doc/README.md

@@ -1,15 +1,12 @@
 中小学数学卷子自动生成程序
 -
----
 项目简介
 -
----
 本项目实现了一个为中小学教师自动生成试卷的程序。  
 程序通过命令行进行交互，根据登录的账号自动匹配对应难度的试题进行生成，同时支持用户切换，难度切换，试题查重，自动保存等功能。  
 
 项目结构
 -
----
 ```plaintext
 中小学数学卷子自动生成程序/
 ├── src/                       # 源代码目录
@@ -30,7 +27,6 @@
 ```
 功能特性
 -
----
 1. 用户登录  
 支持预设的 9 个账户（小学 3 个、初中 3 个、高中 3 个）  
 账户信息：  
@@ -57,7 +53,6 @@
 
 使用示例
 -
----
 
 
 ### 平台支持

questions/张三1/2025-09-28-20-51-10.txt

@@ -0,0 +1,29 @@
+1. (66 * 13) / 98
+
+2. (54 + 11) / 27 + 14 - 40
+
+3. (68 / 7) * 80 * 74 + 40
+
+4. (51 / 88) + 69 * 24
+
+5. (38 * 80) / 94 / 1 - 41
+
+6. (61 - 80) * 65
+
+7. (87 / 54) + 36
+
+8. (52 / 81) + 11 - 36
+
+9. 75 - 71
+
+10. (77 - 5) - 87 * 81
+
+11. 59 / (62 + 29 * 85) - 14
+
+12. (72 * 67) * 36
+
+13. (91 / 16) * 78
+
+14. 71 - 30
+
+15. (38 * 26) + 54 / 90

questions/张三1/2025-09-28-20-51-23.txt

@@ -0,0 +1,39 @@
+1. 26 + 45 - pow(43,2) / 10
+
+2. 68 * sqrt(20) + 7
+
+3. 5 - 81 + 61 * pow(64,2) - 36
+
+4. 6 + pow(41,2)
+
+5. 55 / sqrt(78) * 93 / 17
+
+6. pow(93,2) * 1 * 78
+
+7. 6 - pow(8,2) - 7
+
+8. sqrt(34) + 6
+
+9. 68 * pow(39,2)
+
+10. 19 - sqrt(66)
+
+11. 62 + 57 - pow(60,2) / 19 + 88
+
+12. 61 + 54 * sqrt(98) * 51 * 78
+
+13. pow(23,2) - 82 * 13
+
+14. pow(22,2) - 43
+
+15. 59 - sqrt(82)
+
+16. 22 / pow(19,2)
+
+17. sqrt(6) - 13
+
+18. 51 + 7 * sqrt(13) + 13 / 86
+
+19. 80 * 59 + 38 / sqrt(28) + 59
+
+20. 42 + 79 + 60 / pow(93,2) + 68

questions/张三1/2025-09-28-20-51-35.txt

@@ -0,0 +1,49 @@
+1. cos(50) - 5 - 15 * 48
+
+2. 85 + 27 + cos(81) + 54 * 22
+
+3. cos(65) + 99
+
+4. 90 - sin(23)
+
+5. 12 - 49 * cos(52)
+
+6. 53 * 56 / 29 + sin(59)
+
+7. tan(5) + 45
+
+8. 8 + 41 / 50 + cos(27) - 69
+
+9. 77 * 80 - sin(68) / 59
+
+10. sin(73) * 90 * 52
+
+11. cos(15) / 3 / 45 / 71 - 55
+
+12. 6 + 89 * sin(58)
+
+13. 2 + cos(86) / 13 * 28
+
+14. 92 + 68 + 10 - cos(88) + 37
+
+15. 31 + 68 * 4 - cos(32)
+
+16. 20 - 52 * 52 / sin(22)
+
+17. 47 + 61 / 2 * 23 - cos(21)
+
+18. sin(10) / 34
+
+19. 91 - cos(3) + 59 - 15 * 30
+
+20. 5 / 91 - cos(0) / 4 * 66
+
+21. 54 - 40 / sin(79)
+
+22. 6 + tan(58) - 16
+
+23. 6 / cos(32) / 22
+
+24. 9 / tan(33) * 24 + 69
+
+25. 37 - 23 + cos(1) + 60 - 96

