当前位置：网站首页>Reading and writing of nodejs excel (.Xlsx) files

Reading and writing of nodejs excel (.Xlsx) files

2022-06-25 05:05:00 【Yan Xiaoxi】

List of articles

data.xlsx

name	Age
Zhang San	18
Li Si	19
Wang Wu	20

get data


import xlsx from "xlsx";
const workBook = xlsx.readFile("./data.xlsx");

Get the first one execle Workbook table

let name = workBook.SheetNames[0]
let sheet = workBook.Sheets[name]

1. Output json Format

console.log(xlsx.utils.sheet_to_json(sheet));

[
	{
    
		 name :" Zhang San ",
		 Age :"18"	
	},
	{
    
		 name :" Li Si ",
		 Age :"19"
	},
	{
    
		 name :" Wang Wu ",
		 Age :"20"
	}
]

2. Output csv Format

console.log(xlsx.utils.sheet_to_csv(sheet));

 name , Age ,,,,,,,,,,,,,,,,,
 Zhang San ,18,,,,,,,,,,,,,,,,,
 Li Si ,19,,,,,,,,,,,,,,,,,
 Wang Wu ,20,,,,,,,,,,,,,,,,,

3. Output html Format

console.log(xlsx.utils.sheet_to_html(sheet));

<html><head><meta charset="utf-8"/><title>SheetJS Table Export</title></head><body><table><tr><td data-t="s" data-v=" name " id="sjs-A1"> name </td><td data-t="s" data-v=" Age " id="sjs-B1"> Age </td></tr><tr><td data-t="s" data-v=" Zhang San " id="sjs-A2"> Zhang San </td><td data-t="n" data-v="18" id="sjs-B2">18</td></tr><tr><td data-t="s" data-v=" Li Si " id="sjs-A3"> Li Si </td><td data-t="n" data-v="19" id="sjs-B3">19</td></tr><tr><td data-t="s" data-v=" Wang Wu " id="sjs-A4"> Wang Wu </td><td data-t="n" data-v="20" id="sjs-B4">20</td></tr></table></body></html>

Insert picture description here

4. Output formulae Format

console.log(xlsx.utils.sheet_to_formulae(sheet));

 [
  "A1=' name ", "B1=' Age ",
  "A2=' Zhang San ", 'B2=18',
  "A3=' Li Si ", 'B3=19',
  "A4=' Wang Wu ", 'B4=20'
]

Output to file

xlsx.writeFile(workBook, "./output.xlsx");

Insert picture description here

All the code

import xlsx from "xlsx";
const workBook = xlsx.readFile("./data.xlsx");
 
let name = workBook.SheetNames[0];
let sheet = workBook.Sheets[name];

console.log(xlsx.utils.sheet_to_json(sheet));

console.log(xlsx.utils.sheet_to_csv(sheet));

console.log(xlsx.utils.sheet_to_html(sheet));

console.log(xlsx.utils.sheet_to_formulae(sheet));
 
xlsx.writeFile(workBook, "./output.xlsx");

Method encapsulation

import xlsx from "xlsx";

/** *  analysis  excel  File into  json  object  * @param {string} filePath */
export function parseExcel(filePath) {
    
    //  Read the file and parse the workbook 
    const workBook = xlsx.readFile(filePath);
    //  Get the first table 
    let name = workBook.SheetNames[0];
    //  Analysis table 
    return xlsx.utils.sheet_to_json(workBook.Sheets[name]);
}

/** *  Parse object data into  excel * @param {Array} list * @param {string} sheetName  The name of the form ,  Default  Sheet1 */
export function writeExcel(list, sheetName = "Sheet1") {
    
    //  New workbook 
    const workBook = xlsx.utils.book_new();
    //  Add table 
    xlsx.utils.book_append_sheet(workBook, xlsx.utils.json_to_sheet(list), sheetName);
    //  The output file 
    xlsx.writeFile(workBook, filePath);
}