Using Unirest.io to make T1 API calls in java

hello_t1.java

package com.mycompany.app;

import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;
import com.mashape.unirest.http.exceptions.UnirestException;
import org.json.JSONArray;

import java.util.HashMap;
import java.util.Map;


/**
 * Hello, t1!
 * demonstrate using Unirest.io to  make some t1 API calls
 */
public class App {
    static String APIBASE = "https://api.mediamath.com/api/v2.0/";
    static String JSON = "application/vnd.mediamath.v1+json";

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

        // set the default accept header, this gets sent with each request.
        // our json return format is much nicer than XML!
        Unirest.setDefaultHeader("Accept", JSON);

        //query the current api version
        String versionBody = Unirest
                .get(APIBASE + "version")
                .asString().getBody();
        System.out.println(versionBody);


        Map<String, Object> loginFields = new HashMap<>();
        Map<String, String> env = System.getenv();
        //log in
        loginFields.put("user", env.getOrDefault("T1_API_USERNAME", ""));
        loginFields.put("password", env.getOrDefault("T1_API_PASSWORD", ""));
        loginFields.put("api_key", env.getOrDefault("T1_API_KEY", ""));

        HttpResponse<String> jsonResponse = Unirest
                .post(APIBASE + "login")
                .fields(loginFields)
                .asString();
        System.out.println(jsonResponse.getBody());

        //get the session; yay unirest persists cookies!
        jsonResponse = Unirest
                .get(APIBASE + "session")
                .asString();

        System.out.println(jsonResponse.getBody());

        // get the first 10 campaigns
        JSONArray result = Unirest
                .get(APIBASE + "campaigns")
                .queryString("page_limit", 10)
                .asJson().getBody().getObject().getJSONArray("data");

        for (int i = 0; i < result.length(); i++) {
            System.out.println(result.getJSONObject(i).getString("name"));
        }

    }

}