在Android中通过ksoap2发送和接收复杂数据[序列化错误]

class MonitorDetail implements Serializable{
    String name;
    //Long, Short, String (...)
}

class MonitorResponse implements Serializable{
    Short returnCode;
    MonitorDetail monitorCodeList; //the request can request more than 1 monitor info.
    String user;
}

class MonitorRequest implements Serializable {
    Integer storeCode;
    Short categoryCode;
    Long[] monitorCodeList; //here I post the code of the monitors I need
    String user;
    //getters and setters
}

SoapObject request = new SoapObject(NAMESPACE, OPERATION);
request.addProperty(PROPERTY, getProductConfiguredMonitorRequest());

SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

HttpTransportSE httpTransport = new HttpTransportSE(URL);
enter code here
try {
    httpTransport.call(\"\", envelope);
    SoapObject result = (SoapObject) envelope.bodyIn;
    return extractMonitorDetailFromResult(result);
} catch (Exception e) {
    /* a lot of stuff */
    return null;
}
return null;