how to connect VSTS Azure Devops using rest api in java? i am not getting any documentation in java for this [closed]

Question

I need to connect VSTS Server using rest API in java. i have been through the documentation provided by Microsoft, but its for c# i need sample java programme for java, is there any jar released by Microsoft for VSTS, as i cannot find any jar related to this. Using c# i am able to connect with Vsts but i want some sample code for java.

sample code i have used in c# is :

public static async void GetProjects()
{
try
{
    var personalaccesstoken = "PAT_FROM_WEBSITE";

    using (HttpClient client = new HttpClient())
    {
        client.DefaultRequestHeaders.Accept.Add(
            new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
            Convert.ToBase64String(
                System.Text.ASCIIEncoding.ASCII.GetBytes(
                    string.Format("{0}:{1}", "", personalaccesstoken))));

        using (HttpResponseMessage response = await client.GetAsync(
                    "https://dev.azure.com/{organization}/_apis/projects"))
        {
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();
            Console.WriteLine(responseBody);
        }
    }
}
catch (Exception ex)
{
    Console.WriteLine(ex.ToString());
}
}

Stack Overflow is not a service that writes code for you in your language of choice. — Daniel Mann
daniel I have already provided code in the previous post, I have used in java to connect but getting connection refused — Rajesh Bhardwaj
@RajeshBhardwaj if you have a code sample you have tried then you should add it to your question, as well as an extract of the stack trace with the exact error you're facing. Then you will have higher chances of receiving a quality response — Nicolás Carrasco-Stevenson

Shamrai Aleksander Shamrai Aleksander · Accepted Answer · 2019-03-07T15:53:04

This is my first java experience ))

Try that to get work item:

package com.restapi.sample;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;
import java.util.Scanner;

import org.apache.commons.codec.binary.Base64;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

public class ResApiMain {

    static String ServiceUrl = "https://dev.azure.com/<your_org>/";
    static String TeamProjectName = "your_team_project_name";
    static String UrlEndGetWorkItemById = "/_apis/wit/workitems/";
    static Integer WorkItemId = 1208;
    static String PAT = "your_pat";

    public static void main(String[] args) {

        try {

            String AuthStr = ":" + PAT;
            Base64 base64 = new Base64();

            String encodedPAT = new String(base64.encode(AuthStr.getBytes()));

            URL url = new URL(ServiceUrl + TeamProjectName + UrlEndGetWorkItemById + WorkItemId.toString());
            HttpURLConnection con = (HttpURLConnection) url.openConnection();

            con.setRequestProperty("Authorization", "Basic " + encodedPAT);
            System.out.println("URL - " + url.toString());
            System.out.println("PAT - " + encodedPAT);
            con.setRequestMethod("GET");

            int status = con.getResponseCode();

            if (status == 200){
                String responseBody;
                try (Scanner scanner = new Scanner(con.getInputStream())) {
                    responseBody = scanner.useDelimiter("\\A").next();
                    System.out.println(responseBody);
                }

                try {
                    Object obj = new JSONParser().parse(responseBody);
                    JSONObject jo = (JSONObject) obj;

                    String WIID = (String) jo.get("id").toString();
                    Map<String, String> fields = (Map<String, String>) jo.get("fields");
                    System.out.println("WorkItemId - " + WIID);
                    System.out.println("WorkItemTitle - " + fields.get("System.Title"));
                } catch (ParseException e) {
                // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }           

            con.disconnect();

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

Additional jars:

to work with json http://www.java2s.com/Code/Jar/j/Downloadjsonsimple111jar.htm
to encode with base64: http://commons.apache.org/proper/commons-codec/download_codec.cgi

Samples to work with requests:

Check the url generated in the eclipse console:

how to connect VSTS Azure Devops using rest api in java? i am not getting any documentation in java for this [closed]

1 Answers