Convert XML to JSON with NodeJS

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You can give simple-xml-to-json a try, it's pretty compact, and has no external dependencies. npmjs.com/package/simple-xml-to-json

9 Answers 9

I've used xml-js - npm to get the desired result.

First of all I've installed xml-js via npm install xml-js

Then used the below code to get the output in json format

var convert = require('xml-js'); var xml = require('fs').readFileSync('./testscenario.xml', 'utf8'); var result = convert.xml2json(xml, ); console.log(result); 

I tried the package in the accepted answer and I got this error: xml not formated well, but xml-js package worked perfectly. Thanks

You can use xml2json npm for converting your xml in to json. xml2json.

Step 1:- Install package in you project

npm install xml2json

Step 2:- You can use that package and convert your xml to json

let xmlParser = require('xml2json'); let xmlString = `   dt_EdgeCaseHome,dt_EdgeCaseRoute dt_EdgeCaseRoute  dt_EdgeCaseHome,dt_EdgeCaseSpectrum  dt_EdgeCaseRoute dt_EdgeCaseRoute  dt_EdgeCaseSpectrum  `; console.log('JSON output', xmlParser.toJson(xmlString)); 

Hope this might be helps to you.

It is deprecated and is not supported, It will not work on windows 11 for sure, It will fail on node-expat, they have posted solution on github/Readme.md Install Visual Studio C++ 2012 and run npm with the --msvs_version=2012 flag. but you cannot find or install visual studio c++ 2012 Microsoft doesn't support so cant use it anymore. npmjs.com/package/node-expat

If you are choosing between xml2json and xml-js then as far as I understand the differences are:

• xml-js has much less dependencies and uses sax-js for xml parsing.
• xml2json has more dependencies including node-expat that requires python and can be a headache during npm i. But node-expat claims to be ~3 times faster than sax-js.

Also be aware that xml2json and xml-js produce a bit different JSON. When I replaced xml2json with xml-js I had to add "._attributes" everywhere where values were in attributes.

In 6 simple ES6 lines:

xml2json = xml => < var el = xml.nodeType === 9 ? xml.documentElement : xml var h = h.content = Array.from(el.childNodes || []).filter(e => e.nodeType === 3).map(e => e.textContent).join('').trim() h.attributes = Array.from(el.attributes || []).filter(a => a).reduce((h, a) => < h[a.name] = a.value; return h >, <>) h.children = Array.from(el.childNodes || []).filter(e => e.nodeType === 1).map(c => h[c.nodeName] = xml2json(c)) return h > 

This loses mixed-content and element ordering (attribute ordering is at parser's choice anyways). Many disavow mixed-content anyways so.. Not a problem, just some users might care.

Cruftless allows you to 'annotate' the data structure you want to match, to specify how it should be bound to a JSON representation of that same data.

So, if you define your template like this:

Then by calling .fromXML on the object created from it, passing in the XML you want to parse, you will get:

Trying to use it but the documentation is a bit thin on the notation and I could find no other examples of using fromXML in this way there.

You can also try camaro

const < transform >= require('camaro') const xml = `   dt_EdgeCaseHome,dt_EdgeCaseRoute dt_EdgeCaseRoute  dt_EdgeCaseHome,dt_EdgeCaseSpectrum  dt_EdgeCaseRoute dt_EdgeCaseRoute  dt_EdgeCaseSpectrum   ` ;(async function () < const result = await transform(xml, < testSuites: [ '/TestScenario/TestSuite', < name: '@name', testCases: ['TestCaseName', < name: '@name', data: '.' >] > ] >) console.log(JSON.stringify(result, null, 2)) >)() 

var fs = require('fs'); var xml2json = require('xml2js'); var parser = new xml2json.Parser(); var i = 0; fs.readFile('note.xml', function(err,data)< parser.parseString(data, function(err, result)< console.log(result); >); >);

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if you have a XML file, then you can read that XML file using fs in nodejs and then you can use "xml2json" npm package.

 const parser = require('xml2json'); const fs = require("fs") fs.readFile(uploadedFilePath, function(err,data)< if(err) < return res.send(); > else < jsonfile = JSON.parse(parser.toJson(data,)); > >); 

To convert XML to JSON in Node.js, we'll use the xml2js library, a popular choice for parsing XML data. Install it by running:

npm install xml2js 

This library provides a simple API for converting XML to JSON and vice versa.

For demonstration purposes, let's create a sample XML file (input.xml) in your project directory:

    John Doe 29.99   Jane Smith 19.95   

Now, create a new file in your project directory and write the following code:

const fs = require('fs'); const xml2js = require('xml2js'); // Read the XML file const xml = fs.readFileSync('input.xml'); // Convert the XML to JSON xml2js.parseString(xml, < mergeAttrs: true >, (err, result) => < if (err) < throw err; >// The result is now a JavaScript object const json = JSON.stringify(result, null, 2); // Save the JSON to a file fs.writeFileSync('output.json', json); >);