questions/李四2/2025-09-28-20-52-07.txt

@@ -0,0 +1,19 @@
+1. 93 / 27 * 80 * pow(44,2) / 20
+
+2. 29 / pow(78,2) / 98 - 60 / 45
+
+3. 32 + 33 + 20 - 1 / pow(21,2)
+
+4. 20 / pow(20,2) * 10 - 33 * 2
+
+5. 59 / 22 * 91 - sqrt(14) + 39
+
+6. 56 * 64 / sqrt(76) / 64
+
+7. 75 - pow(33,2) - 54 - 7 - 36
+
+8. 62 + sqrt(6)
+
+9. pow(91,2) / 10 / 11 / 49 * 97
+
+10. 31 + 82 / 53 / sqrt(80)

questions/王五3/2025-09-28-20-52-15.txt

@@ -0,0 +1,59 @@
+1. 52 - sin(28)
+
+2. 41 + 33 - tan(80) + 24
+
+3. sin(72) - 89 - 70 - 7
+
+4. 81 - 94 - 73 + cos(77)
+
+5. tan(30) + 51 - 2
+
+6. 39 + sin(1) + 10 - 60
+
+7. 100 + cos(8) - 38 * 19 * 89
+
+8. sin(79) / 98
+
+9. cos(75) * 49 * 79
+
+10. 78 / 40 * 75 / tan(0)
+
+11. sin(43) - 13 * 69 * 83
+
+12. 48 - cos(51)
+
+13. 29 * 27 + tan(42) + 53
+
+14. 85 + tan(48) - 18
+
+15. 89 * tan(39)
+
+16. 42 - sin(22) + 39
+
+17. 74 * sin(4) - 10 * 47
+
+18. 65 - 96 - 29 / cos(89) * 41
+
+19. 46 * sin(2)
+
+20. 32 * 84 - 97 / 20 + tan(50)
+
+21. 28 * cos(59) / 63
+
+22. sin(16) * 58
+
+23. 53 * 55 - 63 + cos(66)
+
+24. sin(91) * 82 / 60 * 88 + 65
+
+25. 36 + 7 - 57 * 74 * sin(52)
+
+26. 5 / 58 - tan(49)
+
+27. 90 * tan(74)
+
+28. tan(3) * 36
+
+29. 49 / tan(82)
+
+30. 15 / 12 / 37 - 76 / tan(35)

src/META-INF/MANIFEST.MF

@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: Program.Main
+

src/Program/HighMaker.java

@@ -1,44 +1,42 @@
 package Program;
 
 public class HighMaker extends QuestionMaker {
-    private static final char[] operators = {'+', '-', '*', '/'};
-    private static final String[] functions = {"sin", "cos", "tan"};
+    private static final char[] OPERATORS = {'+', '-', '*', '/'};
+    private static final String[] FUNCTIONS = {"sin", "cos", "tan"};
 
     /**
      * 为式子添加三角函数
      * @return 添加三角函数后的式子
      */
-
     @Override
-
     protected String makeOneQuestion() {
         StringBuilder question = new StringBuilder();
-        boolean check=false;
+        boolean check = false;
 
-        int count=rand.nextInt(4)+2;
-        int trigFunction=rand.nextInt(count);
+        int count = rand.nextInt(4) + 2;
+        int trigFunction = rand.nextInt(count);
 
-        for(int i=0;i<count;i++){
-            if(i>0){
-                char operator=operators[rand.nextInt(operators.length)];
+        for (int i = 0; i < count; i++) {
+            if (i > 0) {
+                char operator = OPERATORS[rand.nextInt(OPERATORS.length)];
                 question.append(" ").append(operator).append(" ");
             }
 
-            if(i==trigFunction&&!check){
-                String function=functions[rand.nextInt(functions.length)];
-                int angle=rand.nextInt(100);
+            if (i == trigFunction && !check) {
+                String function = FUNCTIONS[rand.nextInt(FUNCTIONS.length)];
+                int angle = rand.nextInt(100);
                 question.append(function).append("(").append(angle).append(")");
-                check=true;
-            }else{
-                int random=randomMaker();
+                check = true;
+            } else {
+                int random = randomMaker();
                 question.append(random);
             }
         }
 
