关于这个问题，如果使用百度都是前篇一律的代码，好不容易上了google才找到完整的方法，这里讲所有的代码都贴出来与大家分享。

首先是.NET写的后台代码

/// 
    /// SoapHeader    /// 
    public class OwnSoapHeader:SoapHeader    {        public string UserName { get; set; }        public string Password { get; set; }    }/// 
    /// WebService1 的摘要说明    /// 
    [WebService(Namespace = "http://tempuri.org/")]    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]    [System.ComponentModel.ToolboxItem(false)]    // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消注释以下行。     // [System.Web.Script.Services.ScriptService]    public class WebService1 : System.Web.Services.WebService    {        public OwnSoapHeader OwnSoapHeader;        [WebMethod]        [SoapHeader("OwnSoapHeader")]        public string Login()        {            if (OwnSoapHeader != null)            {                return OwnSoapHeader.UserName + "," + OwnSoapHeader.Password;            }            return "尚未登录";        }    }

接下来是在浏览器中浏览查看我的接口，这里面有很重要的信息，包含了SoapHeader的名字以及参数

随后就是使用Ksoap2调用我的接口了

private void DoLogin() {        new Thread() {            @Override            public void run() {                Looper.prepare();                // TODO Auto-generated method stub                String sNameSpace = "http://tempuri.org/";                String sMethodName = "Login";                String sActionString = "http://tempuri.org/Login";                String sURL = "http://192.168.1.101:8088/WebService1.asmx";                SoapObject rpc = new SoapObject(sNameSpace, sMethodName);　　　　　　　　　　//在这里加入了SoapHeader                Element[] header = new Element[1]; 　　　　　　　　//OwnSoapHeader与上图红色标记处名字一致                header[0] = new Element().createElement(sNameSpace, "OwnSoapHeader "); 　　　　　　　　　　//UserName上图红色标记处名字一致                Element username = new Element().createElement(sNameSpace,                        "UserName");                username.addChild(Node.TEXT, "admin");                header[0].addChild(Node.ELEMENT, username); 　　　　　　　　　　//Password上图红色标记处名字一致                Element pass = new Element().createElement(sNameSpace,                        "Password");                pass.addChild(Node.TEXT, "123");                header[0].addChild(Node.ELEMENT, pass);                SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(                        SoapEnvelope.VER12);                envelope.headerOut = header;                envelope.bodyOut = rpc;                envelope.dotNet = true;                envelope.setOutputSoapObject(rpc);                HttpTransportSE ht = new HttpTransportSE(sURL);                SoapObject soapObject = null;                try {                    ht.call(sActionString, envelope);                    soapObject = (SoapObject) envelope.bodyIn;                } catch (IOException ex) {                    // TODO Auto-generated catch block                    ex.printStackTrace();                } catch (XmlPullParserException ex) {                    // TODO Auto-generated catch block                    ex.printStackTrace();                }                Bundle result = new Bundle();                if (soapObject != null) {                    result.putString("result", soapObject.toString());                } else {                    result.putString("result", sURL);                }                Message msg = new Message();                msg.setData(result);                msg.what = 1;                handler.handleMessage(msg);                Looper.loop();            }        }.start();    }    Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            // TODO Auto-generated method stub            if (msg.what == 1) {                Bundle result = msg.getData();                String text = result.getString("result");                Toast.makeText(MainActivity.this, text, Toast.LENGTH_LONG)                        .show();            }        }    };

 至此已经全部OK了，能够接收到服务端回发的用户数据