ADD file via upload

Student.py

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+from datetime import date
+
+class Student:
+    def __init__(self, sid: str, name: str, height: str, birth_date: date | str, enrollment_date: date | str, class_name: str):
+        self.sid = sid
+        self.name = name.strip()
+        self.height = int(height)  # 转换为整数类型
+        self.birth_date = birth_date if isinstance(birth_date, date) else date.fromisoformat(birth_date)
+        self.enrollment_date = enrollment_date if isinstance(enrollment_date, date) else date.fromisoformat(enrollment_date)
+        self.class_name = class_name
+        self._validation_errors = []
+        self._validate_height()
+        self._validate_date()
+        self._validate_name()
+
+    def _validate_height(self) -> None:
+        if not (50 <= self.height <= 250):
+            self._validation_errors.append(f"身高{self.height}cm超出合理范围")
+
+    def _validate_name(self) -> None:
+        if not (2 <= len(self.name) <= 20) or not self.name.isprintable():
+            self._validation_errors.append("姓名长度需在2-20个字符之间且为可打印字符")
+        if not self.name.isprintable():
+            self._validation_errors.append("姓名长度需在2-20个字符之间")
+
+    def _validate_date(self) -> None:
+        today = date.today()
+        if self.birth_date > today:
+            self._validation_errors.append('出生日期不能在未来')
+        if self.enrollment_date > today:
+            self._validation_errors.append('入学日期不能在未来')
+        if self.birth_date > self.enrollment_date:
+            self._validation_errors.append('入学日期不能早于出生日期')
+
+    @property
+    def is_valid(self) -> bool:
+        return len(self._validation_errors) == 0
+
+    def get_errors(self) -> list[str]:
+        return self._validation_errors.copy()
+
+    def __eq__(self, other) -> bool:
+        if not isinstance(other, Student):
+            return NotImplemented
+        return (self.sid == other.sid and
+                self.name == other.name and
+                self.height == other.height and
+                self.birth_date == other.birth_date and
+                self.enrollment_date == other.enrollment_date and
+                self.class_name == other.class_name
+                )
+
+    @classmethod
+    def from_dict(cls, data: dict) -> 'Student':
+        birth_date = data['birth_date'] if isinstance(data['birth_date'], date) else date.fromisoformat(
+            data['birth_date'])
+        enrollment_date = data['enrollment_date'] if isinstance(data['enrollment_date'], date) else date.fromisoformat(
+            data['enrollment_date'])
+        return cls(
+            sid=data['sid'],
+            name=data['name'].strip(),
+            height=data['height'],
+            birth_date=birth_date,
+            enrollment_date=enrollment_date,
+            class_name=data['class_name']
+        )
+
+    def to_dict(self):
+        return {
+                'sid': self.sid,
+                'name': self.name,
+                'height': self.height,
+                'birth_date': self.birth_date.isoformat(),
+                'enrollment_date': self.enrollment_date.isoformat(),
+                'class_name': self.class_name
+            }
+
+    def __repr__(self) -> str:
+        return (
+            f"{self.__class__.__name__}("
+            f"sid='{self.sid}', "
+            f"name='{self.name}',"
+            f"height={self.height},"
+            f"birth_date=date({self.birth_date.year},{self.birth_date.month},{self.birth_date.day}), "
+            f"enrollment_date=date({self.enrollment_date.year},{self.enrollment_date.month},{self.enrollment_date.day}), "
+            f"class_name='{self.class_name}'"
+            f")"
+        )
+
+

student_dal_json.py

@@ -0,0 +1,290 @@
+import json
+import os, sys,csv
+from datetime import date
+from typing import List, Optional
+from model.Student import Student
+
+import csv
+current_dir = os.path.dirname(os.path.abspath(__file__))
+parent_dir = os.path.dirname(current_dir)
+sys.path.append(parent_dir)
+from model.Student import Student
+
+
+class StudentDALJSON:
+    def __init__(self, file_path="students.json"):
+        self.file_path = file_path
+
+    def get_all_students(self):
+        try:
+            with open(self.file_path, 'r', encoding='utf-8') as file:
