vue将html页面转成pdf文件并导出

原文链接

npm install html2canvas -S //安装html2canvas的时候，项目中报错，只需降到1.3.2版本即可

npm install jspdf -S

utils目录下新建文件htmlToPdf.js

import html2Canvas from "html2canvas";
import JsPDF from "jspdf";
import { Loading } from "element-ui"; //此处根据你实际使用的框架的loading进行引入
let loading;
export default {
    install(Vue, options) {
        Vue.prototype.getPdf = function(pdfTitle) {
            loading = Loading.service({
                lock: true,
                text: "正在下载pdf...",
                background: "rgba(0,500,200,.5)"
            });
            html2Canvas(document.querySelector("#pdfDom"), {
                allowTaint: true,
                useCORS: true
            }).then(function(canvas) {
                loading.close();
                let contentWidth = canvas.width;
                let contentHeight = canvas.height;
                let pageHeight = (contentWidth / 592.28) * 841.89;
                let leftHeight = contentHeight;
                let position = 0;
                let imgWidth = 595.28;
                let imgHeight = (592.28 / contentWidth) * contentHeight;
                let pageData = canvas.toDataURL("image/jpeg", 1.0);
                let PDF = new JsPDF("", "pt", "a4");
                if (leftHeight < pageHeight) {
                    PDF.addImage(pageData, "JPEG", 0, 0, imgWidth, imgHeight);
                } else {
                    while (leftHeight > 0) {
                        PDF.addImage(pageData, "JPEG", 0, position, imgWidth, imgHeight);
                        leftHeight -= pageHeight;
                        position -= 841.89;
                        if (leftHeight > 0) {
                            PDF.addPage();
                        }
                    }
                }
                PDF.save(pdfTitle + ".pdf");
            });
        };
    }
};

在main.js中

import htmlToPdf from "./utils/htmlToPdf";
Vue.use(htmlToPdf);

最后在你需要导出的内容上添加id=“pdfDom”，在导出按钮上添加事件@click=‘getPdf(此处是文件名字)’