adam bien's blog

In the following screencast:

...I posted a JSON document:

var message = """
    {"message":"hello,duke"}
""";    

...using a plain Java HttpClient:

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpRequest.BodyPublishers;
import java.net.http.HttpResponse.BodyHandlers;

var client = HttpClient.newHttpClient();

...to the following URI:

var uri = new URI("http://localhost:8080/crud/");

...and an application/json POST HTTP request.

var request = HttpRequest.newBuilder(uri).
            POST(BodyPublishers.ofString(message))
            .header("Content-type", "application/json").
            build();

The HTTP status code and the headers are available from the HttpResponse:

var response = client.send(request, BodyHandlers.discarding());   
assertEquals(201, response.statusCode());

var locationHeader = response.headers().firstValue("Location").get();
System.out.println(locationHeader); 
//output: http://localhost:8080/crud/1620925145168

The "mockend" used in the screencast is available from: github.com/adambien/mockend