diff --git a/core/config.py b/core/config.py
index e69de29..437375f 100644
--- a/core/config.py
+++ b/core/config.py
@@ -0,0 +1,6 @@
+"mysql+pymysql://root:123456@localhost/fastapi_db?charset=utf8mb4"
+
+database_connect_user = 'root'
+database_connect_password = '123456'
+database_connect_ip = 'localhost'
+database_connect_database_name = 'student_manager'
\ No newline at end of file
diff --git a/core/database.py b/core/database.py
index e69de29..874c6ef 100644
--- a/core/database.py
+++ b/core/database.py
@@ -0,0 +1,33 @@
+'''
+1.此文件已经配置 engine 和 SessionLocal .
+由于还没合库，需要自己去 /core/database 配置库名。默认为 student_manager
+具体配置如下
+用户:root
+密码：123456
+IP:localhost
+库名：student_manager
+
+2.如果还没开始建库，建库时统一将名称命名为 student_manager。
+  如果已经建库或在 models 目录写好Base函数，那先别提交分支，不然合并的时候会出问题，后天合库的时候再说。
+'''
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from .config import (
+    database_connect_user,
+    database_connect_password,
+    database_connect_ip,
+    database_connect_database_name,
+)
+engine = create_engine(             #engine负责连接mysql
+    f"mysql+pymysql://{database_connect_user}:{database_connect_password}@{database_connect_ip}/{database_connect_database_name}?charset=utf8mb4",
+    pool_size=50
+)
+SessionLocal = sessionmaker(bind=engine, autoflush=False,autocommit=False)
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
diff --git a/main.py b/main.py
index 235d211..fe32962 100644
--- a/main.py
+++ b/main.py
@@ -1,15 +1,24 @@
 from fastapi import FastAPI
 from api.example import example_router
+from middleware import log_middleware
 import uvicorn
 app = FastAPI()
+app.middleware("http")(log_middleware)
+
+#-------------朱婷婷--------------
+
+#-------------李玉杰--------------
+
+#-------------张义---------------
+
+#-------------薄鑫---------------
 
 #-------------张昕浩---------------
 app.include_router(example_router)
 
+#-------------曾凯---------------
 
-
-
-
+#-------------南方宇---------------
 
 #-----------主程序----------------
 
diff --git a/middleware.py b/middleware.py
index e69de29..164a3f2 100644
--- a/middleware.py
+++ b/middleware.py
@@ -0,0 +1,9 @@
+import time
+
+async def log_middleware(request, call_next):
+    start_time = time.time()
+    response = await call_next(request)
+    end_time = time.time()
+    cost = end_time - start_time
+    print(f'{request.method}  {request.url.path} cost={cost}')
+    return response
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index e69de29..0b1a59e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1,5 @@
+fastapi==0.128.0
+uvicorn==0.40.0
+SQLAlchemy==2.0.49
+PyMySQL==1.1.2
+pydantic==2.13.3
diff --git a/schemas/common.py b/schemas/common.py
new file mode 100644
index 0000000..423ea2d
--- /dev/null
+++ b/schemas/common.py
@@ -0,0 +1,10 @@
+'''
+两种情况：
+    1.响应成功，响应体设置为SuccessResponse。
+    2.响应失败，需要主动调用HTTPExpection报错，不然会产生响应码200，响应失败的问题。
+'''
+from pydantic import BaseModel,Field
+from typing import Any
+class SuccessResponse(BaseModel):
+    status_code:int=Field(default=200, ge= 200, lt = 300)
+    msg: Any=Field(default='OK')