1、安装ng2-pdf-viewer与pdfjs-dist
npm install ng2-pdf-viewer --save
npm install pdfjs-dist --save
2、哪个模块用到将包引入哪个模块
<pdf-viewer [src]="pdfSrc" [page]="page" [zoom]="1" [original-size]="true" style="display: block;" ></pdf-viewer>