|
@@ -1,208 +0,0 @@
|
|
|
-import { injectable, Service } from './service'
|
|
|
|
|
-import * as XLSX from 'xlsx'
|
|
|
|
|
-import html2canvas from 'html2canvas'
|
|
|
|
|
-import JSPDF from 'jspdf'
|
|
|
|
|
-
|
|
|
|
|
-/** 文件导出方法 */
|
|
|
|
|
-@injectable
|
|
|
|
|
-export default class EexportService extends Service {
|
|
|
|
|
-
|
|
|
|
|
- /**
|
|
|
|
|
- * 自动下载
|
|
|
|
|
- * @param url 保存地址|blob
|
|
|
|
|
- * @param saveName 文件名
|
|
|
|
|
- */
|
|
|
|
|
- download(url: string | Blob | object, saveName: string) {
|
|
|
|
|
- if (typeof url === 'object' && url instanceof Blob) {
|
|
|
|
|
- url = URL.createObjectURL(url) // 创建blob地址
|
|
|
|
|
- }
|
|
|
|
|
- const aLink = document.createElement('a')
|
|
|
|
|
- aLink.href = url as any
|
|
|
|
|
- aLink.download = saveName || '' // HTML5新增的属性,指定保存文件名,可以不要后缀,注意,file:///模式下不会生效
|
|
|
|
|
- let event
|
|
|
|
|
- if (window.MouseEvent) event = new MouseEvent('click')
|
|
|
|
|
- else {
|
|
|
|
|
- event = document.createEvent('MouseEvents')
|
|
|
|
|
- event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
|
|
|
|
|
- }
|
|
|
|
|
- aLink.dispatchEvent(event)
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- /**
|
|
|
|
|
- * 解析excel表格
|
|
|
|
|
- * @param file 文件
|
|
|
|
|
- * @returns
|
|
|
|
|
- */
|
|
|
|
|
- exp2json = async (file: File) => new Promise((resolve, reject) => {
|
|
|
|
|
- try {
|
|
|
|
|
- const reader = new FileReader()
|
|
|
|
|
- reader.onload = (e) => {
|
|
|
|
|
- const wb = XLSX.read(e.target?.result, {
|
|
|
|
|
- type: 'binary'
|
|
|
|
|
- }) // 读取完成的数据
|
|
|
|
|
- // 转成json header解析第一行标题
|
|
|
|
|
- const data = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]], { header: 1 })
|
|
|
|
|
- resolve(data)
|
|
|
|
|
- }
|
|
|
|
|
- reader.readAsBinaryString(file)
|
|
|
|
|
- } catch (error) {
|
|
|
|
|
- console.log('解析错误')
|
|
|
|
|
- reject(error)
|
|
|
|
|
- }
|
|
|
|
|
- })
|
|
|
|
|
-
|
|
|
|
|
- /**
|
|
|
|
|
- * 导出excel表格
|
|
|
|
|
- * @param arr 数据是数组包含的对象
|
|
|
|
|
- * @param fileName 名字
|
|
|
|
|
- */
|
|
|
|
|
- exp2excel = (arr: object[], fileName: string, cellMerges?: Array<any>) => {
|
|
|
|
|
- const sheet = XLSX.utils.json_to_sheet(arr)
|
|
|
|
|
- // excel宽高设置
|
|
|
|
|
- sheet['!cols'] = arr.map(() => ({ wch: 30 }))
|
|
|
|
|
- if (cellMerges) {
|
|
|
|
|
- sheet['!merges'] = cellMerges // <====合并单元格
|
|
|
|
|
- }
|
|
|
|
|
- // 转blob
|
|
|
|
|
- const sheet2blob = (sheets: any, sheetName = 'sheet1') => {
|
|
|
|
|
- const workbook = {
|
|
|
|
|
- SheetNames: [sheetName],
|
|
|
|
|
- Sheets: {} as any
|
|
|
|
|
- }
|
|
|
|
|
- workbook.Sheets[sheetName] = sheets
|
|
|
|
|
- // 生成excel的配置项
|
|
|
|
|
- const wopts = {
|
|
|
|
|
- bookType: 'xlsx', // 要生成的文件类型
|
|
|
|
|
- bookSST: false, // 是否生成Shared String Table,官方解释是,如果开启生成速度会下降,但在低版本IOS设备上有更好的兼容性
|
|
|
|
|
