RESTful WS using Jersey: Client request.

Jersey provides a client library which includes functions to request a resource. This tutorial show some basic requests from a client.

  1. We continue with the same Java project of the previous tutorial. (you can also create a new Java project for this tutorial)
  2. Create a new Java package, name it my.second.rest.
  3. Create a new Java class under this package, name it ClientRequest.
  4. Edit the ClientRequest class as following: 

    package my.second.rest;
 
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriBuilder;
 
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
 
public class ClientRequest {
  public static void main(String[] args) {
    String HELLO_REST_URI = "http://localhost:8080/rest";
    ClientConfig config = new DefaultClientConfig();
    Client client = Client.create(config);  
 
    WebResource service = client.resource(UriBuilder.fromUri(HELLO_REST_URI).build());
 
    // Print service status
    System.out.println(service.path("hello").accept(MediaType.TEXT_PLAIN).get(ClientResponse.class).toString());
    // Print response as plain text
    System.out.println(service.path("hello").accept(MediaType.TEXT_PLAIN).get(String.class));
    // Print response as HTML
    System.out.println(service.path("hello").accept(MediaType.TEXT_HTML).get(String.class));
 
  }
}
  5. Select Run→Run As→Java Application.
  6. In the console, you'll get: 

    GET http://localhost:8080/rest/hello returned a response status of 200 OK
Hello world!
<html> <title>Hello world!</title><body><h1>Hello world!</body></h1></html>