bython bytearray怎么存文件？

Posted 2023-04-18

比方说有一个bytearray A, A里存储的是一张png的图片信息，但是由于bytearray存的是ASCII码，请问怎么把A转换成字节流存到文件中？

参考技术A import cv2

img = cv2.imread("test.jpg",cv2.IMREAD_GRAYSCALE)
#等效于 img = cv2.imread("test.jpg",0)
print(img.shape)
#显示转换为标准一维python bytearray
bytearray1 = bytearray(img)

用PHP将ByteArray保存到文件

A short snippet of code to save a ByteArray into any file

//-- your byte array you want to save
var bytes: ByteArray = new ByteArray();
 
//-- set up correct url request using post in binary mode
var request:URLRequest = new URLRequest ( 'http://pathto/save.php' );
var loader: URLLoader = new URLLoader();
request.contentType = 'application/octet-stream';
request.method = URLRequestMethod.POST;
request.data = bytes;
loader.load( request );
 
And of course you need a PHP file like this:
 
$fp = fopen( 'file.txt', 'wb' );
fwrite( $fp, $GLOBALS[ 'HTTP_RAW_POST_DATA' ] );
fclose( $fp );