...
<target name="-pre-compile">
    <antcall target="wsdl2java">
        <param name="wsdl2java.option" 
         value="-gen:client -d ${build.classes.dir}
         -package echo -compile -verbose ${src.conf}/DocLitEchoService.wsdl" />
    </antcall>
</target>
...

package j2se;

import echo.DocLitEchoService_Impl;
import echo.Echo;

public class ProxyClient {
    public static void main(String args[]) {
        ProxyClient client = new ProxyClient();
        client.run();
    }

    public void run() {
        try {
            Echo port = new DocLitEchoService_Impl().getEchoPort();
            String s = port.echoString("JEUS");
            System.out.println("response = " + s);
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }
    }
}

package j2se;

import javax.xml.namespace.QName;
import javax.xml.rpc.Call;
import javax.xml.rpc.ParameterMode;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;

public class DIIClient {
    private static final String NS_XSD = 
        "http://www.w3.org/2001/XMLSchema";
    private static final QName QNAME_XSD_STRING = new QName(NS_XSD, "string");

    public void run() {
        try {
            ServiceFactory factory = ServiceFactory.newInstance();
            String endpoint = "http://localhost:8088/" +
                "RpcEncEchoService/RpcEncEchoService";
            String targetNamespace = "urn:RpcEncService";
            Service service = factory.createService(
                new QName(targetNamespace, "RpcEncService"));
            Call call = service.createCall();

            call.setTargetEndpointAddress(endpoint);
            call.setOperationName(
                new QName(targetNamespace, "echoString"));
            call.addParameter("String_1", QNAME_XSD_STRING, ParameterMode.IN);
            call.setProperty(Call.OPERATION_STYLE_PROPERTY, "rpc");
            call.setProperty(Call.ENCODINGSTYLE_URI_PROPERTY,
                             "http://schemas.xmlsoap.org/soap/encoding/");
            call.setReturnType(QNAME_XSD_STRING);

            String ret = (String)call.invoke(new Object[] { "JEUS" });
            System.out.println("response = " + ret);
        } catch (Exception e) {
            System.err.println(e.toString());
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        DIIClient client = new DIIClient();
        try {
            client.run();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

<%@ page language="java" %>
<%@ page import="javax.naming.*" %>
<%@ page import="javax.rmi.*" %>
<%@ page import="java.rmi.RemoteException" %>
<%@ page import="java.util.*" %>

<%@ page import="javax.naming.InitialContext" %>
<%@ page import="javax.xml.rpc.Service" %>
<%@ page import="javax.xml.rpc.Call" %>
<%@ page import="javax.xml.namespace.QName" %>
<%@ page import="javax.xml.rpc.ParameterMode" %>

<%@ page errorPage="/error.html" %>

<%! String msgToSend = "msg_sent_by_jspClient";
    String ret=null;
    String exceptionString="";
%>

<%
    try {
        InitialContext jndiContext = new InitialContext();
        Service service = (Service)jndiContext.lookup(
            "java:comp/env/service/RpcEncEchoService");

        String targetNamespace = "urn:RpcEncService";
        QName operationName = new QName(targetNamespace,"echoString");
        Call call = service.createCall();
        call.setOperationName(operationName);
        call.addParameter("String_1", 
            new QName("http://www.w3.org/2001/XMLSchema", "string"),ParameterMode.IN);
        
        call.setProperty(Call.OPERATION_STYLE_PROPERTY, "rpc");   
        call.setProperty(Call.ENCODINGSTYLE_URI_PROPERTY, 
            "http://schemas.xmlsoap.org/soap/encoding/");

        call.setReturnType(new QName("http://www.w3.org/2001/XMLSchema","string"));
        call.setTargetEndpointAddress("http://localhost:8088/" +
            "RpcEncEchoService/RpcEncEchoService");

        ret = (String)call.invoke(new Object[]{msgToSend});
    } catch (Exception e) {
        exceptionString = e.toString();
        e.printStackTrace();
    }
%>
<%= "Result is "+ret+"......" 
%>

<?xml version="1.0"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee">
    <servlet>
        <servlet-name>jsp_helloClient</servlet-name>
        <jsp-file>/helloClient.jsp</jsp-file>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <service-ref>
        <service-ref-name>
            service/DocLitEchoService2
        </service-ref-name>
        <service-interface>
            javax.xml.rpc.Service
        </service-interface>
    </service-ref>
</web-app>