+                student_dicts = json.load(file)
+                return [Student.from_dict(s) for s in student_dicts]
+        except (FileNotFoundError, json.JSONDecodeError):
+            return []
+
+    def save_students(self, students):
+        student_dicts = [student.to_dict() for student in students]
+        with open(self.file_path, 'w', encoding='utf-8') as file:
+            json.dump(student_dicts, file, ensure_ascii=False, indent=4)
+
+    # 新增：导出为JSON
+    def export_to_json(self, file_path=None):
+        if not file_path:
+            file_path = self.file_path
+        students = self.get_all_students()
+        if not students:
+            print("没有数据可导出")
+            return
+        try:
+            with open(file_path, 'w', encoding='utf-8') as f:
+                json.dump([s.to_dict() for s in students], f, ensure_ascii=False, indent=4)
+            print(f"数据已导出到 {file_path}")
+        except Exception as e:
+            print(f"导出失败: {e}")
+
+    # 新增：导出为CSV
+    def export_to_csv(self, file_path="students.csv"):
+        students = self.get_all_students()
+        if not students:
+            print("没有数据可导出")
+            return
+        try:
+            with open(file_path, 'w', encoding='utf-8-sig', newline='') as f:
+                writer = csv.DictWriter(
+                    f,
+                    fieldnames=[
+                        'student_id', 'name', 'gender', 'age', 'class_name',
+                        'major', 'phone', 'email', 'id_number',
+                        'height', 'weight', 'birth_date', 'enrollment_date'
+                    ]
+                )
+                writer.writeheader()
+                for student in students:
+                    data = student.to_dict()
+                    # 将日期对象转换为字符串
+                    data['birth_date'] = data['birth_date'].isoformat()
+                    data['enrollment_date'] = data['enrollment_date'].isoformat()
+                    writer.writerow(data)
+            print(f"数据已导出到 {file_path}")
+        except Exception as e:
+            print(f"导出失败: {e}")
+
+    # 新增：从JSON导入
+    def import_from_json(self, file_path):
+        try:
+            with open(file_path, 'r', encoding='utf-8') as f:
+                student_dicts = json.load(f)
+            students = []
+            for data in student_dicts:
+                # 转换日期字符串为日期对象
+                data['birth_date'] = date.fromisoformat(data['birth_date'])
+                data['enrollment_date'] = date.fromisoformat(data['enrollment_date'])
+                students.append(Student.from_dict(data))
+            self.save_students(students)
+            print(f"从 {file_path} 导入成功")
+        except FileNotFoundError:
+            print(f"文件不存在: {file_path}")
+        except json.JSONDecodeError:
+            print(f"JSON格式错误: {file_path}")
+        except Exception as e:
+            print(f"导入失败: {e}")
+
+    # 新增：从CSV导入
+    def import_from_csv(self, file_path):
+        try:
+            with open(file_path, 'r', encoding='utf-8-sig') as f:
+                reader = csv.DictReader(f)
+                student_dicts = list(reader)
+            students = []
+            for data in student_dicts:
+                # 转换数值类型
+                data['age'] = int(data['age'])
+                data['height'] = float(data['height'])
+                data['weight'] = float(data['weight'])
+                # 转换日期类型
+                data['birth_date'] = date.fromisoformat(data['birth_date'])
+                data['enrollment_date'] = date.fromisoformat(data['enrollment_date'])
+                students.append(Student.from_dict(data))
+            self.save_students(students)
+            print(f"从 {file_path} 导入成功")
+        except FileNotFoundError:
+            print(f"文件不存在: {file_path}")
+        except Exception as e:
+            print(f"导入失败: {e}")
+class StudentDAL:
+    def __init__(self, file_path: str):
+        self.file_path = file_path
+        self._ensure_file_exists()
+
+    def _ensure_file_exists(self):
+        if not os.path.exists(self.file_path):
+            with open(self.file_path, mode='w', encoding='utf-8') as file:
+                json.dump([], file)
+
+    def save_students(self, students: List[Student]) -> None:
