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test.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>PDF.js PDF Viewer</title>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/pdf.min.js"></script>
<script>
// 设置pdf.worker.js的路径
pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdn.jsdelivr.net/npm/[email protected]/build/pdf.worker.min.js';
</script>
</head>
<body>
<h1>选择PDF文件进行查看</h1>
<input type="file" id="fileInput" accept=".pdf" />
<canvas id="pdfCanvas"></canvas>
<script>
const fileInput = document.getElementById('fileInput');
const canvas = document.getElementById('pdfCanvas');
const context = canvas.getContext('2d');
fileInput.addEventListener('change', (event) => {
const file = event.target.files[0];
if (file) {
const fileReader = new FileReader();
fileReader.onload = function () {
const typedarray = new Uint8Array(this.result);
pdfjsLib.getDocument(typedarray).promise.then(pdf => {
console.log('PDF loaded');
// 获取第一页
pdf.getPage(1).then(page => {
const scale = 1.5;
const viewport = page.getViewport({ scale: scale });
canvas.height = viewport.height;
canvas.width = viewport.width;
const renderContext = {
canvasContext: context,
viewport: viewport
};
page.render(renderContext).promise.then(() => {
console.log('Page rendered');
});
});
});
};
fileReader.readAsArrayBuffer(file);
}
});
</script>
</body>
</html>