From f4cdcf48944a1cdb845632b43946c4ac543f6bf1 Mon Sep 17 00:00:00 2001
From: YZY <1104325451@qq.com>
Date: Wed, 9 Apr 2025 20:31:51 +0800
Subject: [PATCH] xiu2
---
server/.idea/workspace.xml | 5 +
.../main/java/self/cases/teams/Student.java | 351 ++++++++++++++++++
.../self/cases/teams/CourseManager.class | Bin 0 -> 2036 bytes
.../classes/self/cases/teams/FileUtil.class | Bin 0 -> 2647 bytes
.../classes/self/cases/teams/InputUtil.class | Bin 0 -> 1552 bytes
.../classes/self/cases/teams/Student.class | Bin 0 -> 3421 bytes
.../cases/teams/StudentManagementSystem.class | Bin 0 -> 11081 bytes
.../classes/self/cases/teams/utils/Tea.class | Bin 0 -> 2000 bytes
8 files changed, 356 insertions(+)
create mode 100644 server/src/main/java/self/cases/teams/Student.java
create mode 100644 server/target/classes/self/cases/teams/CourseManager.class
create mode 100644 server/target/classes/self/cases/teams/FileUtil.class
create mode 100644 server/target/classes/self/cases/teams/InputUtil.class
create mode 100644 server/target/classes/self/cases/teams/Student.class
create mode 100644 server/target/classes/self/cases/teams/StudentManagementSystem.class
create mode 100644 server/target/classes/self/cases/teams/utils/Tea.class
diff --git a/server/.idea/workspace.xml b/server/.idea/workspace.xml
index 0d5a414d..a74db1e5 100644
--- a/server/.idea/workspace.xml
+++ b/server/.idea/workspace.xml
@@ -78,6 +78,10 @@
+
+
+
+
@@ -140,6 +144,7 @@
+
diff --git a/server/src/main/java/self/cases/teams/Student.java b/server/src/main/java/self/cases/teams/Student.java
new file mode 100644
index 00000000..005c817f
--- /dev/null
+++ b/server/src/main/java/self/cases/teams/Student.java
@@ -0,0 +1,351 @@
+package self.cases.teams;
+
+import java.io.*;
+import java.text.SimpleDateFormat;
+import java.util.*;
+import java.util.stream.Collectors;
+
+// 学生类
+class Student implements Serializable {
+ private String id;
+ private String name;
+ private int age;
+ private String className;
+ private Date enrollDate;
+ private Map scores;
+
+ public Student(String id, String name, int age, String className) {
+ this.id = id;
+ this.name = name;
+ this.age = age;
+ this.className = className;
+ this.enrollDate = new Date();
+ this.scores = new HashMap<>();
+ }
+
+ // Getter和Setter方法
+ public String getId() { return id; }
+ public String getName() { return name; }
+ public int getAge() { return age; }
+ public String getClassName() { return className; }
+ public Date getEnrollDate() { return enrollDate; }
+ public Map getScores() { return scores; }
+
+ public void updateScore(String course, double score) {
+ scores.put(course, score);
+ }
+
+ public double calculateAverage() {
+ return scores.values().stream()
+ .mapToDouble(Double::doubleValue)
+ .average()
+ .orElse(0.0);
+ }
+
+ @Override
+ public String toString() {
+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
+ return String.format("学号: %s\n姓名: %s\n年龄: %d\n班级: %s\n入学日期: %s",
+ id, name, age, className, sdf.format(enrollDate));
+ }
+}
+
+// 课程管理类
+class CourseManager {
+ private static final List AVAILABLE_COURSES = Arrays.asList(
+ "数学", "语文", "英语", "物理", "化学"
+ );
+
+ public static boolean isValidCourse(String course) {
+ return AVAILABLE_COURSES.contains(course);
+ }
+
+ public static void showAvailableCourses() {
+ System.out.println("可选课程列表:");
+ AVAILABLE_COURSES.forEach(c -> System.out.print(c + " "));
+ System.out.println();
+ }
+}
+
+// 文件工具类
+class FileUtil {
+ private static final String DATA_FILE = "students.dat";
+
+ public static void saveData(List students) {
+ try (ObjectOutputStream oos = new ObjectOutputStream(
