简单导出
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887ccf4554
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@ -20,7 +20,9 @@
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"dagre-d3": "^0.6.4",
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"echarts": "5.3.2",
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"element-plus": "2.2.3",
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"html2canvas": "^1.4.1",
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"json-editor-vue3": "^1.0.6",
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"jspdf": "^2.5.1",
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"nprogress": "0.2.0",
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"qrcodejs2": "0.0.2",
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"sortablejs": "1.15.0",
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@ -1,7 +1,7 @@
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<template>
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<!--基本信息!-->
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<el-main v-loading="mainLoading">
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<div id="exportDiv" class="exportDiv">
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<el-card shadow="hover">
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<el-descriptions title="许可证信息" column=2>
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<el-descriptions-item label="编号:">
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@ -288,10 +288,13 @@
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></el-table-column>
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</scTable>
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</el-card>
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</div>
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<div class="exportBtn" @click="handleExport">导出</div>
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</el-main>
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</template>
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<script>
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import PdfLoader from '@/utils/html2pdf';
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import {genTree} from "@/utils/verificate";
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export default {
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name: "scFire",
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@ -366,8 +369,14 @@
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that.getworkerList();
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that.getgasList();
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})
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let exportDiv = document.getElementById('exportDiv') // 需要导出部分页面的id名
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this.pdfDownLoader = new PdfLoader(exportDiv, '许可证', 'exportDiv') // fileName -->导出文件名, question-table -->防止被截断的class名
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},
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methods: {
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handleExport() {
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this.pdfDownLoader.outPutPdfFn('许可证')
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},
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//根据oplId，查许可证
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getOplData() {
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this.mainLoading = true
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@ -426,5 +435,22 @@
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</script>
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<style scoped>
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.el-drawer__header {
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margin-bottom: 0px;
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}
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.exportDiv{
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padding-top: 20px;
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}
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.exportBtn{
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width: 120px;
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height: 40px;
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color: #ffffff;
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line-height: 40px;
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text-align: center;
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background: #438af4;
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font-size: 18px;
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border-radius: 5px;
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margin-top: 10px;
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box-shadow: 0 0 9px 0px rgba(0,0,0,.2);
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}
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</style>
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@ -0,0 +1,120 @@
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import jsPDF from 'jspdf'
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import html2canvas from 'html2canvas'
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/*
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* 使用说明
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* ele:需要导出pdf的容器元素(dom节点 不是id)
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* pdfFileName: 导出文件的名字 通过调用outPutPdfFn方法也可传参数改变
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* splitClassName: 避免分段截断的类名 当pdf有多页时需要传入此参数 , 避免pdf分页时截断元素 如表格<tr class="itemClass"></tr>
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* 调用方式 先 let pdf = new PdfLoader(ele, 'pdf' ,'itemClass');
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* 若想改变pdf名称 pdf.outPutPdfFn(fileName); outPutPdfFn方法返回一个promise 可以使用then方法处理pdf生成后的逻辑
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* */
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class PdfLoader {
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constructor(ele, pdfFileName, splitClassName) {
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this.ele = ele
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this.pdfFileName = pdfFileName
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this.splitClassName = splitClassName
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this.A4_WIDTH = 595
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this.A4_HEIGHT = 842
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}
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async getPDF(resolve) {
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const ele = this.ele
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const pdfFileName = this.pdfFileName
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const eleW = ele.offsetWidth// 获得该容器的宽
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const eleH = ele.scrollHeight// 获得该容器的高
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const eleOffsetTop = ele.offsetTop// 获得该容器到文档顶部的距离
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const eleOffsetLeft = ele.offsetLeft// 获得该容器到文档最左的距离
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const canvas = document.createElement('canvas')
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let abs = 0
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const win_in = document.documentElement.clientWidth || document.body.clientWidth// 获得当前可视窗口的宽度（不包含滚动条）
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const win_out = window.innerWidth// 获得当前窗口的宽度（包含滚动条）
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if (win_out > win_in) {
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abs = (win_out - win_in) / 2// 获得滚动条宽度的一半
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}
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canvas.width = eleW * 2// 将画布宽&&高放大两倍
