对我来说，最简单的方法是使用好的工具来生成所有必需的类。我个人使用这个网站:

http://easywsdl.com/

它支持相当复杂的web服务，并使用ksoap2。

Few months ago I was working with jax-ws web service in j2ee application, There we were using CXF wsdl2java to generate WS client stub from the WSDL file and with those client stubs we consumed the web services. Few weeks ago, when I was trying to consume the web service in the same way in android platform I couldn't, because the android jar has not all the "jax-ws" supporting classes in it. That time I didn't find any such tool ( if I wasn't failed to google efficiently) to meet my requirement --

从WSDL获取客户端存根。 并使用一些参数调用服务(java业务请求 对象)。 获取响应业务对象。

因此，我开发了自己的Android SOAP客户端生成工具。你需要遵循以下步骤:

从WSDL获取WS客户端存根，将其放入您的项目中。 例如，对于某些服务“ComplexOperationService”，实例化 Service，获取端点端口并调用服务方法，并从Web服务获取响应:

eg:

ComplexOperationService service = new ComplexOperationService( );
ComplexOperation port= service.getComplexOperationPort();    
SomeComplexRequest request = --Get some complex request----;    
SomeComplexResp resp = port.operate( request  );

您不需要关心服务类/请求/响应类或任何其他类以及方法，因为您知道它们都是从WSDL生成的。 当然，您不需要知道soap动作/信封/名称空间等等。就像我们开发人员一直做的那样调用这个方法。

如果可以，选择JSON。Android自带完整的组织。json包

我建议你查看一个非常有用的工具，它对我帮助很大。的人 负责那个项目的人也很有帮助。 www.wsdl2code.com/

我希望从Android调用web服务有帮助。

请下载并添加SOAP库文件与您的项目 文件名称:ksoap2-android-assembly-3.4.0-jar-with-dependencies

清理应用程序，然后启动程序

下面是SOAP服务调用的代码

    String SOAP_ACTION = "YOUR_ACTION_NAME";
    String METHOD_NAME = "YOUR_METHOD_NAME";
    String NAMESPACE = "YOUR_NAME_SPACE";
    String URL = "YOUR_URL";
    SoapPrimitive resultString = null;

    try {
        SoapObject Request = new SoapObject(NAMESPACE, METHOD_NAME);
        addPropertyForSOAP(Request);

        SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        soapEnvelope.dotNet = true;
        soapEnvelope.setOutputSoapObject(Request);

        HttpTransportSE transport = new HttpTransportSE(URL);

        transport.call(SOAP_ACTION, soapEnvelope);
        resultString = (SoapPrimitive) soapEnvelope.getResponse();

        Log.i("SOAP Result", "Result Celsius: " + resultString);
    } catch (Exception ex) {
        Log.e("SOAP Result", "Error: " + ex.getMessage());
    }
    if(resultString != null) {
        return resultString.toString();
    }
    else{
        return "error";
    }

结果可能是JSONObject或JSONArray或String

为方便参考， https://trinitytuts.com/load-data-from-soap-web-service-in-android-application/

谢谢。