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import pymysql
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def query_database():
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config = {
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'host': 'localhost',
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'port': 3306,
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'user': 'root',
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'password': '123321',
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'db': 'gushici',
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'charset': 'utf8mb4',
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}
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try:
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# 创建连接
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connection = pymysql.connect(**config)
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print("数据库连接成功")
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# 创建游标,用于执行SQL命令
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with connection.cursor() as cursor:
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# 执行一个查询示例
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cursor.execute("SELECT * FROM shici LIMIT 5")
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# 获取查询结果
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result = cursor.fetchall()
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for row in result:
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print(row)
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# 自动提交事务,对于只读操作这不是必需的,但确保任何更改会生效
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connection.commit()
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except pymysql.MySQLError as e:
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print(f"数据库查询过程中发生错误: {e}")
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finally:
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# 连接关闭已经在with语句中自动完成,这里不需要额外判断
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pass
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