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。您将结果导入Object，这是一个原始的。

您的代码：

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ksoap 2.3 from code.google.com获得了相同的效果。我按照The Code Project上的教程（这是很棒的BTW。）

每次我使用

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

获取我的webservice的结果（无论类型如何，我都尝试了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）。我要做的第一件事就是从我的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，该值通过toString()方法传递，因此我使用Integer.parseInt(result.toString())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Web获取的复杂类型服务。

以下是完整资料来源：

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

向SoapPrimitive输入信封：

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

它会起作用。

Answer 4

您可以使用以下代码调用Web服务并获得响应。请确保您的Web服务以数据表格式返回响应..如果您使用 SQL Server 数据库。如果你使用 MYSQL ，你需要改变一件事，只需用 DocumentElement替换句子obj2=(SoapObject) obj1.getProperty("NewDataSet");中的单词 NewDataSet

private static final String NAMESPACE = "http://tempuri.org/"; private static final String URL = "http://localhost/Web_Service.asmx?"; // you can use IP address instead of localhost private static final String METHOD_NAME = "Function_Name"; private static final String SOAP_ACTION = NAMESPACE + METHOD_NAME; SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); request.addProperty("parm_name", prm_value); // Parameter for Method SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; envelope.setOutputSoapObject(request); HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); try { androidHttpTransport.call(SOAP_ACTION, envelope); //call the eb service Method } catch (Exception e) { e.printStackTrace(); } //Next task is to get Response and format that response SoapObject obj, obj1, obj2, obj3; obj = (SoapObject) envelope.getResponse(); obj1 = (SoapObject) obj.getProperty("diffgram"); obj2 = (SoapObject) obj1.getProperty("NewDataSet"); for (int i = 0; i < obj2.getPropertyCount(); i++) //the method getPropertyCount() return the number of rows { obj3 = (SoapObject) obj2.getProperty(i); obj3.getProperty(0).toString(); //value of column 1 obj3.getProperty(1).toString(); //value of column 2 //like that you will get value from each column }

如果您对此有任何疑问，可以写信给我。

Answer 5

如果预计会有多个结果，那么getResponse()方法将返回包含各种回复的Vector。

在这种情况下违规代码变为：

Object result = envelope.getResponse();

// treat result as a vector
String resultText = null;
if (result instanceof Vector)
{
    SoapPrimitive element0 = (SoapPrimitive)((Vector) result).elementAt(0);
    resultText = element0.toString();
}

tv.setText(resultText);

根据ksoap2-android (mosabua fork)

回答

Answer 6

我想你不能打电话

 androidHttpTransport.call(SOAP_ACTION, envelope);

主线程上的

。

Network operations should be done on different Thread.

创建另一个Thread或AsyncTask来调用该方法。

如何使用KSOAP2从Android调用.NET Webservice？

6 个答案: