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使用以下代碼保存Google圖表。但它越來越下載的文件,而不是圖像,它被扔以下將資源解釋爲文檔,但以MIME類型圖像/八位字節流傳輸
"Resource interpreted as Document but transferred with MIME type image/octet-stream: "data:image/octet-stream;base64,..."
,代碼:
function getImgData(chartContainer) {
var chartArea = chartContainer.getElementsByTagName('div')[1];
var svg = chartArea.innerHTML;
var doc = chartContainer.ownerDocument;
var canvas = doc.createElement('canvas');
canvas.setAttribute('width', chartArea.offsetWidth);
canvas.setAttribute('height', chartArea.offsetHeight);
canvas.setAttribute(
'style',
'position: absolute; ' +
'top: ' + (-chartArea.offsetHeight * 2) + 'px;' +
'left: ' + (-chartArea.offsetWidth * 2) + 'px;');
doc.body.appendChild(canvas);
canvg(canvas, svg);
var imgData = canvas.toDataURL("image/png");
canvas.parentNode.removeChild(canvas);
return imgData;
}
function saveAsImg(chartContainer) {
var imgData = getImgData(chartContainer);
window.location = imgData.replace("image/png", "image/octet-stream");
}
你節省什麼類型的圖表?爲什麼不使用['getImageURI()'](https://developers.google.com/chart/interactive/docs/printing)?另外,你可以澄清,_getting下載爲一個文件,而不是一個image_?你如何計劃保存圖表,如果不在文件中? – WhiteHat
這是一個沒有擴展名的文件。就像一個Windows exe文件。 – NaaN