Web服務Android應用程序：無法序列化1.0

Question

P.S：我已經看過類似的問題，但一直無法理解該怎麼做。他們談論使用一個元帥類，我似乎無法理解。

我創建一個Android應用到消耗JAX-WS。我正在使用相同的庫。

我從用戶輸入的一系列文本字段中傳遞這些信息到WebService活動中。
在這裏，在onCreate方法我稱之爲建立SOAP對象後，Web服務：

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    // Get the message from the intent 
    Intent intent = getIntent(); 
    Bundle extras = intent.getExtras(); 
    String cropName = extras.getString(AndroidWSClient.CROP_NAME); 
    float area = extras.getFloat(AndroidWSClient.AREA); 

同樣地，我得到肥料的一些名稱，並將其添加到一個名爲fertilizerList一個ArrayList。我也以類似的方式獲得三個更多的值。

SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); 

    // Add parameters to the SOAP object 
    // cropName 
    PropertyInfo propInfo = new PropertyInfo(); 
    propInfo.name = "cropName"; 
    propInfo.type = PropertyInfo.STRING_CLASS; 
    request.addProperty(propInfo, cropName); 
    System.out.println("!!!! Success with cropName !!!"); 
    // Area 
    propInfo = new PropertyInfo(); 
    propInfo.setName("area"); 
    propInfo.setType(Double.class); 
    request.addProperty(propInfo, area); 
    System.out.println("!!!! Success with area !!!"); 
    // fertilizerList 
    propInfo = new PropertyInfo(); 
    propInfo.setName("fertilizerList"); 
    propInfo.setType(ArrayList.class); 
    request.addProperty(propInfo, fertilizerList); 
    System.out.println("!!!! Success with fertilizerList !!!"); 
    // N value 
    propInfo = new PropertyInfo(); 
    propInfo.setName("nitrogen"); 
    propInfo.setType(Integer.class); 
    request.addProperty(propInfo, n); 
    System.out.println("!!!! Success with N !!!"); 

在這裏，我創建SOAP對象和屬性吧。
我需要將多個參數傳遞給我的Web服務，所以添加這些屬性的順序是它們作爲Web服務參數顯示的順序，對吧？
我然後發出請求到Web服務：

// Send out the request to the web service 
    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
    System.out.println("created envelope!"); 
    envelope.setOutputSoapObject(request); 
    System.out.println("Reached set output object"); 
    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); 
    System.out.println("Reached HttpTransport layer"); 
    try { 
     androidHttpTransport.call(SOAP_ACTION, envelope); 
     SoapPrimitive resultsRequestSOAP = (SoapPrimitive) envelope.getResponse(); 
     TextView textView = new TextView(this); 
     textView.setTextSize(40); 
     System.out.println(resultsRequestSOAP.toString()); 
     textView.setText(resultsRequestSOAP.toString()); 
     // Set the text view as the activity layout 
     setContentView(textView); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 

下面是從logcat的輸出：

07-11 05:37:32.782: I/System.out(1698): !!!! Success with cropName !!! 
    07-11 05:37:32.782: I/System.out(1698): !!!! Success with area !!! 
    07-11 05:37:32.792: I/System.out(1698): !!!! Success with fertilizerList !!! 
    07-11 05:37:32.792: I/System.out(1698): !!!! Success with N !!! 
    07-11 05:37:32.872: I/System.out(1698): created envelope! 
    07-11 05:37:32.872: I/System.out(1698): Reached set output object 
    07-11 05:37:32.912: I/System.out(1698): Reached HttpTransport layer 
    07-11 05:37:33.012: W/System.err(1698): java.lang.RuntimeException: Cannot serialize: 1.0 
    07-11 05:37:33.012: W/System.err(1698):  at org.ksoap2.serialization.SoapSerializationEnvelope.writeElement(SoapSerializationEnvelope.java:629) 
    07-11 05:37:33.022: W/System.err(1698):  at org.ksoap2.serialization.SoapSerializationEnvelope.writeProperty(SoapSerializationEnvelope.java:613) 
    07-11 05:37:33.032: W/System.err(1698):  at org.ksoap2.serialization.SoapSerializationEnvelope.writeObjectBody(SoapSerializationEnvelope.java:582) 
    07-11 05:37:33.032: W/System.err(1698):  at org.ksoap2.serialization.SoapSerializationEnvelope.writeObjectBody(SoapSerializationEnvelope.java:566) 
    07-11 05:37:33.062: W/System.err(1698):  at org.ksoap2.serialization.SoapSerializationEnvelope.writeElement(SoapSerializationEnvelope.java:623) 
    07-11 05:37:33.072: W/System.err(1698):  at org.ksoap2.serialization.SoapSerializationEnvelope.writeBody(SoapSerializationEnvelope.java:547) 
    07-11 05:37:33.072: W/System.err(1698):  at org.ksoap2.SoapEnvelope.write(SoapEnvelope.java:192) 
    07-11 05:37:33.092: W/System.err(1698):  at org.ksoap2.transport.Transport.createRequestData(Transport.java:74) 
    07-11 05:37:33.092: W/System.err(1698):  at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:58) 
    07-11 05:37:33.112: W/System.err(1698):  at com.example.androidwsclient.WebServiceActivity.onCreate(WebServiceActivity.java:99) 
    07-11 05:37:33.112: W/System.err(1698):  at android.app.Activity.performCreate(Activity.java:5104) 
    07-11 05:37:33.132: W/System.err(1698):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 

Answer 1

實現一個元帥雙

public class MarshalDouble implements Marshal 
{ 

@Override 
public Object readInstance(XmlPullParser parser, String namespace, String name, 
     PropertyInfo expected) throws IOException, XmlPullParserException { 

    return Double.parseDouble(parser.nextText()); 
} 

public void register(SoapSerializationEnvelope cm) { 
    cm.addMapping(cm.xsd, "double", Double.class, this); 

} 

@Override 
public void writeInstance(XmlSerializer writer, Object obj) throws IOException { 
     writer.text(obj.toString()); 
    }   
} 

然後在代碼中調用There register方法。

new MarshalDouble().register(envelope);