HttpPost response 400 error

Ignition
1

I'm trying make a httpPost to get some information from another system. The problem is that i get a http response 400 that indicates that the body (post data) is not fomated correctly. The code looks like this:

Blockquote
url = "http://endpoint for deviations/get?fromDate="+str(formatedFromDate)+"&toDate="+str(formatedToDate)
body = {
"equipmentIds" : "[100000511]",
"statusIds": "[100]"
}
header = {
"Authorization": "Bearer "+token
}
deviations = system.net.httpPost(url,"application/json",body,10000,60000,"","",header,0,0)
Blockquote

The error that I get follow like this:
{u'traceId': '|7d3ea763-40c9dd92084bf386.', u'type': 'RFC 7231 - Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content', u'title': 'One or more validation errors occurred.', u'errors': {u'$': ['''' is an invalid start of a property name. Expected a '"'. Path: $ | LineNumber: 0 | BytePositionInLine: 1.']}, u'status': 400}

Have anyone experienced a similar problem? The error seems to indicate a problem with the start of the "property name". Is it a problem with the body that I've defined?

I've verified the call I'm trying to make using Swagger. There is nothing there indicating that this is not a correct postData body.

Thank full for any help that I could get
BR

2

You need to call system.util.jsonEncode on your body before you pass it to httpPost.

Or if you’re on Ignition 8.x you should use system.net.httpClient instead.

3

That did the trick! Thank you!
I’m on 8.4 on this gateway, so I will consider migrating the code to httpClient