'utf-8' codec can't decode byte 0xff in position 0:

'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

原因：

图片压缩后是bytes，需要转成base64字符串，才可以进行转json获取读取。

  image = cv2.imread(r"1.jpg")img_encode = cv2.imencode('.jpg', image)[1]data_encode = np.array(img_encode)str_encode = data_encode.tostring()# a = base64.b64encode(str_encode)data = {"pic": str_encode}data_str=json.dumps(data,cls=MyEncoder)

文件是gb2312，把文件编码转为utf-8，不是用utf-8编码

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