-        if(!check){
-            String function=functions[rand.nextInt(functions.length)];
-            char operator=operators[rand.nextInt(operators.length)];
-            int angle=rand.nextInt(100);
+        if (!check) {
+            String function = FUNCTIONS[rand.nextInt(FUNCTIONS.length)];
+            char operator = OPERATORS[rand.nextInt(OPERATORS.length)];
+            int angle = rand.nextInt(100);
             question.append(" ").append(operator).append(" ").append(function)
                     .append("(").append(angle).append(")");
         }
@@ -46,10 +44,8 @@ public class HighMaker extends QuestionMaker {
     }
 
     @Override
-
     protected boolean checkQuestion(String question) {
-        // 检查是否包含三角函数
         return question.contains("sin(") || question.contains("cos(")
                 || question.contains("tan(");
     }
-}
+}

src/Program/Main.java

@@ -2,10 +2,6 @@ package Program;
 
 import java.util.Scanner;
 
-/**
- * 主程序
- */
-
 public class Main {
     private final Scanner scanner;
     private final Users users;
@@ -13,6 +9,12 @@ public class Main {
     private String currentUser;
     private Type currentType;
 
+    public Main() {
+        this.scanner = new Scanner(System.in);
+        this.users = new Users();
+        this.questionManager = new QuestionManager();
+    }
+
     private String getGrade(Type type) {
         switch (type) {
             case primary:
@@ -26,25 +28,16 @@ public class Main {
         }
     }
 
-    public Main() {
-        this.scanner = new Scanner(System.in);
-        this.users = new Users();
-        this.questionManager = new QuestionManager();
-    }
-
-    /**
-     * 清屏函数
-     */
-
+    /**清屏函数*/
     private void clearScreen() {
-        try{
+        try {
             String os = System.getProperty("os.name").toLowerCase();
-            if(os.contains("win")){
-                new ProcessBuilder("cmd","/c","cls").inheritIO().start().waitFor();
-            }else{
+            if (os.contains("win")) {
+                new ProcessBuilder("cmd", "/c", "cls").inheritIO().start().waitFor();
+            } else {
                 new ProcessBuilder("clear").inheritIO().start().waitFor();
             }
-        }catch(Exception e){
+        } catch (Exception e) {
             System.out.print("\033[H\033[2J");
             System.out.flush();
         }
@@ -53,7 +46,7 @@ public class Main {
     @SuppressWarnings("InfiniteLoopStatement")
     public void run() {
         while (true) {
-            if(Login()) {
+            if (Login()) {
                 Exchange();
             }
         }
@@ -63,45 +56,44 @@ public class Main {
      * 用户登录
      * @return 登录是否成功
      */
-
     private boolean Login() {
         while (true) {
             System.out.print("请输入用户名和密码[空格隔开]或输入‘-1’退出程序: ");
             String input = scanner.nextLine().trim();
 
-            if("-1".equals(input)) {
+            if ("-1".equals(input)) {
                 System.out.println("程序已退出");
                 System.exit(0);
             }
 
             String[] parts = input.split("\\s+");
-            if(parts.length != 2) {
+            if (parts.length != 2) {
                 System.out.println("请输入正确的用户名或密码");
                 continue;
             }
             String username = parts[0];
             String password = parts[1];
 
-            Type type = users.verification(username,password);
-            if(type != null) {
+            Type type = users.verification(username, password);
+            if (type != null) {
                 currentUser = username;
                 currentType = type;
-                System.out.println("欢迎您，" +currentUser+"！");
+                System.out.println("欢迎您，" + currentUser + "！");
                 System.out.println("当前选择为" + getGrade(type) + "出题");
                 return true;
-            }else {
+            } else {
                 System.out.println("请输入正确的用户名或密码");
             }
         }
     }
 
     private void Exchange() {
-        while(true){
-            System.out.print("准备生成"+getGrade(currentType)
-            +"数学题目，请输入生成题目数量[10-30]或输入‘切换为’切换难度或输入‘-1’退出当前用户：");
+        while (true) {
+            System.out.print("准备生成" + getGrade(currentType)
+                    + "数学题目，请输入生成题目数量[10-30]或输入‘切换为’切换难度或输入‘-1’退出当前用户：");
             String input = scanner.nextLine().trim();
 
