jaxmorderserver.java

21天精通Java,这是一本英文书

package webservices;
 
import java.util.Iterator;

import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPElement;
import javax.xml.soap.SOAPBodyElement;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.Name;
import javax.xml.soap.SOAPException;
import javax.xml.soap.MessageFactory;

import javax.xml.messaging.JAXMServlet;
import javax.xml.messaging.ReqRespListener;

public class JAXMOrderServer extends JAXMServlet implements ReqRespListener
{
   
    // CHANGE MARSHALING TO USE SOAPELEMENTFACTORY AT SOME POINT
    
    public SOAPMessage onMessage(SOAPMessage message)
    {
        try
        {
            System.out.println("onMessage() called in JAXMOrderServer, message:\n");
            message.writeTo(System.out);
            System.out.println("");

            SOAPEnvelope envelope = message.getSOAPPart().getEnvelope();
            SOAPBody body = envelope.getBody();

            Name orderName = envelope.createName("order",
                                                 "acme",
                                                 "http://acme.com/commerce");

            Iterator iterator = body.getChildElements(orderName);
    
            Order order = new Order();

            if (iterator.hasNext())
            {
              SOAPBodyElement element = (SOAPBodyElement)iterator.next();
              order.unmarshal(element, envelope);
            }
            else
            {
              throw new SOAPException("order SOAPElement is missing from SOAP body");
            }

            System.out.println("Got order from " + order.getName());

            Receipt receipt = new Receipt(order.getName(), order.getAddress(),
                                          order.getNumItems(), calculateCost(order));

            //
            // Generate the receipt
            //
            MessageFactory fac = MessageFactory.newInstance();
            
            SOAPMessage msg = fac.createMessage();
            
            SOAPEnvelope env = msg.getSOAPPart().getEnvelope();
            
            Name receiptName = envelope.createName("receipt",
                                                   "acme",
                                                   "http://acme.com/commerce");

            SOAPBodyElement rcpt = env.getBody().addBodyElement(receiptName);
            
            receipt.marshal(rcpt, env);
            
            return msg;
        }
        catch(Exception ex)
        {
            System.err.println("Error in processing or replying to a message: " + ex);
            return null;
        }
  }
  
  private double calculateCost(Order order)
  {
    // Sale now on - everything for $49.99
    return order.getNumItems() * 49.99;
  }
}