Question

我正在开发一个小型黑莓项目。

以下是应该采取的步骤：

用户点击发言！按钮。应用程序记录语音。 [没问题]
用户完成发言后，点击停止！按钮。单击停止按钮后，语音将作为AMR文件保存在BB上。然后，该文件将通过ksoap2发送到Web服务。 Web服务将作为文件名字符串返回响应。问题是 Web服务什么都不返回并且发生错误：JVM错误104：未捕获NullPointerException 我想知道我是否将代码放在正确的位置，或者我对ksoap2做错了什么？

这是Web服务的代码

namespace VoiceServer
{
    /// <summary>
    /// Converting AMR to WAV
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]

    public class Service1 : System.Web.Services.WebService
    {

        public string UploadFile(String receivedByte, String location, String fileName)
{
    String filepath = fileName;

/*don't worry about receivedByte and location, I will work on them after the problem is     solved :) */

    return "Success"+filepath;
}

        private void InitializeComponent()
        {

        }
    }
}

下面是在Eclipse上运行的代码，我不确定是否在正确的位置放置了将文件发送到Web服务的代码。

public class MyAudio extends MainScreen {
private ButtonField _startRecordingButton;
private ButtonField _stopRecordingButton;
private HorizontalFieldManager _fieldManagerButtons;
private VoiceNotesRecorderThread _voiceRecorder;
private LabelField _myAudioTextField;
private DateField hourMin;
private long _initTime;

public MyAudio() {
    _startRecordingButton = new ButtonField("Speak!", ButtonField.CONSUME_CLICK);
    _stopRecordingButton = new ButtonField("Stop!", ButtonField.CONSUME_CLICK);
    _fieldManagerButtons = new  HorizontalFieldManager();
    _voiceRecorder = new VoiceNotesRecorderThread(500000,"file:///store/home/user/voicefile.amr",this);
    _voiceRecorder.start();

    myButtonFieldChangeListener buttonFieldChangeListener = new myButtonFieldChangeListener();
    _startRecordingButton.setChangeListener(buttonFieldChangeListener);     
    _stopRecordingButton.setChangeListener(buttonFieldChangeListener);      

    _fieldManagerButtons.add(_startRecordingButton);
    _fieldManagerButtons.add(_stopRecordingButton);

    _myAudioTextField = new LabelField(" Welcome to VoiceSMS!!!" );
    add(_fieldManagerButtons);
    add(_myAudioTextField);

    SimpleDateFormat sdF = new SimpleDateFormat("ss");
    hourMin = new DateField("", 0, sdF);
    hourMin.setEditable(false);
    hourMin.select(false);
    _initTime = System.currentTimeMillis();
    add(hourMin);
}

public void setAudioTextField(String text) {
    _myAudioTextField.setText(text);
}

public void startTime() {
    _initTime = System.currentTimeMillis();
    hourMin.setDate(0);
}

public void updateTime() {
    hourMin.setDate((System.currentTimeMillis()-_initTime));
}

class myButtonFieldChangeListener implements FieldChangeListener{
    public void fieldChanged(Field field, int context) {
        if(field == _startRecordingButton) {
            try {
                _voiceRecorder.startRecording();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }else if(field == _stopRecordingButton) {
            _voiceRecorder.stopRecording();

            //----------Send AMR to Web Service-------------//

            Object response = null;
            String URL = "http://http://localhost:portnumber/Service1.asmx";
            String method = "UploadFile";
            String NameSpace = "http://tempuri.org/";
            FileConnection fc = null;
            byte [] ary = null;
            try 
            {
            fc = (FileConnection)Connector.open("file:///store/home/user/voicefile.amr",Connector.READ_WRITE);
            int size = (int) fc.fileSize();
            //String a = Integer.toString(size);
            //Dialog.alert(a);
            ary = new byte[size];
            fc.openDataInputStream().read(ary);
            fc.close();
            }
            catch (IOException e1) 
            {
            e1.printStackTrace();
            }
            SoapObject client = new SoapObject(NameSpace,method);
            client.addProperty("receivedByte",new SoapPrimitive(SoapEnvelope.ENC,"base64",Base64.encode(ary)));
            client.addProperty("location","Test/");
            client.addProperty("fileName","file:///store/home/user/voicefile.amr");
            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
            envelope.bodyOut = client;
            HttpTransport http = new HttpTransport(URL);

            try 
            {
            http.call(method,envelope);
            }
            catch(InterruptedIOException io)
            {
            io.printStackTrace();
            }
            catch (IOException e) 
            {
            System.err.println(e);
            }
            catch (XmlPullParserException e) 
            {
            System.err.println(e);

            }
            catch(OutOfMemoryError e)
            {
            System.out.println(e.getMessage());
            }
            catch(Exception e)
            {
            e.printStackTrace();
            }

            try 
            {
            response = envelope.getResponse();
            Dialog.alert(response.toString());
            }
            catch (SoapFault e) 
            {
            System.err.println(e);
            System.out.println("Soap Fault");
            }
            catch(NullPointerException ne)
            {
            System.err.println(ne);
            }
            Dialog.alert(response.toString());
            //Dialog.alert("Send Success");

            //----------End of Upload-to-Web-Service--------//
        }           
    }
}
}

我不知道该文件是否未发送到Web服务，或者Web服务是否已获得该文件并且没有响应？我是BB编程的真正新手。如果我做错了，请告诉我。

提前致谢!!!

Answer 1

您的网址变量值中存在拼写错误。

“http：//”输入两次

String URL =“http：// http：// localhost：portnumber / Service1.asmx”;

Answer 2

万岁!!!解决了问题！

刚刚更改了Rafael建议的URL，并在Web服务代码中将“WebMethod”添加到“public string UploadFile”上面

将文件从backberry上传到Web服务= JVM错误104 Uncaught NullPointerException？

2 个答案: