vue3 pdfjs-dist base64渲染成pdf
时间: 2024-01-12 07:21:08 浏览: 148
以下是使用vue3和pdfjs-dist将base64渲染成pdf的示例代码:
1. 首先,安装pdfjs-dist依赖:
```shell
npm install pdfjs-dist --save
```
2. 在Vue组件中引入pdfjs-dist和pdf.worker.js文件:
```javascript
import pdfjsLib from 'pdfjs-dist/build/pdf';
import pdfjsWorker from 'pdfjs-dist/build/pdf.worker.entry';
pdfjsLib.GlobalWorkerOptions.workerSrc = pdfjsWorker;
```
3. 创建一个方法来渲染base64为pdf:
```javascript
methods: {
renderPDF(base64Data) {
const loadingTask = pdfjsLib.getDocument({ data: atob(base64Data) });
loadingTask.promise.then((pdf) => {
const pageNumber = 1; // 渲染第一页
pdf.getPage(pageNumber).then((page) => {
const canvas = document.getElementById('pdf-canvas');
const context = canvas.getContext('2d');
const viewport = page.getViewport({ scale: 1 });
canvas.height = viewport.height;
canvas.width = viewport.width;
const renderContext = {
canvasContext: context,
viewport: viewport,
};
page.render(renderContext);
});
});
},
}
```
4. 在模板中添加一个canvas元素来显示pdf:
```html
<template>
<div>
<canvas id="pdf-canvas"></canvas>
</div>
</template>
```
5. 调用renderPDF方法并传入base64数据:
```html
mounted() {
const base64Data = "your_base64_data_here";
this.renderPDF(base64Data);
}
```
请注意,上述代码中的"your_base64_data_here"需要替换为实际的base64数据。
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