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我有一堆存儲在Amazon s3存儲桶中的深度縮放圖像,我有一個網頁,用Open Seadragon dzi查看器顯示它們。我能夠顯示圖像,但我無法讓他們下載;我收到安全錯誤,我有一個污染的畫布。無法從污染的畫布下載圖像;我如何下載託管在Amazon s3存儲桶中的Seadragon映像?
我設置在桶CORS設定:
<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
<AllowedOrigin>*</AllowedOrigin>
<AllowedMethod>GET</AllowedMethod>
<MaxAgeSeconds>3000</MaxAgeSeconds>
<AllowedHeader>Authorization</AllowedHeader>
</CORSRule>
</CORSConfiguration>
這讓我來顯示圖像(以前我OpenSeadragon調用失敗,因爲沒有訪問控制,允許原產頭),但我的帆布仍然受到污染。
我嘗試設置crossOrigin政策在海龍觀衆:
var viewer = OpenSeadragon({
crossOrigin: "Anonymous",
id: "databaseviewer",
prefixUrl: "../../Scripts/openseadragon/images/",
tileSources: url,
maxZoomLevel: 20
});
但這並沒有改變任何東西。這是我完整的腳本:
var url = '@Model.ImageUrl';
var viewer = OpenSeadragon({
crossOrigin: "Anonymous",
id: "databaseviewer",
prefixUrl: "../../Scripts/openseadragon/images/",
tileSources: url,
maxZoomLevel: 20
});
viewer.addHandler('open', function() {
var downloadlink = document.getElementById("download");
$(downloadlink).on("click", function() {
var img = viewer.drawer.canvas.toDataURL("image/png");
downloadlink.href = img;
downloadlink.download = '@Model.DatabaseName';
});
});