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REST API integration via AJAX in a 3rd party tool and CORS

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REST API integration via AJAX in a 3rd party tool and CORS

Good evening,

I am integrating a Thingworx application that I already build up thanks to the academic license. The version of Thingworx that I am currently using is 5.2.0.437. I want to fetch some data that are collected by my thingworx application via a Raspberry Pi plug to a demonstrator that simulate an industrial factory. Every data are stored in a thing called thing0. This thing has several properties such as temperature, pressure, position of a stepper motor, etc.... I plan to fetch this data thanks to the service "QueryPropertyHistory" provided by this thing

My main problem is that I want to use the whole historical values already stored on my thingworx instance in a 3rd party tool: A web application that I have developed.

My requirement is to collect this data via a jQuery call using Ajax. I have read and analyzed every wiki’s topics about the REST API and every discussion dealing with the rest API or AJAX in thingworx community website. I couldn't find a proper answer to this problem.

My first question is: Does the server you provide to me support Cross-origin resource sharing?

  Given that I was able to use the REST API thanks to Hurl.it - Make HTTP requests in a perfect way, I assume that the reply to this question is a big YES but when I am doing the same with an ajax request using  the same variable I have this error

request status thingworx issue.JPG

The ajax request has a semantic without any error. the main problem must come from of a wrong configuration of my instance or an issue of my “HTTP post” request. In order to find a solution, the request is described below:

$.ajax({

    type: 'POST',

    url : 'http://iitt.cloud.thingworx.com/Thingworx/Things/Thing0/Services/QueryPropertyHistory',

    headers : {"appkey": "myappkey"},

    dataType:"json",

    crossDomain:true,

    contentType:"application/json;charset=utf-8",  

    success: function(data, textStatus, jqXHR)

    {

        alert(data+textStatus);

;    },

    error: function (jqXHR, textStatus, errorThrown)

    {

        alert("error");

    },

});

Please give me some lead or the right configuration to call a service from thingworx thanks to ajax. This point is a part of a widespread use of case. With solving it we can enhance the scalability of thingworx in an important way that will really matter and help a lot of users.

Happy new year and thanks you in advance for your support,

3 REPLIES 3

Re: REST API integration via AJAX in a 3rd party tool and CORS

Enabling the CORS filter in Tomcat config might fix your issue, please follow this link Enable CORS filter

Re: REST API integration via AJAX in a 3rd party tool and CORS

Yes, it's possible.  We have our own frontend that uses Thingworx as the backend, all interaction is through AJAX.  We just had to implement a CORS filter in Tomcat and everything works great.

Nick

Re: REST API integration via AJAX in a 3rd party tool and CORS

Hey giri,

I have the same problem as Sylvain Pace and followed the instruction you mentioned. I chose the minimal configuration and still have the same Problem. Do you have an idea what I did wrong?