1.base64不显示中文
由于本地没有pdf文件中文字字体,导致无法直接显示中文 如 Adobe-GB1 解决方案
let dataURI = 'data:application/pdf;base64,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'
function convertDataURIToBinary(dataURI) {
var BASE64_MARKER = ';base64,';
var base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
var base64 = dataURI.substring(base64Index);
var raw = window.atob(base64);
var rawLength = raw.length;
var array = new Uint8Array(new ArrayBuffer(rawLength));
for(var i = 0; i < rawLength; i++) {
array[i] = raw.charCodeAt(i);
}
return array;
}
await PDFJS.getDocument({data: convertDataURIToBinary(dataURI), cMapUrl: 'https://cdn.jsdelivr.net/npm/pdfjs-dist@2.0.288/cmaps/', cMapPacked: true})
2.ios不显示所有页面
降低分辨率