My team and I are working on trying to find best Java client to consume Hal REST services. I was trying HalBuilder and took me a time to figure a few tweaks to make the simple example describe in the website to work. Perhaps, I was doing something wrong, but just in case someone is also stuck on that, here's the code:
Maven Dependencies:
<dependency> <groupId>com.theoryinpractise</groupId> <artifactId>halbuilder-api</artifactId> <version>2.2.1</version> </dependency> <dependency> <groupId>com.theoryinpractise</groupId> <artifactId>halbuilder-core</artifactId> <version>3.1.3</version> </dependency> <dependency> <groupId>com.theoryinpractise</groupId> <artifactId>halbuilder-json</artifactId> <version>3.1.3</version> </dependency> <dependency> <groupId>com.theoryinpractise</groupId> <artifactId>halbuilder-standard</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>com.ning</groupId> <artifactId>async-http-client</artifactId> <version>1.8.9</version> </dependency>
Java code:
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.concurrent.ExecutionException;
import com.ning.http.client.AsyncHttpClient;
import com.ning.http.client.Response;
import com.theoryinpractise.halbuilder.api.ReadableRepresentation;
import com.theoryinpractise.halbuilder.api.RepresentationFactory;
import com.theoryinpractise.halbuilder.json.JsonRepresentationFactory;
//http://gotohal.net/
public class TestHalBuilderAPI {
public static void main(String[] args) throws InterruptedException, ExecutionException, IOException {
RepresentationFactory representationFactory = new JsonRepresentationFactory();
representationFactory.withFlag(RepresentationFactory.PRETTY_PRINT);
AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
Response response = asyncHttpClient.prepareGet("http://gotohal.net/restbucks/api").execute().get();
InputStreamReader inputStreamReader = new InputStreamReader(response.getResponseBodyAsStream());
ReadableRepresentation representation = representationFactory.readRepresentation(inputStreamReader);
String ordersLinkUrl = representation.getLinkByRel("orders").getHref();
System.out.println(ordersLinkUrl);
asyncHttpClient.close();
}
}
