README.md

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-# wendang
-

model/abstract_dal.py

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+from abc import ABC, abstractmethod
+from typing import List, Optional
+from src.models.student import Student
+
+
+class IStudentDAL(ABC):
+    """学生信息数据访问层接口"""
+
+    @abstractmethod
+    def add_student(self, student: Student) -> bool:
+        """添加学生信息"""
+        pass
+
+    @abstractmethod
+    def delete_student(self, id_card: str) -> bool:
+        """根据身份证号删除学生信息"""
+        pass
+
+    @abstractmethod
+    def update_student(self, student: Student) -> bool:
+        """更新学生信息"""
+        pass
+
+    @abstractmethod
+    def get_by_id(self, id_card: str) -> Optional[Student]:
+        """根据身份证号获取学生信息"""
+        pass
+
+    @abstractmethod
+    def get_by_stu_id(self, stu_id: str) -> Optional[Student]:
+        """根据学号获取学生信息"""
+        pass
+
+    @abstractmethod
+    def get_all(self) -> List[Student]:
+        """获取所有学生信息"""
+        pass
+
+    @abstractmethod
+    def get_by_name(self, name: str) -> List[Student]:
+        """根据姓名查询学生信息（模糊查询）"""
+        pass
+
+    @abstractmethod
+    def get_by_class(self, class_name: str) -> List[Student]:
+        """根据班级查询学生信息（模糊查询）"""
+        pass
+
+    @abstractmethod
+    def get_by_major(self, major: str) -> List[Student]:
+        """根据专业查询学生信息（模糊查询）"""
+        pass
+
+    @abstractmethod
+    def count_students(self) -> int:
+        """统计学生总数"""
+        pass
+
+    @abstractmethod
+    def count_by_major(self, major: str) -> int:
+        """统计各专业学生人数"""
+        pass
+
+    @abstractmethod
+    def get_avg_height(self, filter_by: Optional[str] = None, filter_value: Optional[str] = None) -> float:
+        """计算平均身高"""
+        pass
+
+    @abstractmethod
+    def get_avg_weight(self, filter_by: Optional[str] = None, filter_value: Optional[str] = None) -> float:
+        """计算平均体重"""
+        pass
+
+    @abstractmethod
+    def clear_all(self) -> bool:
+        """清空所有学生信息"""
+        pass
+
+    @abstractmethod
+    def import_from_file(self, file_path: str) -> bool:
+        """从文件导入数据"""
+        pass
+
+    @abstractmethod
+    def export_to_file(self, file_path: str) -> bool:
+        """导出数据到文件"""
+        pass

model/console_ui.py

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+import sys
+from datetime import date
+from typing import Optional
+from src.models.student import Student
+from src.bll.student_service import StudentService
+
+
+class ConsoleUI:
+    def __init__(self, service: StudentService):
+        self.service = service
+
+    def run(self):
+        while True:
+            self._show_main_menu()
+            choice = input("请选择操作: ").strip()
+
+            if choice == "1":
+                self._add_student()
+            elif choice == "2":
+                self._delete_student()
+            elif choice == "3":
+                self._update_student()
+            elif choice == "4":
+                self._query_students()
+            elif choice == "5":
+                self._show_statistics()
+            elif choice == "6":
+                self._data_import_export()
+            elif choice == "7":
+                self._clear_all_data()
+            elif choice == "0":
+                print("感谢使用学生信息管理系统，再见！")
+                sys.exit(0)
+            else:
+                print("无效选择，请重新输入！")
+
+    def _show_main_menu(self):
+        print("\n" + "=" * 30)
+        print("学生信息管理系统".center(26))
+        print("=" * 30)
+        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("=" * 30)
+
+    def _add_student(self):
+        print("\n" + "=" * 30)
+        print("添加学生信息".center(26))
+        print("=" * 30)
+
+        student_data = {}
+        student_data["name"] = input("姓名: ").strip()
+        student_data["id_card"] = input("身份证号: ").strip()
+        student_data["stu_id"] = input("学号: ").strip()
+
+        # 其他可选字段输入...
+
+        try:
+            student = Student(**student_data)
+            success, msg = self.service.add_student(student)
+            print(msg)
+        except Exception as e:
+            print(f"添加失败: {str(e)}")
+
+    # 其他UI方法...