-            if(input.startsWith("切换为")) {
+            if (input.startsWith("切换为")) {
                 Change(input);
                 continue;
             }
@@ -109,7 +101,7 @@ public class Main {
             try {
                 int number = Integer.parseInt(input);
 
-                if(number==-1){
+                if (number == -1) {
                     currentType = null;
                     currentUser = null;
                     clearScreen();
@@ -117,12 +109,12 @@ public class Main {
                     return;
                 }
 
-                if(number<10||number>30){
+                if (number < 10 || number > 30) {
                     System.out.println("题目数量必须在10-30之间");
                     continue;
                 }
-               makeAndSaveQuestions(number);
-            }catch(NumberFormatException e){
+                makeAndSaveQuestions(number);
+            } catch (NumberFormatException e) {
                 System.out.println("请输入有效数字");
             }
         }
@@ -132,11 +124,10 @@ public class Main {
      * 切换命令
      * @param input 切换命令
      */
-
     private void Change(String input) {
-        String result=input.substring(3).trim();
+        String result = input.substring(3).trim();
 
-        Type newType=null;
+        Type newType = null;
         switch (result) {
             case "小学":
                 newType = Type.primary;
@@ -147,16 +138,15 @@ public class Main {
             case "高中":
                 newType = Type.high;
                 break;
-            default:
         }
 
-        if(newType==null) {
+        if (newType == null) {
             System.out.println("请输入小学、初中和高中三个选项中的一个");
             return;
         }
 
-        currentType=newType;
-        System.out.println("成功切换为‘"+getGrade(newType)
+        currentType = newType;
+        System.out.println("成功切换为‘" + getGrade(newType)
                 + "’!");
     }
 
@@ -164,21 +154,20 @@ public class Main {
      * 生成并保存题目（附带查重功能-在makeQuestions方法中实现）
      * @param number 题目数量
      */
-
     private void makeAndSaveQuestions(int number) {
         QuestionMaker maker = createMaker(currentType);
-        java.util.Set<String> exQuestions=
+        java.util.Set<String> exQuestions =
                 questionManager.loadQuestions(currentUser);
 
-        java.util.List<String> questions=
-                maker.makeQuestions(number,exQuestions);
+        java.util.List<String> questions =
+                maker.makeQuestions(number, exQuestions);
 
-        if(questions.size()<number){
-            System.out.println("警告：由于查重限制，实际生成题目数量为：" + questions.size()+"道");
+        if (questions.size() < number) {
+            System.out.println("警告：由于查重限制，实际生成题目数量为：" + questions.size() + "道");
         }
 
-        questionManager.saveQuestions(currentUser,questions);
-        System.out.println(questions.size()+"道题目生成完成");
+        questionManager.saveQuestions(currentUser, questions);
+        System.out.println(questions.size() + "道题目生成完成");
     }
 
     /**
@@ -186,7 +175,6 @@ public class Main {
      * @param type 用户类型
      * @return 题目生成
      */
-
     private QuestionMaker createMaker(Type type) {
         switch (type) {
             case primary:
@@ -196,7 +184,7 @@ public class Main {
             case high:
                 return new HighMaker();
             default:
-                throw new IllegalArgumentException("未知的输入"+type);
+                throw new IllegalArgumentException("未知的输入" + type);
         }
     }
 
@@ -204,4 +192,4 @@ public class Main {
         Main main = new Main();
         main.run();
     }
-}
+}

src/Program/Manager.java

@@ -1,18 +1,15 @@
-package Program;
+package     Program;
 
 import java.util.Set;
 import java.util.List;
 
-/**
- * 文件管理接口
- */
 public interface Manager {
+
     /**
      * 保存题目到文件
      * @param username 用户名
      * @param questions 题目列表
      */
-
     void saveQuestions(String username, List<String> questions);
 
