之前有说过表格导出到Excel,今天来说一下怎么样导入Excel表格
一般来说这种功能都是封装成组件来使用的,我们来看看如何封装
在component中创建一个.vue文件,然后复制其他大佬的代码,做一个搬运工,具体代码如下
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| <template>
<div>
<input ref="excel-upload-input" class="excel-upload-input" type="file" accept=".xlsx, .xls" @change="handleClick">
<button style="margin-left:16px;" type="primary" @click="handleUpload">上传文件</button>
</div>
</template>
<script>
import XLSX from 'xlsx'
export default {
props: {
beforeUpload: Function,
onSuccess: Function
},
data() {
return {
loading: false,
excelData: {
header: null,
results: null
}
}
},
methods: {
generateData({ header, results }) {
this.excelData.header = header
this.excelData.results = results
this.onSuccess && this.onSuccess(this.excelData)
},
handleUpload() {
this.$refs['excel-upload-input'].click()
},
handleClick(e) {
const files = e.target.files
const rawFile = files[0]
if (!rawFile) return
this.upload(rawFile)
},
upload(rawFile) {
this.$refs['excel-upload-input'].value = null
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
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)$/.test(file.name)
}
}
}
</script>
<style scoped>
.excel-upload-input{
display: none;
z-index: -9999;
}
.drop{
border: 2px dashed #bbb;
width: 600px;
height: 160px;
line-height: 160px;
margin: 0 auto;
font-size: 24px;
border-radius: 5px;
text-align: center;
color: #bbb;
position: relative;
}
</style>
|
记得要安装一下 xlsx
然后就可以使用了
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| <template>
<div>
<upload-excel-component :on-success="handleSuccess" :before-upload="beforeUpload" />
</div>
</template>
<script>
import UploadExcelComponent from '@/components/excel.vue'
export default {
name: 'UploadExcel',
components: { UploadExcelComponent },
data() {
return {
tableData: [],
tableHeader: []
}
},
methods: {
beforeUpload(file) {
const isLt1M = file.size / 1024 / 1024 < 1
if (isLt1M) {
return true
}
this.$message({
message: 'Please do not upload files larger than 1m in size.',
type: 'warning'
})
return false
},
handleSuccess({ results, header }) {
console.log(results)
console.log(header)
}
}
}
</script>
|
使用也很简单,handleSuccess函数中,results就是我们需要的数据了
好了,导入Excel就差不多了
