Android ksoap2可空類型

Question

我想從使用Ksoap2庫的Android設備連接到WCF .Net Web服務。一切工作正常，迄今爲止我已經能夠發送和接收復雜的對象（在很多故障排除之後）。但是，我現在遇到可空類型的問題。在服務器端，我將發送的很多屬性都是可空的。當我嘗試從Android端發送這些爲null時，我得到一個反序列化錯誤，因爲ksoap將null = true而不是nil = true。這裏有一些來自測試驅動程序的正在運行的SOAP XML以及來自Android客戶端的當前XML。

工作試車手XML

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"> 
<s:Body> 
    <AddNullables xmlns="http://TJIsGhey/Tester"> 
     <NumbersToAdd xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> 
      <Input1>7</Input1> 
      <Input2 i:nil="true" /> 
     </NumbersToAdd> 
    </AddNullables> 
</s:Body> 
</s:Envelope> 

Android客戶端的XML

<v:Envelope xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:d="http://www.w3.org/2001/XMLSchema" xmlns:c="http://schemas.xmlsoap.org/soap/encoding/" xmlns:v="http://schemas.xmlsoap.org/soap/envelope/"> 
    <v:Header /> 
    <v:Body> 
     <AddNullables xmlns="http://TJIsGhey/Tester" id="o0" c:root="1"> 
      <NumbersToAdd i:type="n0:NullablesIn" xmlns:n0="http://TJIsGhey/Tester"> 
       <Input1 i:type="d:int">6</Input1> 
       <Input2 i:null="true" /> 
      </NumbersToAdd> 
     </AddNullables> 
    </v:Body> 
</v:Envelope> 

這裏是我收到錯誤消息：

出現錯誤反序列化類型測試的對象.NullablesIn。值''不能被解析爲'Int32'類型。

任何幫助將不勝感激！

Answer 1

我有同樣的問題。 當我在Ksoap2源代碼中鑽取後，發現問題。 您有兩種可能的解決方案，第一種方法是在SoapSerializationEnvelope上使用VER12。 由於自VER12起，Ksoap2僅使用零屬性。 但是，您可能會受到此更改的影響，因此您有另一種選擇： 繼承SoapSerializationEnvelope並覆蓋此類的writeProperty方法。 像這樣：

public class ExtendedSoapSerializationEnvelope extends 
    SoapSerializationEnvelope { 

public ExtendedSoapSerializationEnvelope(int version) { 
    super(version); 
} 

@Override 
protected void writeProperty(XmlSerializer writer, Object obj, 
     PropertyInfo type) throws IOException { 
    if (obj == null) { 

     if (!(obj instanceof SoapObject)) { 
      // assuming object implements KvmSerializable or other type of 
      // Serialization interface 
      writer.attribute(xsi, version >= VER11 ? "nil" : "null", "true"); 

     } else { 
      // assuming SoapObject being used with VER12 and up 
      writer.attribute(xsi, version >= VER12 ? "nil" : "null", "true"); 
     } 
     return; 
    } 
    super.writeProperty(writer, obj, type); 
}} 

如果你知道你的web服務總是零，你可以跳過此檢查altogther工作，只需使用：

@Override 
protected void writeProperty(XmlSerializer writer, Object obj, 
     PropertyInfo type) throws IOException { 
    if (obj == null) { 
     writer.attribute(xsi, "nil", "true"); 
     return; 
    } 

    super.writeProperty(writer, obj, type); 

} 

Answer 2

解決方法的方法是使用參數skipNullProperties這樣忽略此"<element type>"：

SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); 
envelope.skipNullProperties=true; 

Answer 3

問題解決了

import android.os.AsyncTask; 
 
import android.support.v7.app.AppCompatActivity; 
 
import android.os.Bundle; 
 
import android.widget.TextView; 
 
import org.ksoap2.SoapEnvelope; 
 
import org.ksoap2.serialization.SoapObject; 
 
import org.ksoap2.serialization.SoapSerializationEnvelope; 
 
import org.ksoap2.transport.HttpsTransportSE; 
 
import java.net.URISyntaxException; 
 

 
public class MainActivity extends AppCompatActivity { 
 
    private static final String URL = "https://services.rs.ge/WayBillService/WayBillService.asmx?WSDL"; 
 

 
    TextView tv; 
 

 
    @Override 
 
    public void onCreate(Bundle savedInstanceState) { 
 
     super.onCreate(savedInstanceState); 
 
     tv = new TextView(this); 
 
     String[] params = new String[]{"save_waybill","s22:12345678910","123456"}; 
 
     new MyAsyncTasc().execute(params); 
 
     setContentView(tv); 
 
    } 
 

 
    class MyAsyncTasc extends AsyncTask<String,Void,String> { 
 
     @Override 
 
     protected String doInBackground(String... params) { 
 
      String SOAP_ACTION="http://tempuri.org/"+params[0]; 
 
      int timeOut = 60000; 
 
      SoapSerializationEnvelope __envelope=new SoapSerializationEnvelope(SoapEnvelope.VER11); 
 
      SoapObject request = new SoapObject("http://tempuri.org/", params[0]); 
 
      __envelope.dotNet = true; 
 
      __envelope.setOutputSoapObject(request); 
 
      request.addProperty("su", params[1]); 
 
      request.addProperty("sp", params[2]); 
 

 
      //------------------ SoapObject 
 
      SoapObject waybill1 = new SoapObject("", "WAYBILL"); 
 
      SoapObject goods1 = new SoapObject("", "GOODS"); 
 
      SoapObject good_list1 = new SoapObject("", "GOODS_LIST"); 
 
      waybill1.addProperty("SELER_UN_ID", 1149251); 
 
      waybill1.addProperty("ID", 0); 
 
      waybill1.addProperty("TYPE", 1); 
 
      waybill1.addProperty("STATUS", 1); 
 
      waybill1.addProperty("START_ADDRESS", "START_ADDRESS"); 
 
      waybill1.addProperty("END_ADDRESS", "END_ADDRESS"); 
 
      waybill1.addProperty("DRIVER_TIN", "61007004242"); 
 
      waybill1.addProperty("CAR_NUMBER", "AAA000"); 
 
      waybill1.addProperty("CHEK_DRIVER_TIN", 1); 
 
      waybill1.addProperty("TRANSPORT_COAST", 0); 
 
      waybill1.addProperty("TRAN_COST_PAYER", 2); 
 
      waybill1.addProperty("TRANS_ID", 1); 
 

 
      goods1.addProperty("ID", 0); 
 
      goods1.addProperty("W_NAME", "W_NAME"); 
 
      goods1.addProperty("UNIT_ID", 1); 
 
      goods1.addProperty("QUANTITY", 2); 
 
      goods1.addProperty("PRICE", 1); 
 
      goods1.addProperty("AMOUNT", 2); 
 
      goods1.addProperty("BAR_CODE", "1"); 
 

 
      good_list1.addProperty("GOODS", goods1); 
 

 
      goods1 = new SoapObject("", "GOODS"); 
 
      goods1.addProperty("ID", 0); 
 
      goods1.addProperty("W_NAME", "W_NAME2"); 
 
      goods1.addProperty("UNIT_ID", 1); 
 
      goods1.addProperty("QUANTITY", 4); 
 
      goods1.addProperty("PRICE", 1); 
 
      goods1.addProperty("AMOUNT",4); 
 
      goods1.addProperty("BAR_CODE", "2"); 
 

 
      good_list1.addProperty("GOODS", goods1); 
 

 
      waybill1.addProperty("GOODS_LIST", good_list1); 
 
      SoapObject wib_send = new SoapObject("", "waybill"); 
 
      wib_send.addProperty("WAYBILL", waybill1); 
 
      request.addProperty("waybill", wib_send); 
 

 
      java.net.URI uri = null; 
 
      try { 
 
       uri = new java.net.URI(URL); 
 
      } catch (URISyntaxException e) { 
 
       e.printStackTrace(); 
 
      } 
 
      int port=uri.getPort()>0?uri.getPort():443; 
 
      HttpsTransportSE httpTransport= new HttpsTransportSE(uri.getHost(), port, uri.getPath(), timeOut); 
 
      httpTransport.debug = true; 
 
      try { 
 
       httpTransport.call(SOAP_ACTION, __envelope); 
 
       SoapObject resultRequestSOAP = (SoapObject) __envelope.bodyIn; 
 
       return resultRequestSOAP.toString(); 
 
      } catch(Exception exp){ 
 
       return "Error"; 
 
      } 
 
     } 
 
     @Override 
 
     protected void onPostExecute(final String result) { 
 
      tv.setText(result); 
 
     } 
 
    } 
 
}