ImportExcel.vue
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<template>
<div>
<input
ref="inputRef"
type="file"
v-show="false"
accept=".xlsx, .xls"
@change="handleInputClick"
/>
<div @click="handleUpload">
<slot></slot>
</div>
</div>
</template>
<script lang="ts">
import { defineComponent, ref, unref } from 'vue';
import * as XLSX from 'xlsx';
import { dateUtil } from '/@/utils/dateUtil';
import type { ExcelData } from './typing';
export default defineComponent({
name: 'ImportExcel',
props: {
// 日期时间格式。如果不提供或者提供空值，将返回原始Date对象
dateFormat: {
type: String,
},
// 时区调整。实验性功能，仅为了解决读取日期时间值有偏差的问题。目前仅提供了+08:00时区的偏差修正值
// https://github.com/SheetJS/sheetjs/issues/1470#issuecomment-501108554
timeZone: {
type: Number,
default: 8,
},
// 是否直接返回选中文件
isReturnFile: {
type: Boolean,
default: false,
},
},
emits: ['success', 'error', 'cancel'],
setup(props, { emit }) {
const inputRef = ref<HTMLInputElement | null>(null);
const loadingRef = ref<Boolean>(false);
const cancelRef = ref<Boolean>(true);
function shapeWorkSheel(sheet: XLSX.WorkSheet, range: XLSX.Range) {
let str = ' ',
char = 65,
customWorkSheet = {
t: 's',
v: str,
r: '<t> </t><phoneticPr fontId="1" type="noConversion"/>',
h: str,
w: str,
};
if (!sheet || !sheet['!ref']) return [];
let c = 0,
r = 1;
while (c < range.e.c + 1) {
while (r < range.e.r + 1) {
if (!sheet[String.fromCharCode(char) + r]) {
sheet[String.fromCharCode(char) + r] = customWorkSheet;
}
r++;
}
r = 1;
str += ' ';
customWorkSheet = {
t: 's',
v: str,
r: '<t> </t><phoneticPr fontId="1" type="noConversion"/>',
h: str,
w: str,
};
c++;
char++;
}
}
/**
* @description: 第一行作为头部
*/
function getHeaderRow(sheet: XLSX.WorkSheet) {
if (!sheet || !sheet['!ref']) return [];
const headers: string[] = [];
// A3:B7=>{s:{c:0, r:2}, e:{c:1, r:6}}
const range: XLSX.Range = XLSX.utils.decode_range(sheet['!ref']);
shapeWorkSheel(sheet, range);
const R = range.s.r;
/* start in the first row */
for (let 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;
}
/**
* @description: 获得excel数据
*/
function getExcelData(workbook: XLSX.WorkBook) {
const excelData: ExcelData[] = [];
const { dateFormat, timeZone } = props;
for (const sheetName of workbook.SheetNames) {
const worksheet = workbook.Sheets[sheetName];
const header: string[] = getHeaderRow(worksheet);
let results = XLSX.utils.sheet_to_json(worksheet, {
raw: true,
dateNF: dateFormat, //Not worked
}) as object[];
results = results.map((row: object) => {
for (let field in row) {
if (row[field] instanceof Date) {
if (timeZone === 8) {
row[field].setSeconds(row[field].getSeconds() + 43);
}
if (dateFormat) {
row[field] = dateUtil(row[field]).format(dateFormat);
}
}
}
return row;
});
excelData.push({
header,
results,
meta: {
sheetName,
},
});
}
return excelData;
}
/**
* @description: 读取excel数据
*/
function readerData(rawFile: File) {
loadingRef.value = true;
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = async (e) => {
try {
const data = e.target && e.target.result;
const workbook = XLSX.read(data, { type: 'array', cellDates: true });
// console.log(workbook);
/* DO SOMETHING WITH workbook HERE */
const excelData = getExcelData(workbook);
emit('success', excelData);
resolve('');
} catch (error) {
reject(error);
emit('error');
} finally {
loadingRef.value = false;
}
};
reader.readAsArrayBuffer(rawFile);
});
}
async function upload(rawFile: File) {
const inputRefDom = unref(inputRef);
if (inputRefDom) {
// fix can't select the same excel
inputRefDom.value = '';
}
await readerData(rawFile);
}
/**
* @description: 触发选择文件管理器
*/
function handleInputClick(e: Event) {
const target = e && (e.target as HTMLInputElement);
const files = target?.files;
const rawFile = files && files[0]; // only setting files[0]
target.value = '';
if (!rawFile) return;
cancelRef.value = false;
if (props.isReturnFile) {
emit('success', rawFile);
return;
}
upload(rawFile);
}
/**
* @description 文件选择器关闭后,判断取消状态
*/
function handleFocusChange() {
const timeId = setInterval(() => {
if (cancelRef.value === true) {
emit('cancel');
}
clearInterval(timeId);
window.removeEventListener('focus', handleFocusChange);
}, 1000);
}
/**
* @description: 点击上传按钮
*/
function handleUpload() {
const inputRefDom = unref(inputRef);
if (inputRefDom) {
cancelRef.value = true;
inputRefDom.click();
window.addEventListener('focus', handleFocusChange);
}
}
return { handleUpload, handleInputClick, inputRef };
},
});
</script>