VUE exceljs 计算总和
时间: 2023-07-08 15:14:44 浏览: 178
你可以使用 ExcelJS 库来计算 Excel 表格中的总和。具体实现方法如下:
1. 引入 ExcelJS 库和 FileSaver.js 库。
```javascript
import ExcelJS from 'exceljs';
import FileSaver from 'file-saver';
```
2. 创建一个 ExcelJS 实例,并使用 `xlsx-populate` 库读取 Excel 模板文件。
```javascript
const workbook = new ExcelJS.Workbook();
const templateBuffer = await fetch('path/to/template.xlsx').then(res => res.arrayBuffer());
await workbook.xlsx.load(templateBuffer);
```
3. 获取要计算总和的单元格范围,并计算总和。
```javascript
const worksheet = workbook.getWorksheet('Sheet1');
const range = worksheet.getCell('A1').fullAddress + ':' + worksheet.getCell('A10').fullAddress;
const totalCell = worksheet.getCell('A11');
let sum = 0;
worksheet.eachRow({ includeEmpty: false }, function(row, rowNumber) {
sum += row.getCell('A').value;
});
totalCell.value = sum;
```
4. 将计算结果保存为 Excel 文件并下载到本地。
```javascript
const outputBuffer = await workbook.xlsx.writeBuffer();
const blob = new Blob([outputBuffer], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
FileSaver.saveAs(blob, 'output.xlsx');
```
完整代码示例:
```javascript
import ExcelJS from 'exceljs';
import FileSaver from 'file-saver';
async function calculateSum() {
const workbook = new ExcelJS.Workbook();
const templateBuffer = await fetch('path/to/template.xlsx').then(res => res.arrayBuffer());
await workbook.xlsx.load(templateBuffer);
const worksheet = workbook.getWorksheet('Sheet1');
const range = worksheet.getCell('A1').fullAddress + ':' + worksheet.getCell('A10').fullAddress;
const totalCell = worksheet.getCell('A11');
let sum = 0;
worksheet.eachRow({ includeEmpty: false }, function(row, rowNumber) {
sum += row.getCell('A').value;
});
totalCell.value = sum;
const outputBuffer = await workbook.xlsx.writeBuffer();
const blob = new Blob([outputBuffer], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
FileSaver.saveAs(blob, 'output.xlsx');
}
```
注意:以上示例代码仅适用于计算单列数据的总和,如果需要计算多列数据的总和或者其他复杂的计算方式,需要根据具体需求进行修改。
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