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。