Javascript - How to parse in Postman body response from XML format

Nats
September 19, 2024
35 views
3 votes
4 Answers

Using POST request in Postmat I received a body response as XML data like this.

    <?xml version='1.0' encoding='UTF-8'?>
    <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
        <S:Body>
            <ns2:getAuthenticationTokenResponse xmlns:ns2="http://some_url.com" xmlns:ns3="http://some_url.com">
                <return>111222333</return>
            </ns2:getAuthenticationTokenResponse>
        </S:Body>
</S:Envelope>

And I need to get somehow value 111222333 as a collection variable. And I’m lost with solution since I have no experience with JS before. Please provide me with some solution.

Answers

Chosen as BEST ANSWER

I'm really appreciate for all who give me help with this topic. Final version of solution is looks like this:

> const xml2js = require('xml2js'); console.log(xml2js);
> 
> // taking XML response  
> const responseBody = pm.response.text();
> console.log(responseBody);
> 
> //parsing XML body 
> xml2js.parseString(responseBody, { explicitArray:
> false }, (err, result) => {
>     if (err) {
>         console.error("Error parsing XML:", err);
>     } else {
>         //Taking Token
>         const tokenValue = result['S:Envelope']['S:Body']['ns2:getAuthenticationTokenResponse']['return'];
>         console.log(tokenValue);
> 
>         // Bringing Token to a collection variable
>         pm.collectionVariables.set("a_Token", tokenValue);
>         console.log("Extracted Token Value: ", tokenValue);
>     } });

(Edit)

- Delevin
- September 18, 2024 at 4:51 am
- 0 votes
0
maybe xml2js can resolve your question.
this is sample code:
```
const xml2js = require('xml2js');   
xml2js.parseString(pm.response.text(), function (err, result) {
    console.log(result);
});
```
Login or Signup to reply.

xml2js is available in the Postman sandbox and gives you a lot more control over the output.

You are basically converting the XML to a JavaScript Object.

For example…

// step 1 - parse XMLSoap response 
const xmlResponse = pm.response.json();

// step 2 - parse the XML test to JSON - so its easier to work with
let parseString = require('xml2js').parseString;
const stripPrefix = require('xml2js').processors.stripPrefix;

parseString(xmlResponse, {
    tagNameProcessors: [stripPrefix],
    ignoreAttrs: true,
    explicitArray: false,
}, function (err, jsonData) {
    // handle any errors in the XML
    if (err) {
        console.log(err);
    } else {
        // do something with the result
        console.log(jsonData.Envelope.Body.getAuthenticationTokenResponse.return); // 111222333
    }
});

It depends on how complex your XML is, but have a look here (scroll to the bottom) for all of the formatting options.

https://www.npmjs.com/package/xml2js