postJSON error with thingworx

LaurentGermain — Fri, 27 Sep 2024 14:35:39 GMT

Hi Team

I have an issue a with a PostJSON request.
I have tested succesfully the content below with PostMan.

When invoking this a POSTJSON request, seems it can not handle orrectrly the content data.

var c=[ { 'login':'temp', 'SensorData':[ { "Timestamp": 1727265323000, "Quantity": "Temperature", "Value": "19.2", "Unit": "°C", "DataType": "Decimal", "ValueOK": true } ] } ] ;

let params = { proxyScheme: "https", headers: { "Client": "xxx", "Branch": "xxx", "Api-Key": "xxx", "version": "3.0" }, url: "https://api.platform.twinzo.eu/v3/sensors/batch", content: c, }; // result: JSON let result = Resources["ContentLoaderFunctions"].PostJSON(params);

Any idea of why it fails ?

"Message": "sensorContract.array:\n\tCannot deserialize the current JSON object (e.g. {\"name\":\"value\"}) into type 'System.Collections.Generic.IEnumerable`1[Core.Contract.V3.Sensors.SensorBatchContract]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.\r\nTo fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.\r\nPath 'array', line 1, position 9.\n", "responseStatus": { "reasonPhrase": "Bad Request",

Re: postJSON error with thingworx

nmutter — Sat, 28 Sep 2024 16:42:10 GMT

could you try like this:

content: JSON.stringify(c)

TWX always has some special behavior with json-arrays, resulting in a wrapped array in a json object {array:[<originalarray>]}

Re: postJSON error with thingworx

LaurentGermain — Sat, 28 Sep 2024 16:51:59 GMT

Thx, unfortunately, it produces the same error.

Re: postJSON error with thingworx

LaurentGermain — Sat, 28 Sep 2024 17:17:44 GMT

Found a solution ( similar to https://community.ptc.com/t5/ThingWorx-Developers/API-call-PUT-JSON-content-array-instead-of-object/m-p/653352#M43453) :

Using PostText instead of PostJSON, and adding in the header:
contentType: "application/json"

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