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canvas.height = eleH * 2
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const context = canvas.getContext('2d')
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context.scale(2, 2) // 增强图片清晰度
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context.translate(-eleOffsetLeft - abs, -eleOffsetTop)
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html2canvas(ele, {
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useCORS: true// 允许canvas画布内可以跨域请求外部链接图片, 允许跨域请求。
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}).then(async canvas => {
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const contentWidth = canvas.width
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const contentHeight = canvas.height
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// 一页pdf显示html页面生成的canvas高度;
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const pageHeight = (contentWidth / this.A4_WIDTH) * this.A4_HEIGHT // 这样写的目的在于保持宽高比例一致 pageHeight/canvas.width = a4纸高度/a4纸宽度// 宽度和canvas.width保持一致
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// 未生成pdf的html页面高度
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let leftHeight = contentHeight
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// 页面偏移
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let position = 0
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// a4纸的尺寸[595,842],单位像素，html页面生成的canvas在pdf中图片的宽高
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const imgWidth = this.A4_WIDTH - 10 // -10为了页面有右边距
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const imgHeight = (this.A4_WIDTH / contentWidth) * contentHeight
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const pageData = canvas.toDataURL('image/jpeg', 1.0)
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const pdf = jsPDF('', 'pt', 'a4')
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// 有两个高度需要区分，一个是html页面的实际高度，和生成pdf的页面高度(841.89)
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// 当内容未超过pdf一页显示的范围，无需分页
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if (leftHeight < pageHeight) {
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// 在pdf.addImage(pageData, 'JPEG', 左，上，宽度，高度)设置在pdf中显示；
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pdf.addImage(pageData, 'JPEG', 5, 0, imgWidth, imgHeight)
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// pdf.addImage(pageData, 'JPEG', 20, 40, imgWidth, imgHeight);
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} else {
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// 分页
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while (leftHeight > 0) {
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pdf.addImage(pageData, 'JPEG', 5, position, imgWidth, imgHeight)
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leftHeight -= pageHeight
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position -= this.A4_HEIGHT
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// 避免添加空白页
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if (leftHeight > 0) {
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pdf.addPage()
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}
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}
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}
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pdf.save(pdfFileName + '.pdf', { returnPromise: true }).then(() => {
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// 去除添加的空div 防止页面混乱
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const doms = document.querySelectorAll('.emptyDiv')
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for (let i = 0; i < doms.length; i++) {
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doms[i].remove()
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}
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})
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this.ele.style.height = ''
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resolve()
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})
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}
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//此方法是防止（图表之类）内容因为A4纸张问题被截断
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async outPutPdfFn(pdfFileName) {
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return new Promise((resolve, reject) => {
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this.ele.style.height = 'initial'
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pdfFileName ? this.pdfFileName = pdfFileName : null
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const target = this.ele
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const pageHeight = target.scrollWidth / this.A4_WIDTH * this.A4_HEIGHT
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// 获取分割dom，此处为class类名为item的dom
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const domList = document.getElementsByClassName(this.splitClassName)
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// 进行分割操作，当dom内容已超出a4的高度，则将该dom前插入一个空dom，把他挤下去，分割
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let pageNum = 1 // pdf页数
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const eleBounding = this.ele.getBoundingClientRect()
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for (let i = 0; i < domList.length; i++) {
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const node = domList[i]
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const bound = node.getBoundingClientRect()
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const offset2Ele = bound.top - eleBounding.top
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const currentPage = Math.ceil((bound.bottom - eleBounding.top) / pageHeight) // 当前元素应该在哪一页
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if (pageNum < currentPage) {
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pageNum++
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const divParent = domList[i].parentNode // 获取该div的父节点
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const newNode = document.createElement('div')
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newNode.className = 'emptyDiv'
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newNode.style.background = 'white'
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newNode.style.height = (pageHeight * (pageNum - 1) - offset2Ele + 30) + 'px' // +30为了在换下一页时有顶部的边距
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newNode.style.width = '100%'
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divParent.insertBefore(newNode, node) //在每一个节点前面插入一个空的新节点，防止内容被分割截断
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}
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}
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// 异步函数，导出成功后处理交互
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this.getPDF(resolve, reject)
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})
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}
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}
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export default PdfLoader
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@ -230,7 +230,7 @@
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text: '数据请求中，请稍后...',
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background: 'rgba(0, 0, 0, 0)',
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})
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that.$API.hrm.employee.list.req({page:1,page_size:999,belong_dept:that.query.employee__belong_dept})
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that.$API.hrm.employee.list.req({page:1,page_size:999,type__in:'employee,remployee',belong_dept:that.query.employee__belong_dept})
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.then(res=>{
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let promiseList = [];
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let rowData1 = [],rowData2=[];
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