Jersey Client Test

ClientTest.java

import java.util.Map;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.core.util.MultivaluedMapImpl;

/**
 * Tests the use of Jersey Client to call a service end-point and marshal the JSON result to an object.  
 * 
 * Outputs something like:
 * <pre>
 * {
 *   url: http://httpbin.org/post?query=arg,
 *   origin: 80.231.216.11,
 *   args: {query=arg},
 *   headers: {Content-Length=11, Connection=keep-alive, Accept=text/html, image/gif, image/jpeg, *; q=.2, *\/*; q=.2, User-Agent=Java/1.6.0_33, Host=httpbin.org, Content-Type=application/x-www-form-urlencoded},
 *   form: {Hello=World}
 *   files: {}
 * }
 * </pre>
 * 
 * @author cpilsworth
 */
@JsonIgnoreProperties(ignoreUnknown=true)
public class ClientTest {

	private final String url;
	private final Map<String, String> args;
	private final Map<String, String> headers;	
	private final Map<String, String> form;
	private final Map<String, String> files;
	private final String origin;

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		Client c = Client.create();
		WebResource r = c.resource("http://httpbin.org/post?query=arg");
		ClientTest response = r.type(MediaType.APPLICATION_FORM_URLENCODED_TYPE).post(ClientTest.class, formParams());
		
		System.out.println(response);
	}

	/**
	 * You can use getters/setters or alternatively inject properties into constructors (like so) allowing for immutable objects.  
	 * @param url
	 * @param origin
	 * @param args
	 * @param headers
	 * @param form
	 * @param files
	 */
	@JsonCreator
	public ClientTest(@JsonProperty("url") String url, @JsonProperty("origin") String origin, @JsonProperty("args") Map<String, String> args,
			          @JsonProperty("headers") Map<String, String> headers, @JsonProperty("form") Map<String, String> form, 
			          @JsonProperty("files") Map<String, String> files) {		
		this.url = url;
		this.origin = origin;
		this.args = args;
		this.headers = headers;
		this.form = form;
		this.files = files;
	}
		
	private static MultivaluedMap<String, String> formParams() {
		MultivaluedMap<String,String> params = new MultivaluedMapImpl();
		params.add("Hello", "World");
		return params;
	}
	
	public String toString() {
		return new StringBuilder()
			.append("{\n url: ").append(url)
			.append(",\n origin: ").append(origin)
			.append(",\n args: ").append(args)
			.append(",\n headers: ").append(headers)
			.append(",\n form: ").append(form)
			.append(",\n files: ").append(files)
			.append("\n}")
			.toString();
	}

}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>uk.co.diffa.services</groupId>
	<artifactId>ws-client</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>WSClient</name>
	<description>Web Services Client using Jersey</description>

	<dependencies>

		<dependency>
			<groupId>com.sun.jersey</groupId>
			<artifactId>jersey-client</artifactId>
			<version>1.13</version>
		</dependency>
	 
		<dependency>
			<groupId>com.fasterxml.jackson.jaxrs</groupId>
			<artifactId>jackson-jaxrs-json-provider</artifactId>
			<version>2.0.5</version> 
		</dependency>

		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.0.5</version>
		</dependency>
 
	</dependencies>

</project>