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Right click on JavaRsources:src and select New -> Package.
Name the package to org.apache.geronimo.samples.jaxrpc and click Finish.
Right click on the new package and select New -> Interface.
Name the interface as Converter and click Finish.

Add the following code to the Converter interface class:

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title	Converter.java
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package org.apache.geronimo.samples.jaxrpc;

import java.math.BigDecimal;
import java.rmi.Remote;
import java.rmi.RemoteException;

public interface Converter extends Remote{
	
	public BigDecimal dollarToRupees(BigDecimal dollars) throws RemoteException;
	public BigDecimal rupeesToEuro(BigDecimal rupees) throws RemoteException;

}

Right click on the new package and select New -> Class.
Name the class as ConverterImpl and click Finish.

Add the following code to the ConverterImpl class:

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title	ConverterImpl.java
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package org.apache.geronimo.samples.jaxrpc;

import java.math.BigDecimal;
import java.rmi.RemoteException;


public class ConverterImpl implements Converter{
	private BigDecimal rupeeRate = new BigDecimal("40.58");
	private BigDecimal euroRate = new BigDecimal("0.018368");

	public BigDecimal dollarToRupees(BigDecimal dollars) throws RemoteException {
		BigDecimal result = dollars.multiply(rupeeRate);
		return result.setScale(2, BigDecimal.ROUND_UP);
	}

	public BigDecimal rupeesToEuro(BigDecimal rupees) throws RemoteException {
		BigDecimal result = rupees.multiply(euroRate);
		return result.setScale(2, BigDecimal.ROUND_UP);
	}
}

...

Expand WEB-INF directory and add the following code to web.xml:

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title	web.xml
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<?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>jaxrpc-converter</display-name>
	<servlet>
		<display-name>JAX-RPC Converter Service</display-name>
		<servlet-name>JAXRPCConverterService</servlet-name>
		<servlet-class>
			org.apache.geronimo.samples.jaxrpc.ConverterImpl
		</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>JAXRPCConverterService</servlet-name>
		<url-pattern>/converter</url-pattern>
	</servlet-mapping>
</web-app>

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Right-click the WEB-INF directory and select New -> Other
Select WSDL from the Web Services category in the popup box.
Name the file as Converter.wsdl and click Finish.
Add the following code to Converter.wsdl:

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title	Converter.wsdl
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<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions xmlns="http://schemas.xmlsoap.org/wsdl/"
	xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
	xmlns:tns="http://org.apache.geronimo.samples.jaxrpc/"
	xmlns:x1="http://org.apache.geronimo.samples.jaxrpc/types"
	xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
	xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	targetNamespace="http://org.apache.geronimo.samples.jaxrpc/"
	name="Converter">

	<wsdl:message name="dollarToRupeesRequest">
		<wsdl:part name="in" type="xsd:decimal" />
	</wsdl:message>
	<wsdl:message name="dollarToRupeesResponse">
		<wsdl:part name="out" type="xsd:decimal" />
	</wsdl:message>

	<wsdl:message name="rupeesToEuroRequest">
		<wsdl:part name="in" type="xsd:decimal" />
	</wsdl:message>
	<wsdl:message name="rupeesToEuroResponse">
		<wsdl:part name="out" type="xsd:decimal" />
	</wsdl:message>

	<wsdl:portType name="Converter">
		<wsdl:operation name="dollarToRupees">
			<wsdl:input message="tns:dollarToRupeesRequest"
				name="dollarToRupeesRequest" />
			<wsdl:output message="tns:dollarToRupeesResponse"
				name="dollarToRupeesResponse" />
		</wsdl:operation>
		<wsdl:operation name="rupeesToEuro">
			<wsdl:input message="tns:rupeesToEuroRequest"
				name="rupeesToEuroRequest" />
			<wsdl:output message="tns:rupeesToEuroResponse"
				name="rupeesToEuroResponse" />
		</wsdl:operation>
	</wsdl:portType>

	<wsdl:binding name="ConverterSOAPBinding" type="tns:Converter">
		<soap:binding style="rpc"
			transport="http://schemas.xmlsoap.org/soap/http" />

		<wsdl:operation name="dollarToRupees">
			<soap:operation soapAction="" style="rpc" />
			<wsdl:input name="dollarToRupeesRequest">
				<soap:body use="literal" namespace="http://org.apache.geronimo.samples.jaxrpc/"/>
			</wsdl:input>
			<wsdl:output name="dollarToRupeesResponse">
				<soap:body use="literal" namespace="http://org.apache.geronimo.samples.jaxrpc/"/>
			</wsdl:output>
		</wsdl:operation>

		<wsdl:operation name="rupeesToEuro">
			<soap:operation soapAction="" style="rpc" />
			<wsdl:input name="rupeesToEuroRequest">
				<soap:body use="literal" namespace="http://org.apache.geronimo.samples.jaxrpc/"/>
			</wsdl:input>
			<wsdl:output name="rupeesToEuroResponse">
				<soap:body use="literal" namespace="http://org.apache.geronimo.samples.jaxrpc/"/>
			</wsdl:output>
		</wsdl:operation>

	</wsdl:binding>

	<wsdl:service name="ConverterService">
		<wsdl:port binding="tns:ConverterSOAPBinding"
			name="ConverterPort">
			<soap:address
				location="http://localhost:8080/jaxrpc-converter/ConverterPort" />
		</wsdl:port>
	</wsdl:service>

</wsdl:definitions>

...

Right click the WEB-INF directory and select New -> Other
Select XML from the XML category in the popup box.
Name the file as jaxrpcmapping.xml and click Finish.

Add the following code to jaxrpcmapping.xml:

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<?xml version="1.0" encoding="UTF-8"?>
<java-wsdl-mapping
	xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	version="1.1">
</java-wsdl-mapping>

...

