如何使用KSOAP2从Android调用.NET Webservice？

Question

我在调用webservice时遇到问题.我在服务器上有一个.NET Web服务,我在Android中使用KSOAP2(ksoap2-j2se-full-2.1.2).在运行程序时,我得到了一个运行时异常,如"org.ksoap2.serialization.SoapPrimitive".我该怎么办？

这是我的代码.

package projects.ksoap2sample;

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;

import android.app.*;
import android.os.*;
import android.widget.TextView;

public class ksoap2sample extends Activity {
    /** Called when the activity is first created. */
    private static final String SOAP_ACTION = "http://tempuri.org/HelloWorld";
    private static final String METHOD_NAME = "HelloWorld";
    private static final String NAMESPACE = "http://tempuri.org/";
    private static final String URL = "http://192.168.1.19/TestWeb/WebService.asmx";
    TextView tv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tv=(TextView)findViewById(R.id.text1);

        try {
            SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

            //request.addProperty("prop1", "myprop");

            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
            envelope.dotNet=true;
            envelope.setOutputSoapObject(request);

            HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

            androidHttpTransport.call(SOAP_ACTION, envelope);

            Object result = (Object)envelope.getResponse();

            String[] results = (String[])  result;
            tv.setText( ""+results[0]);
        }
        catch (Exception e) {
            tv.setText(e.getMessage());
        }
    }
}

Answer 1

这很简单.你得到的结果Object是一个原始的结果.

你的代码:

Object result = (Object)envelope.getResponse();

正确的代码:

SoapObject result=(SoapObject)envelope.getResponse();

//To get the data.
String resultData=result.getProperty(0).toString();
// 0 is the first object of data.

我认为这绝对有用.

Answer 2

您的.NET Webservice如何？

我使用code.google.com中的ksoap 2.3获得了相同的效果.我按照代码项目的教程(这是很棒的BTW).

每次我使用

    Integer result = (Integer)envelope.getResponse();

得到我的webservice的结果(无论类型,我尝试了Object,String,int)我遇到了org.ksoap2.serialization.SoapPrimitive异常.

我找到了解决方案(解决方法).我要做的第一件事是从我的webservice方法中删除"SoapRpcMethod()属性.

    [SoapRpcMethod(), WebMethod]
    public Object GetInteger1(int i)
    {
        // android device will throw exception
        return 0;
    }

    [WebMethod]
    public Object GetInteger2(int i)
    {
        // android device will get the value
        return 0;
    }

然后我将我的Android代码更改为:

    SoapPrimitive result = (SoapPrimitive)envelope.getResponse();

但是,我得到一个SoapPrimitive对象,它有一个私有的"值"字段.幸运的是,值通过该toString()方法传递,因此我Integer.parseInt(result.toString())用来获取我的值,这对我来说已经足够了,因为我没有任何需要从我的Web服务获得的复杂类型.

这是完整的来源:

private static final String SOAP_ACTION = "http://tempuri.org/GetInteger2";
private static final String METHOD_NAME = "GetInteger2";
private static final String NAMESPACE = "http://tempuri.org/";
private static final String URL = "http://10.0.2.2:4711/Service1.asmx";

public int GetInteger2() throws IOException, XmlPullParserException {
    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

    PropertyInfo pi = new PropertyInfo();
    pi.setName("i");
    pi.setValue(123);
    request.addProperty(pi);

    SoapSerializationEnvelope envelope =
        new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.dotNet = true;
    envelope.setOutputSoapObject(request);

    AndroidHttpTransport androidHttpTransport = new AndroidHttpTransport(URL);
    androidHttpTransport.call(SOAP_ACTION, envelope);

    SoapPrimitive result = (SoapPrimitive)envelope.getResponse();
    return Integer.parseInt(result.toString());
}

Answer 3

Typecast SoapPrimitive的信封:

SoapPrimitive result = (SoapPrimitive)envelope.getResponse();
String strRes = result.toString();

它会起作用.