Python 蟒蛇3+；jQuery文件上载直接上载s3 |方法不允许405

我正在使用Python3+Flask将视频文件直接上传到S3存储器，但我得到了

方法不允许405

此外，上传必须工作客户端，因为视频文件没有大小限制，将是巨大的。这将导致服务器超时

以下是我的CORS和桶政策：

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <AllowedMethod>POST</AllowedMethod>
    <AllowedMethod>PUT</AllowedMethod>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AddPerm",
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::mybucket/*"
        }
    ]
}

在服务器端，我使用它来签署请求：

# Sign request for direct file upload through client for video
@app.route('/sign_s3/<path:file_name_data>/<path:file_type_data>/<up_type>', methods=["GET", "POST"])
@login_required
@check_confirmed
def sign_s3(file_name_data, file_type_data, up_type):
    if "localhost" in request.url_root:
        if up_type == "profile_vid":
            file_name = str(current_user.id) + get_random_code(5) + "local-profil-video." + file_name_data.split(".")[-1]
        else:
            file_name = str(current_user.id) + str(randint(1,100)) + "local-post-video-temp." + file_name_data.split(".")[-1]
    else:
        if up_type == "profile_vid":
            file_name = str(current_user.id) + get_random_code(5) + "-profil-video." + file_name_data.split(".")[-1]
        else:
            file_name = str(current_user.id) + str(randint(1,100)) + "-post-video-temp." + file_name_data.split(".")[-1]

    file_type = file_type_data

    session = boto3.Session(
        aws_access_key_id=app.config['MY_AWS_ID'],
        aws_secret_access_key=app.config['MY_AWS_SECRET'],
        region_name='eu-central-1'
    )

    presigned_post = s3.generate_presigned_post(
    Bucket = 'mybucket',
    Key = 'videos/' + file_name,
    Fields = {"acl": "public-read", "Content-Type": file_type},
    Conditions = [
      {"acl": "public-read"},
      {"Content-Type": file_type}
    ],
    ExpiresIn = 3600
    )

    if up_type == "profile_vid":
        if current_user.profile_video != None:
            delete_file_from_aws("videos/", current_user.profile_video)
        setattr(current_user, "profile_video", file_name)
    else:
        print ('post video has been uploaded, no need to delete or set here')

    db_session.commit()

    return json.dumps({'data': presigned_post, 'url': 'https://s3.eu-central-1.amazonaws.com/mybucket/' + 'videos/' + file_name, 'created_file_name' : file_name})

响应标题：

Access-Control-Allow-Methods: GET, POST, PUT
Access-Control-Allow-Origin: *
Allow: HEAD, DELETE, GET, PUT
Connection: close
Content-Type: application/xml
Date: Wed, 23 May 2018 15:18:49 GMT
Server: AmazonS3
Transfer-Encoding: chunked
Vary: Origin, Access-Control-Request-Headers, Access-Control-Request-Method
x-amz-id-2: SOME DATA
x-amz-request-id: MY ID

请求标头：

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7
Cache-Control: max-age=0
Connection: keep-alive
Content-Length: 1057282
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary5gUAipNLOHxSqN8F
Host: s3.eu-central-1.amazonaws.com
Origin: http://localhost:5000
Referer: http://localhost:5000/profile
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

---

你看过报纸了吗？我不确定您配置的会话对象是如何工作的，但我发现使用S3资源和

upload\u fileobj

上传到S3 bucket更容易。您可以从发布的文件中分块写入视频数据，而无需将其临时写入服务器，但这不是客户端上载？巨大的文件将导致服务器超时，还是我错了@斯卡米看到了。你能更新你的问题，包括你想要客户端上传吗？从你的帖子上看不太清楚。谢谢你的提示。

Request URL: https://s3.eu-central-1.amazonaws.com/mybucket/videos/3rBHwNlocal-profil-video.mp4
Request Method: POST
Status Code: 405 Method Not Allowed
Remote Address: 52.219.74.48:443
Referrer Policy: no-referrer-when-downgrade

Access-Control-Allow-Methods: GET, POST, PUT
Access-Control-Allow-Origin: *
Allow: HEAD, DELETE, GET, PUT
Connection: close
Content-Type: application/xml
Date: Wed, 23 May 2018 15:18:49 GMT
Server: AmazonS3
Transfer-Encoding: chunked
Vary: Origin, Access-Control-Request-Headers, Access-Control-Request-Method
x-amz-id-2: SOME DATA
x-amz-request-id: MY ID

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7
Cache-Control: max-age=0
Connection: keep-alive
Content-Length: 1057282
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary5gUAipNLOHxSqN8F
Host: s3.eu-central-1.amazonaws.com
Origin: http://localhost:5000
Referer: http://localhost:5000/profile
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36