vue匯入，匯出，列表展示excel資料
阿新 • • 發佈：2021-10-07
1 <template>
2 <div class="index" v-loading.fullscreen.lock="fullscreenLoading" element-loading-text="拼命載入中...">
3 <input type="file" @change="importFile(this)" id="imFile" style="display: none"
4 accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel
<script>
import {
fetchList,
projectList,
fetchName,
} from '/api/case'
import service from "../../utils/axios";
import Interface from "../../components/interface";
// import Pagination from "../../components/Pagination"
// 引入xlsx
var XLSX = require('xlsx')
export default {
name: 'info',
components: {Interface,},
data() {
return {
total: 0,
search: [],
value: [],
loading: false,
timeout: null,
dialog: false,
filter: '',
fullscreenLoading: false, // 載入中
imFile: '', // 匯入檔案el
outFile: '', // 匯出檔案el
errorDialog: false, // 錯誤資訊彈窗
errorMsg: '', // 錯誤資訊內容
list: [], // 返回資料
listClone: [],
queryInfo: {
page: 1,
limit: 20,
name: ''
},
dialogStatus: '',
textMap: {
update: '編輯',
create: '建立'
},
formLabelWidth: '80px',
timer: null,
}
},
mounted() {
this.imFile = document.getElementById('imFile')
this.outFile = document.getElementById('downlink')
this.list = this.list.map(item => {
return {value: `value:${item}`, label: `label:${item}`};
});
},
watch: {
search: {
handler(val) {
this.listClone = val.length ? this.list.filter((e) => val.find((item) => item === e.id)) : this.list;
},
deep: true,
immediate: true,
},
},
created() {
this.getList()
},
methods: {
/* 篩選 */
nameList() {
fetchName(this.queryInfo).then((service) => {
this.list = service.data.data.items
})
},
/* 修改資料 */
handleUpdate() {
projectList().then((res) => (this.projects = res.data.items))
this.list = Object.assign({}, row) // copy obj
this.dialogStatus = 'update'
this.$nextTick(() => {
this.$refs['dataForm'].clearValidate()
})
},
/* 獲取list資料 */
getList() {
this.listLoading = true
fetchList(this.queryInfo).then((service) => {
this.list = service.data.data.items
this.listClone = this.list;
this.total = service.data.data.total
// Just to simulate the time of the request
setTimeout(() => {
this.listLoading = false
}, 1.5 * 1000)
})
},
/* 匯入按鈕 */
uploadFile: function () { // 點選匯入按鈕
this.imFile.click()
},
/* 匯出 */
downloadFile: function (rs) { // 點選匯出按鈕
let data = [{}]
for (let k in rs[0]) {
data[0][k] = k
}
data = data.concat(rs)
this.downloadExl(data, 'test用例')
},
/* 匯入execl */
importFile: function () { // 匯入excel
this.fullscreenLoading = true
let obj = this.imFile
if (!obj.files) {
this.fullscreenLoading = false
return
}
var f = obj.files[0]
var reader = new FileReader()
let $t = this
reader.onload = function (e) {
var data = e.target.result
if ($t.rABS) {
$t.wb = XLSX.read(btoa(this.fixdata(data)), { // 手動轉化
type: 'base64'
})
} else {
$t.wb = XLSX.read(data, {
type: 'binary'
})
}
let json = XLSX.utils.sheet_to_json($t.wb.Sheets[$t.wb.SheetNames[0]])
console.log(typeof json)
$t.dealFile($t.analyzeData(json)) // analyzeData: 解析匯入資料
}
if (this.rABS) {
reader.readAsArrayBuffer(f)
} else {
reader.readAsBinaryString(f)
}
},
/* 匯出execl */
downloadExl: function (json, downName, type) { // 匯出到excel
let keyMap = [] // 獲取鍵
for (let k in json[0]) {
keyMap.push(k)
}
console.info('keyMap', keyMap, json)
let tmpdata = [] // 用來儲存轉換好的json
json.map((v, i) => keyMap.map((k, j) => Object.assign({}, {
v: v[k],
position: (j > 25 ? this.getCharCol(j) : String.fromCharCode(65 + j)) + (i + 1)
}))).reduce((prev, next) => prev.concat(next)).forEach(function (v) {
tmpdata[v.position] = {
v: v.v
}
})
let outputPos = Object.keys(tmpdata) // 設定區域,比如表格從A1到D10
let tmpWB = {
SheetNames: ['mySheet'], // 儲存的表標題
Sheets: {
'mySheet': Object.assign({},
tmpdata, // 內容
{
'!ref': outputPos[0] + ':' + outputPos[outputPos.length - 1] // 設定填充區域
})
}
}
let tmpDown = new Blob([this.s2ab(XLSX.write(tmpWB,
{bookType: (type === undefined ? 'xlsx' : type), bookSST: false, type: 'binary'} // 這裡的資料是用來定義匯出的格式型別
))], {
type: ''
}) // 建立二進位制物件寫入轉換好的位元組流
var href = URL.createObjectURL(tmpDown) // 建立物件超連結
this.outFile.download = downName + '.xlsx' // 下載名稱
this.outFile.href = href // 繫結a標籤
this.outFile.click() // 模擬點選實現下載
setTimeout(function () { // 延時釋放
URL.revokeObjectURL(tmpDown) // 用URL.revokeObjectURL()來釋放這個object URL
}, 100)
},
/* 解析資料 */
analyzeData: function (data) { // 此處可以解析匯入資料
return data
},
/* 處理匯入資料 */
dealFile: function (data) { // 處理匯入的資料
console.log(data)
this.imFile.value = ''
this.fullscreenLoading = false
if (data.length <= 0) {
this.errorDialog = true
this.errorMsg = '請匯入正確資訊'
} else {
this.listClone = data
}
},
s2ab: function (s) { // 字串轉字元流
var buf = new ArrayBuffer(s.length)
var view = new Uint8Array(buf)
for (var i = 0; i !== s.length; ++i) {
view[i] = s.charCodeAt(i) & 0xFF
}
return buf
},
getCharCol: function (n) { // 將指定的自然數轉換為26進製表示。對映關係：[0-25] -> [A-Z]。
let s = ''
let m = 0
while (n > 0) {
m = n % 26 + 1
s = String.fromCharCode(m + 64) + s
n = (n - m) / 26
}
return s
},
fixdata: function (data) { // 檔案流轉BinaryString
var o = ''
var l = 0
var w = 10240
for (; l < data.byteLength / w; ++l) {
o += String.fromCharCode.apply(null, new Uint8Array(data.slice(l * w, l * w + w)))
}
o += String.fromCharCode.apply(null, new Uint8Array(data.slice(l * w)))
return o
},
handleClose(done) {
if (this.loading) {
return;
}
this.$confirm('確定要提交表單嗎？')
.then(_ => {
this.loading = true;
this.timer = setTimeout(() => {
done();
// 動畫關閉需要一定的時間
setTimeout(() => {
this.loading = false;
}, 10);
}, 10);
})
.catch(_ => {
});
},
}
}
</script>
- 匯出表格
- 列表展示