Samples.java

import java.io.File;
import juno.http.FormBody;
import juno.http.HttpClient;
import juno.http.HttpRequest;
import juno.http.HttpResponse;
import juno.http.HttpUrl;
import juno.http.MultipartBody;
import juno.http.RequestBody;
import juno.http.convert.generic.FileResponseBodyConverter;

public class Samples {

    HttpClient client = HttpClient.getInstance()
            .setDebug(true);

    /*
    GET https://postman-echo.com/get HTTP/1.1
    */
    String get() throws Exception {
        HttpRequest request = HttpRequest.get(
                "https://postman-echo.com/get");

        return client.send(request, String.class);
    }

    /*
    POST https://postman-echo.com/post HTTP/1.1
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    Content-Length: 25

    id=7&name=bar&active=true
    */
    String post(int id, String name, boolean active) throws Exception {
        // application-www-www-form-urlencoded
        FormBody reqBody = new FormBody()
                .add("id", id)
                .add("name", name)
                .add("active", active)
        ;
        HttpRequest request = HttpRequest.post(
                "https://postman-echo.com/post", reqBody);

        return client.send(request, String.class);
    }
    
    /*
    POST https://postman-echo.com/post HTTP/1.1
    Content-Type: application/json; charset=UTF-8
    Content-Length: 44

    {"id": "7", "name": "bar", "active": "true"}

    */
    String request() throws Exception {
        String json = "{\"id\": \"7\", \"name\": \"bar\", \"active\": \"true\"}";
        
        // application/json
        RequestBody reqBody = RequestBody.create(
                "application/json", json);
        
        HttpRequest request = HttpRequest.post(
                "https://postman-echo.com/post", reqBody);

        return client.send(request, String.class);
    }
    
    /*
    POST https://postman-echo.com/post HTTP/1.1
    Content-Type: multipart/form-data; boundary=30704407372601
    Content-Length: 73152

    -- binary --

    */
    String upload(File file) throws Exception {
        // multipart/form-data
        MultipartBody reqBody = new MultipartBody()
                .addParam("name", "John Doe")
                .addFile("file", file)
        ;
        HttpRequest request = HttpRequest.post(
                "https://postman-echo.com/post", reqBody);

        return client.send(request, String.class);
    }

    /*
    GET https://github.com/jesusbmx/java-http-client/raw/master/dist/juno-http-client.jar HTTP/1.1
    */
    File download() throws Exception {
        HttpRequest request = HttpRequest.get(
                "https://github.com/jesusbmx/java-http-client/raw/master/dist/juno-http-client.jar")
                .setTimeoutMs(20000);

        FileResponseBodyConverter convert = new FileResponseBodyConverter()
                .setDir(System.getProperty("user.home") + "\\Downloads\\") //.setName("httpclient.jar")
        ;
        return client.send(request, convert);
        //return client.execute(request, File.class);
    }
    
    /*
    GET http://ip-api.com/json/24.48.0.1?fields=status%2Cmessage%2Cquery%2Ccountry%2Ccity&lang=en HTTP/1.1

    User-Agent: nombre-cliente
    */
    HttpResponse getIpLocation() throws Exception { 
      HttpUrl url = new HttpUrl("http://ip-api.com/")
        .addPath("json")
        .addPath("24.48.0.1")
        .addQueryParameter("fields", "status,message,query,country,city")
        .addQueryParameter("lang", "en")
      ;
      HttpRequest request = HttpRequest.get(url)
        .addHeader("User-Agent", "nombre-cliente")
      ;
      return client.send(request);
    }

    public static void main(String[] args) throws Exception {
        Samples samples = new Samples();
        System.out.println(samples.get());
        System.out.println(samples.post(7, "bar", true));
//        
//        File f = samples.download();
//        System.out.println(f);
//        System.out.println(samples.upload(f));
//        
        System.out.println(samples.request());
        System.out.println(samples.getIpLocation().readString());
    }
}