用Java开发WebService Axis，怎么把请求内容打印下来？

import java.rmi.RemoteException;
import javax.xml.rpc.ParameterMode;

import javax.xml.rpc.ServiceException;
import javax.xml.soap.SOAPException;
import org.apache.axis.client.Call;

import org.apache.axis.client.Service;
import org.apache.axis.encoding.XMLType;
import org.apache.axis.message.SOAPHeaderElement;
public class SOAPHepler {

    public static void main(String[] args) throws ServiceException, RemoteException {
        try {
            String endpointURL = "http://122.228.134.30:2121/EtoneWebService.asmx?WSDL";
            Service service = new Service();
            Call call = (Call) service.createCall();
            call.setTargetEndpointAddress(new java.net.URL(endpointURL));
            call.setSOAPActionURI("http://tempuri.org/" + "getPhoneArea");
            call.setOperationName("getPhoneArea"); 
            SOAPHeaderElement soapHeaderElement = new SOAPHeaderElement("http://tempuri.org/", "etoneSoapHeader");
            soapHeaderElement.setNamespaceURI("http://tempuri.org/");
            try {
                soapHeaderElement.addChildElement("UserName").setValue("admin");
                soapHeaderElement.addChildElement("Password").setValue("123");
            }
            catch (SOAPException e)    {
                e.printStackTrace();
            }
            call.addHeader(soapHeaderElement);
            call.setReturnType(XMLType.XSD_STRING);
            call.addParameter("mobile", XMLType.XSD_STRING, ParameterMode.IN);
            String ret = (String) call.invoke(new Object[] { "18268136200" });
            System.out.println(ret);
            
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}

我实质上是想打印请求报文的内容的，或者用什么工具捕获请求的报文