在Android上使用Web服務時出現異常錯誤

Question

現在我已經使用SOAP方法從android eclipse中使用web服務。

我需要從edittext獲取輸入並顯示正確的值，這意味着調用Web服務並返回結果。

模擬器運行後，顯示爲「錯誤：java.lang.RuntimeException：無法序列化0004」。如何結束此錯誤。

這裏是我的代碼，請找

screen.java

public class X_classActivity extends Activity 
{ 
    private EditText edit; 
    private Button btn; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) 
    { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     edit = (EditText) findViewById(R.id.editText1); 
     btn = (Button)findViewById(R.id.button1); 
     btn.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
         fun(); 
      } 
     }); 
    } 

private void fun() 
{ 
    //getSOAPResponse() method returns SOAP Response 
    SoapObject soapResponseObject = getSOAPResponse(edit.getText()); 
} 

public SoapObject getSOAPResponse(GetChars search) 
{ 
    SoapObject soapObject = new SoapObject("http://tempuri.org/", "GetName"); 
    soapObject.addProperty("str", search); 

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12); 
    envelope.dotNet = true; 
    envelope.setOutputSoapObject(soapObject); 
    HttpTransportSE androidHttpTransport = new  HttpTransportSE("http://122.248.240.105:234/Service1.asmx?WSDL"); 
    try 
    { 
     androidHttpTransport.call("http://tempuri.org/GetName", envelope);//call the eb service Method 
     Object result = envelope.getResponse(); 
     System.out.println(" " + result.toString()); 
     ((TextView) findViewById (R.id.textView2)).setText(""+result.toString()); 
    } 
    catch (Exception E) 
    { 
     E.printStackTrace(); 
     ((TextView) findViewById (R.id.textView2)).setText("ERROR:" + E.getClass().getName() + ":" + E.getMessage()); 
    } 
    return soapObject; 
    } 
} 

logcat的

06-01 18:39:56.020: W/KeyCharacterMap(932): No keyboard for id 0 
06-01 18:39:56.020: W/KeyCharacterMap(932): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 
06-01 18:40:00.510: W/System.err(932): java.lang.RuntimeException: Cannot serialize: 0004 
06-01 18:40:00.520: W/System.err(932): at org.ksoap2.serialization.SoapSerializationEnvelope.writeElement(SoapSerializationEnvelope.java:661) 
06-01 18:40:00.520: W/System.err(932): at org.ksoap2.serialization.SoapSerializationEnvelope.writeProperty(SoapSerializationEnvelope.java:645) 
06-01 18:40:00.520: W/System.err(932): at org.ksoap2.serialization.SoapSerializationEnvelope.writeObjectBody(SoapSerializationEnvelope.java:614) 
06-01 18:40:00.520: W/System.err(932): at org.ksoap2.serialization.SoapSerializationEnvelope.writeObjectBody(SoapSerializationEnvelope.java:598) 
06-01 18:40:00.520: W/System.err(932): at org.ksoap2.serialization.SoapSerializationEnvelope.writeElement(SoapSerializationEnvelope.java:655) 
06-01 18:40:00.530: W/System.err(932): at org.ksoap2.serialization.SoapSerializationEnvelope.writeBody(SoapSerializationEnvelope.java:579) 
06-01 18:40:00.530: W/System.err(932): at org.ksoap2.SoapEnvelope.write(SoapEnvelope.java:192) 
06-01 18:40:00.530: W/System.err(932): at org.ksoap2.transport.Transport.createRequestData(Transport.java:74) 
06-01 18:40:00.530: W/System.err(932): at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:58) 
06-01 18:40:00.530: W/System.err(932): at com.x.x.x.X_classActivity.getSOAPResponse(X_classActivity.java:57) 
06-01 18:40:00.530: W/System.err(932): at com.x.x.x.X_classActivity.fun(X_classActivity.java:45) 
06-01 18:40:00.530: W/System.err(932): at com.x.x.x.X_classActivity.access$0(X_classActivity.java:41) 
06-01 18:40:00.530: W/System.err(932): at com.x.x.x.X_classActivity$1.onClick(X_classActivity.java:36) 
06-01 18:40:00.530: W/System.err(932): at android.view.View.performClick(View.java:2408) 
06-01 18:40:00.530: W/System.err(932): at android.view.View$PerformClick.run(View.java:8816) 
06-01 18:40:00.530: W/System.err(932): at android.os.Handler.handleCallback(Handler.java:587) 
06-01 18:40:00.530: W/System.err(932): at android.os.Handler.dispatchMessage(Handler.java:92) 
06-01 18:40:00.530: W/System.err(932): at android.os.Looper.loop(Looper.java:123) 
06-01 18:40:00.530: W/System.err(932): at android.app.ActivityThread.main(ActivityThread.java:4627) 
06-01 18:40:00.530: W/System.err(932): at java.lang.reflect.Method.invokeNative(Native Method) 
06-01 18:40:00.530: W/System.err(932): at java.lang.reflect.Method.invoke(Method.java:521) 
06-01 18:40:00.540: W/System.err(932): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
06-01 18:40:00.540: W/System.err(932): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
06-01 18:40:00.540: W/System.err(932): at dalvik.system.NativeStart.main(Native Method) 

Web方法

個

public class GetName { 
public String GetName(String str){ 
    return(str); 
} } 

非常感謝!!

Answer 1

我認爲你正在做的事情錯在這條線上，

androidHttpTransport.call("http://tempuri.org/GetName", envelope);//call the eb service Method 

我覺得第一個說法是錯誤的。請參閱下面的代碼，它對我來說工作正常。還請導出您構建項目時的依賴項。有時它會幫助你。

private String METHOD_NAME = ""; 
    // our webservice method name 
    private String NAMESPACE = "http://ws.travel_ceylon.web.org"; 
    // Here package name in webservice with reverse order. 
    private String SOAP_ACTION = NAMESPACE + METHOD_NAME; 
    // NAMESPACE + method name 
    private static final String URL = "http://192.168.177.130:8080/Travel_Ceylon_Central_Web_Service/services/Travel_Ceylon_Web_Service?wsdl"; 

    // you must use ipaddress here, don’t use Hostname or localhost 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     String city = "Matara"; 
     String im = "Galle Face"; 

     METHOD_NAME = "getLongitude_City"; 
     try { 
      SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); 
      request.addProperty("city", city); 
      SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
        SoapEnvelope.VER11); 
      envelope.dotNet = true; 
      envelope.setOutputSoapObject(request); 
      HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); 
      androidHttpTransport.call(SOAP_ACTION, envelope); 
      Object result = envelope.getResponse(); 
      ((TextView) findViewById(R.id.txtCityLongitude)).setText(city 
        + " Longitude is : " + result.toString()); 

     } catch (Exception E) { 
      E.printStackTrace(); 
      ((TextView) findViewById(R.id.txtCityLongitude)).setText("ERROR:" 
        + E.getClass().getName() + ":" + E.getMessage()); 
     }