在android eclipse上从webservice检索特定数据

有人能告诉我如何在android eclipse上从web服务检索特定数据吗。 到目前为止，我已经做了这些事情。请告诉我如何修复这个错误的来源

请在下面找到我的资料来源

[WEB方法]

package com.android.backend;

public class FahrenheitToCelsius {

    public double FahrenheitToCelsius(double str){
        return ((str-32)*5)/9;
    }
}

package com.android.button.web;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Tesing_webserviceActivity extends Activity
{
    /** Called when the activity is first created. */
    private static String NAMESPACE = "http://tempuri.org/";
    private static String METHOD_NAME = "FahrenheitToCelsius";
    private static String SOAP_ACTION = "http://tempuri.org/FahrenheitToCelsius";
    private static String URL = "http://www.w3schools.com/webservices/tempconvert.asmx?WSDL";

      Button btnFar,btnClear;
      EditText txtFar,txtres;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        btnFar = (Button)findViewById(R.id.btn_getvalues);

        btnClear = (Button)findViewById(R.id.btnClear);
        txtFar = (EditText)findViewById(R.id.txtFar);
        txtres = (EditText)findViewById(R.id.txtresult);

        btnFar.setOnClickListener(new View.OnClickListener()
        {

           public void onClick(View v)
           {
           //Initialize soap request + add parameters
           SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);       

           //Use this to add parameters
           request.addProperty("str",txtFar.getText().toString());

           //Declare the version of the SOAP request
           SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

           envelope.setOutputSoapObject(request);
           envelope.dotNet = true;

           try {
               HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

               //this is the actual part that will call the webservice
                 androidHttpTransport.call(SOAP_ACTION, envelope);

               // Get the SoapResult from the envelope body.
                 SoapObject result = (SoapObject)envelope.bodyIn;

                 if(result != null)
                 {
                 //Get the first property and change the label text
                   txtres.setText(result.getProperty(0).toString());
                    }
                   else
                   {
                      Toast.makeText(getApplicationContext(), "No Response",Toast.LENGTH_LONG).show();
                    }
                  } catch (Exception e) {
                        e.printStackTrace();
               }
              }
            });

        btnClear.setOnClickListener(new View.OnClickListener()
        {

                  public void onClick(View v)
                  {
                        txtres.setText("");
                        txtFar.setText("");
                  }
            });
     }
 } 

[SCREENACTIVITY.JAVA]

package com.android.backend;

public class FahrenheitToCelsius {

    public double FahrenheitToCelsius(double str){
        return ((str-32)*5)/9;
    }
}

package com.android.button.web;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Tesing_webserviceActivity extends Activity
{
    /** Called when the activity is first created. */
    private static String NAMESPACE = "http://tempuri.org/";
    private static String METHOD_NAME = "FahrenheitToCelsius";
    private static String SOAP_ACTION = "http://tempuri.org/FahrenheitToCelsius";
    private static String URL = "http://www.w3schools.com/webservices/tempconvert.asmx?WSDL";

      Button btnFar,btnClear;
      EditText txtFar,txtres;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        btnFar = (Button)findViewById(R.id.btn_getvalues);

        btnClear = (Button)findViewById(R.id.btnClear);
        txtFar = (EditText)findViewById(R.id.txtFar);
        txtres = (EditText)findViewById(R.id.txtresult);

        btnFar.setOnClickListener(new View.OnClickListener()
        {

           public void onClick(View v)
           {
           //Initialize soap request + add parameters
           SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);       

           //Use this to add parameters
           request.addProperty("str",txtFar.getText().toString());

           //Declare the version of the SOAP request
           SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

           envelope.setOutputSoapObject(request);
           envelope.dotNet = true;

           try {
               HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

               //this is the actual part that will call the webservice
                 androidHttpTransport.call(SOAP_ACTION, envelope);

               // Get the SoapResult from the envelope body.
                 SoapObject result = (SoapObject)envelope.bodyIn;

                 if(result != null)
                 {
                 //Get the first property and change the label text
                   txtres.setText(result.getProperty(0).toString());
                    }
                   else
                   {
                      Toast.makeText(getApplicationContext(), "No Response",Toast.LENGTH_LONG).show();
                    }
                  } catch (Exception e) {
                        e.printStackTrace();
               }
              }
            });

        btnClear.setOnClickListener(new View.OnClickListener()
        {

                  public void onClick(View v)
                  {
                        txtres.setText("");
                        txtFar.setText("");
                  }
            });
     }
 } 

---

非常感谢

如果您要从Web服务检索简单信息，我建议使用返回JSON对象的REST服务。 在Android中，您可以使用GSON库轻松解析这个JSON对象。 将JSON解析为Java对象的示例：

objectType = new TypeToken<YourClass>(){}.getType();
//Parse the respons with GSON
Gson gson = new Gson();
return gson.fromJson(webserviceResponse, objectType);

---

我在我的一个项目中使用此功能（您可能不需要授权标题）：

---

确切的问题是什么？你得到了什么，你期望得到什么？我有一个包含一些数据的web服务。好的。这里我需要使用android/eclipse的web服务，所以我想通过edittextbox从用户那里获取输入，并根据用户在android eclipse上的输入显示相应的值。