// 导出

exportData () {

this.$confirm('确认导出XXXXXX？', {

confirmButtonText: '导出',

cancelButtonText: '取消',

type: 'question'

}).then(async () => {

try {

let { data ,headers} = await operateReportExport(Params)//请求数据

this.saveExcelFiles(data, 'xxxxx.xls')//从后端请求的数据处理导出Excel文件

//headers请求参数头

//this. handleExportFile(data, headers)//从后端请求的数据处理导出cvs文件

} catch (e) {}

})

}

导出数据处理

//导出excel文件

saveExcelFiles( data, fileName, blobType = "application/vnd.ms-excel") {

if (!data) {

return;

}

let blob = new Blob([data], {

type: blobType

});

downloadFile(blob, fileName);

}

//导出csv

handleExportFile (stream, header, fileType = 'csv') {

let reader = new FileReader()

reader.onload = e => {

try {

let res = JSON.parse(e.target.result)

if (res.msg) {

Message.error(i18n.t(`${res.code}`))

}

} catch (error) {

let disposition = header['content-disposition']

let fileName = disposition ? disposition.match(/filename=(.*)/)[1] : ''

fileName = fileName ? fileName : `${randomRangeId(14)}${+new Date()}.${fileType}`

downloadFile (stream, fileName)

}

}

try {

reader.readAsText(stream)

} catch (error) {

console.log(error)

}

}

//导出实现

downloadFile (stream, fileName, garbledCode = false) {

if ('msSaveOrOpenBlob' in navigator) {

window.navigator.msSaveOrOpenBlob(stream, fileName)

return

}

if (fileName.endsWith('.csv') && garbledCode) stream = '\ufeff' + stream

let url = window.URL.createObjectURL(new Blob([stream]))

let link = document.createElement('a')

link.style.display = 'none'

link.href = url

link.setAttribute('download', fileName)

document.body.appendChild(link)

link.click()

link.remove()

}

// 获取num长度的随机id

randomRangeId(num) {

let returnStr = ''

let charStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'

for (let i = 0; i < num; i++) {

let index = Math.round(Math.random() * (charStr.length - 1))

returnStr += charStr.substring(index, index + 1)

}

return returnStr

}