RESTClient.java

/**
 * Copyright (C) 2010 Talend Inc. - www.talend.com
 */
package client;

import java.util.Map;
import java.util.Properties;

import javax.xml.namespace.QName;
import javax.xml.ws.Service;
import javax.xml.ws.soap.SOAPBinding;

import org.apache.cxf.jaxrs.client.JAXRSClientFactory;

import common.codefirst.HelloWorld;
import common.codefirst.User;
import common.codefirst.UserImpl;

/**
 * Example showing JAX-RS and JAX-WS proxies making calls to JAX-RS and JAX-WS
 * services by relying on the same shared code making remote invocations.
 */
public final class RESTClient {

    private static final String PORT_PROPERTY = "http.port";
    private static final int DEFAULT_PORT_VALUE = 8080;

    private static final String HTTP_PORT;
    static {
        Properties props = new Properties();
        try {
            props.load(RESTClient.class.getResourceAsStream("/client.properties"));
        } catch (Exception ex) {
            throw new RuntimeException("client.properties resource is not available");
        }
        HTTP_PORT = props.getProperty(PORT_PROPERTY);
    }

    int port;

    public RESTClient() {
        this(getPort());
    }

    public RESTClient(int port) {
        this.port = port;
    }

    public void sayHelloRest() throws Exception {
        final String address = "http://localhost:" + port + "/services/rest-hello";

        System.out.println("Using CXF JAX-RS proxy to invoke on HelloWorld service");

        HelloWorld service = JAXRSClientFactory.create(address, HelloWorld.class);
        useHelloService(service, "Barry");
    }

    public void sayHelloSoap() throws Exception {
        final QName serviceName = new QName("http://hello.com", "HelloWorld");
        final QName portName = new QName("http://hello.com", "HelloWorldPort");
        final String address = "http://localhost:" + port + "/services/soap-hello";

        System.out.println("Using JAX-WS proxy to invoke on HelloWorld service");

        Service service = Service.create(serviceName);
        service.addPort(portName, SOAPBinding.SOAP11HTTP_BINDING, address);

        HelloWorld hw = service.getPort(HelloWorld.class);

        useHelloService(hw, "Fred");
    }

    private void useHelloService(HelloWorld service, String user) {

        System.out.println("Getting the list of existing users");
        printUsers(service.getUsers());

        System.out.println("Asking the service to add a new user " + user + " and also say hi");

        System.out.println(service.sayHi(user));
        System.out.println(service.sayHiToUser(new UserImpl(user)));

        System.out.println("Getting the list of existing users");
        Map<Integer, User> users = service.getUsers();
        printUsers(users);

        System.out.println("Echoing the list of existing users");
        printUsers(service.echoUsers(users));

    }

    private void printUsers(Map<Integer, User> users) {

        if (users.size() == 0) {
            System.out.println("No information about users is available");
        }

        for (Map.Entry<Integer, User> entry : users.entrySet()) {
            System.out.println(entry.getValue().getName());
        }
    }

    public static void main(String[] args) throws Exception {

        RESTClient client = new RESTClient();

        // uses CXF JAX-RS Proxy
        client.sayHelloRest();

        System.out.println();

        // uses JAX-WS Client
        client.sayHelloSoap();
    }

    private static int getPort() {
        try {
            return Integer.valueOf(HTTP_PORT);
        } catch (NumberFormatException ex) {
            // ignore
        }
        return DEFAULT_PORT_VALUE;
    }
}