Here is my first test with XML-RPC 3.1.3
- Server is Java XmlRpcServlet.
- Client is a simple Java client
The example come from Apache http://ws.apache.org/xmlrpc/server.html

1. Create a new Project in Eclipse

for example in Eclipse Helios click File->New->Dynamic Web Project
Project name: xmlrpctest
Target runtime is Apache Tomcat v6.0
Click Finish

2. Download the software

From page http://ws.apache.org/xmlrpc/download.html click distribution directory and choice a mirror which apache suggest
exm http://apache.myamplifiers.com//ws/xmlrpc/
Choice apache-xmlrpc-current-bin.zip. The current version is XML-RPC 3.1.3

3. Copy lib files

Unpack the file apache-xmlrpc-current-bin.zip
copy all following files to the lib directory of project xmlrpctest,
which you can find it in workspace directory of Eclipse

 Directory of C:\Java\ws\xmlrpctest\WebContent\WEB-INF\lib

12/10/2010  09:47 AM    <DIR>          .
12/10/2010  09:47 AM    <DIR>          ..
09/11/2009  02:43 PM            52,915 commons-logging-1.1.jar
09/11/2009  02:43 PM            34,407 ws-commons-util-1.0.2.jar
02/06/2010  05:13 PM            58,573 xmlrpc-client-3.1.3.jar
02/06/2010  05:12 PM           109,131 xmlrpc-common-3.1.3.jar
02/06/2010  05:14 PM            81,555 xmlrpc-server-3.1.3.jar

in Eclipse right click the project xmlrpctest->Refresh or press F5.
you will see the 5 jar files in xmlrpctest.WebContent.Web-INF.lib
and in xmlrpctest.Java Resources src.Web App Libraries

Eclipse Project Explorer

4. Create class Calculator

Create package: org.apache.xmlrpc.demo
-Righ click project xmlrpctest->New->Package
-Dialog New Java Package->name: org.apache.xmlrpc.demo
-Finish

Create class Calculator
-Right click package org.apache.xmlrpc.demo->New->Class
-Dialog New Java Class->name: org.apache.xmlrpc.demo
-Finish

Source of Calculator.java:

 package org.apache.xmlrpc.demo;
    public class Calculator {
                public int add(int i1, int i2) {
                        return i1 + i2;
                }
                public int subtract(int i1, int i2) {
                        return i1 - i2;
                }
    }

5. Create properties file XmlRpcServlet.properties

The property file must be called XmlRpcServlet.properties, and it must be located in the package org.apache.xmlrpc.webserver

Create package: org.apache.xmlrpc.webserver
-Righ click project xmlrpctest->New->Package
-Dialog New Java Package
package name: org.apache.xmlrpc.webserver
-Finish

Create file XmlRpcServlet.properties
-Right click src->New->Other..->File->Next
-File name: XmlRpcServlet.properties
-Finish

File XmlRpcServlet.properties:

Calculator=org.apache.xmlrpc.demo.Calculator

6. Edit file web.xml

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>xmlrpctest_run</display-name>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
	<servlet>
		<servlet-name>XmlRpcServlet</servlet-name>
		<servlet-class>org.apache.xmlrpc.webserver.XmlRpcServlet</servlet-class>
		<init-param>
			<param-name>enabledForExtensions</param-name>
			<param-value>true</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>XmlRpcServlet</servlet-name>
		<url-pattern>/xmlrpc</url-pattern>
	</servlet-mapping>
</web-app>

7. Create a client program

Right click package org.apache.xml.rpc.demo->New Class
Class name: SimpleClient

SimpleClient.java

package org.apache.xmlrpc.demo;

import java.net.URL;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;

public class SimpleClient {

	public SimpleClient() {
		try {
			System.out.println("Try to add 2 + 3 via XML-RPC...");
			XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
			config.setServerURL(new URL(
					"http://127.0.0.1:8080/xmlrpctest/xmlrpc"));
			XmlRpcClient client = new XmlRpcClient();
			client.setConfig(config);
			Object[] params = new Object[] { new Integer(2), new Integer(3) };
			Integer result = (Integer) client.execute("Calculator.add", params);
			System.out.println("The returned values is: " + result);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		new SimpleClient();
	}
}

8. Run Test

-Open server view Window->Show Views->Servers

-Add project xmltest to Tomcat Sever
.Right click Tomcat v6.0 at localhost"->Add and Remove..
.Choice/Add xmlrpctest
.Finish

-Start Tomcat Sever
.Right click Tomcat v6.0 at localhost->Start

-Run Simple Client
Right click SimpleClient.java->Run As->Java Application

Output in Console View:

Try to add 2 + 3 via XML-RPC...
The returned values is: 5