Handle XML attributes when converting XML to JSON using Node.JS xml2js

debugcn 投稿 Dev

thotheolh

I am trying to convert an XML file into JSON using xml2js on Node.JS.

When I hit an attribute, it will give a '_' and '$' characters as replacement.

I am fully aware that JSON does not have the concept of attributes that XML does.

How do I convert the following XML document:

<id>
  <name language="en">Bob</name>
  <name>Alice</name>
</id>

Into a JSON format something like:

{
    "id": {
        "name": [{
            "language": "en",
            "text": "bob"
        }, "alice"]
    }
}

My code in Node.JS is:

const fs = require('fs');
const util = require('util');
const json = require('json');
const xml2js = require('xml2js');

const xml = fs.readFileSync('./test.xml', 'utf-8', (err, data) => {
  if (err) throw err;  
});

const jsonStr = xml2js.parseString(xml, function (err, result) {
  if (err) throw err;
    console.log(util.inspect(JSON.parse(JSON.stringify(result)), { depth: null }));
});

The current output is:

{ id: { name: [ { _: 'Bob', '$': { language: 'en' } }, 'Alice' ] } }

Jerome Diaz

will output

{
  id: { name: [ { language: 'en', text: 'Bob' }, { text: 'Alice' } ] }
}

the code:

const fs = require('fs');
const util = require('util');
const json = require('json');
const xml2js = require('xml2js');

const xml = fs.readFileSync('./test.xml', 'utf-8', (err, data) => {
  if (err) throw err;  
});

const jsonStr = xml2js.parseString(xml, function (err, result) {

  const nameArray = result.id.name;

  const newNameArray = nameArray.map(nameValue => {
    let text = '';
    let attributes = {};
    if (typeof nameValue === 'string') {
      text = nameValue
    } else if (typeof nameValue === 'object') {
      text = nameValue['_']
      attributes = nameValue['$']
    }
    return {
      ...attributes,
      text
    }
  })

  const newResult = {
    id: {
      name: newNameArray
    }
  }

  if (err) throw err;
    console.log(util.inspect(JSON.parse(JSON.stringify(newResult)), { depth: null }));
});

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