+        student_dicts = [student.to_dict() for student in students]
+        with open(self.file_path, mode='w', encoding='utf-8') as file:
+            json.dump(student_dicts, file, ensure_ascii=False, indent=4)
+
+    def load_students(self) -> List[Student]:
+        with open(self.file_path, mode='r', encoding='utf-8') as file:
+            student_dicts = json.load(file)
+            return [Student.from_dict(student_dict) for student_dict in student_dicts]
+
+    def add_student(self, student: Student) -> bool:
+        students = self.load_students()
+        for existing_student in students:
+            if existing_student.sid == student.sid:
+                return False
+        students.append(student)
+        self.save_students(students)
+        return True
+
+    def find_student_by_sid(self, sid: str) -> Optional[Student]:
+        students = self.load_students()
+        for student in students:
+            if student.sid == sid:
+                return student
+        return None
+
+    def find_students_by_name(self, name: str) ->List[Student]:
+        students = self.load_students()
+        return [student for student in students if name.lower() in student.name.lower()]
+
+    def find_students_by_class_name(self, class_name: str) ->List[Student]:
+        students = self.load_students()
+        return [s for s in students if class_name.lower() in s.class_name.lower()]
+
+    def get_all_students(self) -> List[Student]:
+        return self.load_students()
+
+    def update_student(self, sid: str, updated_student: Student) -> bool:
+        students = self.load_students()
+        for i, student in enumerate(students):
+            if student.sid == sid:
+                students[i] = updated_student
+                self.save_students(students)
+                return True
+        return False
+
+    def update_student_partial(self, sid:str, name:Optional[str]=None, height:Optional[float]=None, birth_date:Optional[date]=None, enrollment_date:Optional[date]=None, class_name:Optional[str]=None) ->bool:
+        students = self.load_students()
+        for i, student in enumerate(students):
+            if student.sid == sid:
+                if name is not None:
+                    students[i].name = name
+                if height is not None:
+                    students[i].height = height
+                if birth_date is not None:
+                    students[i].birth_date = birth_date
+                if enrollment_date is not None:
+                    students[i].enrollment_date = enrollment_date
+                if class_name is not None:
+                    students[i].class_name = class_name
+                self.save_students(students)
+                return True
+        return False
+
+    def delete_student(self, sid: str) -> bool:
+        """根据学生 ID 删除学生"""
+        students = self.load_students()
+        initial_length = len(students)
+        students = [student for student in students if student.sid != sid]
+        if len(students) < initial_length:
+            self.save_students(students)
+            return True
+        return False
+
+    def clear_all_students(self) -> None:
+        self.save_students([])
+
+    def get_student_count(self) -> int:
+        return len(self.load_students())
+
+    def check_student_exists(self, sid: str) ->bool:
+        return self.find_student_by_sid(sid) is not None
+
+    def export_to_json(self, file_path):
+        students = self.load_students()
+        student_dicts = [student.to_dict() for student in students]
+        with open(file_path, mode='w', encoding='utf-8') as file:
+            json.dump(student_dicts, file, ensure_ascii=False, indent=4)
+
+    def import_from_json(self, file_path):
+        try:
+            with open(file_path, mode='r', encoding='utf-8') as file:
+                student_dicts = json.load(file)
+                students = [Student.from_dict(student_dict) for student_dict in student_dicts]
+                self.save_students(students)
+        except FileNotFoundError:
+            print(f"文件 {file_path} 未找到。")
+        except json.JSONDecodeError:
+            print(f"文件 {file_path} 不是有效的 JSON 文件。")
+        except ValueError as e:
+            print(f"数据转换错误: {e}")
+
+    def export_to_csv(self, file_path):
