【发布时间】:2020-03-14 12:50:36
【问题描述】:
使用签名的 url 从本地主机将图像文件上传到谷歌云时出现 CORS 错误,如何避免?
生成signedUrl的代码:
function get_v4_signed_url($bucket, $keyname, $contentType){
$bucket = $this->storageClient->bucket($bucket);
$object = $bucket->object($keyname);
$url = $object->signedUrl(
# This URL is valid for 15 minutes
new \DateTime('120 min'),
[
'method' => 'PUT',
'contentType' => $contentType,
'version' => 'v4',
"Access-Control-Allow-Origin" => "*"
]
);
return $url;
}
来自存储桶的CORS:
gsutil cors get gs://bucket-name
[{"maxAgeSeconds": 3600, "method": ["GET", "POST", "PUT", "DELETE", "OPTIONS"], "origin": ["https://localhost:8443"], "responseHeader": ["goog-resumable", "Content-Type", "Authorization", "Content-Length", "User-Agent", "x-goog-resumable"]}]
Javascript 代码:
uploadFileToGcp(file, url) {
var xhr = new XMLHttpRequest();
xhr.open('PUT', url);
xhr.setRequestHeader('Content-Type', file.type);
xhr.setRequestHeader("Access-Control-Allow-Origin","*");
xhr.onload = function () {
var res = JSON.parse(xhr.responseText);
console.log("res: "+res);
if (xhr.status == "200") {
hideLoadingDiv()
console.table(res);
} else {
console.error(res);
}
}
xhr.send(file);
}
来自谷歌云的回应:
Access to XMLHttpRequest at 'signed_URL' from origin 'https://localhost:8443' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
【问题讨论】:
-
你是如何生成签名网址的?
-
您是否在存储桶上设置了 CORS?如果没有,请参阅here。
-
错误的确切措辞/性质是什么?
-
您好!请查看How to ask 部分并编辑您的问题。最好有您收到的确切错误消息以及您为得到它而采取的步骤,以便有人重现它并提供可能的解决方案
-
@AmitNaik 我添加了生成signedUrl的代码
标签: google-cloud-storage gsutil preflight