Right-click the WEB-INF directory and select New -> Other
Select XML from the XML category in the popup box.
Name the file as webservices.xml and click Finish.

Add the following code to webservices.xml:

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<?xml version="1.0" encoding="UTF-8"?>
<webservices xmlns="http://java.sun.com/xml/ns/j2ee"
             version="1.1">
    <webservice-description>
        <webservice-description-name>JAX-RPC Converter Service</webservice-description-name>
        <wsdl-file>WEB-INF/Converter.wsdl</wsdl-file>
        <jaxrpc-mapping-file>WEB-INF/jaxrpcmapping.xml</jaxrpc-mapping-file>
        <port-component>
            <port-component-name>ConverterPort</port-component-name>
            <wsdl-port>ConverterPort</wsdl-port>
            <service-endpoint-interface>org.apache.geronimo.samples.jaxrpc.Converter</service-endpoint-interface>
            <service-impl-bean>
                <servlet-link>JAXRPCConverterService</servlet-link>
            </service-impl-bean>
        </port-component>
    </webservice-description>
 
</webservices>

This completes the setting up of Deployment Descriptor and Deployment Plans.

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Converter.wsdl - Here we specify the web methods which are exposed and what are the request parameters and return parameters. We also specify other details like targetNamespace, service name, binding, port name, port type.

jaxrpcmapping.xml - Actually this file specifies the mapping between the java methods and WSDL messages. Here it is not required as we are mapping all the methods to WSDL. For Further reference here is a sample that how a method will be mapped from Java to WSDL.

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<?xml version="1.0" encoding="UTF-8"?>
<java-wsdl-mapping xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:Converter="http://org.apache.geronimo.samples.jaxrpc/"
	version="1.1">
	<package-mapping>
		<package-type>org.apache.geronimo.samples.jaxrpc</package-type>
		<namespaceURI>urn:geronimo-samples</namespaceURI>
	</package-mapping>
	<service-interface-mapping>
		<service-interface>
			org.apache.geronimo.samples.jaxrpc.Converter;
		</service-interface>
		<wsdl-service-name>
			Converter:ConverterService
		</wsdl-service-name>
		<port-mapping>
			<port-name>ConverterPort</port-name>
			<java-port-name>ConverterPort</java-port-name>
		</port-mapping>
	</service-interface-mapping>
	<service-endpoint-interface-mapping>
		<service-endpoint-interface>
			org.apache.geronimo.samples.jaxrpc.Converter
		</service-endpoint-interface>
		<wsdl-port-type>Converter:Converter</wsdl-port-type>
		<wsdl-binding>Converter:ConverterSOAPBinding</wsdl-binding>
		<service-endpoint-method-mapping>
			<java-method-name>dollarToRupees</java-method-name>
			<wsdl-operation>dollarToRupees</wsdl-operation>
			<method-param-parts-mapping>
				<param-position>0</param-position>
				<param-type>java.math.BigDecimal</param-type>
				<wsdl-message-mapping>
					<wsdl-message>
						Converter:dollarToRupeesRequest
					</wsdl-message>
					<wsdl-message-part-name>in</wsdl-message-part-name>
					<parameter-mode>IN</parameter-mode>
				</wsdl-message-mapping>
			</method-param-parts-mapping>
			<wsdl-return-value-mapping>
				<method-return-value>
					java.math.BigDecimal
				</method-return-value>
				<wsdl-message>
					Converter:dollarToRupeesResponse
				</wsdl-message>
				<wsdl-message-part-name>out</wsdl-message-part-name>
			</wsdl-return-value-mapping>
		</service-endpoint-method-mapping>
	</service-endpoint-interface-mapping>
</java-wsdl-mapping>

webservices.xml - This is the file necessary for deploying any web services (JAX-RPC or JAX-WS). But starting from Java EE 5 webservices.xml is no longer necessary. This file contains all the necessary components to describe web service and where to find them.

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The change you are required to do in the client JSP's are:

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URL url = new URL("http://localhost:8080/jaxrpc-converter/converter?wsdl");
QName qname = new QName("http://org.apache.geronimo.samples.jaxrpc/","ConverterService");
ServiceFactory factory = null;
Service service = null;
try {
      factory = ServiceFactory.newInstance();
      service = factory.createService(url, qname);
} catch (ServiceException e) {
	e.printStackTrace();
}
Converter conv = (Converter) service.getPort(Converter.class);

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The class files that are necessary for a EJB JAX-RPC Web Service are:
- Service Endpoint Interface - Converter.java
- Home Interface - ConverterHome.java
- Remote Interface - ConverterRemote.java
- Bean Implementation - ConverterBean.java
  Info
  title EJB Classes
  These classes that are required by JAX-RPC are according to J2EE 1.4 standards (As JAX-RPC theoretically maps to J2EE 1.4).

Also in ejb-jar.xml, one has to specify which class are you using as Home, Remote, SEI, Bean. A sample ejb-jar.xml may look like this:

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<ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee" version="2.1">
  <enterprise-beans>
    <session>
      <ejb-name>Converter</ejb-name>
      <home>org.apache.geronimo.samples.jaxrpc.ConverterHome</home>
      <remote>org.apache.geronimo.samples.jaxrpc.ConverterRemote</remote>
      <service-endpoint>org.apache.geronimo.samples.jaxrpc.Converter</service-endpoint>
      <ejb-class>org.apache.geronimo.samples.jaxrpc.ConverterBean</ejb-class>
      <session-type>Stateless</session-type>
      <transaction-type>Container</transaction-type>
    </session>
  </enterprise-beans>
</ejb-jar>

This completes the development of JAX-RPC Web Services. After completing this tutorial you should have a understanding about how JAX-RPC Web Services are deployed.

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