Java 如何使用ksoap2将参数传递给Web服务？

我正在使用EclipseIDE开发一个android应用程序。我正在尝试连接到.net Web服务。我正在使用ksoap2 2.3版

当我调用一个没有参数的webmethod时，它可以正常工作。当我向webmethod传递参数时，我得到null（在调试我发现的webservice时），并且在客户端代码中从webmethod得到null

代码：

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为什么要得到空响应，如何使用ksoap2将参数传递给Web服务？

通过从j2me传递参数来调用Web服务

SoapObject request = new SoapObject("http://www.webserviceX.NET", "GetCitiesByCountry");
String soapAction = "http://www.webserviceX.NET/GetCitiesByCountry";

request.addProperty("CountryName", "india");
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.bodyOut = request;
envelope.dotNet = true;

HttpTransport ht = new HttpTransport("http://www.webservicex.net/globalweather.asmx");
ht.debug = true;
//System.err.println( ht.requestDump );

ht.call(soapAction,envelope);
System.out.println("####################: " +envelope.getResponse());
//SoapObject result = (SoapObject)envelope.getResponse();

而不是

    request.addProperty("a", "myprop"); 

试用

    request.addProperty("arg0", "myprop");         

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我不是ksoap2上的expect，但我非常确定这会为您的web服务函数设置第一个参数的值。这对我来说非常有效。

我已经用了两天时间，终于找到了解决方案。我提交了我的完整代码，希望这会有所帮助。它可以传递参数并获得响应

在.net C中的WebService文件中：

[WebService(Namespace = "http://something/webservice/v1")]

[WebMethod]
public DateTime[] Function(Guid organizationId, Guid categoryId)
    {
        return ...;
    }

private final static String URL = "http://something/WebServices/WebService.asmx";
private final static String NAMESPACE = "http://something/webservice/v1";


public ArrayList<Object> getSoapObject(String METHOD_NAME, String SOAP_ACTION, Map<String, String> parameters){

try {

        ArrayList<Object> sol = new ArrayList<Object>();
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        if(parameters != null){
            for (Entry<String, String> para : parameters.entrySet()) {
                request.addProperty(para.getKey(), para.getValue());
            }
        }

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet=true;
        envelope.setOutputSoapObject(request);

        Log.d("Body", envelope.bodyOut.toString());

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapObject result=(SoapObject)envelope.getResponse();

            for(int i = 0; i < result.getPropertyCount(); i++){
                sol.add(result.getProperty(i));
            }

            return sol;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }       
    }


    public void getMenuEndDate(String orgId, String categoryId){

        Date startDate = null;
        Date endDate = null;

        HashMap<String, String> parameters = new HashMap<String, String>();
        parameters.put("organizationId", orgId);
        parameters.put("categoryId", categoryId);


        ArrayList<Object> sol = getSoapObject("Function", "http://something/webservice/v1/Function", parameters);

        SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd");

        try {
            startDate = (Date)dateFormatter.parse(sol.get(0).toString());
            endDate = (Date)dateFormatter.parse(sol.get(1).toString());
        } catch (ParseException e) {
            Log.d(TAG, "Exception i Date-Formatering");
            e.printStackTrace();
        }

    }

安卓代码内部：

[WebService(Namespace = "http://something/webservice/v1")]

[WebMethod]
public DateTime[] Function(Guid organizationId, Guid categoryId)
    {
        return ...;
    }

private final static String URL = "http://something/WebServices/WebService.asmx";
private final static String NAMESPACE = "http://something/webservice/v1";


public ArrayList<Object> getSoapObject(String METHOD_NAME, String SOAP_ACTION, Map<String, String> parameters){

try {

        ArrayList<Object> sol = new ArrayList<Object>();
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);

        if(parameters != null){
            for (Entry<String, String> para : parameters.entrySet()) {
                request.addProperty(para.getKey(), para.getValue());
            }
        }

        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        envelope.dotNet=true;
        envelope.setOutputSoapObject(request);

        Log.d("Body", envelope.bodyOut.toString());

        HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapObject result=(SoapObject)envelope.getResponse();

            for(int i = 0; i < result.getPropertyCount(); i++){
                sol.add(result.getProperty(i));
            }

            return sol;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }       
    }


    public void getMenuEndDate(String orgId, String categoryId){

        Date startDate = null;
        Date endDate = null;

