String input = scanner.nextLine();
+
+
+        String[] credentials = input.split(" ");
+
+        if (credentials.length != 2) {
+            System.out.println("格式错误，请重新输入！");
+            return;
+        }
+
+        String username = credentials[0].trim();
+        String password = credentials[1].trim();
+
+        if (loginService.authenticate(username, password)) {
+            System.out.println("登录成功！");
+
+
+            System.out.println("当前选择为 " + currentType + " 出题");
+
+
+            generateQuestions();
+        } else {
+            System.out.println("用户名或密码错误，请重新输入！");
+        }
+    }
+
+    public static void generateQuestions() {
+        System.out.print("请输入生成题目数量（输入-1退出登录）：");
+        int numQuestions = scanner.nextInt();
+        scanner.nextLine();
+
+        if (numQuestions == -1) {
+            System.out.println("退出登录！");
+            return;
+        }
+
+        if (numQuestions < 10 || numQuestions > 30) {
+            System.out.println("请输入有效的题目数量（10-30）！");
+            return;
+        }
+
+        System.out.println("生成 " + numQuestions + " 道题目...");
+
+
+    }
+
+
+    public static void switchAccountType() {
+        System.out.print("请输入要切换的账户类型（小学、初中或高中）：");
+        String type = scanner.nextLine().trim();
+
+        if (type.equals("小学") || type.equals("初中") || type.equals("高中")) {
+            currentType = type;
+            AccountService accountService = new AccountServiceImpl();
+            accountService.setAccounts(currentType);
+
+            loginService = new LoginServiceImpl(accountService);
+
+            System.out.println("系统提示：准备生成 " + currentType + " 数学题目，请输入生成题目数量");
+        } else {
+            System.out.println("请输入小学、初中和高中三个选项中的一个");
+        }
+    }
+}

src/UserService.java

@@ -0,0 +1,5 @@
+public interface UserService {
+    boolean switchAccount(String type);
+    String getAccountType();
+}
+

src/UserServiceImpl.java

@@ -0,0 +1,25 @@
+public class UserServiceImpl implements UserService {
+    private AccountService accountService;
+    private String accountType = "";
+
+    public UserServiceImpl(AccountService accountService) {
+        this.accountService = accountService;
+    }
+
+    @Override
+    public boolean switchAccount(String type) {
+        if ("小学".equals(type) || "初中".equals(type) || "高中".equals(type)) {
+            accountType = type;
+            accountService.setAccounts(accountType);
+            return true;
+        } else {
+            System.out.println("请选择正确的账户类型！");
+            return false;
+        }
+    }
+
+    @Override
+    public String getAccountType() {
+        return accountType;
+    }
+}