commit
c4473a3eeb
@ -0,0 +1,3 @@
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# 默认忽略的文件
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/shelf/
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/workspace.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<module type="PYTHON_MODULE" version="4">
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<component name="NewModuleRootManager">
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<content url="file://$MODULE_DIR$" />
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<orderEntry type="jdk" jdkName="Python 3.11" jdkType="Python SDK" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>
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<component name="InspectionProjectProfileManager">
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<settings>
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<option name="USE_PROJECT_PROFILE" value="false" />
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<version value="1.0" />
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</settings>
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</component>
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="Black">
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<option name="sdkName" value="Python 3.11" />
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</component>
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</project>
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@ -0,0 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="ProjectModuleManager">
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<modules>
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<module fileurl="file://$PROJECT_DIR$/.idea/PythonProject.iml" filepath="$PROJECT_DIR$/.idea/PythonProject.iml" />
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</modules>
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</component>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="VcsDirectoryMappings">
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<mapping directory="$PROJECT_DIR$" vcs="Git" />
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</component>
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</project>
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from datetime import date
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from typing import Optional, List
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from dal.student_dal_json import StudentDAL
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from model import Student
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class StudentBLL:
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def __init__(self, dal: StudentDAL):
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self.dal = dal
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def add_student(self, student: Student) -> bool:
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if self.dal.check_student_exists(student.sid):
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raise ValueError(f"学生 ID {student.sid} 已存在。")
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if not student.is_valid:
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raise ValueError(f"学生数据校验不通过。错误信息：{student.get_errors()}")
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return self.dal.add_student(student)
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# 其他方法同理
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def delete_student(self, sid: str) ->bool:
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if not self.dal.check_student_exists(sid):
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raise ValueError(f"学生 ID {sid} 不存在。")
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return self.dal.delete_student(sid)
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def update_student(self, sid: str, student: Student) -> bool:
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if not self.dal.check_student_exists(sid):
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raise ValueError(f"学生 ID {sid} 不存在。")
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if not student.is_valid:
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raise ValueError(f"学生数据校验不通过。错误信息：{student.get_errors()}")
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return self.dal.update_student(sid, student)
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def update_student_partial(self, sid: str, name: Optional[str] = None, height: Optional[int] = None,
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birth_date: Optional[date] = None, enrollment_date: Optional[date] = None,
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class_name: Optional[str] = None) -> bool:
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if not self.dal.check_student_exists(sid):
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raise ValueError(f"学生 ID {sid} 不存在。")
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return self.dal.update_student_partial(sid, name, height, birth_date, enrollment_date, class_name)
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def get_student_by_id(self, sid: str) -> Optional[Student]:
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return self.dal.find_student_by_sid(sid)
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def get_students_by_name(self, name: str) -> List[Student]:
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return self.dal.find_students_by_name(name)
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def get_students_by_class(self, class_name: str) -> List[Student]:
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return self.dal.find_students_by_class_name(class_name)
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def get_all_students(self) -> List[Student]:
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return self.dal.get_all_students()
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import json
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from model.Student import Student
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import json
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import os, sys
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from datetime import date
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from typing import List, Optional
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import csv
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current_dir = os.path.dirname(os.path.abspath(__file__))
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parent_dir = os.path.dirname(current_dir)
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sys.path.append(parent_dir)
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from model.Student import Student
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class StudentDAL:
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def __init__(self, file_path: str):
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self.file_path = file_path
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self._ensure_file_exists()
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def _ensure_file_exists(self):
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if not os.path.exists(self.file_path):
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with open(self.file_path, mode='w', encoding='utf-8') as file:
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json.dump([], file)
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def save_students(self, students: List[Student]) -> None:
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student_dicts = [student.to_dict() for student in students]
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with open(self.file_path, mode='w', encoding='utf-8') as file:
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json.dump(student_dicts, file, ensure_ascii=False, indent=4)
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def load_students(self) -> List[Student]:
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with open(self.file_path, mode='r', encoding='utf-8') as file:
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student_dicts = json.load(file)
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return [Student.from_dict(student_dict) for student_dict in student_dicts]
