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我在 Java 中使用 Bluecove API 时遇到问题。我计划创建一个基本的 BT 监听器,以便从自制设备(由 Arduino 驱动)接收一些数据。我有以下很容易理解的代码:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

import javax.bluetooth.*;
import javax.microedition.io.*;

public class Bluetooth
{
    private void startServer() throws IOException
    {
    //Create a UUID for SPP
    UUID uuid = new UUID("1101", true);
    //Create the servicve url
    String connectionString = "btspp://localhost:" + uuid +";name=Magic Merlin Server";

    //open server url
    StreamConnectionNotifier streamConnNotifier = (StreamConnectionNotifier)Connector.open(connectionString);

    //Wait for client connection
    System.out.println("\nServer Started. Waiting for clients to connect...");
    StreamConnection connection = streamConnNotifier.acceptAndOpen();

    RemoteDevice dev = RemoteDevice.getRemoteDevice(connection);
    System.out.println("Remote device address: "+dev.getBluetoothAddress());
    System.out.println("Remote device name: "+dev.getFriendlyName(true));

    //read string from spp client
    InputStream inStream=connection.openInputStream();
    BufferedReader bReader=new BufferedReader(new InputStreamReader(inStream));
    String lineRead=bReader.readLine();
    System.out.println(lineRead);

    //send response to spp client
    OutputStream outStream = connection.openOutputStream();
    PrintWriter pWriter=new PrintWriter(new OutputStreamWriter(outStream));
    pWriter.write("Response String from SPP Server\r\n");
    pWriter.flush();
    pWriter.close();

    streamConnNotifier.close();
    }

    public static void main(String[] args) throws IOException
    {
    LocalDevice localDevice = LocalDevice.getLocalDevice();
    System.out.println("Address: "+localDevice.getBluetoothAddress());
    System.out.println("Name: "+localDevice.getFriendlyName());

    Bluetooth sampleSPPServer = new Bluetooth();
    sampleSPPServer.startServer();
    }
}

当我尝试执行我的代码时,我收到了这个奇怪的错误:

Exception in thread "main" javax.bluetooth.BluetoothStateException: BlueCove com.intel.bluetooth.BluetoothStackBlueZ not available
at com.intel.bluetooth.BlueCoveImpl.loadStackClass(BlueCoveImpl.java:342)
at com.intel.bluetooth.BlueCoveImpl.detectStack(BlueCoveImpl.java:427)
at com.intel.bluetooth.BlueCoveImpl.access$500(BlueCoveImpl.java:65)
at com.intel.bluetooth.BlueCoveImpl$1.run(BlueCoveImpl.java:1020)
at java.security.AccessController.doPrivileged(Native Method)
at com.intel.bluetooth.BlueCoveImpl.detectStackPrivileged(BlueCoveImpl.java:1018)
at com.intel.bluetooth.BlueCoveImpl.getBluetoothStack(BlueCoveImpl.java:1011)
at javax.bluetooth.LocalDevice.getLocalDeviceInstance(LocalDevice.java:75)
at javax.bluetooth.LocalDevice.getLocalDevice(LocalDevice.java:95)
at Bluetooth.main(Bluetooth.java:50)

第 50 行是LocalDevice localDevice = LocalDevice.getLocalDevice();.

我的计算机上有一个启用的 BT 加密狗,所以我对此感到非常失望。如果您对如何解决此问题有任何想法,那就太好了!

无论如何,感谢您阅读本主题。问候。

4

3 回答 3

8

如果这是在 Linux 上,您可以检查两件事:

  • net.sf.bluecove:bluecove-gpl:2.1.0的类路径中有吗?有关更多信息,请参阅内容。
  • 你有libbluetooth-dev安装包吗?不过,这可能是 Xubuntu 特有的。此包内含BlueZ,输入apt-cache show libbluetooth-dev查看说明。其他 Linux 发行版可能有一个等效的库

希望这可以帮助。

于 2012-10-27T19:10:58.347 回答
2

除了 bluecove-xxxjar 之外,其他任何遇到此问题的人都可能需要下载 bluecove-gpl-xxxjar。你可以在这里得到它,https://code.google.com/p/bluecove/downloads/list

于 2015-03-28T17:36:28.813 回答
0

最后,我找到了一种使用名为“GlovePie”的应用程序的更简单方法。它提供了一个非常简单的接口来检索传感器值并通过网络协议发送它。然后一个java程序听那个协议并获取值。

上述错误(在我的第一篇文章中)是 Bluecove 跟踪器上报告的常见问题。

于 2013-01-11T10:24:09.660 回答