98 lines
3.6 KiB
Python
98 lines
3.6 KiB
Python
import re,pymysql.cursors
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class Mysql():
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__conn__ = None
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__curr__ = None
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def __init__(self,**kwargs):
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if kwargs:
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self.connect(**kwargs)
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def connect(self, host=None, port=0, user=None, password='', database=None, charset='', cursor='Dict'):
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if self.__conn__:
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raise Exception('连接已存在 | Connection already exists.')
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match cursor:
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case 'Index':
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cursorClass = pymysql.cursors.Cursor
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case 'Dict':
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cursorClass = pymysql.cursors.DictCursor
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case _:
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cursorClass = pymysql.cursors.DictCursor
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self.__conn__ = pymysql.connect(
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host=host, port=port,
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user=user, password=password,
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database=database, charset=charset,
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autocommit=True,
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connect_timeout=10,
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cursorclass=cursorClass,
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client_flag=pymysql.constants.CLIENT.MULTI_STATEMENTS
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)
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self.__curr__ = self.__conn__.cursor()
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return self
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def execute(self,*args):
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if self.__curr__ == None:
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raise Exception('连接不存在 | Connection does not exist.')
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self.__curr__.execute(*args)
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return self
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def count(self):
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if self.__curr__ == None:
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raise Exception('连接不存在 | Connection does not exist.')
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return self.__curr__.rowcount
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def fetchall(self):
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if self.__curr__ == None:
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raise Exception('连接不存在 | Connection does not exist.')
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return self.__curr__.fetchall()
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def fetchone(self):
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if self.__curr__ == None:
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raise Exception('连接不存在 | Connection does not exist.')
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return self.__curr__.fetchone()
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def close(self):
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if self.__curr__ or self.__conn__:
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self.__curr__.close()
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self.__conn__.close()
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self.__curr__ = None
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self.__conn__ = None
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return True
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if __name__ == '__main__':
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# Example.
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connConfig = {
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"host": "127.0.0.1", "port": 3306, "user": "root", "password": "root", "database": "db", "charset": "utf8",
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}
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sqlConnect = Mysql(**connConfig,cursor='Dict')
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sqlConnect.execute('''
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CREATE TABLE `user` (
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`uid` int(11) NOT NULL AUTO_INCREMENT,
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`username` char(20) DEFAULT NULL,
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`email` varchar(64) DEFAULT NULL,
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`phone` char(11) DEFAULT NULL,
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`password` char(32) DEFAULT NULL,
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PRIMARY KEY (`uid`),
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UNIQUE KEY `username` (`username`),
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UNIQUE KEY `email` (`email`),
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UNIQUE KEY `phone` (`phone`)
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)
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ENGINE=MyISAM AUTO_INCREMENT=10000 DEFAULT CHARSET=utf8;
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''')
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print('RowCounts:', sqlConnect.count(), 'SqlResult:', sqlConnect.fetchall())
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sqlConnect.execute('''
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INSERT INTO user (username,email,phone,password) VALUES ("刘德华","10000@example.com","13512310000","0123456789abcdef0123456789abcdef");
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''')
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print('RowCounts:', sqlConnect.count(), 'SqlResult:', sqlConnect.fetchall())
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sqlConnect.execute('''
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INSERT INTO user (username,email,phone,password) VALUES ("周润发","10002@example.com","13512310002","0123456789abcdef0123456789abcdef");
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''')
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print('RowCounts:', sqlConnect.count(), 'SqlResult:', sqlConnect.fetchall())
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sqlConnect.execute('''
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SELECT * FROM user WHERE uid LIKE "1%";
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''')
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print('RowCounts:', sqlConnect.count(), 'SqlResult:', sqlConnect.fetchall())
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sqlConnect.execute('''
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DROP TABLE user;
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''')
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print('RowCounts:', sqlConnect.count(), 'SqlResult:', sqlConnect.fetchall())
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sqlConnect.close()
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