Java REST client API for Android [closed]

Question

My server application exposes a RESTful web service using JAX-RS (Jersey Implementation). What is the best way to invoke this service (other than using Apache HttpClient)? I was wondering whether the REST Client APIs from Jersey, Restlet, RESTeasy and other frameworks work on Android.

Thanks, Theo

There's a RESTlet edition for Android. If your server code is based on Jersey so far, there won't be much reusable code. — b_erb
Googling seems to throw-up plenty of REST clients for android as well as tutorials on writing your own.... — Martijn Verburg
@Martijn Verburg Thanks for your comment, but Googling is not the answer to my question. Of course I could build my own using java.net.URL or Apache HttpClient, but I was looking for the best (most convenient) way. E.g. on Android, I would favor Apache HttpClient over java.net.URL for several reasons. And when you have a JAX-RS web service, maybe it's better if you use a client that is also JAX-RS aware saving you from writing boilerplate code and providing better abstractions. — Theo
You might wanna investigate github.com/square/retrofit. It's still a snapshot release, but it looks pretty slick: github.com/square/retrofit/blob/master/samples/github-client/… — Matthew

Le Duc Duy Le Duc Duy · Accepted Answer · 2012-04-18T09:46:28

Resteasy-mobile is a perfect solution.

It's basically full blown resteasy (which has client framework) but uses Apache HTTP Client rather than HttpURLConnection (which doesn't exist on android)

Here is more information about usage (http://docs.jboss.org/resteasy/docs/2.3.1.GA//userguide/html_single/index.html#RESTEasy_Client_Framework)

Here is for the maven

    <dependency>
        <groupId>org.jboss.resteasy.mobile</groupId>
        <artifactId>resteasy-mobile</artifactId>
        <version>1.0.0</version>
    </dependency>

A little sample code on android side

    public class RestServices {
    static RegisterSVC registerSVC;
    static PushSVC pushSVC;
    static TrackerSVC trackerSVC;

    RestServices() {
        RegisterBuiltin.register(ResteasyProviderFactory.getInstance());
    }

    public static RegisterSVC getRegisterSVC() {
        return ProxyFactory.create(RegisterSVC.class,"http://143.248.194.236:8080/notification");

    }

    public static PushSVC getPushSVC() {
        return ProxyFactory.create(PushSVC.class,"http://143.248.194.236:8080/notification");
    }

    public static TrackerSVC getTrackerSVC() {
        return ProxyFactory.create(TrackerSVC.class,"http://143.248.194.236:8080/notification");
    }
}

JAX-RS service definition (PushSVC.java) on both android and server side

@Path("/mobile")
public interface PushSVC {
    /*
    Sample
    curl --data '{"collapseKey":"asdf","contentList":{"aaaa":"you","ssss":"you2"}}' -X POST -H 'Content-type:application/json' -v http://localhost:8080/notification/mobile/11111/send
     */
    @POST
    @Path("/{uuid}/send")
    @Consumes(MediaType.APPLICATION_JSON)
    String sendPush( MessageVO message, @PathParam("uuid") String uuid);

}

Model MessageVO definition

public class MessageVO {
    String collapseKey;
    HashMap<String, String> contentList;

    public MessageVO() {
    }

    public MessageVO(String collapseKey) {
        this.collapseKey = collapseKey;
        contentList = new HashMap<String, String>();
    }

    public void put(String key, String value)
    {
        this.contentList.put(key,value);
    }

    public String getCollapseKey() {
        return collapseKey;
    }

    public HashMap<String, String> getContentList() {
        return contentList;
    }
}

This is method invocation on android

public class Broadcast extends AsyncTask<Context,Void,Void>
{

    @Override
    protected Void doInBackground(Context... contexts) {
        MessageVO message = new MessageVO("0");
        message.put("tickerText","Ticker ne` :D");
        message.put("contentTitle","Title ne` :D");
        message.put("contentText","Content ne` :D");
        RestServices.getPushSVC().sendPush(message,TrackInstallation.id(contexts[0]).toString());
        return null;
    }
}

This is pretty simple and all written codes are reusable, boilerplate code is near to non-existence

Hope this help everybody.

Java REST client API for Android [closed]

5 Answers