123

dal/student_dal_json.py

@@ -1,7 +1,8 @@
 import json
-import os, sys
+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__))
@@ -10,6 +11,107 @@ 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
@@ -109,10 +211,17 @@ class StudentDAL:
             json.dump(student_dicts, file, ensure_ascii=False, indent=4)
 
     def import_from_json(self, file_path):
-        with open(file_path, mode='r', encoding='utf-8') as file:
+        try:
-            student_dicts = json.load(file)
+            with open(file_path, mode='r', encoding='utf-8') as file:
-            students = [Student.from_dict(student_dict) for student_dict in student_dicts]
+                student_dicts = json.load(file)
-            self.save_students(students)
+                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()
@@ -124,15 +233,20 @@ class StudentDAL:
                 writer.writerow(student.to_dict())
 
     def import_from_csv(self, file_path):
-        students = []
+        try:
-        with open(file_path, mode='r', encoding='utf-8') as file:
+            students = []
-            reader = csv.DictReader(file)
+            with open(file_path, mode='r', encoding='utf-8') as file:
-            for row in reader:
+                reader = csv.DictReader(file)
-                row['birth_date'] = date.fromisoformat(row['birth_date'])
+                for row in reader:
-                row['enrollment_date'] = date.fromisoformat(row['enrollment_date'])
+                    row['birth_date'] = date.fromisoformat(row['birth_date'])
-                student = Student.from_dict(row)
+                    row['enrollment_date'] = date.fromisoformat(row['enrollment_date'])
-                students.append(student)
+                    student = Student.from_dict(row)
-        self.save_students(students)
+                    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()
@@ -152,4 +266,24 @@ class StudentDAL:
     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])
+        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}")

data/student.json

@@ -1 +1,10 @@
-[]
+[
+    {
+        "sid": "110309230907041",
+        "name": "cgt",
+        "height": 180,
+        "birth_date": "2023-09-01",
+        "enrollment_date": "2023-09-01",
+        "class_name": "cls2"
+    }
+]

main.py

@@ -126,4 +126,3 @@ def main():
 
 if __name__ == '__main__':
     main()
-    print(123)

model/Student.py

@@ -18,8 +18,8 @@ class Student:
             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):
+        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")
+            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:

ui/studentui.py

@@ -1,8 +1,9 @@
-import os
+import os,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):
@@ -87,7 +88,18 @@ class StudentUI:
 
         name = self.get_input("请输入姓名: ")
         id_number = self.get_input("请输入身份证号: ")
-        student_id = self.get_input("请输入学号: ")
+                # 验证学号格式（新增）
+        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8-12位数字
+                break
+            print("学号格式不正确，请输入8-12位数字")
+
         gender = self.get_input("请输入性别(男/女): ")
 
         while True:
@@ -108,37 +120,34 @@ class StudentUI:
             except ValueError:
                 print("体重必须为0到500之间的有效数值，请重新输入")
 
-        enrollment_date = self.get_input("请输入入学日期(YYYY-MM-DD): ")
+        # 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:
+                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: ")
 
-        student = Student(
+        # 创建 Student 对象
-            name=name,
-            id_number=id_number,
-            student_id=student_id,
-            gender=gender,
-            height=height,
-            weight=weight,
-            enrollment_date=enrollment_date,
-            class_name=class_name,
-
-            major=major
-        )
-        student = Student(
-            sid=student_id,  # 注意这里添加了 sid
-            name=name,
-            height=height,
-            birth_date=date.fromisoformat(enrollment_date),  # 假设入学日期作为示例，可根据实际情况修改
-            enrollment_date=date.fromisoformat(enrollment_date),
-            class_name=class_name
-        )
         try:
+            student = Student(
+                sid=student_id,
+                name=name,
+                height=height,
+                birth_date=date_obj,  # 使用验证后的日期对象
+                enrollment_date=date_obj,  # 使用验证后的日期对象
+                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(e)
+            print(f"添加学生失败: {e}")
 
     def handle_import_export(self, choice):
         if choice == '1':