model/csv_dal.py

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+import csv
+from typing import List, Optional
+from pathlib import Path
+from datetime import date
+from src.dal.abstract_dal import IStudentDAL
+from src.models.student import Student
+
+
+class CSVStudentDAL(IStudentDAL):
+    def __init__(self, file_path: str = "data/students.csv"):
+        self.file_path = Path(file_path)
+        self.file_path.parent.mkdir(parents=True, exist_ok=True)
+        if not self.file_path.exists():
+            with open(self.file_path, "w", newline="", encoding="utf-8") as f:
+                writer = csv.writer(f)
+                writer.writerow([
+                    "name", "id_card", "stu_id", "gender",
+                    "height", "weight", "enrollment_date",
+                    "class_name", "major"
+                ])
+
+    def _read_all(self) -> List[Student]:
+        students = []
+        with open(self.file_path, "r", newline="", encoding="utf-8") as f:
+            reader = csv.DictReader(f)
+            for row in reader:
+                try:
+                    student = Student(
+                        name=row["name"],
+                        id_card=row["id_card"],
+                        stu_id=row["stu_id"],
+                        gender=bool(int(row["gender"])) if row["gender"] else None,
+                        height=int(row["height"]) if row["height"] else None,
+                        weight=float(row["weight"]) if row["weight"] else None,
+                        enrollment_date=row["enrollment_date"],
+                        class_name=row["class_name"],
+                        major=row["major"]
+                    )
+                    students.append(student)
+                except (ValueError, KeyError) as e:
+                    continue
+        return students
+
+    def _write_all(self, students: List[Student]) -> bool:
+        try:
+            with open(self.file_path, "w", newline="", encoding="utf-8") as f:
+                writer = csv.DictWriter(f, fieldnames=[
+                    "name", "id_card", "stu_id", "gender",
+                    "height", "weight", "enrollment_date",
+                    "class_name", "major"
+                ])
+                writer.writeheader()
+                for student in students:
+                    writer.writerow(student.to_dict())
+            return True
+        except Exception:
+            return False
+
+    # 实现所有抽象方法...
+    # 完整实现会根据上述_reader_all和_write_all方法完成各个接口

model/main.py

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+from src.dal.csv_dal import CSVStudentDAL
+from src.dal.json_dal import JSONStudentDAL
+from src.dal.sqlite_dal import SQLiteStudentDAL
+from src.bll.student_service import StudentService
+from src.ui.console_ui import ConsoleUI
+
+
+def main():
+    # 选择数据存储方式
+    print("请选择数据存储方式:")
+    print("1. CSV文件")
+    print("2. JSON文件")
+    print("3. SQLite数据库")
+    choice = input("请选择(1-3): ").strip()
+
+    if choice == "1":
+        dal = CSVStudentDAL()
+    elif choice == "2":
+        dal = JSONStudentDAL()
+    elif choice == "3":
+        dal = SQLiteStudentDAL()
+    else:
+        print("无效选择，默认使用CSV文件存储")
+        dal = CSVStudentDAL()
+
+    service = StudentService(dal)
+    ui = ConsoleUI(service)
+    ui.run()
+
+
+if __name__ == "__main__":
+    main()

model/student.py

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+from datetime import date
+from typing import Optional, Union
+from dataclasses import dataclass
+from src.utils.id_card_utils import parse_id_card
+
+
+@dataclass
+class Student:
+    name: str
+    id_card: str
+    stu_id: str
+    gender: Optional[bool] = None  # True for male, False for female
+    height: Optional[int] = None  # cm
+    weight: Optional[float] = None  # kg
+    enrollment_date: Optional[Union[date, str]] = None
+    class_name: Optional[str] = None
+    major: Optional[str] = None
+
+    def __post_init__(self):
+        # 从身份证号解析生日和年龄
+        self.birthday = parse_id_card.get_birthday(self.id_card)
+        self.age = parse_id_card.get_age(self.id_card)
+
+        # 确保入学日期是date对象
+        if isinstance(self.enrollment_date, str):
+            try:
+                self.enrollment_date = date.fromisoformat(self.enrollment_date)
+            except ValueError:
+                raise ValueError("Invalid enrollment date format. Use YYYY-MM-DD")
+
+    def to_dict(self):
+        return {
+            "name": self.name,
+            "id_card": self.id_card,
+            "stu_id": self.stu_id,
+            "gender": self.gender,
+            "height": self.height,
+            "weight": self.weight,
+            "enrollment_date": self.enrollment_date.isoformat() if self.enrollment_date else None,
+            "class_name": self.class_name,
+            "major": self.major
+        }

model/student_service.py

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+from typing import List, Optional
+from src.dal.abstract_dal import IStudentDAL
+from src.models.student import Student
+from src.bll.validators import validate_student
+
+
+class StudentService:
+    def __init__(self, dal: IStudentDAL):
+        self.dal = dal
+
+    def add_student(self, student: Student) -> tuple[bool, str]:
+        """添加学生信息，返回是否成功和错误信息"""
+        is_valid, msg = validate_student(student)
+        if not is_valid:
+            return False, msg
+
+        if self.dal.get_by_id(student.id_card):
+            return False, "身份证号已存在"
+
+        if self.dal.get_by_stu_id(student.stu_id):
+            return False, "学号已存在"
+
+        if self.dal.add_student(student):
+            return True, "添加成功"
+        return False, "添加失败"
+
+    def delete_student(self, id_card: str) -> tuple[bool, str]:
+        """删除学生信息"""
+        if not self.dal.get_by_id(id_card):
+            return False, "学生不存在"
+
+        if self.dal.delete_student(id_card):
+            return True, "删除成功"
+        return False, "删除失败"
+
+    def update_student(self, student: Student) -> tuple[bool, str]:
+        """更新学生信息"""
+        is_valid, msg = validate_student(student)
+        if not is_valid:
+            return False, msg
+
+        existing = self.dal.get_by_id(student.id_card)
+        if not existing:
+            return False, "学生不存在"
+
+        # 检查学号是否被其他学生使用
+        stu_with_same_id = self.dal.get_by_stu_id(student.stu_id)
+        if stu_with_same_id and stu_with_same_id.id_card != student.id_card:
+            return False, "学号已被其他学生使用"
+
+        if self.dal.update_student(student):
+            return True, "更新成功"
+        return False, "更新失败"
+
+    # 其他业务方法...