更新所有模块框架，建表已写好，学生查询模块已经写好，正在写新增模块。

students/schema/students_request.py

@@ -0,0 +1,39 @@
+# students_schema：请求、响应的模型框架
+
+from pydantic import BaseModel
+from datetime import datetime
+
+# 查询
+class StudentsQuery(BaseModel):
+    sid:int | None = None
+    student_name:str | None = None
+    student_phone: str | None = None
+    class_name:str | None = None
+    job_open_time:datetime | None = None
+    offer_issue_time:datetime | None = None
+    company_name:str | None = None
+    salary:int | None = None
+
+# 新建
+class StudentsResponse(BaseModel):
+    student_name:str
+    class_name:str
+    student_phone:str
+    job_open_time:datetime | None = None
+    offer_issue_time:datetime | None = None
+    company_name:str | None = None
+    salary:int | None = None
+
+# 更新
+class StudentsUpdate(BaseModel):
+    student_name:str | None = None
+    class_name:str | None = None
+    student_phone: str | None = None
+    job_open_time:datetime | None = None
+    offer_issue_time:datetime | None = None
+    company_name:str | None = None
+    salary:int | None = None
+
+# 删除
+class StudentsDelete(BaseModel):
+    sid:int