Salve,
ho creato un semplice webservice che fa la somma di due numeri e un'app di prova su android che utilizza il webservice.
Il codice del webservice è il seguente:
INTERFACCIA:
CLASSE JAVA:codice:package com.example; import javax.jws.WebService; @WebService public interface Somma { public int returnSomma(int a, int b); }
Ho deployato il webservice su jboss e il wsdl ottenuto è il seguente:codice:package com.example; import javax.jws.WebService; @WebService public class SommaImpl implements Somma { public int returnSomma(int a, int b) { return a+b; } }
Infine ho creato la seguente activity per android che permette di inserire due numeri ed eseguire la somma richiamando il webservice:codice:<wsdl:definitions name="SommaImplService" targetNamespace="http://example.com/" xmlns:ns1="http://schemas.xmlsoap.org/soap/http" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://example.com/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <wsdl:types> <xs:schema elementFormDefault="unqualified" targetNamespace="http://example.com/" version="1.0" xmlns:tns="http://example.com/" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="returnSomma" type="tns:returnSomma"/> <xs:element name="returnSommaResponse" type="tns:returnSommaResponse"/> <xs:complexType name="returnSomma"> <xs:sequence> <xs:element name="arg0" type="xs:int"/> <xs:element name="arg1" type="xs:int"/> </xs:sequence> </xs:complexType> <xs:complexType name="returnSommaResponse"> <xs:sequence> <xs:element name="return" type="xs:int"/> </xs:sequence> </xs:complexType> </xs:schema> </wsdl:types> <wsdl:message name="returnSomma"> <wsdl:part element="tns:returnSomma" name="parameters"> </wsdl:part> </wsdl:message> <wsdl:message name="returnSommaResponse"> <wsdl:part element="tns:returnSommaResponse" name="parameters"> </wsdl:part> </wsdl:message> <wsdl:portType name="Somma"> <wsdl:operation name="returnSomma"> <wsdl:input message="tns:returnSomma" name="returnSomma"> </wsdl:input> <wsdl:output message="tns:returnSommaResponse" name="returnSommaResponse"> </wsdl:output> </wsdl:operation> </wsdl:portType> <wsdl:binding name="SommaImplServiceSoapBinding" type="tns:Somma"> <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/> <wsdl:operation name="returnSomma"> <soap:operation soapAction="" style="document"/> <wsdl:input name="returnSomma"> <soap:body use="literal"/> </wsdl:input> <wsdl:output name="returnSommaResponse"> <soap:body use="literal"/> </wsdl:output> </wsdl:operation> </wsdl:binding> <wsdl:service name="SommaImplService"> <wsdl:port binding="tns:SommaImplServiceSoapBinding" name="SommaImplPort"> <soap:address location="http://RC530:8080/SommaWS-Maven/SommaImpl"/> </wsdl:port> </wsdl:service> </wsdl:definitions>
Il problema è che quando avvio l'app ho il seguente messaggio di errore:codice:package com.example; import org.ksoap2.SoapEnvelope; import org.ksoap2.SoapFault; import org.ksoap2.serialization.SoapObject; import org.ksoap2.serialization.SoapSerializationEnvelope; import org.ksoap2.transport.HttpTransportSE; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends Activity { private static String NAMESPACE = "http://example.com/"; private static String METHOD_NAME = "returnSomma"; private static String SOAP_ACTION = ""; private static String URL = "http://192.168.1.68:8080/SommaWS-Maven/SommaImpl?wsdl"; EditText editTextnumero1, editTextnumero2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editTextnumero1=(EditText)findViewById(R.id.editTextNumero1); editTextnumero2=(EditText)findViewById(R.id.editTextNumero2); Button buttonSomma=(Button)findViewById(R.id.buttonSomma); buttonSomma.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub chiamaWebServiceSomma(); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } public void chiamaWebServiceSomma() { int numero1=Integer.parseInt(editTextnumero1.getText().toString()); int numero2=Integer.parseInt(editTextnumero2.getText().toString()); TextView textViewRisultato=(TextView)findViewById(R.id.textViewRisultato); SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); request.addProperty("arg0", numero1); request.addProperty("arg1", numero2); 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 SoapFault from the envelope body. SoapFault error = (SoapFault)envelope.bodyIn; System.out.println("Error message : "+error.toString()); //Get the SoapResult from the envelope body. SoapObject result = (SoapObject)envelope.bodyIn; if(result != null) //Get the first property and change the label text textViewRisultato.setText(result.getProperty(0).toString()); else textViewRisultato.setText("Nessun risultato"); } catch (Exception e) { textViewRisultato.setText("Eccezione!"); e.printStackTrace(); } } }
codice:Error message : SoapFault - faultcode: 'soap:Client' faultstring: 'Unmarshalling Error: unexpected element (uri:"http://example.com/", local:"arg0"). Expected elements are <{}arg1>,<{}arg0> ' faultactor: 'null' detail: nullcodice:java.lang.ClassCastException: org.ksoap2.SoapFault cannot be cast to org.ksoap2.serialization.SoapObject at com.example.MainActivity.chiamaWebServiceSomma(MainActivity.java:94) at com.example.MainActivity$1.onClick(MainActivity.java:43) at android.view.View.performClick(View.java:4211) at android.view.View$PerformClick.run(View.java:17267) at android.os.Handler.handleCallback(Handler.java:615) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4898) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773) at dalvik.system.NativeStart.main(Native Method)
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