     /**
@@ -20,6 +17,5 @@ public interface Manager {
      * @param username 用户名
      * @return 历史题目集合
      */
-
     Set<String> loadQuestions(String username);
 }

src/Program/MiddleMaker.java

@@ -1,48 +1,46 @@
 package Program;
 
 public class MiddleMaker extends QuestionMaker {
-    private static final char[] operators = {'+', '-', '*', '/'};
+    private static final char[] OPERATORS = {'+', '-', '*', '/'};
 
     /**
      * 为式子添加平方或平方根
      * @return 添加平方或平方根后的式子
      */
-
     @Override
-
     protected String makeOneQuestion() {
         StringBuilder question = new StringBuilder();
         boolean check = false;
 
-        int count=rand.nextInt(4) + 2;
-        int squareOrRoot=rand.nextInt(count);
+        int count = rand.nextInt(4) + 2;
+        int squareOrRoot = rand.nextInt(count);
 
-        for(int i = 0; i < count; i++){
-            if(i > 0) {
-                char operator = operators[rand.nextInt(operators.length)];
+        for (int i = 0; i < count; i++) {
+            if (i > 0) {
+                char operator = OPERATORS[rand.nextInt(OPERATORS.length)];
                 question.append(" ").append(operator).append(" ");
             }
 
-            int random=randomMaker();
+            int random = randomMaker();
 
-            if(i==squareOrRoot&&!check) {
-                if(rand.nextBoolean()) {
+            if (i == squareOrRoot && !check) {
+                if (rand.nextBoolean()) {
                     question.append("pow(").append(random).append(",2)");
-                }else{
+                } else {
                     question.append("sqrt(").append(random).append(")");
                 }
                 check = true;
-            }else{
+            } else {
                 question.append(random);
             }
         }
 
-        if(!check){
-            int random=randomMaker();
-            char operator = operators[rand.nextInt(operators.length)];
-            if(rand.nextBoolean()) {
+        if (!check) {
+            int random = randomMaker();
+            char operator = OPERATORS[rand.nextInt(OPERATORS.length)];
+            if (rand.nextBoolean()) {
                 question.append(" ").append(operator).append(" pow(").append(random).append(",2)");
-            }else{
+            } else {
                 question.append(" ").append(operator).append(" sqrt(").append(random).append(")");
             }
         }
@@ -50,8 +48,7 @@ public class MiddleMaker extends QuestionMaker {
     }
 
     @Override
-
     protected boolean checkQuestion(String question) {
         return question.contains("pow(") || question.contains("sqrt(");
     }
-}
+}

src/Program/PrimaryMaker.java

@@ -1,56 +1,52 @@
 package Program;
 
 public class PrimaryMaker extends QuestionMaker {
-    private static final char[] operators = {'+', '-', '*', '/'};
+    private static final char[] OPERATORS = {'+', '-', '*', '/'};
 
     /**
      * 添加括号
      * @param expression 原式
      * @return 添加括号后的式子
      */
-
-    protected String BracketsMaker(String expression){
+    protected String bracketsMaker(String expression) {
         String[] sum = expression.split(" ");
 
-        // 只有当式子长度>=5时才添加括号
-        if(sum.length >= 5){
+        if (sum.length >= 5) {
             int maxStart = (sum.length - 5) / 2;
-            if(maxStart > 0){
+            if (maxStart > 0) {
                 int start = (rand.nextInt(maxStart) + 1) * 2;
                 int minEnd = start + 2;
                 int maxEnd = Math.min(sum.length - 3, start + 4);
 
-                if(maxEnd > minEnd){
+                if (maxEnd > minEnd) {
                     int end = minEnd + (rand.nextInt((maxEnd - minEnd) / 2 + 1)) * 2;
                     StringBuilder result = getBuilder(sum, start, end);
                     return result.toString();
                 }
             }
 
-            // 如果上述逻辑没有添加括号，强制在前三个元素周围添加括号
             StringBuilder result = new StringBuilder();
             result.append("(").append(sum[0]).append(" ").append(sum[1]).append(" ").append(sum[2]).append(")");
-            for(int i = 3; i < sum.length; i++){
+            for (int i = 3; i < sum.length; i++) {
                 result.append(" ").append(sum[i]);
             }
             return result.toString();
         }
 
