Vue pdf blob 文件流 pdfjs-dist 预览
时间: 2023-11-09 11:54:05 浏览: 244
对于在Vue中使用pdf.js-dist预览blob文件流的问题,你可以按照以下步骤进行操作:
1. 安装pdf.js-dist库:
```shell
npm install pdfjs-dist
```
2. 在Vue组件中引入pdf.js-dist库:
```javascript
import pdfjsLib from 'pdfjs-dist'
```
3. 创建一个方法来加载并预览blob文件流:
```javascript
async loadBlobPdf(blob) {
const loadingTask = pdfjsLib.getDocument({ data: blob })
const pdf = await loadingTask.promise
const pageNumber = 1
const page = await pdf.getPage(pageNumber)
const scale = 1.5
const viewport = page.getViewport({ scale })
const canvas = this.$refs.pdfCanvas
const context = canvas.getContext('2d')
canvas.height = viewport.height
canvas.width = viewport.width
const renderContext = {
canvasContext: context,
viewport: viewport
}
await page.render(renderContext)
}
```
4. 在模板中使用canvas元素来显示pdf:
```html
<canvas ref="pdfCanvas"></canvas>
```
5. 调用loadBlobPdf方法并传入blob文件流:
```javascript
const response = await fetch('your_blob_file_url')
const blob = await response.blob()
this.loadBlobPdf(blob)
```
以上步骤会将blob文件流加载并在canvas中预览。记得将'your_blob_file_url'替换为实际的blob文件的URL。
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