关于ksoap连接webService的问题

public byte[]  getTranferFileString(String filename,int ImageType,int index){String fileContent = "";String fileContent1="";byte[] data=null;//参数表示为 WebService命名空间，第二个参数为WebService里面的方法名称SoapObject soapObject = new SoapObject(targetNameSpace,getTranferFileStringWithEncode);//soapObject.addProperty("str", "fuck it");soapObject.addProperty("ImageType",ImageType );soapObject.addProperty("index", index);SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);    //增加参数        envelope.dotNet = false;envelope.setOutputSoapObject(soapObject);HttpTransportSE httpTranstation=new HttpTransportSE(WSDL);try {//使用call 方法调用webservice方法httpTranstation.call(null, envelope);//httpTranstation.call(null, envelope);Object  result =envelope.bodyIn;//getResponse(); fileContent=result.toString(); fileContent1=fileContent.substring(40, fileContent.length());//fileContent=result.toString();//String strFile="downfromserive"+Math.random()+".png";     data=FileOperate.jiemi(fileContent1);//FileOperate.xmlString2Bin(fileContent1, new File(filename)); //  也可以通过下面方式获得str    //  SoapPrimitive  result = (SoapPrimitive ) envelope.getResponse();     //str=result.toString();     //   直指value字符串值} catch (IOException e) {e.printStackTrace();Log.i("AppClient", "UpAndDown.java"+e.toString());} catch (XmlPullParserException e) {e.printStackTrace();Log.i("AppClient", "UpAndDown.java"+e.toString());}return data;}

此处要注意的一点是，如果webservice的返回值是byte类型的，应该用SoapObject result =(SoapObject)envelope.bodyIn;//getResponse(); 如果是String类型的则用 Object result=envelope.bodyIn; 否则会报错！