I did code by referring to this link. But getting error
https://www.c-sharpcorner.com/article/excel-file-export-in-angular-using-service/
This is my JSON file
I have searched in many websites but not able to find Excel File export from JSON File. Can anyone do help to resolve this?
**This the code for convert JSON to CSV file, Hope it will work for you**
DownloadJsonData(JSONData, FileTitle, ShowLabel) {
//If JSONData is not an object then JSON.parse will parse the JSON string in an Object
var arrData = typeof JSONData != 'object' ? JSON.parse(JSONData) : JSONData;
var CSV = '';
//This condition will generate the Label/Header
if (ShowLabel) {
var row = "";
//This loop will extract the label from 1st index of on array
for (var index in arrData[0]) {
//Now convert each value to string and comma-seprated
row += index + ',';
}
row = row.slice(0, -1);
//append Label row with line break
CSV += row + '\r\n';
}
//1st loop is to extract each row
for (var i = 0; i < arrData.length; i++) {
var row = "";
//2nd loop will extract each column and convert it in string comma-seprated
for (var index in arrData[i]) {
row += '"' + arrData[i][index] + '",';
}
row.slice(0, row.length - 1);
//add a line break after each row
CSV += row + '\r\n';
}
if (CSV == '') {
alert("Invalid data");
return;
}
//Generate a file name
var filename = FileTitle + (new Date());
var blob = new Blob([CSV], {
type: 'text/csv;charset=utf-8;'
});
if (navigator.msSaveBlob) { // IE 10+
navigator.msSaveBlob(blob, filename);
} else {
var link = document.createElement("a");
if (link.download !== undefined) { // feature detection
// Browsers that support HTML5 download attribute
var url = URL.createObjectURL(blob);
link.setAttribute("href", url);
link.style = "visibility:hidden";
link.download = filename + ".csv";
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
}
}
https://stackblitz.com/edit/angular6-export-xlsx?file=src%2Fapp%2Fservices%2Fexcel.service.ts
Refer to the above link and it will help you.
app.component.ts
import { Component } from '@angular/core';
import {ExcelService} from './services/excel.service';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
name = 'Angular 6';
data: any = [{
eid: 'e101',
ename: 'ravi',
esal: 1000
},
{
eid: 'e102',
ename: 'ram',
esal: 2000
},
{
eid: 'e103',
ename: 'rajesh',
esal: 3000
}];
constructor(private excelService:ExcelService){
}
exportAsXLSX():void {
this.excelService.exportAsExcelFile(this.data, 'sample');
}
}
excel.service.ts
import { Injectable } from '@angular/core';
import * as FileSaver from 'file-saver';
import * as XLSX from 'xlsx';
const EXCEL_TYPE = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8';
const EXCEL_EXTENSION = '.xlsx';
@Injectable()
export class ExcelService {
constructor() { }
public exportAsExcelFile(json: any[], excelFileName: string): void {
const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(json);
console.log('worksheet',worksheet);
const workbook: XLSX.WorkBook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' });
//const excelBuffer: any = XLSX.write(workbook, { bookType: 'xlsx', type: 'buffer' });
this.saveAsExcelFile(excelBuffer, excelFileName);
}
private saveAsExcelFile(buffer: any, fileName: string): void {
const data: Blob = new Blob([buffer], {
type: EXCEL_TYPE
});
FileSaver.saveAs(data, fileName + '_export_' + new Date().getTime() + EXCEL_EXTENSION);
}
}
