pdfjs-dist锁定版本号2.2.228,别的都不太好使,各种各样的报错
不锁定的时候升高版本出现pdf预览不了
引用的时候 import pdfjsLib from 'pdfjs-dist/build/pdf.js'
import pdfjsLib from 'pdfjs-dist/webpack'这样写会报错,偶尔会报错,找不到问题,所以还是用上面的引用
function renderPdf(pdf) { let pdfDoc = pdf; let fragment = document.createDocumentFragment(); console.log('frage', fragment); for (let i = 1; i <= pdfDoc.numPages; i++) { let canvas = document.createElement('canvas') let canvasContext = canvas.getContext('2d') pdfDoc.getPage(i).then((page) => { var viewport = page.getViewport(1); // 页面缩放比例,值越大越清晰 canvas.height = viewport.height; canvas.width = viewport.width; canvas.style.width = document.body.clientWidth + "px"; canvas.style.height = document.body.clientWidth * (viewport.height / viewport.width) + "px"; canvasContext.clearRect(0, 0, canvas.width, canvas.height); var renderContext = { canvasContext: canvasContext, viewport: viewport, rotate: 90, }; page.render(renderContext) }) fragment.appendChild(canvas) } document.getElementById('pdf-box').appendChild(fragment) } const loadingTask = pdfjsLib.getDocument(this.getImageUrl(this.pdfFile)); loadingTask.promise.then((pdfDocument) => { this.numPages = pdfDocument.numPages; renderPdf(pdfDocument) }) this.pdfFile在这里是后端返回的ali文件信息 this.getImageUrl(this.pdfFile)是返回一个图片地址 标签:canvas,dist,height,width,pdf,pdfjs,viewport From: https://www.cnblogs.com/guodadan/p/16716854.html