a SOAP message using SAAJ

--> doGoogleSearch WebService with JAVA

----------------------Client.java----------------------
import javax.xml.soap.SOAPConnectionFactory;
import javax.xml.soap.SOAPConnection;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPPart;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPElement;
import javax.xml.soap.MimeHeaders;

import javax.xml.transform.TransformerFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.Source;

import javax.xml.transform.stream.StreamResult;

public class Client {

  public static void main(String[] args) {

    try {
        // Create the connection
        SOAPConnectionFactory scf = SOAPConnectionFactory.newInstance();
        SOAPConnection conn = scf.createConnection();

        // Create message
        MessageFactory mf = MessageFactory.newInstance();
        SOAPMessage msg = mf.createMessage();

        // Add eventually a SoapAction header if necessary
        MimeHeaders hd = msg.getMimeHeaders();
        hd.addHeader("SOAPAction", "\"urn:GoogleSearchAction\"");

        // Object for message parts
        SOAPPart sp = msg.getSOAPPart();

        SOAPEnvelope env = sp.getEnvelope();
        env.addNamespaceDeclaration("xsd","http://www.w3.org/2001/XMLSchema");
        env.addNamespaceDeclaration("xsi","http://www.w3.org/2001/XMLSchema-instance");
        env.addNamespaceDeclaration("enc","http://schemas.xmlsoap.org/soap/encoding/");
        env.addNamespaceDeclaration("env","http://schemas.xmlsoap.org/soap/envelop/");
        env.setEncodingStyle("http://schemas.xmlsoap.org/soap/encoding/");

        SOAPBody bd = env.getBody();

        // Populate body
        // Main element and namespace
        SOAPElement be = bd.addChildElement(env.createName("doGoogleSearch",
                "namesp1",
                "urn:GoogleSearch"));
        be.addChildElement("key").addTextNode("OS7mOjxQFHIztxIYU9yb8y3ibYgY4w2o").setAttribute("xsi:type","xsd:string");
        be.addChildElement("q").addTextNode("ls").setAttribute("xsi:type","xsd:string");
        be.addChildElement("start").addTextNode("0").setAttribute("xsi:type","xsd:int");
        be.addChildElement("maxResults").addTextNode("5").setAttribute("xsi:type","xsd:int");
        be.addChildElement("filter").addTextNode("0").setAttribute("xsi:type","xsd:boolean");
        be.addChildElement("restrict").setAttribute("xsi:type","xsd:string");
        be.addChildElement("safeSearch").addTextNode("0").setAttribute("xsi:type","xsd:boolean");
        be.addChildElement("lr").setAttribute("xsi:type","xsd:string");
        be.addChildElement("ie").addTextNode("latin1").setAttribute("xsi:type","xsd:string");
        be.addChildElement("oe").addTextNode("latin1").setAttribute("xsi:type","xsd:string");

        // Save message
        msg.saveChanges();

        // View input
        System.out.println("\n Soap request:\n");
        msg.writeTo(System.out);
        System.out.println();

        // Send
        String urlval = "http://api.google.com/search/beta2";
        SOAPMessage rp = conn.call(msg, urlval);

        // View the output
        System.out.println("\nXML response\n");

        // Create transformer
        TransformerFactory tff = TransformerFactory.newInstance();
        Transformer tf = tff.newTransformer();

        // Get reply content
        Source sc = rp.getSOAPPart().getContent();

        // Set output transformation
        StreamResult result = new StreamResult(System.out);
        tf.transform(sc, result);
        System.out.println();

        // Close connection
        conn.close();

      }
      catch (Exception e){
        System.out.println(e.getMessage());
      }
   }
}
-------------------------------------------------------

1. get the latest java sdk (1.6.0_16)
2. javac Client.java
3. java Client

Reference:
http://www.pascalbotte.be
http://users.skynet.be/pascalbotte/rcx-ws-doc/present.htm
http://users.skynet.be/pascalbotte/rcx-ws-doc/saajpost.htm