ksoap2 报错：org.xmlpull.v1.XmlPullParserException: unexpected type

Android中，引用ksoap2工具调用webservice，报错提示：

org.xmlpull.v1.XmlPullParserException: unexpected type

多次尝试之后解决问题：修改版本信息，V12改为V11

/*
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapSerializationEnvelope.VER12);
*/
//改为
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapSerializationEnvelope.VER11);

问题解决。