35 lines
871 B
Python
35 lines
871 B
Python
from sqlalchemy import *
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from sqlalchemy.orm import declarative_base,sessionmaker
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# 导入.env参数
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import os
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from dotenv import load_dotenv
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load_dotenv( )
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DB_USER = os.getenv("DB_USER", "root")
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DB_PASSWORD = os.getenv("DB_PASSWORD", "")
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DB_HOST = os.getenv("DB_HOST", "localhost")
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DB_PORT = os.getenv("DB_PORT", "3306")
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DB_NAME = os.getenv("DB_NAME", "student_manage_system")
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db_url = f"mysql+pymysql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}?charset=utf8mb4"
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engine = create_engine(db_url
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, pool_size=50
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, echo=True
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)
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Base = declarative_base()
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Session = sessionmaker(bind=engine
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,autoflush=False
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,autocommit = False
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)
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def get_db():
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db = Session()
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try:
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yield db
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finally:
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db.close()
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