Question

我正在尝试从Android应用程序设置与SOAP WebService的连接，但每次我在结果中出错：对象引用未设置为对象java的实例它似乎是来自服务器的错误 - ＆gt; SOAP Webservice call from Java gives "Object reference not set to an instance of an object"

但是，当我通过带有POST请求的Web浏览器进行尝试时，它可以正常工作：）

此服务http://ws.cdyne.com/ip2geo/ip2geo.asmx?op=ResolveIP

private static String NAMESPACE = "http://ws.cdyne.com/";
private static String URL = "http://ws.cdyne.com/ip2geo/ip2geo.asmx";
private static String SOAP_ACTION = "http://ws.cdyne.com/";

public static String invokeHelloWorldWS(String name, String webMethName) {
    String resTxt = null;

    SoapObject request = new SoapObject(NAMESPACE, webMethName);
    PropertyInfo sayHelloPI = new PropertyInfo();
    // Set name
    sayHelloPI.setName("ipAddress");
    // Set Value
    sayHelloPI.setValue("88.212.35.129");
    // Set dataType
    sayHelloPI.setType(String.class);
    // Add the property to request object
    request.addProperty(sayHelloPI);
    // Create envelope
    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.dotNet = true;  
    // Set output SOAP object
    envelope.setOutputSoapObject(request);
    // Create HTTP call object
    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
    androidHttpTransport.debug = true;
    try{
        // Invoke web service
        androidHttpTransport.call(SOAP_ACTION+webMethName, envelope);  //webMethName = "ResolveIP"
        // Get the response
        Log.d("a", androidHttpTransport.responseDump);
        //SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
        // Assign it to resTxt variable static variable
        //resTxt = response.toString();
    }catch(Exception e){
         //Print error
        e.printStackTrace();
    }
}

我花了很多时间在谷歌但我无法找到正确答案为什么会发生这种情况

//编辑最后我说对了... idk为什么但是当我发送这样的第二个参数时（我重用旧属性）：

sayHelloPI.setName("licenseKey");
sayHelloPI.setValue("some_key");
sayHelloPI.setType(String.class);
request.addProperty(sayHelloPI);

它没有工作。但是当我创建新的Property对象时，它可以工作：

PropertyInfo sayHelloPI1 = new PropertyInfo();
sayHelloPI1.setName("licenseKey");
sayHelloPI1.setValue("ds");
sayHelloPI1.setType(String.class);
request.addProperty(sayHelloPI1);

下次可能会帮助别人

Answer 1

这是我自己使用的一些代码 - 希望它能帮到你：

        // Initialize soap request + add parameters
        SoapObject request = new SoapObject(getString(R.string.Namespace),
                getString(R.string.Method_Name_GetStudentsByTeam));
        Log.d("GetStudentsByTeamTask", "SOAP request");

        // Use this to add parameters
        request.addProperty("teamId", params[0]);
        Log.d("GetStudentsByTeamTask", "id: " + params[0]);

        // Declare the version of the SOAP request
        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        Log.d("GetStudentsByTeamTask",
                "Declared the version of the SOAP request");

        envelope.setOutputSoapObject(request);
        envelope.dotNet = true;
        Log.d("GetStudentsByTeamTask", "Setting som variables");
        try {
            HttpTransportSE androidHttpTransport = new HttpTransportSE(
                    getString(R.string.URL));
            Log.d("GetStudentsByTeamTask", "Instance the HttpTransportSE");

            // this is the actual part that will call the webservice
            androidHttpTransport.call(
                    getString(R.string.Soap_Action_GetStudentsByTeam),
                    envelope);
            Log.d("GetStudentsByTeamTask", "Called the Webservice");

            // Get the SoapResult from the envelope body.
            SoapObject result = (SoapObject) envelope.getResponse();
            Log.d("GetStudentsByTeamTask", "Got the Soapresult");

            if (result != null) {
                // Do something with result
                // success = true;
                Log.d("GetStudentsByTeamTask", "set sucess boolean to true");

                for (int i = 0; i < result.getPropertyCount(); i++) {

                    PropertyInfo pi = new PropertyInfo();
                    result.getPropertyInfo(i, pi);
                    Log.d("GetStudentsByTeamTask",
                            pi.name + " : " + result.getProperty(i));

                    SoapObject obj = (SoapObject) result.getProperty(i);

                    Student student = new Student();

                    student.address = obj.getProperty("Address").toString();

                    student.city = obj.getProperty("City").toString();
                    student.created = DateTime.parse(obj.getProperty(
                            "Created").toString());
                    student.dateOfBirth = DateTime.parse(obj.getProperty(
                            "DateOfBirth").toString());
                    student.email = obj.getProperty("Email").toString();
                    student.firstname = obj.getProperty("FirstName")
                            .toString();
                    student.id = Integer.parseInt(obj.getProperty("ID")
                            .toString());
                    student.imageId = Integer.parseInt(obj.getProperty(
                            "ImageID").toString());
                    // SoapObject lastNameObject = (SoapObject) obj
                    // .getProperty("LastName");
                    //
                    student.lastName = obj.getProperty("LastName")
                            .toString();

                    student.phone = obj.getProperty("Mobile").toString();

                    student.zipcode = obj.getProperty("PostalCode")
                            .toString();
                    student.schoolId = Integer.parseInt(obj
                            .getPropertyAsString("SchoolId"));
                    student.teamId = Integer.parseInt(obj
                            .getPropertyAsString("TeamId"));
                    student.testStarted = Integer.parseInt(obj
                            .getPropertyAsString("TestsStarted"));
                    student.timeStamp = DateTime.parse(obj
                            .getPropertyAsString("TimeStamp"));
                    student.image = getImage(Integer.parseInt(obj
                            .getProperty("ImageID").toString()));

                    if (student.image == null)
                        student.image = BitmapFactory
                                .decodeResource(getResources(),
                                        R.drawable.default_usericon);

                    MyApp.getController().addStudent(student);
                }

            } else {
                // If fails
                // success = false;
                Log.d("GetStudentsByTeamTask", "set login boolean to false");
            }
        } catch (Exception e) {
            Log.d("GetStudentsByTeamTask", "FAILED! " + e.getMessage());
            e.printStackTrace();
        }

（JAVA）SOAP WebService错误对象引用未设置为对象的实例

1 个答案: