123

面向对象学生系统/bll/import_students.py

@@ -0,0 +1,15 @@
+def import_students(self,file_path:str)-> bool:
+    try:
+        with open(file_path,'r',encoding='utf-8') as f:
+            student_dicts =json.load(f)
+        students=[Student.from_dict(student_dict) for student_dict in student_dicts]
+        for student in students:
+            if not student.is_valid:
+                print(f"导入学生数据时校验不通过，学生ID：{student.sid},错误信息：{student.get_errors()}")
+                continue
+            if not self.dal.check_student_exists(student.sid):
+                self.dal.add_student(student)
+        return True
+    except Exception as e:
+        print(f"从JSON导入学生数据时出错：{e}")
+        return False

面向对象学生系统/bll/update_student.py

@@ -0,0 +1,6 @@
+def update_student(self,sid:str,student:Student)-> bool:
+    if not self.dal.check_student_exists(sid):
+        raise ValueError(f"学生ID{sid}不存在")
+    if not student.is_valid:
+        raise ValueError(f"学生数据校验不通过，错误信息：{student.get_errors()}")
+    return self.dal.update_student(sid,student)