我认为这是一个简单的问题，其他人可能会提供缺少的链接。我有一个 Workflow wcf服务，我的.NET客户端可以正常通信。我已经在appfabric下打开了跟踪，可以看到服务调用正常执行，所以我觉得服务不是问题。我的Android调用永远不会达到第一个跟踪点。
在使用ksoap2（2.6.5）的Android中，当我调用此行时，我得到一个Object引用未设置错误：
SoapObject response = (SoapObject)envelope.getResponse();
对我而言，这似乎很简单，信封必须为null，当我们尝试访问它以执行getResponse时，我们会遇到错误，但在调试器中它将其显示为有效对象。此外，我找不到要解释的文档，我看到的每个教程都有这种方式，所以......？
有一点不同的是，在.NET中我会创建一个对象传递对象，让.NET为我序列化它。在这里，我添加了几个参数，它们都是字符串，但我将展示枚举，因为它可能是罪魁祸首。这是我完整的Java实现：
String NAMESPACE = "http://tempuri.org/";
String METHOD_NAME = "LiftDataExchange";
String SOAP_ACTION = "http://tempuri.org/ILiftDataExchange/ProcessDataRequest";
String URL = "http://www.icyarmtesting.com/LiftDataExchange.xamlx";
String SOAP_REMOTE_NAMESPACE = "http://schemas.datacontract.org/2004/07/IronMikeDataExchangeWorkflowService.Enum";
String X = "";
ExchangeEnumerations ExrcsEnum = ExchangeEnumerations.GetNextWorkout;
//Initialize soap request
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
//add parameters
PropertyInfo piAct = new PropertyInfo();
piAct.setName("Action");
piAct.setValue(ExrcsEnum);
piAct.setType(ExchangeEnumerations.class);
request.addProperty(piAct);
//Declare the version of the SOAP request
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.addMapping(SOAP_REMOTE_NAMESPACE, "ExchangeEnumerations", ExchangeEnumerations.class, ExchangeEnumerationsEnumClass.getInstance());
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
//Needed to make the internet call
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
androidHttpTransport.debug = true;
try
{
//this is the actual part that will call the webservice
androidHttpTransport.call(SOAP_ACTION, envelope);
SoapObject response = (SoapObject)envelope.getResponse();
X = response.getProperty(0).toString();
}
catch (Exception e)......
这是我的请求转储：
<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>
<LiftDataExchange xmlns="http://tempuri.org/" id="o0" c:root="1">
<UserName i:type="d:string">STERILIZED_OUT</UserName>
<Password i:type="d:string">STERILIZED_OUT</Password>
<ExerciseProgramID i:type="d:string">STERILIZED_OUT</ExerciseProgramID>
<IncomingWorkoutData i:type="d:string">STERILIZED_OUT</IncomingWorkoutData>
<Action i:type="n0:ExchangeEnumerations" xmlns:n0="http://schemas.datacontract.org/2004/07/IronMikeDataExchangeWorkflowService.Enum">GetNextWorkout</Action>
</LiftDataExchange>
</v:Body>
</v:Envelope>
这是我的回复转储：
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<s:Fault>
<faultcode xmlns:a="http://schemas.microsoft.com/net/2005/12/windowscommunicationfoundation/dispatcher">a:InternalServiceFault</faultcode>
<faultstring xml:lang="en-US">Object reference not set to an instance of an object.</faultstring>
<detail>
<ExceptionDetail xmlns="http://schemas.datacontract.org/2004/07/System.ServiceModel" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<HelpLink i:nil="true"/>
<InnerException i:nil="true"/>
<Message>Object reference not set to an instance of an object.</Message>
<StackTrace> at System.ServiceModel.Activities.WorkflowOperationContext.HandleEndResumeBookmark(IAsyncResult result)
 at System.ServiceModel.Activities.WorkflowOperationContext.OnResumeBookmark()
 at System.ServiceModel.Activities.WorkflowOperationContext..ctor(Object[] inputs, OperationContext operationContext, String operationName, Boolean performanceCountersEnabled, Boolean propagateActivity, Transaction currentTransaction, WorkflowServiceInstance workflowInstance, IInvokeReceivedNotification notification, WorkflowOperationBehavior behavior, ServiceEndpoint endpoint, TimeSpan timeout, AsyncCallback callback, Object state)
 at System.ServiceModel.Activities.Description.WorkflowOperationBehavior.WorkflowOperationInvoker.OnBeginServiceOperation(WorkflowServiceInstance workflowInstance, OperationContext operationContext, Object[] inputs, Transaction currentTransaction, IInvokeReceivedNotification notification, TimeSpan timeout, AsyncCallback callback, Object state)
 at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult.PerformOperation()
 at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult.HandleEndGetInstance(IAsyncResult result)
 at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult.Process()
 at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult..ctor(ControlOperationInvoker invoker, Object[] inputs, IInvokeReceivedNotification notification, TimeSpan timeout, AsyncCallback callback, Object state)
 at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.InvokeBegin(Object instance, Object[] inputs, IInvokeReceivedNotification notification, AsyncCallback callback, Object state)
