PDFJS 使用问题记录
解决pdf预览时不显示签名图片的问题
解决pdf预览时不显示签名图片的问题 https://github.com/kekingcn/kkFileView/pull/264/files
签名和验签sdk
签名和验签sdk:https://github.com/rootca-id/pkiwebsdk/blob/master/src/pdf.js
No "GlobalWorkerOptions.workerSrc" specified
https://github.com/mozilla/pdf.js/issues/10478
How can I load only one or a few pages at one time? #8897
https://github.com/mozilla/pdf.js/issues/8897
使用方式
参考使用方式:
js
import * as pdfJS from 'pdfjs-dist'
import * as pdfJSWeb from 'pdfjs-dist/web/pdf_viewer'
import 'pdfjs-dist/web/pdf_viewer.css'
const eventBus = new pdfJSWeb.EventBus();
const doc = await pdfJS.getDocument({
url: activePdf.url,
}).promise
const page = await doc.getPage(pageNum)
const origViewport = page.getViewport({ scale: 1 })
const scale = wrapperSize.width / origViewport.width
const viewport = page.getViewport({ scale })
const pageView = new pdfJSWeb.PDFPageView({
container: canvas,
id: pageNum,
scale: 1,
defaultViewport: viewport,
eventBus,
})
pageView.setPdfPage(page)
pageView.draw()需要引入 pdf.worker.js 并且 webpack 的话需要 worker-loader 来处理 worker,Vite的话是直接支持的。
实战参考项目
基于PDFJS-DIST + CANVAS的PDF模板签字盖章定位工具
仓库地址:https://gitee.com/twoke/pdf-template-signature-location