創建和JSON

Question

下載.xls文件我有以下的代碼，這應該編碼JSON對象XLSX，然後下載：

this.data = { 
    foo: "xyz" 
} 
let json2xls = require('json2xls'); 
var data = json2xls(this.data); 

let blob = new Blob([data], { type: "binary" }); 
let a = angular.element("a"); 
a.attr("href", this.$window.URL.createObjectURL(blob)); 
a.attr("download", "myfile.xlsx"); 
a[0].click(); 

它確實創建和下載文件，但是Excel無法打開它。 我知道肯定下面的轉換方法的作品，因爲我可以發送this.data到服務器，使用fs.writeFile()保存它，然後下載此文件。

var data = json2xls(this.data); 

如何從JSON解析爲XLS，然後將其另存爲XLS在瀏覽器中？

Answer 1

這是可以做到的服務器端：

• 安裝exceljs

meteor npm install -s exceljs

• 然後你就可以生成該文件是這樣的：

import Excel from 'exceljs';

WebApp.connectHandlers.use('/your-download-url', function(req, res, next) { 
    // Use params to specify parameters for the xls generation process... 
    const params = req.url.split('/'); 
    // ... for example /your-download-url/your-user-id 
    // params[0] will be 'your-download-url' 
    const user = Meteor.users.findOne(params[1]); 

    const workbook = new Excel.stream.xlsx.WorkbookWriter({}); 
    workbook.created = new Date(); 
    workbook.modified = new Date(); 
    const sheet = workbook.addWorksheet('Your sheet name'); 

    res.writeHead(200, { 
    'Content-Disposition': `attachment;filename=${filename}`, 
    'Content-Type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 
    }); 
    workbook.stream.pipe(res); 

    const headers: [ 
     { header: 'Column 1', key: 'col1', width: 20 }, 
     { header: 'Column 2', key: 'col2', width: 15 }, 
    ]; 
    sheet.columns = headers; 

    // User sheet.addRow(rowData) to add each row in your sheet. 

    workbook.commit(); 
});