64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
import aiomysql
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class AsyncMySQL:
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def __init__(self, db_config: dict):
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self.db_config = db_config
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self.pool = None
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async def init_pool(self):
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"""初始化连接池"""
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if self.pool is None:
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self.pool = await aiomysql.create_pool(**self.db_config)
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async def close_pool(self):
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"""关闭连接池"""
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if self.pool:
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self.pool.close()
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await self.pool.wait_closed()
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self.pool = None
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async def fetch_one(self, sql: str, params=None):
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"""查询单条数据"""
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await self.init_pool()
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async with self.pool.acquire() as conn:
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async with conn.cursor(aiomysql.DictCursor) as cursor:
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await cursor.execute(sql, params or ())
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return await cursor.fetchone()
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async def fetch_all(self, sql: str, params=None):
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"""查询多条数据"""
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await self.init_pool()
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async with self.pool.acquire() as conn:
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async with conn.cursor(aiomysql.DictCursor) as cursor:
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await cursor.execute(sql, params or ())
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return await cursor.fetchall()
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async def execute(self, sql: str, params=None):
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"""执行单条 SQL（insert/update/delete）"""
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await self.init_pool()
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async with self.pool.acquire() as conn:
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async with conn.cursor() as cursor:
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await cursor.execute(sql, params or ())
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await conn.commit()
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return cursor.rowcount
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async def executemany(self, sql: str, params_list):
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"""批量执行 SQL"""
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await self.init_pool()
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async with self.pool.acquire() as conn:
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async with conn.cursor() as cursor:
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await cursor.executemany(sql, params_list)
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await conn.commit()
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return cursor.rowcount
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async def truncate_table(self, table_name: str):
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"""清空指定表的内容"""
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await self.init_pool()
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async with self.pool.acquire() as conn:
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async with conn.cursor() as cursor:
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sql = f"TRUNCATE TABLE `{table_name}`"
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await cursor.execute(sql)
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await conn.commit()
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return True
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