更改文件导入路径

class_management/database.py

@@ -1,9 +1,22 @@
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker,declarative_base
 
-class_management_url = "mysql+pymysql://root:123456@localhost:3306/student_manage_system?charset=utf8mb4"
 
-engine = create_engine(class_management_rul)
+# 导入.env参数
+import os
+from dotenv import load_dotenv
+load_dotenv( )
+DB_USER = os.getenv("DB_USER", "root")
+DB_PASSWORD = os.getenv("DB_PASSWORD", "")
+DB_HOST = os.getenv("DB_HOST", "localhost")
+DB_PORT = os.getenv("DB_PORT", "3306")
+DB_NAME = os.getenv("DB_NAME", "student_manage_system")
+
+class_management_url = f"mysql+pymysql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}?charset=utf8mb4"
+
+# class_management_url = "mysql+pymysql://root:123456@localhost:3306/student_manage_system?charset=utf8mb4"
+
+engine = create_engine(class_management_url)
 SessionLocal = sessionmaker(bind=engine,autocommit=False, autoflush=False)
 Base = declarative_base()