Question

我从我的Android客户端应用程序调用一个Web服务。在我尝试显示它时获得响应后，我得到了ClassCastException。以下是我的代码：

public void onClick(View v) {
  setContentView(R.layout.report);
  SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
  EpcDetails epcdetails=new EpcDetails();
  epcdetails.setEpcId(input_val.getText().toString());

        request.addProperty("id", id
        SoapSerializationEnvelope sse=new SoapSerializationEnvelope(SoapEnvelope.VER11);
        sse.setOutputSoapObject(request);

        sse.addMapping(NAMESPACE, 
        ProductDetailsRequest.ProductDetailsRequest.getSimpleName(),
        ProductDetailsRequest.ProductDetailsRequest);

        sse.implicitTypes=true;
        sse.setAddAdornments(false);
        AndroidHttpTransport aht=new AndroidHttpTransport(URL);

        try 
        {
         aht.call(SOAP_ACTION, sse);
         SoapObject response= (SoapObject) sse.getResponse();
         item_code.setText((CharSequence)(response.getProperty(6)));
         desc.setText((CharSequence) (response.getProperty(5)));
         price.setText(calc_price.toString());

        } catch (IOException e) 
        {
         e.printStackTrace();
        } catch (XmlPullParserException e)
        {
          e.printStackTrace();
       }

我在 item_code.setText（（CharSequence）（response.getProperty（6）））获取了Exception 如

12-20 19:26:12.864: ERROR/AndroidRuntime(811): FATAL EXCEPTION: main
12-20 19:26:12.864: ERROR/AndroidRuntime(811): java.lang.ClassCastException: org.ksoap2.serialization.SoapPrimitive
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at com.trueVUE.modules.report.MainSimulation.onClick(MainSimulation.java:123)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at android.view.View.performClick(View.java:2408)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at android.view.View$PerformClick.run(View.java:8816)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at android.os.Handler.handleCallback(Handler.java:587)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at android.os.Handler.dispatchMessage(Handler.java:92)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at android.os.Looper.loop(Looper.java:123)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at android.app.ActivityThread.main(ActivityThread.java:4627)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at java.lang.reflect.Method.invokeNative(Native Method)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at java.lang.reflect.Method.invoke(Method.java:521)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
12-20 19:26:12.864: ERROR/AndroidRuntime(811):     at dalvik.system.NativeStart.main(Native Method)

请尽快推荐一些解决方案。

此致拉胡

Answer 1

因为您的Web服务返回的类型是String，所以您可以这样解决：

Object  response=  sse.getResponse();

当您的Web服务返回值类型为byte []时，您可以执行此操作

SoapObject response=(SoapObject)envelope.bodyIn;

Answer 2

可能是您的Web服务正在返回一个XML对象，该对象在客户端导致ClassCastException，因为KSOAP不支持它，尝试将Web服务的结果作为String返回（最好使用CDATA）并且您的问题将得到解决。

Answer 3

此question对您有所帮助。

您需要使用getString（）将返回的属性转换为String：

item_code.setText(response.getProperty(6).toString());

java.lang.ClassCastException：org.ksoap2.serialization.SoapPrimitive？

3 个答案: