前端上传图片base64，后台保存图片

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# 前端上传的base64,存放在django的媒体文件库中 if avatar_url:     b64_data = avatar_url.split(';base64,')[1]     data = base64.b64decode(b64_data)     image_url = os.path.join(MEDIA_ROOT_OLD, 'common/head_img/%s.jpg' % int(time.time()))     with open(image_url, 'wb') as f:         f.write(data) 　　　   # 截取media路径，存放在字段中         image_url = image_url.split("project_name")[1].replace('\\', '/')[1:]         # user对象         user.avatar_url = image_url