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cmdb-ui/src/utils/download.js

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+import moment from 'moment'
+import XLSX from 'xlsx'
+import XLSXS from 'xlsx-js-style'
+
+export const downloadTxt = ({ text, title }) => {
+    const dom = document.createElement('a')
+    dom.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text))
+    dom.setAttribute('download', `${title}.txt`)
+    if (document.createEvent) {
+        var event = document.createEvent('MouseEvents')
+        event.initEvent('click', true, true)
+        dom.dispatchEvent(event)
+    } else {
+        dom.click()
+    }
+}
+
+export const downloadExcel = (data, fileName = `${moment().format('YYYY-MM-DD HH:mm:ss')}.xls`) => {
+    // STEP 1: Create a new workbook
+    const wb = XLSXS.utils.book_new()
+    // STEP 2: Create data rows and styles
+    const rowArray = data
+    // STEP 3: Create worksheet with rows; Add worksheet to workbook
+    const ws = XLSXS.utils.aoa_to_sheet(rowArray)
+    XLSXS.utils.book_append_sheet(wb, ws, fileName)
+
+    let maxColumnNumber = 1 // 默认最大列数
+    rowArray.forEach(item => { if (item.length > maxColumnNumber) { maxColumnNumber = item.length } })
+    // 合并  #将第一行标题列合并
+    // const merges = ['A1:' + String.fromCharCode(64 + parseInt(maxColumnNumber)) + '1']
+    const merges = ['A1:' + createCellPos(maxColumnNumber - 1) + '1']
+    const wsMerge = []
+    merges.map((item) => {
+        wsMerge.push(
+            XLSXS.utils.decode_range(item)
+        )
+    })
+
+    ws['!merges'] = wsMerge
+
+    // 添加列宽
+    ws['!cols'] = (rowArray[1].map(item => {
+        return { width: 22 }
+    }))
+    // 添加行高
+    ws['!rows'] = [{ 'hpt': 80 }]
+    // STEP 4: Write Excel file to browser  #导出
+    XLSXS.writeFile(wb, fileName + '.xlsx')
+}
+
+export const excel2Array = (fileObj) => {
+    return new Promise(function (resolve) {
+        const reader = new FileReader()
+        reader.readAsBinaryString(fileObj)
+        reader.onload = function (e) {
+            const data = e.target.result
+            const workbook = XLSX.read(data, { type: 'binary' })
+            const sheet = workbook.Sheets[workbook.SheetNames[0]]
+            const lt = XLSX.utils.sheet_to_json(sheet, { header: 1 })
+            resolve(lt)
+        }
+    })
+}
+
+export const createCellPos = (n) => {
+    const ordA = 'A'.charCodeAt(0)
+	const ordZ = 'Z'.charCodeAt(0)
+    const len = ordZ - ordA + 1
+    let s = ''
+     while (n >= 0) {
+		s = String.fromCharCode(n % len + ordA) + s
+		n = Math.floor(n / len) - 1
+	}
+	return s
+}