-        // 对于长度<5的短式，直接返回原式，不添加括号
         return expression;
     }
 
     private static StringBuilder getBuilder(String[] sum, int start, int end) {
         StringBuilder result = new StringBuilder();
-        for(int i = 0; i < sum.length; i++){
-            if(i == start){
+        for (int i = 0; i < sum.length; i++) {
+            if (i == start) {
                 result.append("(");
             }
             result.append(sum[i]);
-            if(i == end){
+            if (i == end) {
                 result.append(")");
             }
-            if(i < sum.length - 1){
+            if (i < sum.length - 1) {
                 result.append(" ");
             }
         }
@@ -64,12 +60,12 @@ public class PrimaryMaker extends QuestionMaker {
 
         question.append(randomMaker());
 
-        for(int i = 1; i < count; i++){
-            char operator = operators[rand.nextInt(operators.length)];
+        for (int i = 1; i < count; i++) {
+            char operator = OPERATORS[rand.nextInt(OPERATORS.length)];
             int randNum = randomMaker();
             question.append(" ").append(operator).append(" ").append(randNum);
         }
-        return BracketsMaker(question.toString());
+        return bracketsMaker(question.toString());
     }
 
     @Override

src/Program/QuestionMaker.java

@@ -13,9 +13,8 @@ public abstract class QuestionMaker {
      * 生成随机数
      * @return 1-100的随机数
      */
-
-    protected int randomMaker(){
-        return rand.nextInt(100)+1;
+    protected int randomMaker() {
+        return rand.nextInt(100) + 1;
     }
 
     /**
@@ -24,14 +23,13 @@ public abstract class QuestionMaker {
      * @param exQuestions 题目集合
      * @return 生成的不重复题目列表
      */
+    public List<String> makeQuestions(int number, Set<String> exQuestions) {
+        List<String> questions = new ArrayList<>();
+        int sum = 0;
 
-    public List<String> makeQuestions(int number,Set<String> exQuestions) {
-        List<String> questions=new ArrayList<>();
-        int sum=0;
-
-        while(questions.size()<number&&sum<MAX_QUESTIONS) {
-            String question=makeOneQuestion();
-            if(checkQuestion(question)&&!exQuestions.contains(question)){
+        while (questions.size() < number && sum < MAX_QUESTIONS) {
+            String question = makeOneQuestion();
+            if (checkQuestion(question) && !exQuestions.contains(question)) {
                 questions.add(question);
                 exQuestions.add(question);
             }
@@ -44,7 +42,6 @@ public abstract class QuestionMaker {
      * 生成单个题目
      * @return 题目
      */
-
     protected abstract String makeOneQuestion();
 
     /**
@@ -52,7 +49,5 @@ public abstract class QuestionMaker {
      * @param question 题目
      * @return 是否符合要求
      */
-
     protected abstract boolean checkQuestion(String question);
-
-}
+}

src/Program/QuestionManager.java

@@ -17,20 +17,20 @@ public class QuestionManager implements Manager {
 
     @Override
     public void saveQuestions(String username, List<String> questions) {
-        File userFile = new File(QUESTIONS_FILE+File.separator+username);
+        File userFile = new File(QUESTIONS_FILE + File.separator + username);
         if (!userFile.exists()) {
-            if(!userFile.mkdirs()){
+            if (!userFile.mkdirs()) {
                 System.err.println("创建目录失败: " + userFile.getPath());
-                return; // 或者抛出异常
+                return;
             }
         }
 
         LocalDateTime now = LocalDateTime.now();
         String fileName = now.format(DateTimeFormatter.ofPattern("yyyy-MM-dd-HH-mm-ss"))
-                +".txt";
-        File questionsFile = new File(userFile,fileName);
+                + ".txt";
+        File questionsFile = new File(userFile, fileName);
 