        HashMap<String, String> parameters = new HashMap<String, String>();
        parameters.put("organizationId", orgId);
        parameters.put("categoryId", categoryId);


        ArrayList<Object> sol = getSoapObject("Function", "http://something/webservice/v1/Function", parameters);

        SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd");

        try {
            startDate = (Date)dateFormatter.parse(sol.get(0).toString());
            endDate = (Date)dateFormatter.parse(sol.get(1).toString());
        } catch (ParseException e) {
            Log.d(TAG, "Exception i Date-Formatering");
            e.printStackTrace();
        }

    }

private最终静态字符串URL=”http://something/WebServices/WebService.asmx";
私有最终静态字符串命名空间=”http://something/webservice/v1";
公共ArrayList getSoapObject（字符串方法\u名称、字符串SOAP\u操作、映射参数）{
试一试{
ArrayList sol=新的ArrayList（）；
SoapObject请求=新的SoapObject（名称空间、方法名称）；
if（参数！=null）{
for（条目段：parameters.entrySet（））{
request.addProperty（para.getKey（），para.getValue（））；
}
}
SoapSerializationEnvelope=新的SoapSerializationEnvelope（SoapEnvelope.VER11）；
envelope.dotNet=true；
envelope.setOutputSoapObject（请求）；
Log.d（“Body”，envelope.bodyOut.toString（））；
HttpTransportSE androidHttpTransport=新的HttpTransportSE（URL）；
调用（SOAP_操作，信封）；
SoapObject结果=（SoapObject）envelope.getResponse（）；
对于（int i=0；i

检查事项：

• 命名的参数是否与Web服务中的预期参数完全相同
• 检查名称空间是否使用尾随“/”。在你的申请中也有同样的要求

---

试着注释这句话：

envelope.dotNet=true

---

我做了与您相同的事情，当我了解到此属性是一个非常丑陋的黑客行为时，出于测试目的，我对其进行了注释，我的参数正确通过。

您必须在客户端代码中声明参数类型：

SoapObject request = new SoapObject("http://tempuri.org/", "mymethod"); 
PropertyInfo p = new PropertyInfo();
p.setName("param_name_from_webservice");
p.setValue(true);
p.setType(Boolean.class);
request.addProperty(p);

---

在这里，你写的代码顺序有问题，别担心，试试这个，它对我有用

private class ConversionAsyncTask extends AsyncTask<Void,Void,Void> {
    private SoapPrimitive response;
    protected Void doInBackground(Void... params) {

        SoapObject request = new SoapObject(NAMESPACE, METHOD);


        request.addProperty("a","5");
        SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
        soapEnvelope.setOutputSoapObject(request);

        soapEnvelope.dotNet = true;
        soapEnvelope.implicitTypes = true;

        try {
            HttpTransportSE aht = new HttpTransportSE(URL);
            aht.call(SOAP_ACTION, soapEnvelope);

            response = (SoapPrimitive) soapEnvelope.getResponse();

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    protected void onPostExecute(Void result) {
        super.onPostExecute(result);
        temperatureTxt.setText("Status: " + response);
    }
}

私有类转换AsyncTask扩展AsyncTask{
私人原始反应；
受保护的Void doInBackground（Void…参数）{
SoapObject请求=新的SoapObject（名称空间、方法）；
请求。添加财产（“a”、“5”）；
SoapSerializationEnvelope soapEnvelope=新的SoapSerializationEnvelope（soapEnvelope.VER11）；
setOutputSoapObject（请求）；
soapEnvelope.dotNet=true；
soapEnvelope.implicitTypes=true；
试一试{
HttpTransportSE aht=新的HttpTransportSE（URL）；
aht.call（SOAP\u动作，soapEnvelope）；
响应=（SoapPrimitive）soapEnvelope.getResponse（）；
}捕获（例外e）{
e、 printStackTrace（）；
}
返回null；
}
受保护的void onPostExecute（void结果）{
super.onPostExecute（结果）；
TemperatureText.setText（“状态：+响应”）；
}
}

也许这个线程可以帮助我从零开始使用基于eclipse的ksoap2。