android - 适用于 Android 的 KSOAP2 提供

Question

我正在尝试访问其 WSDL 位于 http://srilanka.lk:9080/services/CropServiceProxy?wsdl 的 Web 服务.使用 SoapUI 我发送了一个请求并成功地得到了响应。

然后我尝试使用适用于 Android 的 KSoap2 获得响应。但我得到的只是一个 SoapFault 错误。代码如下。

String NAMESPACE = "http://schemas.icta.lk/xsd/crop/handler/v1";

    String URL = "http://www.srilanka.lk:9080/services/CropServiceProxy.CropServiceProxyHttpSoap12Endpoint";

    String method_name = "getCropDataList";
    String SOAP_ACTION = method_name;

    SoapObject request = new SoapObject(NAMESPACE, method_name);
    String crop_code_str = String.valueOf(code.getText().toString());
    System.out.println(crop_code_str);
    System.out.println(request.toString());
    request.addProperty("code", crop_code_str );
    System.out.println(request.getProperty("code").toString());

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12);
    envelope.setOutputSoapObject(request);

    System.out.println("body out : " + envelope.bodyOut.toString());

    HttpTransportSE http_transport  = new HttpTransportSE(URL);
    try {
        http_transport.call(SOAP_ACTION, envelope);
        System.out.println(envelope.bodyIn.toString());

    } catch (Exception e) {
        e.printStackTrace();
        answer.setText("error caught");
    }

结果如下。

W/System.err(  394): org.xmlpull.v1.XmlPullParserException: expected: START_TAG {http://www.w3.org/2001/12/soap-envelope}Envelope (position:START_TAG <{http://schemas.xmlsoap.org/soap/envelope/}soapenv:Envelope>@1:114 in java.io.InputStreamReader@43e81258)  

我尝试使用 VER11，但它随后将以下错误作为 bodyIn。

I/System.out(  365): SoapFault - faultcode: 'soapenv:Server' faultstring: 'org.apache.axis2.databinding.ADBException: Unexpected subelement code' faultactor: 'null' detail: org.kxml2.kdom.Node@43e84648

Ksoap2 for android 有什么问题吗？那么有没有另一种方式可以在 Android 中使用 Web 服务？ (只有 SOAP 可用)

更新:我尝试了复杂类型的 KvmSerializable 接口(interface)。以下是我的代码。我仍然遇到同样的错误。在 http_transport.call 行抛出 XMLPullParser 错误。

这是客户端的复杂类型实现。我只有 WSDL。

public class CropInfo implements KvmSerializable {

    private String name;
    private float price;
    private String location;

    @Override
    public Object getProperty(int arg0) {
        switch (arg0){
        case 0:
            return name;
        case 1:
            return price;
        case 2:
            return location;
        default:
                return null;
        }
    }

    @Override
    public int getPropertyCount() {
        return 3;
    }

    @Override
    public void getPropertyInfo(int arg0, Hashtable arg1, PropertyInfo arg2) {
        switch (arg0){
        case 0:
            arg2.type = PropertyInfo.STRING_CLASS;
            arg2.name = "Name";
            break;
        case 1:
            arg2.type = Float.class;
            arg2.name = "Price";
            break;
        case 2:
            arg2.type = PropertyInfo.STRING_CLASS;
            arg2.name = "Location";
            break;
        default:
                break;
        }

    }

    @Override
    public void setProperty(int arg0, Object arg1) {
        switch(arg0){
        case 0:
            name = arg1.toString();
            break;
        case 1:
            price = Float.parseFloat(arg1.toString());
        case 2:
            location = arg1.toString();
        default:
            break;
        }
    }
}

访问和解析 Web 服务响应的修改代码。

String NAMESPACE = "http://schemas.icta.lk/xsd/crop/handler/v1/"; 字符串 URL = "http://www.srilanka.lk:9080/services/CropServiceProxy.CropServiceProxyHttpSoap12Endpoint"; String method_name = "getCropDataList"; 字符串 SOAP_ACTION = "http://schemas.icta.lk/xsd/crop/handler/v1/getCropDataList";

    SoapObject soap_request = new SoapObject(NAMESPACE, method_name);
    String crop_code_str = String.valueOf(code.getText().toString());
    System.out.println(crop_code_str);
    System.out.println(soap_request.toString());
    soap_request.addProperty("code", crop_code_str );
    System.out.println(soap_request.getProperty("code").toString());

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER12);
    envelope.setOutputSoapObject(soap_request);
    envelope.addMapping(NAMESPACE, "cropInfo", CropInfo.class);
    //envelope.dotNet=true;

    Marshal floatMarshal = new MarshalFloat();
    floatMarshal.register(envelope);

    System.out.println("body out : " + envelope.bodyOut.toString());

    //AndroidHttpTransport http_transport = new AndroidHttpTransport(URL);
    HttpTransportSE http_transport  = new HttpTransportSE(URL);
    try {
                //error comes from this call            
                http_transport.call(SOAP_ACTION, envelope);


        Vector<CropInfo> result_array = (Vector<CropInfo>)envelope.getResponse();
        if(result_array != null){
            for (CropInfo current_crop: result_array){
                System.out.println(current_crop.getName());
                System.out.println(Float.toString(current_crop.getPrice()));
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
        answer.setText("error caught");
    }

Answer 1

我读过很多关于使用 KSoap 的痛苦和不一致的话题。您可以使用 DefaultHttpClient 类来执行 http 发布，只需手动制作 SOAP header 并解析响应。