-        try(PrintWriter writer=new PrintWriter(new FileWriter(questionsFile))) {
+        try (PrintWriter writer = new PrintWriter(new FileWriter(questionsFile))) {
             for (int i = 0; i < questions.size(); i++) {
                 writer.println((i + 1) + ". " + questions.get(i));
                 if (i < questions.size() - 1) {
@@ -38,38 +38,38 @@ public class QuestionManager implements Manager {
                 }
             }
             System.out.println("文件已保存至：" + questionsFile.getPath());
-        } catch (IOException e){
+        } catch (IOException e) {
             System.err.println("保存文件失败: " + e.getMessage());
         }
     }
 
     @Override
-    public Set<String> loadQuestions(String username){
+    public Set<String> loadQuestions(String username) {
         Set<String> questions = new HashSet<>();
-        File userFile = new File(QUESTIONS_FILE+File.separator+username);
+        File userFile = new File(QUESTIONS_FILE + File.separator + username);
 
-        if(!userFile.exists()||!userFile.isDirectory()) {
+        if (!userFile.exists() || !userFile.isDirectory()) {
             return questions;
         }
 
         File[] files = userFile.listFiles((dir, name) -> name.endsWith(".txt"));
-        if(files==null) {
+        if (files == null) {
             return questions;
         }
         for (File file : files) {
-            try(BufferedReader reader=new BufferedReader(new FileReader(file))){
+            try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
                 String line;
-                while((line= reader.readLine())!=null){
+                while ((line = reader.readLine()) != null) {
                     line = line.trim();
-                    if(line.matches("\\d+\\.\\s+.*")){
+                    if (line.matches("\\d+\\.\\s+.*")) {
                         String question = line.substring(line.indexOf('.') + 1).trim();
                         questions.add(question);
                     }
                 }
-            }catch(IOException e){
+            } catch (IOException e) {
                 System.err.println("读取文件失败: " + file.getName() + " - " + e.getMessage());
             }
         }
         return questions;
     }
-}
+}

src/Program/Type.java

@@ -1,10 +1,7 @@
 package Program;
 
-/**
- * 用户类型
- */
 public enum Type {
     primary,
     middle,
     high
-}
+}

src/Program/Users.java

@@ -0,0 +1,42 @@
+package Program;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Users {
+    private static final Map<String, String> USERS = new HashMap<>();
+    static {
+        USERS.put("张三1", "123");
+        USERS.put("张三2", "123");
+        USERS.put("张三3", "123");
+
+        USERS.put("李四1", "123");
+        USERS.put("李四2", "123");
+        USERS.put("李四3", "123");
+
+        USERS.put("王五1", "123");
+        USERS.put("王五2", "123");
+        USERS.put("王五3", "123");
+    }
+
+    /**
+     * 用户认证
+     * @param username 用户名
+     * @param password 密码
+     * @return 用户类型，认证失败返回null
+     */
+    public Type verification(String username, String password) {
+        if (!USERS.containsKey(username) || !USERS.get(username).equals(password)) {
+            return null;
+        }
+
+        if (username.startsWith("张三")) {
+            return Type.primary;
+        } else if (username.startsWith("李四")) {
+            return Type.middle;
+        } else if (username.startsWith("王五")) {
+            return Type.high;
+        }
+        return null;
+    }
+}

src/Users.java

@@ -1,43 +0,0 @@
-package Program;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class Users {
-    private static final Map<String,String> users = new HashMap<>();
-    static {
-        users.put("张三1","123");
-        users.put("张三2","123");
-        users.put("张三3","123");
-
-        users.put("李四1","123");
-        users.put("李四2","123");
-        users.put("李四3","123");
-
-        users.put("王五1","123");
-        users.put("王五2","123");
-        users.put("王五3","123");
-    }
-
-    /**
-     * 用户认证
-     * @param username 用户名
-     * @param password 密码
-     * @return 用户类型，认证失败返回null
-     */
-
-    public Type verification(String username,String password) {
-        if(!users.containsKey(username)||!users.get(username).equals(password)) {
-            return null;
-        }
-
-        if(username.startsWith("张三")){
-            return Type.primary;
-        }else if(username.startsWith("李四")){
-            return Type.middle;
-        }else if(username.startsWith("王五")){
-            return Type.high;
-        }
-        return null;
-    }
-}