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我想使用kso​​ap2在android中创建带有安全头的soap信封.我的android代码是......

import org.ksoap2.SoapEnvelope;
import org.ksoap2.SoapFault;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.kxml2.kdom.Element;
import org.kxml2.kdom.Node;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class SOP_WebService extends Activity
{

    private final String NAMESPACE = "http://xmlns.oracle.com/WorklistRetrival";
    private final String URL = "http://www.sample.com/orabpel/default/WorklistRetrival/1.0";
    private final String SOAP_ACTION = "process";
    private final String METHOD_NAME = "WorklistRetrievalREQ";  

    public void onCreate(Bundle savedInstanceState) 
    {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.soap_webservice);

         Button btnClick = (Button) findViewById(R.id.btnClick);
         btnClick.setOnClickListener(new OnClickListener()
         {
            @Override
            public void onClick(View …