example XML-RPC client for Magento API

MagentoClient.java

import redstone.xmlrpc.XmlRpcClient;
import redstone.xmlrpc.XmlRpcException;
import redstone.xmlrpc.XmlRpcFault;
import java.net.MalformedURLException;
import java.util.HashMap;
import redstone.xmlrpc.XmlRpcArray;
import redstone.xmlrpc.XmlRpcStruct;

public class MagentoClient {

    private String serverUrl;
    private String apiUser;
    private String apiKey;
    private String sessionId;
    public XmlRpcClient client;

    public MagentoClient(String url, String user, String key) throws MalformedURLException {
        this.serverUrl = url;
        this.apiUser = user;
        this.apiKey = key;
        this.client = new XmlRpcClient(this.serverUrl, false);
    }

    public String login() throws XmlRpcFault {
        this.sessionId = (String) this.client.invoke("login", new Object[] {this.apiUser, this.apiKey});
        return this.sessionId;
    }

    public XmlRpcArray orderList(HashMap filters) throws XmlRpcException, XmlRpcFault {
        Object [] params = this.createParams("sales_order.list", filters);
        XmlRpcArray orders = (XmlRpcArray) this.client.invoke("call", params);
        return orders;
    }

    public XmlRpcStruct orderInfo(String incrementId) throws XmlRpcException, XmlRpcFault {
        Object [] params = this.createParams("sales_order.info", incrementId);
        XmlRpcStruct order = (XmlRpcStruct) this.client.invoke("call", params);
        return order;
    }

    private Object[] createParams(String resourcePath, Object arguments) {
        Object [] params = new Object [] {this.sessionId, resourcePath, new Object [] {arguments}};
        return  params;
    }

    // Getters and Setters

}

MagentoClientTest.java

import java.net.MalformedURLException;
import java.util.HashMap;
import redstone.xmlrpc.XmlRpcArray;
import redstone.xmlrpc.XmlRpcFault;
import redstone.xmlrpc.XmlRpcStruct;

public class MagentoClientTest {

    public static void main(String[] args) {
        try {
            
            MagentoClient client = new MagentoClient("http://yourmagentohost/api/xmlrpc", "apiUser", "apiKey");
            System.out.println("Session id is " + client.login());
            
            HashMap from = new HashMap();
            from.put("from", "2010");
            HashMap filters = new HashMap();
            filters.put("created_at", from);

            XmlRpcArray orders = client.orderList(filters);
            System.out.println("Latest orders are " + orders.size());

            if (orders.size() > 0) {
                XmlRpcStruct firstOrder = orders.getStruct(0);
                String incrementId = firstOrder.getString("increment_id");
                XmlRpcStruct orderInfo = client.orderInfo(incrementId);
                System.out.println("Info for Order # " + incrementId);
                System.out.println(orderInfo);
            }
            
            
        } catch (MalformedURLException ex) {
            System.out.println(ex.getMessage());
        }
        catch (XmlRpcFault ex) {
            System.out.println(ex.getMessage());
        }

    }

}