+ new FileOutputStream(DATA_FILE))) {
+ oos.writeObject(students);
+ } catch (IOException e) {
+ System.err.println("数据保存失败: " + e.getMessage());
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ public static List loadData() {
+ File file = new File(DATA_FILE);
+ if (!file.exists()) return new ArrayList<>();
+
+ try (ObjectInputStream ois = new ObjectInputStream(
+ new FileInputStream(DATA_FILE))) {
+ return (List) ois.readObject();
+ } catch (IOException | ClassNotFoundException e) {
+ System.err.println("数据加载失败: " + e.getMessage());
+ return new ArrayList<>();
+ }
+ }
+}
+
+// 输入工具类
+class InputUtil {
+ private static final Scanner scanner = new Scanner(System.in);
+
+ public static int getIntInput(String prompt) {
+ while (true) {
+ System.out.print(prompt);
+ try {
+ return Integer.parseInt(scanner.nextLine());
+ } catch (NumberFormatException e) {
+ System.out.println("输入无效，请输入整数！");
+ }
+ }
+ }
+
+ public static String getStringInput(String prompt) {
+ System.out.print(prompt);
+ return scanner.nextLine().trim();
+ }
+
+ public static double getDoubleInput(String prompt) {
+ while (true) {
+ System.out.print(prompt);
+ try {
+ return Double.parseDouble(scanner.nextLine());
+ } catch (NumberFormatException e) {
+ System.out.println("输入无效，请输入数字！");
+ }
+ }
+ }
+}
+
+// 主系统类
+class StudentManagementSystem {
+ private List students;
+ private boolean isRunning = true;
+
+ public StudentManagementSystem() {
+ students = FileUtil.loadData();
+ }
+
+ public void start() {
+ while (isRunning) {
+ showMainMenu();
+ int choice = InputUtil.getIntInput("请选择操作：");
+ handleMainMenu(choice);
+ }
+ }
+
+ private void showMainMenu() {
+ System.out.println("\n==== 学生信息管理系统 ====");
+ System.out.println("1. 添加学生");
+ System.out.println("2. 查询学生");
+ System.out.println("3. 录入成绩");
+ System.out.println("4. 显示统计");
+ System.out.println("5. 删除学生");
+ System.out.println("6. 保存数据");
+ System.out.println("7. 退出系统");
+ }
+
+ private void handleMainMenu(int choice) {
+ switch (choice) {
+// case 1 -> addStudent();
+// case 2 -> searchStudent();
+// case 3 -> inputScore();
+// case 4 -> showStatistics();
+// case 5 -> deleteStudent();
+// case 6 -> saveData();
+// case 7 -> exitSystem();
+// default -> System.out.println("无效选项！");
+ }
+ }
+
+ private void addStudent() {
+ String id = InputUtil.getStringInput("请输入学号：");
+ if (isStudentExist(id)) {
+ System.out.println("该学号已存在！");
+ return;
+ }
+
+ String name = InputUtil.getStringInput("请输入姓名：");
+ int age = InputUtil.getIntInput("请输入年龄：");
+ String className = InputUtil.getStringInput("请输入班级：");
+
+ Student student = new Student(id, name, age, className);
+ students.add(student);
+ System.out.println("学生添加成功！");
+ }
+
+ private void searchStudent() {
+ System.out.println("\n==== 查询选项 ====");
+ System.out.println("1. 按学号查询");
+ System.out.println("2. 按姓名查询");
+ System.out.println("3. 显示全部");
+ int choice = InputUtil.getIntInput("请选择查询方式：");
+
+ switch (choice) {
+// case 1 -> searchById();
+// case 2 -> searchByName();
+// case 3 -> showAllStudents();
+// default -> System.out.println("无效选项！");
+ }
+ }
+
+ private void searchById() {
+ String id = InputUtil.getStringInput("请输入学号：");
+ students.stream()
+ .filter(s -> s.getId().equals(id))
+ .findFirst();
+
+ }
+
+ private void searchByName() {
+ String name = InputUtil.getStringInput("请输入姓名：");
+ List result = null;
+ try {
+ students.stream()
+ .filter(s -> s.getName().equalsIgnoreCase(name))
+ .wait();
+ } catch (InterruptedException e) {
+ throw new RuntimeException(e);
+ }
+
+ if (result.isEmpty()) {
+ System.out.println("找不到该学生");
+ } else {
+ result.forEach(System.out::println);
