方法一
要将PDF或Word转换为HTML并保留原有样式,可以使用pdfjs-dist和mammoth.js这两个库。首先需要安装这两个库:
npminstall pdfjs-dist mammoth.js
然后在Vue项目中使用这两个库进行转换:
import * as pdfjsLib from 'pdfjs-dist';import{ convertToHtml } from 'mammoth';export default {
methods: {
async convertFileToHtml(file){
const fileType = file.type.split('/')[1];
const fileExtension = fileType ==='pdf' ? '.pdf':'.docx';
// 将文件转换为Blob对象
const fileReader = new FileReader();
fileReader.onload =(event)=>{
const arrayBuffer = event.target.result;
const byteArray = new Uint8Array(arrayBuffer);
const blob = new Blob([byteArray], { type: fileType + fileExtension });if(fileType ==='pdf'){
// 使用pdfjsLib将PDF转换为HTML
const pdfData = await pdfjsLib.getDocument(blob).promise;
const pageNumber =1;
const scale =1;
const viewport = pageNumber * scale;
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.width = pdfData.internal.pageSize.getWidth() * scale;
canvas.height = pdfData.internal.pageSize.getHeight() * scale;
const renderContext ={
canvasContext: context,
viewport: viewport,
};
const renderTask = pdfData.getPage(pageNumber).render(renderContext);
await renderTask.promise;
const base64Image = canvas.toDataURL('image/png');
// 将base64Image转换为HTML
const htmlContent =`<img src="${base64Image}" />`;return htmlContent;}elseif(fileType ==='docx'){
// 使用mammoth将Word转换为HTML
const htmlContent = await convertToHtml(blob, { format: 'html'});return htmlContent;}};
fileReader.readAsArrayBuffer(blob);},
},
};
在Vue模板中使用这个方法:
<template><div><input type="file" @change="handleFileChange" /></div></template><script>import convertFileToHtml from '@/utils/convertFileToHtml';export default {
methods: {...convertFileToHtml(),
},
};</script>
方法二
要实现在Vue中复制Word文档并还原样式,可以使用mammoth.js库将Word文档转换为HTML,然后使用html-to-paper库将HTML内容呈现为可打印的PDF。以下是实现此功能的步骤:
1.安装依赖库:
npminstall mammoth html-to-paper
2.在Vue组件中引入依赖库:
import * as mammoth from 'mammoth';import htmlToPaper from 'html-to-paper';
3.创建一个方法来处理Word文档的上传和预览:
methods: {
async handleWordUpload(event){
const file= event.target.files[0];if(!file){return;}
// 将Word文档转换为HTML
const result = await mammoth.convertToHtml({ arrayBuffer: file});
const htmlContent = result.value;
// 将HTML内容呈现为可打印的PDF
const printElement = document.createElement('div');
printElement.innerHTML = htmlContent;
htmlToPaper(printElement);},
},
4.在Vue模板中添加一个文件输入框和预览按钮:
<template><div><input type="file" @change="handleWordUpload" /><button>预览</button></div></template>
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