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def add_student(self, student: Student) -> bool:
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students = self.load_students()
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for existing_student in students:
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if existing_student.sid == student.sid:
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return False
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students.append(student)
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self.save_students(students)
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return True
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def find_student_by_sid(self, sid: str) -> Optional[Student]:
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students = self.load_students()
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for student in students:
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if student.sid == sid:
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return student
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return None
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def find_students_by_name(self, name: str) ->List[Student]:
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students = self.load_students()
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return [student for student in students if name.lower() in student.name.lower()]
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def find_students_by_class_name(self, class_name: str) ->List[Student]:
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students = self.load_students()
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return [s for s in students if class_name.lower() in s.class_name.lower()]
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def get_all_students(self) -> List[Student]:
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return self.load_students()
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def update_student(self, sid: str, updated_student: Student) -> bool:
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students = self.load_students()
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for i, student in enumerate(students):
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if student.sid == sid:
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students[i] = updated_student
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self.save_students(students)
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return True
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return False
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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:
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students = self.load_students()
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for i, student in enumerate(students):
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if student.sid == sid:
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if name is not None:
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students[i].name = name
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if height is not None:
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students[i].height = height
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if birth_date is not None:
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students[i].birth_date = birth_date
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if enrollment_date is not None:
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students[i].enrollment_date = enrollment_date
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if class_name is not None:
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students[i].class_name = class_name
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self.save_students(students)
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return True
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return False
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def delete_student(self, sid: str) -> bool:
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"""根据学生 ID 删除学生"""
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students = self.load_students()
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initial_length = len(students)
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students = [student for student in students if student.sid != sid]
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if len(students) < initial_length:
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self.save_students(students)
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return True
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return False
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def clear_all_students(self) -> None:
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self.save_students([])
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def get_student_count(self) -> int:
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return len(self.load_students())
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def check_student_exists(self, sid: str) ->bool:
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return self.find_student_by_sid(sid) is not None
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def export_to_json(self, file_path):
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students = self.load_students()
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student_dicts = [student.to_dict() for student in students]
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with open(file_path, mode='w', encoding='utf-8') as file:
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json.dump(student_dicts, file, ensure_ascii=False, indent=4)
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def import_from_json(self, file_path):
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with open(file_path, mode='r', encoding='utf-8') as file:
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student_dicts = json.load(file)
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students = [Student.from_dict(student_dict) for student_dict in student_dicts]
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self.save_students(students)
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def export_to_csv(self, file_path):
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students = self.load_students()
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with open(file_path, mode='w', encoding='utf-8', newline='') as file:
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fieldnames = ['sid', 'name', 'height', 'birth_date', 'enrollment_date', 'class_name']
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writer = csv.DictWriter(file, fieldnames=fieldnames)
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writer.writeheader()
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for student in students:
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writer.writerow(student.to_dict())
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def import_from_csv(self, file_path):
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students = []
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with open(file_path, mode='r', encoding='utf-8') as file:
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reader = csv.DictReader(file)
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for row in reader:
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row['birth_date'] = date.fromisoformat(row['birth_date'])
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row['enrollment_date'] = date.fromisoformat(row['enrollment_date'])
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student = Student.from_dict(row)
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students.append(student)
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self.save_students(students)
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def get_average_height(self):
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students = self.load_students()
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if not students:
