网站建设一般多少个板块,网站建设语言学什么,电子商务论文5000字,微信小程序超市平台1.下载 您可以在以下网址下载pdfjsLib#xff1a;https://github.com/mozilla/pdf.js pdfjsLib是一个开源项目#xff0c;您可以在GitHub上找到其源代码和相关资源。 2.放置文件位置 3.进入 在index.html引入
script src% BASE_URL %static/pdfjs-dist/b…1.下载 您可以在以下网址下载pdfjsLibhttps://github.com/mozilla/pdf.js pdfjsLib是一个开源项目您可以在GitHub上找到其源代码和相关资源。 2.放置文件位置 3.进入 在index.html引入
script src% BASE_URL %static/pdfjs-dist/build/pdf.js/script4.获取pdf文件的信息并转换为链接
div classcreateModelpdf-viewer :urlpdfUrl refpdf //divmethods: {// 初始化数据initDate () {this.getPDFURL()},async getPDFURL () {if (this.fileObj.id) {try {const data await uploadApi.getPDF(this.fileObj.id)const blob new Blob([data]);this.pdfUrl window.URL.createObjectURL(blob)this.$nextTick(() {this.$refs.pdf.init()})} catch (error) {console.log(error)this.clearData()}}},clearData () {if (this.pdfUrl) {window.URL.revokeObjectURL(this.pdfUrl)}this.pdfUrl this.$nextTick(() {this.$refs.pdf?.destroyedData()})}},beforeDestroy () {this.clearData()},5.在PdfViewer.vue组件中
methods: {init () {this.renderPDF();},async renderPDF () {if (!this.url) returnlet containerWidth document.querySelector(.pdf-container).offsetWidththis.scale containerWidth / 594const pdf await pdfjsLib.getDocument(this.url).promise;console.log(pdf, pdf)this.numPages pdf.numPages;this.$nextTick(async () {for (let i 1; i this.numPages; i) {const canvasId pdfCanvas- i;const canvasEl this.$refs[canvasId][0];this.canvasEls.push(canvasEl);const page await pdf.getPage(i);const viewport page.getViewport({ scale: this.scale });canvasEl.height viewport.height;canvasEl.width viewport.width;const canvasContext canvasEl.getContext(2d);await page.render({canvasContext,viewport,}).promise;}})},destroyedData () {this.numPages 0this.canvasEls []}},
