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gd111-Visitor
1-Visitor
May 18, 2017
Solved

I want to retrive a data from Thingworx platform to java SDK. Can anyone please suggest me how to do it. Please do the needfull.

  • May 18, 2017
  • 3 replies
  • 4728 views

I want to retrive a data from Thingworx platform to java SDK. Can anyone please suggest me how to do it. Please do the needfull.

    Best answer by vr-6

    Hi,

    import java.io.BufferedReader;

    import java.io.DataOutputStream;

    import java.io.InputStreamReader;

    import java.net.HttpURLConnection;

    import java.net.URL;

    import javax.net.ssl.HttpsURLConnection;

    public class HttpURLConnectionExample {

        private final String USER_AGENT = "Mozilla/5.0";

        public static void main(String[] args) throws Exception {

            HttpURLConnectionExample http = new HttpURLConnectionExample();

            System.out.println("Testing 1 - Send Http GET request");

            http.sendGet();

        }

        // HTTP GET request

        private void sendGet() throws Exception {

            String url = "http://localhost:9090/Thingworx/Things/Thingname/Properties?appKey=9d60cdb1-3761-4c85-8fa9-3485b71e6f97";

            URL obj = new URL(url);

            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

            // optional default is GET

            con.setRequestMethod("GET");

            //add request header

            con.setRequestProperty("User-Agent", USER_AGENT);

                    con.setRequestProperty("Accept", "application/json");

            int responseCode = con.getResponseCode();

            System.out.println("\nSending 'GET' request to URL : " + url);

            System.out.println("Response Code : " + responseCode);

            BufferedReader in = new BufferedReader(

                    new InputStreamReader(con.getInputStream()));

            String inputLine;

            StringBuffer response = new StringBuffer();

            while ((inputLine = in.readLine()) != null) {

                response.append(inputLine);

            }

            in.close();

            //print result

            System.out.println(response.toString());

        }

    }

    You can use above code to print properties in java. Response will be in JSON format.

    3 replies

    P
    posipova20-Turquoise
    20-Turquoise
    May 18, 2017

    Depends on what your end goals are/what you are trying to achieve.

    There are multiple ways:

    • using REST API of the Plattform, pull data from the platform - PTC - helpcenter - it is very straightforward and can be tested with every Browser.
    • using PropertySetters in SDK; Edge helpcenter PTC
    • using services triggerd in the plattform sending data to the device (PUSH)
      V
      vr-61-Visitor
      1-Visitor
      May 18, 2017

      Hi,

      You can use GET method to retrieve current property value of thing

      /////////////

      OkHttpClient client = new OkHttpClient();

      Request request = new Request.Builder()

        .url("http://localhost:9090/Thingworx/Things/ThingName/Properties")

        .get()

        .addHeader("appKey", "8")

        .addHeader("content-type", "application/json")

        .addHeader("accept", "application/json")

        .addHeader("cache-control", "no-cache")

        .build();

      Response response = client.newCall(request).execute();

      //////////////

      To retrieve property history you need to use POST method

      ///////////////////

      OkHttpClient client = new OkHttpClient();

      MediaType mediaType = MediaType.parse("application/json");

      RequestBody body = RequestBody.create(mediaType, "{\n\t\"maxItems\": 500,\n\t\"startDate\":1495119100,\n\t\"endDate\":1495119875,\n\t\"oldestFirst\":true\n}"); // Start Date and End Date UNIX timeformat

      Request request = new Request.Builder()

        .url("http://localhost:9090/Thingworx/Things/ThingName/Services/QueryPropertyHistory?Content-Type=application%2Fjson")

        .post(body)

        .addHeader("appKey", "ccccccc")

        .addHeader("content-type", "application/json")

        .addHeader("accept", "application/json")

        .addHeader("cache-control", "no-cache")

        .build();

      Response response = client.newCall(request).execute();

      /////////////////////////////

      Replace appKey and ThingName

        G
        gd111-VisitorAuthor
        1-Visitor
        May 22, 2017

        Hi,

        Thank you for your response.

        I have tried with GET method. In browser i am getting the properties of the particular thing but when i am invoking URL in code , not able to retrive the properties. I need to print the properties in my java code. How can i get ?? Any idea?

        V
        vr-61-VisitorAnswer
        1-Visitor
        May 22, 2017

        Hi,

        import java.io.BufferedReader;

        import java.io.DataOutputStream;

        import java.io.InputStreamReader;

        import java.net.HttpURLConnection;

        import java.net.URL;

        import javax.net.ssl.HttpsURLConnection;

        public class HttpURLConnectionExample {

            private final String USER_AGENT = "Mozilla/5.0";

            public static void main(String[] args) throws Exception {

                HttpURLConnectionExample http = new HttpURLConnectionExample();

                System.out.println("Testing 1 - Send Http GET request");

                http.sendGet();

            }

            // HTTP GET request

            private void sendGet() throws Exception {

                String url = "http://localhost:9090/Thingworx/Things/Thingname/Properties?appKey=9d60cdb1-3761-4c85-8fa9-3485b71e6f97";

                URL obj = new URL(url);

                HttpURLConnection con = (HttpURLConnection) obj.openConnection();

                // optional default is GET

                con.setRequestMethod("GET");

                //add request header

                con.setRequestProperty("User-Agent", USER_AGENT);

                        con.setRequestProperty("Accept", "application/json");

                int responseCode = con.getResponseCode();

                System.out.println("\nSending 'GET' request to URL : " + url);

                System.out.println("Response Code : " + responseCode);

                BufferedReader in = new BufferedReader(

                        new InputStreamReader(con.getInputStream()));

                String inputLine;

                StringBuffer response = new StringBuffer();

                while ((inputLine = in.readLine()) != null) {

                    response.append(inputLine);

                }

                in.close();

                //print result

                System.out.println(response.toString());

            }

        }

        You can use above code to print properties in java. Response will be in JSON format.

          G
          gd111-VisitorAuthor
          1-Visitor
          May 24, 2017

          Hi,

          Thank you for your response.

          One more doubt i have, I have created a Mashup with one textbox and button. I will enter value in textbox and i will submit the button. I want get the entered value in JavaSDK. Any idea? please ASAP.

          Thank you

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