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return 0
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total_height = sum(student.height for student in students)
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return total_height / len(students)
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def count_students_by_height_range(self, min_height, max_height):
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students = self.load_students()
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return len([student for student in students if min_height <= student.height <= max_height])
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def count_students_by_enrollment_year(self, year):
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students = self.load_students()
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return len([student for student in students if student.enrollment_date.year == year])
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def count_students_by_age_range(self, min_age, max_age):
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today = date.today()
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students = self.load_students()
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return len([student for student in students if min_age <= today.year - student.birth_date.year <= max_age])
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@ -0,0 +1 @@
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[]
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@ -0,0 +1,128 @@
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from datetime import date
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from ui.studentui import StudentUI
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def main():
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ui = StudentUI()
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while True:
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ui.display_menu()
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choice = ui.get_input("请输入你的选择: ")
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if choice == '1':
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ui.add_student()
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elif choice == '2':
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sid = ui.get_input("请输入要删除的学生学号: ")
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try:
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if ui.bll.delete_student(sid):
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print("学生信息删除成功！")
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else:
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print("学生信息删除失败。")
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except ValueError as e:
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print(e)
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elif choice == '3':
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sid = ui.get_input("请输入要更新的学生学号: ")
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student = ui.bll.get_student_by_id(sid)
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if student:
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# 获取更新信息
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name = ui.get_input(f"请输入新的姓名（当前：{student.name}），不修改请直接回车: ")
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height = ui.get_input(f"请输入新的身高（当前：{student.height}），不修改请直接回车: ")
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birth_date = ui.get_input(f"请输入新的出生日期（当前：{student.birth_date}），不修改请直接回车: ")
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enrollment_date = ui.get_input(f"请输入新的入学日期（当前：{student.enrollment_date}），不修改请直接回车: ")
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class_name = ui.get_input(f"请输入新的班级（当前：{student.class_name}），不修改请直接回车: ")
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if name:
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student.name = name
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if height:
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student.height = int(height)
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if birth_date:
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student.birth_date = date.fromisoformat(birth_date)
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if enrollment_date:
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student.enrollment_date = date.fromisoformat(enrollment_date)
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if class_name:
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student.class_name = class_name
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try:
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if ui.bll.update_student(sid, student):
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print("学生信息更新成功！")
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||||
else:
|
||||
print("学生信息更新失败。")
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||||
except ValueError as e:
|
||||
print(e)
|
||||
else:
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||||
print(f"学生 ID {sid} 不存在。")
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||||
elif choice == '4':
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||||
ui.display_query_menu()
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||||
query_choice = ui.get_input("请输入你的查询选择: ")
|
||||
if query_choice == '1':
|
||||
students = ui.bll.get_all_students()
|
||||
for student in students:
|
||||
print(student)
|
||||
elif query_choice == '2':
|
||||
sid = ui.get_input("请输入要查询的学生学号: ")
|
||||
student = ui.bll.get_student_by_id(sid)
|
||||
if student:
|
||||
print(student)
|
||||
else:
|
||||
print(f"学生 ID {sid} 不存在。")
|
||||
elif query_choice == '3':
|
||||
# 这里和按学号查询逻辑一样
|
||||
sid = ui.get_input("请输入要查询的学生学号: ")
|
||||
student = ui.bll.get_student_by_id(sid)
|
||||
if student:
|
||||
print(student)
|
||||
else:
|
||||
print(f"学生 ID {sid} 不存在。")
|
||||
elif query_choice == '4':
|
||||
name = ui.get_input("请输入要查询的学生姓名: ")
|
||||
students = ui.bll.get_students_by_name(name)
|
||||
for student in students:
|
||||
print(student)
|
||||
elif query_choice == '5':
|
||||
class_name = ui.get_input("请输入要查询的班级: ")
|
||||
students = ui.bll.get_students_by_class(class_name)
|
||||
for student in students:
|
||||
print(student)
|
||||
elif query_choice == '0':
|
||||
continue
|
||||
elif choice == '5':
|
||||
ui.display_stats_menu()
|
||||
stats_choice = ui.get_input("请输入你的统计选择: ")
|
||||
if stats_choice == '1':
|
||||
count = ui.bll.dal.get_student_count()
|
||||
print(f"学生总数为: {count}")
|
||||
elif stats_choice == '2':
|
||||
average_height = ui.bll.dal.get_average_height()
|
||||
print(f"学生平均身高为: {average_height:.2f} cm")
|
||||
elif stats_choice == '3':
|
||||
min_height = int(ui.get_input("请输入最小身高: "))
|
||||
max_height = int(ui.get_input("请输入最大身高: "))
|
||||
count = ui.bll.dal.count_students_by_height_range(min_height, max_height)
|
||||
print(f"身高在 {min_height} - {max_height} cm 之间的学生数量为: {count}")
|
||||
elif stats_choice == '4':
|
||||
year = int(ui.get_input("请输入入学年份: "))
|
||||
count = ui.bll.dal.count_students_by_enrollment_year(year)
|
||||
print(f"{year} 年入学的学生数量为: {count}")
|
||||
elif stats_choice == '5':
|
||||
min_age = int(ui.get_input("请输入最小年龄: "))
|
||||
max_age = int(ui.get_input("请输入最大年龄: "))
|
||||
count = ui.bll.dal.count_students_by_age_range(min_age, max_age)
|
||||
print(f"年龄在 {min_age} - {max_age} 岁之间的学生数量为: {count}")
|
||||
elif stats_choice == '0':
|
||||
continue
|
||||
elif choice == '6':
|
||||
ui.display_import_export_menu()
|
||||
import_export_choice = ui.get_input("请输入你的导入导出选择: ")
|
||||
if import_export_choice != '0':
|
||||
ui.handle_import_export(import_export_choice)
|
||||
else:
|
||||
continue
|
||||
elif choice == '7':
|
||||
try:
|
||||
ui.bll.dal.clear_all_students()
|
||||
print("所有学生信息已清空！")
|
||||
except Exception as e:
|
||||
print(f"清空学生信息失败: {e}")
|
||||
elif choice == '0':
|
||||
break
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
@ -0,0 +1,86 @@
|
||||
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):
|
||||
self._validation_errors.append("姓名长度需在2-20个字符之间")
|
||||
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")"
|
||||
)
|
||||
|
||||
|
||||
Loading…
Reference in new issue