状态”：500，“ body”：“ HTTP错误400：无效的URI：isHexDigit”，同时使用skimage将s3上的图像下载到本地时

Question

我的任务是每次使用随机网址将文件上传到s3存储桶（公共）。为此，我使用以下代码生成网址

image_path = FOLDER+'/'+str(random.randint(0, 1000000))  + str(random.randint(0, 1000000))  + str(random.randint(0, 1000000)) + '%' + str(today.day) + '-' + str(today.month) + '-' + str(today.year)+'.'+extension

s3.put_object(
        Bucket=BUCKET,
        Key = image_path,
        Body = buffer,
        ContentType = 'image/'+extension,
        ACL = 'public-read'

    )
object_url = "https://s3-{0}.amazonaws.com/{1}/{2}".format(
        REGION,
        BUCKET,
        image_path)
 from skimage import io
 image = io.imread(object_url)

上传没有显示错误。虽然现在当我尝试使用浏览器访问该URL时，它显示为HTTP400。当我尝试使用skimage下载该URL时，它显示了状态]：500，“正文”：“ HTTP错误400：无效的URI：isHexDigit”此处：extension：image_extension，today：日期对象，BUCKET：s3存储桶，buffer：图像对象，REGION：s3存储桶位置网址示例如下：https://s3-REGION.amazonaws.com/BUCKET/FOLDER/932724r8477P9577%4-4-2020.jpeg

Answer 1

您生成的URL无效。百分比字符保留用于percent encoding。

一个精简的示例将重现您的错误：

import urllib

REGION = 'us-east-1'
BUCKET = 'BUCKET'
image_path = 'FOLDER/932724r8477P9577%4-4-2020.jpeg'

object_url = "https://s3.{0}.amazonaws.com/{1}/{2}".format(
        REGION,
        BUCKET,
        image_path)

f = urllib.request.urlopen(object_url)

以上将失败：

urllib.error.HTTPError: HTTP Error 400: Invalid URI: isHexDigit

您需要像这样进行百分比编码：

import urllib

REGION = 'us-east-1'
BUCKET = 'BUCKET'
image_path = 'FOLDER/932724r8477P9577%4-4-2020.jpeg'

object_url = "https://s3.{0}.amazonaws.com/{1}/{2}".format(
        REGION,
        BUCKET,
        urllib.parse.quote(image_path))

f = urllib.request.urlopen(object_url)