- type: 'binary'
|
|
|
|
|
- } as any
|
|
|
|
|
- const wbout = XLSX.write(workbook, wopts)
|
|
|
|
|
- // 字符串转ArrayBuffer
|
|
|
|
|
- const s2ab = (s: string) => {
|
|
|
|
|
- const buf = new ArrayBuffer(s.length)
|
|
|
|
|
- const view = new Uint8Array(buf)
|
|
|
|
|
- for (let i = 0; i !== s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF
|
|
|
|
|
- return buf
|
|
|
|
|
- }
|
|
|
|
|
- const blob = new Blob([s2ab(wbout)], { type: 'application/octet-stream' })
|
|
|
|
|
-
|
|
|
|
|
- return blob
|
|
|
|
|
- }
|
|
|
|
|
- this.download(sheet2blob(sheet), `${fileName}.xlsx`)
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- /**
|
|
|
|
|
- * dom导出excel
|
|
|
|
|
- * @param domID domID
|
|
|
|
|
- * @param fileName 文件名
|
|
|
|
|
- */
|
|
|
|
|
- dom2excel = (domID: string, fileName: string) => {
|
|
|
|
|
- const dom = document.getElementsByTagName(domID)
|
|
|
|
|
- if (!dom) return
|
|
|
|
|
- const wb = XLSX.utils.table_to_book(dom[0])
|
|
|
|
|
- const baty = XLSX.write(wb, { bookType: 'xlsx', bookSST: false, type: 'binary' })
|
|
|
|
|
- // 字符串转ArrayBuffer
|
|
|
|
|
- const s2ab = (s: any) => {
|
|
|
|
|
- const buf = new ArrayBuffer(s.length)
|
|
|
|
|
- const view = new Uint8Array(buf)
|
|
|
|
|
- for (let i = 0; i !== s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF
|
|
|
|
|
- return buf
|
|
|
|
|
- }
|
|
|
|
|
- const blob = new Blob([s2ab(baty)], { type: 'application/octet-stream' })
|
|
|
|
|
- this.download(blob, `${fileName}.xlsx`)
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- /**
|
|
|
|
|
- * 导出PDF
|
|
|
|
|
- * @param domID 需要输出PDF的页面id
|
|
|
|
|
- * @param fileName 文件名
|
|
|
|
|
- * @param type 默认A4分页
|
|
|
|
|
- * @param wMultiple 宽倍数
|
|
|
|
|
- * @param hMultiple 高倍数
|
|
|
|
|
- * @returns
|
|
|
|
|
- */
|
|
|
|
|
- exp2pdf = async (domID: string, fileName: string, type = 'A4', wMultiple = null, hMultiple = null) => {
|
|
|
|
|
- const dom = document.getElementById(domID)
|
|
|
|
|
- if (!dom) return
|
|
|
|
|
- const domHeight = dom.offsetHeight // 获取DOM高度
|
|
|
|
|
- const domWidth = dom.offsetWidth // 获取DOM宽度
|
|
|
|
|
- const canvas = await html2canvas(dom, {
|
|
|
|
|
- logging: false,
|
|
|
|
|
- useCORS: true, // 允许图片跨域
|
|
|
|
|
- scale: 1.5,
|
|
|
|
|
- width: wMultiple ? wMultiple * domWidth : undefined,
|
|
|
|
|
- height: hMultiple ? hMultiple * domHeight : undefined
|
|
|
|
|
- })
|
|
|
|
|
-
|
|
|
|
|
- if (type === 'A4') {
|
|
|
|
|
- // A4分页
|
|
|
|
|
- const pdf = new JSPDF('p', 'mm', 'a4') // A4纸,纵向
|
|
|
|
|
- const ctx = canvas.getContext('2d') as any
|
|
|
|
|
- const a4w = 200
|
|
|
|
|
- const a4h = 277 // A4大小,210mm x 297mm,四边各保留20mm的边距
|
|
|
|
|
- const imgHeight = Math.floor(a4h * canvas.width / a4w) // 按A4显示比例换算一页图像的像素高度
|
|
|
|
|
- let renderedHeight = 0
|
|
|
|
|
- while (renderedHeight < canvas.height) {
