mysql处理存储二进制图片
关键字：mysql；图片数据导入表参考url:http://xiaolin0199.iteye.com/blog/585519
[*]import MySQLdb
[*]
[*]class BlobDataTestor:
[*] def __init__ (self):
[*] self.conn = MySQLdb.connect(host='localhost',user='<your user>',passwd='<your pw>',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()
[*] 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()
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