+        students = self.load_students()
+        with open(file_path, mode='w', encoding='utf-8', newline='') as file:
+            fieldnames = ['sid', 'name', 'height', 'birth_date', 'enrollment_date', 'class_name']
+            writer = csv.DictWriter(file, fieldnames=fieldnames)
+            writer.writeheader()
+            for student in students:
+                writer.writerow(student.to_dict())
+
+    def import_from_csv(self, file_path):
+        try:
+            students = []
+            with open(file_path, mode='r', encoding='utf-8') as file:
+                reader = csv.DictReader(file)
+                for row in reader:
+                    row['birth_date'] = date.fromisoformat(row['birth_date'])
+                    row['enrollment_date'] = date.fromisoformat(row['enrollment_date'])
+                    student = Student.from_dict(row)
+                    students.append(student)
+            self.save_students(students)
+        except FileNotFoundError:
+            print(f"文件 {file_path} 未找到。")
+        except ValueError as e:
+            print(f"日期格式错误: {e}")
+
+    def get_average_height(self):
+        students = self.load_students()
+        if not students:
+            return 0
+        total_height = sum(student.height for student in students)
+        return total_height / len(students)
+
+    def count_students_by_height_range(self, min_height, max_height):
+        students = self.load_students()
+        return len([student for student in students if min_height <= student.height <= max_height])
+
+    def count_students_by_enrollment_year(self, year):
+        students = self.load_students()
+        return len([student for student in students if student.enrollment_date.year == year])
+
+    def count_students_by_age_range(self, min_age, max_age):
+        today = date.today()
+        students = self.load_students()
+        return len([student for student in students if min_age <= today.year - student.birth_date.year <= max_age])
+
+    def backup_data(self, backup_path):
+        try:
+            with open(self.file_path, mode='r', encoding='utf-8') as src_file, \
+                    open(backup_path, mode='w', encoding='utf-8') as dst_file:
+                dst_file.write(src_file.read())
+            print(f"数据备份到 {backup_path} 成功。")
+        except Exception as e:
+            print(f"数据备份失败: {e}")
+
+    def restore_data(self, backup_path):
+        try:
+            with open(backup_path, mode='r', encoding='utf-8') as src_file, \
+                    open(self.file_path, mode='w', encoding='utf-8') as dst_file:
+                dst_file.write(src_file.read())
+            print(f"数据从 {backup_path} 恢复成功。")
+        except FileNotFoundError:
+            print(f"备份文件 {backup_path} 未找到。")
+        except Exception as e:
+            print(f"数据恢复失败: {e}")

studentui.py

@@ -0,0 +1,172 @@
+import os
+import re
+from datetime import date
+from bll.student_bll import StudentBLL
+from dal.student_dal_json import StudentDAL
+from model.Student import Student
+from dal.student_dal_json import StudentDALJSON  # 确保导入
+
+class StudentUI:
+    def __init__(self):
+        current_dir = os.path.dirname(os.path.abspath(__file__))
+        parent_dir = os.path.dirname(current_dir)
+        file_path = os.path.join(parent_dir, "data", "student.json")
+        dal = StudentDAL(file_path)
+        self.bll = StudentBLL(dal)
+        self.file_path = file_path
+
+
+
+    def display_menu(self):
+        """显示主菜单"""
+        os.system('cls' if os.name == 'nt' else 'clear')
+        print("*" * 50)
+        print("           学生信息管理系统 - 主菜单           ")
+        print("*" * 50)
+        print("1. 添加学生信息")
+        print("2. 删除学生信息")
+        print("3. 更新学生信息")
+        print("4. 查询学生信息")
+        print("5. 统计分析")
+        print("6. 数据导入导出")
+        print("7. 清空所有学生信息")
+        print("0. 退出系统")
+        print("*" * 50)
+
+    def display_query_menu(self):
+        """显示查询子菜单"""
+        os.system('cls' if os.name == 'nt' else 'clear')
+        print("*" * 50)
+        print("              学生信息管理系统 - 查询菜单              ")
+        print("*" * 50)
+        print("1. 查询所有学生")
+        print("2. 按身份证号查询")
+        print("3. 按学号查询")
+        print("4. 按姓名查询")
+        print("5. 按班级查询")
+        print("0. 返回上一级")