+ }
+ }
+
+ private void showAllStudents() {
+ if (students.isEmpty()) {
+ System.out.println("当前没有学生记录");
+ return;
+ }
+ students.forEach(s -> {
+ System.out.println(s);
+ System.out.println("--------------------");
+ });
+ }
+
+ private void inputScore() {
+ String id = InputUtil.getStringInput("请输入学号：");
+ Student student = findStudentById(id);
+ if (student == null) {
+ System.out.println("学生不存在！");
+ return;
+ }
+
+ CourseManager.showAvailableCourses();
+ String course = InputUtil.getStringInput("请输入课程名称：");
+ if (!CourseManager.isValidCourse(course)) {
+ System.out.println("无效课程！");
+ return;
+ }
+
+ double score = InputUtil.getDoubleInput("请输入成绩：");
+ student.updateScore(course, score);
+ System.out.println("成绩录入成功！");
+ }
+
+ private void showStatistics() {
+ System.out.println("\n==== 统计信息 ====");
+ System.out.println("1. 班级人数统计");
+ System.out.println("2. 课程平均分");
+ System.out.println("3. 学生个人成绩");
+ int choice = InputUtil.getIntInput("请选择统计类型：");
+
+ switch (choice) {
+// case 1 -> showClassStatistics();
+// case 2 -> showCourseStatistics();
+// case 3 -> showStudentScores();
+// default -> System.out.println("无效选项！");
+ }
+ }
+
+ private void showClassStatistics() {
+ Map classCount = students.stream()
+ .collect(Collectors.groupingBy(
+ Student::getClassName,
+ Collectors.counting()));
+
+ classCount.forEach((className, count) ->
+ System.out.printf("班级 %s: %d 人\n", className, count));
+ }
+
+ private void showCourseStatistics() {
+ Map courseAverages = new HashMap<>();
+ students.forEach(student ->
+ student.getScores().forEach((course, score) ->
+ courseAverages.merge(course, score, Double::sum)));
+
+ courseAverages.forEach((course, total) -> {
+ long count = students.stream()
+ .filter(s -> s.getScores().containsKey(course))
+ .count();
+ double average = count > 0 ? total / count : 0;
+ System.out.printf("%s 平均分: %.2f\n", course, average);
+ });
+ }
+
+ private void showStudentScores() {
+ String id = InputUtil.getStringInput("请输入学号：");
+ Student student = findStudentById(id);
+ if (student == null) {
+ System.out.println("学生不存在！");
+ return;
+ }
+
+ System.out.println(student);
+ if (student.getScores().isEmpty()) {
+ System.out.println("暂无成绩记录");
+ return;
+ }
+
+ student.getScores().forEach((course, score) ->
+ System.out.printf("%s: %.2f\n", course, score));
+ System.out.printf("平均分: %.2f\n", student.calculateAverage());
+ }
+
+ private void deleteStudent() {
+ String id = InputUtil.getStringInput("请输入要删除的学号：");
+ boolean removed = students.removeIf(s -> s.getId().equals(id));
+ System.out.println(removed ? "删除成功！" : "学生不存在！");
+ }
+
+ private void saveData() {
+ FileUtil.saveData(students);
+ System.out.println("数据已保存！");
+ }
+
+ private void exitSystem() {
+ isRunning = false;
+ System.out.println("正在退出系统...");
+ saveData();
+ System.out.println("谢谢使用！");
+ }
+
+ private boolean isStudentExist(String id) {
+ return students.stream()
+ .anyMatch(s -> s.getId().equals(id));
+ }
+
+ private Student findStudentById(String id) {
+ return students.stream()
+ .filter(s -> s.getId().equals(id))
+ .findFirst()
+ .orElse(null);
+ }
+
+ public static void main(String[] args) {
+ new StudentManagementSystem().start();
+ }
+}
\ No newline at end of file
diff --git a/server/target/classes/self/cases/teams/CourseManager.class b/server/target/classes/self/cases/teams/CourseManager.class
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diff --git a/server/target/classes/self/cases/teams/StudentManagementSystem.class b/server/target/classes/self/cases/teams/StudentManagementSystem.class
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