|
|
|
|
|
- const page = document.createElement('canvas')
|
|
|
|
|
- page.width = canvas.width
|
|
|
|
|
- page.height = Math.min(imgHeight, canvas.height - renderedHeight) // 可能内容不足一页
|
|
|
|
|
- // 用getImageData剪裁指定区域,并画到前面创建的canvas对象中
|
|
|
|
|
- page.getContext('2d')?.putImageData(ctx.getImageData(0, renderedHeight, canvas.width, Math.min(imgHeight, canvas.height - renderedHeight)), 0, 0)
|
|
|
|
|
- pdf.addImage(page.toDataURL('image/jpeg', 1.0), 'JPEG', 10, 10, a4w, Math.min(a4h, a4w * page.height / page.width)) // 添加图像到页面,保留10mm边距
|
|
|
|
|
- renderedHeight += imgHeight
|
|
|
|
|
- if (renderedHeight < canvas.height) { pdf.addPage() } // 如果后面还有内容,添加一个空页
|
|
|
|
|
- // delete page;
|
|
|
|
|
- }
|
|
|
|
|
- pdf.save(fileName)
|
|
|
|
|
- } else {
|
|
|
|
|
- // 整张
|
|
|
|
|
- const pdf = new JSPDF('p', 'px', [domWidth, domHeight])
|
|
|
|
|
- pdf.addImage(canvas.toDataURL('image/jpeg', 1.0), 'JPEG', 10, 10, domWidth, domHeight)
|
|
|
|
|
- pdf.save(fileName)
|
|
|
|
|
- }
|
|
|
|
|
- }
|
|
|
|
|
-
|
|
|
|
|
- /**
|
|
|
|
|
- * 导出PNG
|
|
|
|
|
- * @param domID 需要输出PDF的页面id
|
|
|
|
|
- * @param fileName 文件名
|
|
|
|
|
- * @param bkcolor 背景色
|
|
|
|
|
- */
|
|
|
|
|
- exp2png = async (domID: string, fileName: string, bkcolor: string) => {
|
|
|
|
|
- window.scroll(0, 0) // 首先先顶部
|
|
|
|
|
- const design = document.getElementById(domID) as HTMLElement
|
|
|
|
|
- if (!design) return
|
|
|
|
|
- const imgHeight = design.offsetHeight // 获取DOM高度
|
|
|
|
|
- const imgWidth = design.offsetWidth // 获取DOM宽度
|
|
|
|
|
- const scale = window.devicePixelRatio <= 3 ? 3 : window.devicePixelRatio // 获取设备像素比
|
|
|
|
|
- const canvas = await html2canvas(design, {
|
|
|
|
|
- backgroundColor: bkcolor, // 设置背景颜色
|
|
|
|
|
- useCORS: true, // 允许图片跨域
|
|
|
|
|
- scale, // 缩放3倍,使得图片更加清晰=>越清晰图片越大
|
|
|
|
|
- width: imgWidth,
|
|
|
|
|
- height: imgHeight,
|
|
|
|
|
- imageTimeout: 5000 // 设置图片的超时,设置0为禁用
|
|
|
|
|
- })
|
|
|
|
|
-
|
|
|
|
|
- // 两种下载方式url + blob
|
|
|
|
|
- let imgURL = canvas.toDataURL('image/png') as any
|
|
|
|
|
- if (typeof imgURL === 'object' && imgURL instanceof Blob) {
|
|
|
|
|
- imgURL = URL.createObjectURL(imgURL) // 创建blob地址
|
|
|
|
|
- this.download(imgURL, fileName)
|
|
|
|
|
- } else {
|
|
|
|
|
- // url + 请求得到blob
|
|
|
|
|
- const htmlrq = new XMLHttpRequest() as any
|
|
|
|
|
- htmlrq.open('GET', imgURL, true)
|
|
|
|
|
- htmlrq.responseType = 'blob'
|
|
|
|
|
- htmlrq.onload = (e: { target: { status: number; response: Blob | MediaSource; } }) => {
|
|
|
|
|
- if (e.target.status === 200) {
|
|
|
|
|
- imgURL = URL.createObjectURL(e.target.response) // 创建blob地址
|
|
|
|
|
- this.download(imgURL, fileName)
|
|
|
|
|
- } else {
|
|
|
|
|
- console.error('下载错误')
|
|
|
|
|
- }
|
|
|
|
|
- }
|
|
|
|
|
- htmlrq.send()
|
|
|
|
|
- }
|
|
|
|
|
- }
|
|
|
|
|
-}
|
|
|