python mysql MySQLdb 存储文件

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再者，在这里我们是想讲一种方法，python+ mysql存储二进制流的方式

这里用的是Mysqldb，python里面最常用的数据库模块

import MySQLdb   class BlobDataTestor:       def __init__ (self):           self.conn = MySQLdb.connect(host='localhost',user='',passwd='',db='0')       def __del__ (self):           try:               self.conn.close()           except :               pass        def closedb(self):           self.conn.close()       def setup(self):           cursor = self.conn.cursor()           cursor.execute( """              CREATE TABLE IF NOT EXISTS `Dem_Picture` (              `ID` int(11) NOT NULL auto_increment,              `PicData` mediumblob,              PRIMARY KEY (`ID`)              ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;              """)       def teardown(self):           cursor = self.conn.cursor()           try:               cursor.execute( "Drop Table Dem_Picture" )           except:               pass            # self.conn.commit()        def testRWBlobData(self):        # 读取源图片数据                          f = open( "C:\\11.jpg" , "rb" )           b = f.read()           f.close()       # 将图片数据写入表            cursor = self.conn.cursor()           cursor.execute( "INSERT INTO Dem_Picture (PicData) VALUES (%s)" , (MySQLdb.Binary(b)))       # self.conn.commit()        # 读取表内图片数据，并写入硬盘文件            cursor.execute( "SELECT PicData FROM Dem_Picture ORDER BY ID DESC limit 1" )           d = cursor.fetchone()[0]           cursor.close()           f = open( "C:\\22.jpg" , "wb" )           f.write(d)           f.close()   if __name__ == "__main__":       test = BlobDataTestor()       try:           test.setup()           test.testRWBlobData()           test.teardown()       finally:           test.closedb()

到这里python mysql存储二进制图片的方法就将完了

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