 at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
 at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
 at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
 at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)</StackTrace><Type>System.NullReferenceException</Type></ExceptionDetail></detail></s:Fault></s:Body></s:Envelope>
更新
切换到Edwin的方法调用具有相同的结果。所以我从KSoap2 2.6.5 3.0.0-RC4升级，现在我得到一个NullRefException。使用以前的版本，我会点击服务并抛出对象未设置错误。有了这个版本，我没有点击服务并抛出NullRef。代码是唯一改变的是我使用的KSoap版本。我写了一个简单的服务（记住这些是工作流服务），它接受一个字符串，更改它，然后踢出一个字符串。
FWIW这是我打电话的代码：
String SOAP_ACTION = "http://tempuri.org/";
String OPERATION_NAME="ChangeName";
final String WSDL_TARGET_NAMESPACE = SOAP_ACTION;
final String SOAP_ADDRESS= "http://www.icyarmtesting.com/ServiceTest/Service1.xamlx";
Exception exception;
String ErrorMsg="";
String TEST_URL="" ;
SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE, OPERATION_NAME);
//PropertyInfo piName = new PropertyInfo();
//piName.setName("UserName");
//piName.setValue("ramjet");
//piName.setType(String.class);
//request.addProperty(piName);
request.addProperty("UserName", "ramjet");
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12);
envelope.dotNet= true;
envelope.setOutputSoapObject(request);
HttpTransportSE httpTransport =null;
if(!TEST_URL.equals(""))
httpTransport = new HttpTransportSE(TEST_URL);
else
httpTransport = new HttpTransportSE(SOAP_ADDRESS);
Object Response =null;
try
{
httpTransport.call(SOAP_ACTION + "IService/" + OPERATION_NAME, envelope);
Response = envelope.getResponse();
}
catch (SocketTimeoutException ex)
{
ErrorMsg="Unable to connect";
Response=null;
exception=ex;
}
catch (IOException ie)
{
ErrorMsg="Unable to connect";
Response=null;
exception=ie;
}
catch (Exception e)
{
ErrorMsg="Unable to connect";
Response=null;
exception=e;
}
答案 0 :(得分：0)
更改以下内容：
SoapObject response = (SoapObject)envelope.getResponse();
X = response.getProperty(0).toString();
是：
SoapObject response = (SoapObject)envelope.bodyIn;
if(response != null)
{
X=response.getProperty(0).toString();
}
答案 1 :(得分：0)
这是我用来调用Web服务的类，希望这可以帮助你
public class CallSOAP {
private String SOAP_ACTION="your action url";
private String OPERATION_NAME="";//The web method OR web service you are going to call
private final String WSDL_TARGET_NAMESPACE=SOAP_ACTION;
private final String SOAP_ADDRESS=Configuration.WEB_SERVICE_URL;//ip-address of serever where you host your service
private Exception exception;
private String ErrorMsg="";
private String TERST_URL="" ;
public Object call(String MethodeName,ArrayList<PropertyInfo> Parameters){
this.OPERATION_NAME=MethodeName;
SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE, OPERATION_NAME);
if(Parameters != null && Parameters.size()>0){
for(PropertyInfo propertyInfo : Parameters){
request.addProperty(propertyInfo);
}
}
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet= true;
envelope.setOutputSoapObject(request);
HttpTransportSE httpTransport =null;
if(!this.TERST_URL.equals(""))
httpTransport = new HttpTransportSE(this.TERST_URL);
else
httpTransport = new HttpTransportSE(SOAP_ADDRESS);
Object Response =null;
try{
httpTransport.call(SOAP_ACTION+OPERATION_NAME, envelope);
Response=envelope.getResponse();
}
catch (SocketTimeoutException ex) {
this.ErrorMsg="Unable to connect";
Response=null;
this.exception=ex;
}
catch (IOException ie) {
this.ErrorMsg="Unable to connect";
Response=null;
this.exception=ie;
}
catch (Exception e) {
this.ErrorMsg="Unable to connect";
Response=null;
this.exception=e;
}
return Response;
}
}
答案 2 :(得分：0)
我在我的班级中使用以下函数来使用SOAP Web-Service。
public static String DeleteGame(String GameIDValue, String PlayerIdValue) {
String responce = null;
SoapObject request = new SoapObject(SOAP_NAMESPACE, SOAP_METHOD_DeleteGame);
PropertyInfo GameId = new PropertyInfo();
PropertyInfo PlayerId = new PropertyInfo();
GameId.setName("gameid");
GameId.setValue(GameIDValue);
PlayerId.setName("PlayerID");
PlayerId.setValue(PlayerIdValue);
request.addProperty(GameId);
request.addProperty(PlayerId);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransportSE aht = new HttpTransportSE(SOAP_URL);
try {
aht.call(SOAP_ACTION_DeleteGame, envelope);
SoapPrimitive LoginResult;
LoginResult = (SoapPrimitive)envelope.getResponse();
System.out.println("=================Delete Game Results: "+LoginResult.toString());
//System.out.println(LoginResult.toString());
responce = LoginResult.toString();
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
return responce;
}
答案 3 :(得分：0)
我知道回答这个问题为时已晚，但我遇到了同样的问题，我的代码中的问题是我输入了property.setname（）不正确..确保你写了正确的方法参数名称（复制过去它来自wsdl）我正在使用ksoap2 3.1.1顺便说一句！