+        print("*" * 50)
+
+    def display_stats_menu(self):
+        """显示统计分析子菜单"""
+        os.system('cls' if os.name == 'nt' else 'clear')
+        print("*" * 50)
+        print("              学生信息管理系统 - 统计分析菜单              ")
+        print("*" * 50)
+        print("1. 学生总数")
+        print("2. 平均身高")
+        print("3. 按身高范围统计")
+        print("4. 按入学年份统计")
+        print("5. 按年龄范围统计")
+        print("0. 返回上一级")
+        print("*" * 50)
+
+    def display_import_export_menu(self):
+        """显示数据导入导出子菜单"""
+        os.system('cls' if os.name == 'nt' else 'clear')
+        print("*" * 50)
+        print("              学生信息管理系统 - 数据导入导出菜单              ")
+        print("*" * 50)
+        print("1. 导出数据到JSON")
+        print("2. 从JSON导入数据")
+        print("3. 导出数据到CSV")
+        print("4. 从CSV导入数据")
+        print("0. 返回上一级")
+        print("*" * 50)
+
+    def get_input(self, prompt: str) -> str:
+        """获取用户输入，添加异常处理"""
+        try:
+            return input(prompt).strip()
+        except EOFError:
+            return "0"  # 按Ctrl+D视为退出
+
+    def add_student(self):
+        """添加学生信息"""
+        os.system('cls' if os.name == 'nt' else 'clear')
+        print("*" * 50)
+        print("                    添加学生信息                    ")
+        print("*" * 50)
+
+        name = self.get_input("请输入姓名: ")
+        id_number = self.get_input("请输入身份证号: ")
+        while not re.match(r'^\d{17}[\dXx]$', id_number):
+            print("身份证号格式不正确，请输入 18 位身份证号。")
+            id_number = self.get_input("请输入身份证号: ")
+
+        while True:
+            student_id = self.get_input("请输入学号: ")
+            if re.match(r'^\d{10,15}$', student_id):  # 假设学号是10 - 15位数字
+                break
+            print("学号格式不正确，请输入10到15位数字")
+
+        gender = self.get_input("请输入性别(男/女): ")
+
+        while True:
+            try:
+                height = float(self.get_input("请输入身高(cm): "))
+                if height <= 0 or height > 250:
+                    raise ValueError
+                break
+            except ValueError:
+                print("身高必须为0到250之间的有效数值，请重新输入")
+
+        while True:
+            try:
+                weight = float(self.get_input("请输入体重(kg): "))
+                if weight <= 0 or weight > 500:
+                    raise ValueError
+                break
+            except ValueError:
+                print("体重必须为0到500之间的有效数值，请重新输入")
+
+        # 从身份证号中提取出生日期
+        birth_date_str = id_number[6:14]
+        birth_date = date(int(birth_date_str[:4]), int(birth_date_str[4:6]), int(birth_date_str[6:]))
+
+        # 修改后的日期输入验证
+        while True:
+            enrollment_date = self.get_input("请输入入学日期(YYYY-MM-DD): ")
+            try:
+                enrollment_date_obj = date.fromisoformat(enrollment_date)
+                break
+            except ValueError:
+                print("日期格式错误，请使用 YYYY-MM-DD 格式（例如：2023-09-01）")
+
+        class_name = self.get_input("请输入班级: ")
+        major = self.get_input("请输入专业: ")
+
+        # 创建 Student 对象
+        try:
+            student = Student(
+                sid=student_id,
+                name=name,
+                height=height,
+                birth_date=birth_date,  # 使用从身份证提取的出生日期
+                enrollment_date=enrollment_date_obj,
+                class_name=class_name
+            )
+            if self.bll.add_student(student):
+                print("学生信息添加成功！")
+            else:
+                print("学生信息添加失败。")
+        except ValueError as e:
+            print(f"添加学生失败: {e}")
+
+    def handle_import_export(self, choice):
+        if choice == '1':
+            file_path = self.get_input("请输入要导出的 JSON 文件路径: ")
+            self.bll.dal.export_to_json(file_path)
+            print("数据导出到 JSON 成功！")
+        elif choice == '2':
+            file_path = self.get_input("请输入要导入的 JSON 文件路径: ")
+            self.bll.dal.import_from_json(file_path)
+            print("数据从 JSON 导入成功！")
+        elif choice == '3':
+            file_path = self.get_input("请输入要导出的 CSV 文件路径: ")
+            self.bll.dal.export_to_csv(file_path)
+            print("数据导出到 CSV 成功！")
+        elif choice == '4':
+            file_path = self.get_input("请输入要导入的 CSV 文件路径: ")
+            self.bll.dal.import_from_csv(file_path)
+            print("数据从 CSV 导入成功！")