vue PDF或Word转换为HTML并保留原有样式

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:

npm install 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;
        } else if (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:

npm install 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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