vue 批量导入
1.下载 包
npm install --save xlsx file-saver
2.组件中引入
import XLSX from 'xlsx'
3.直接上代码
<div>
<el-button type="primary" style="margin-left:20px" @click="handleAdd">批量新增</el-button>
<el-dialog title="批量导入Excel" :visible.sync="isShow" width="30%" center>
<input
ref="excel-upload-input"
class="excel-upload-input"
type="file"
accept=".xlsx, .xls"
@change="handleClick"
>
<div class="drop" @drop="handleDrop" @dragover="handleDragover" @dragenter="handleDragover">
将excel文件拖到此处或
<el-button
:loading="loading"
style="margin-left:16px;"
size="mini"
type="primary"
:disabled="isDisabled"
@click="handleUpload"
>点击导入</el-button>
</div>
<span slot="footer" class="dialog-footer">
<el-button @click="uploadTemplate">下载模板</el-button>
<el-button type="primary" @click="submit()">确 定</el-button>
</span>
</el-dialog>
</div>
<script>
import XLSX from 'xlsx'
export default {
props: {
beforeUpload: Function, // eslint-disable-line
onSuccess: Function, // eslint-disable-line
exelData: Object
},
data() {
return {
isShow: false,
loading: false,
istrue: true,
excelData: {
header: null,
results: null
},
isDisabled: true
}
},
methods: {
handleAdd() {
this.isShow = true
if (localStorage.getItem('excelDisable') === 'true') {
this.isDisabled = false
}
},
uploadTemplate() {
import('@/vendor/Export2Excel').then((excel) => {
const tableData = this.formatJson(this.exelData.headData, this.exelData.data)
excel.export_json_to_excel({
header: this.exelData.headData, // 表头 必填
data: tableData || [], // 具体数据 必填
filename: this.exelData.name, // 非必填
autoWidth: true, // 非必填
bookType: 'xlsx' // 非必填
})
})
this.isDisabled = false
localStorage.setItem('excelDisable', true)
},
formatJson(filterVal, jsonData) {
return jsonData.map((v) =>
filterVal.map((j) => {
return v[j]
})
)
},
handleUpload() {
this.$refs['excel-upload-input'].click()
},
handleDrop(e) {
e.stopPropagation()
e.preventDefault()
if (this.loading) return
const files = e.dataTransfer.files
if (files.length !== 1) {
this.$message.error('Only support uploading one file!')
return
}
const rawFile = files[0] // only use files[0]
if (!this.isExcel(rawFile)) {
this.$message.error(
'Only supports upload .xlsx, .xls, .csv suffix files'
)
return false
}
this.upload(rawFile)
e.stopPropagation()
e.preventDefault()
},
handleDragover(e) {
e.stopPropagation()
e.preventDefault()
e.dataTransfer.dropEffect = 'copy'
},
generateData({ header, results }) {
this.excelData.header = header
this.excelData.results = results
this.onSuccess && this.onSuccess(this.excelData)
},
submit() {
this.$emit('submit', this.excelData)
},
handleClick(e) {
const files = e.target.files
const rawFile = files[0] // only use files[0]
if (!rawFile) return
this.upload(rawFile)
},
upload(rawFile) {
this.$refs['excel-upload-input'].value = null // fix can't select the same excel
if (!this.beforeUpload) {
this.readerData(rawFile)
return
}
const before = this.beforeUpload(rawFile)
if (before) {
this.readerData(rawFile)
}
},
readerData(rawFile) {
this.loading = true
return new Promise((resolve, reject) => {
const reader = new FileReader()
reader.onload = (e) => {
const data = e.target.result
const workbook = XLSX.read(data, { type: 'array' })
const firstSheetName = workbook.SheetNames[0]
const worksheet = workbook.Sheets[firstSheetName]
const header = this.getHeaderRow(worksheet)
const results = XLSX.utils.sheet_to_json(worksheet)
this.generateData({ header, results })
this.loading = false
this.isShow = false
resolve()
}
reader.readAsArrayBuffer(rawFile)
})
},
getHeaderRow(sheet) {
const headers = []
const range = XLSX.utils.decode_range(sheet['!ref'])
let C
const R = range.s.r
/* start in the first row */
for (C = range.s.c; C <= range.e.c; ++C) {
/* walk every column in the range */
const cell = sheet[XLSX.utils.encode_cell({ c: C, r: R })]
/* find the cell in the first row */
let hdr = 'UNKNOWN ' + C // <-- replace with your desired default
if (cell && cell.t) hdr = XLSX.utils.format_cell(cell)
headers.push(hdr)
}
return headers
},
isExcel(file) {
return /\.(xlsx|xls|csv)$/.test(file.name)
}
}
}
</script>
<style scoped>
.excel-upload-input {
display: none;
z-index: -9999;
}
.drop {
border: 2px dashed #bbb;
height: 160px;
line-height: 160px;
margin: 0 auto;
font-size: 24px;
border-radius: 5px;
text-align: center;
color: #bbb;
position: relative;
}
</style>
使用组件
<uploadExcel
v-show="true"
:on-success="handleSuccess"
:before-upload="beforeUpload"
:exel-data="exelData"
/>
exelData: {
name: '热用户管理', //文件名
headData: [ 'StationName','BranchName', ], 导入头部字段名
data: [ { UserCode: '用户编号',StationName: '换热站',BranchName: '机组', Village: '所属小区', Floor: '所属楼', Unit: '单元号', House: '户号', } ] //键值对
},
记录下我的一些小功能
记录下一些常用小功能 方便搬运
