mohammad2java / resteasy-client

HOW to make REST-CLIENT using RestEasy-Jboss framework(Proxy-Object-Approach)

step-1

create spring boot project using following dependency

	<dependency>
		<groupId>org.jboss.resteasy</groupId>
		<artifactId>resteasy-client</artifactId>
		<version>3.6.3.Final</version>
	</dependency>

step-2

create interface for proxy object and declare method using jaxrs api annotation.

Example:

public interface GorestClient {

@GET
@Path("/public/v2/users")
String userList();

@POST
@Path("/public/v2/users")
@Consumes("application/json")
void createUser(String user, @HeaderParam("Authorization") String token);

}

step-3

IMPL class to wrapp inteface

@Component("gorestClient")
public class GorestIntegrationImpl implements GorestClient {
	private GorestClient connector;
	private ObjectMapper mapper;

public GorestIntegrationImpl(@Value("${gorest.url}") String url) {
	super();
	ResteasyClient client = new ResteasyClientBuilder().build();
	client.register(AppLoggerFilter.class);  //added filter to logging request
	ResteasyWebTarget target = client.target(url);
	connector = target.proxy(GorestClient.class);
	mapper = new ObjectMapper();  //added mapper for object to json & json to object
}

step-4: inject this where you want to call GorestClient

logging request & response for all request

	   public class AppLoggerFilter implements ClientRequestFilter, ClientResponseFilter

more annotation example:

public interface SimpleClient
	{
	   @GET
	   @Path("basic")
	   @Produces("text/plain")
	   String getBasic();

	   @PUT
	   @Path("basic")
	   @Consumes("text/plain")
	   void putBasic(String body);

	   @GET
	   @Path("queryParam")
	   @Produces("text/plain")
	   String getQueryParam(@QueryParam("param")String param);

	   @GET
	   @Path("matrixParam")
	   @Produces("text/plain")
	   String getMatrixParam(@MatrixParam("param")String param);

	   @GET
	   @Path("uriParam/{param}")
	   @Produces("text/plain")
	   int getUriParam(@PathParam("param")int param); 
	   }

Here you can use all param annotation-

CookieParam	
FormParam	
HeaderParam	
MatrixParam	
PathParam	
QueryParam

list of alternative for this client libs/fw

https://square.github.io/retrofit/