npm i pdfjs-dist

 1 <template>
 2   <div class="previewPdf">
 3     <div class="pdf-box">
 4       <div class="pdfList"></div>
 5     </div>
 6   </div>
 7 </template>
 8 
 9 <script>
10   import PDFJS from \'pdfjs-dist\'
11   
12   export default {
13     name: "previewPdf",
14     data(){
15       return {
16         // pdfSrc: \'\',
17       }
18     },
19     // 请求接口，拿到base64格式的pdf
20     created() {
21       // pdfNo是从上一页传过来的请求时的参数
22       let pdfNo = this.$route.query.pdfNo
23       this.$axios({
24         method:\'post\', url:\'\',
25         data:{pdfNo: pdfNo}
26       }).then((res)=>{
27         let pdfDataList = res.data.result.base64
28         this.showPdf(pdfDataList)
29       })
30     },
31     methods: {
32       // 处理方法
33       async showPdf(base64) {
34         let pdfList = document.querySelector(\'.pdfList\') //通过querySelector选择DOM节点,使用document.getElementById()也一样
35         let decodedBase64 = atob(base64) //使用浏览器自带的方法解码
36         let pdf = await  PDFJS.getDocument({data: decodedBase64}) //返回一个pdf对象
37         let pages = pdf.numPages //声明一个pages变量等于当前pdf文件的页数
38         console.log(\'页数：\', pages)
39         for (let i = 1; i <= pages; i++) { //循环页数
40           let canvas = document.createElement(\'canvas\')
41           let page = await pdf.getPage(i) //调用getPage方法传入当前循环的页数,返回一个page对象
42           let scale = 1; //缩放倍数，1表示原始大小
43           let viewport = page.getViewport(scale);
44           let context = canvas.getContext(\'2d\'); //创建绘制canvas的对象
45           canvas.height = viewport.height; //定义canvas高和宽
46           canvas.width = viewport.width;
47           let renderContext = {
48             canvasContext: context,
49             viewport: viewport
50           };
51           await page.render(renderContext)
52           canvas.className = \'canvas\' //给canvas节点定义一个class名,这里我取名为canvas
53           pdfList.appendChild(canvas) //插入到pdfList节点的最后
54         }
55       }
56       
57     }
58   }
59 </script>
60 
61 <style scoped>
62   .previewPdf, .pdf-box{
63     width: 100%;
64     height: 100%;
65   }
66   .pdf-box{
67     padding-top: 3.75rem;
68   }
69 </style>

 1 sharePdfLink () {
 2   try {
 3     // 分享出去的是一个链接，打开连接就相当于通过前端路由到previewPdf页面，同事发送一个请求，具体操作在previewPdf中实现，就是上边那个页面
 4     // fontEndUrl 是前端服务地址，例如本地：http://192.168.10.20:8085  pdfNo是参数，这就相当于一个get请求，?后是参数
 5     var params = { webPageUrl: fontEndUrl + \'/previewPdf?pdfNo=\'+ pdfNo };
 6     // eslint-disable-next-line no-undef,no-unused-vars
 7     cordova.plugin.DeviceInfo.share(
 8       params,
 9       function succ(data) {
10         console.log(\'Success\', data);
11       },
12       function fail(data) {
13         console.log(\'Fail\', data.errMsg);
14       }
15     );
16   } catch (e) {
17     console.log(\'错误\', e);
18   }
19 },