Android Web Service调用突然停止工作

Question

我有以下代码工作了好几个月......突然间它停止工作了：

这是我得到的错误： org.xmlpull.v1.XmlPullParserException：expected：START_TAG {http://schemas.xmlsoap.org/soap/envelope/}Envelope（位置：START_TAG @ 1：6 in java.io.InputStreamReader@4494c480）

有人知道为什么...... ??

    try
    {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
        request.addProperty("ZIP", zipcode);
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        Object result = envelope.getResponse();
        WeatherResult = result.toString();

    } catch (Exception E)
    {
        E.printStackTrace();
    }