通过蓝牙发送消息：PC作为客户端

Android  server端代码：

public class BluetoothServerThread extends Thread{
	private BluetoothAdapter adapter = null;
	private UUID uuid = UUID.fromString("04c6093b-0000-1000-8000-00805f9b34fb");
	private BluetoothServerSocket serverSocket;
	
	@Override
	public void run() {
		try{
			adapter = BluetoothAdapter.getDefaultAdapter();
			
			//没有蓝牙设备
			if(adapter == null){
				throw new RuntimeException("Bluetooth not support!");
			}
			
			//打开蓝牙
			if(!adapter.isEnabled()){
				adapter.enable();
			}
			
			serverSocket = adapter.listenUsingRfcommWithServiceRecord("Name", uuid);
			
			while(true){
				BluetoothSocket socket = serverSocket.accept();
				executorService.execute(new SocketThread(socket));
			}
			
		}catch(Exception ex){
			logger.error("Run BluetoothServerThread Error", ex);
			stopServer();
		}
	}
	
	public void stopServer(){			
		if(serverSocket != null){
			try {
				serverSocket.close();
				serverSocket = null;
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}

SocketThread代码：

class SocketThread implements Runnable{
	private BluetoothSocket socket;
	
	public SocketThread(BluetoothSocket socket){
		this.socket = socket;
	}
	
	@Override
	public void run() {
		BufferedReader reader = null;
		PrintWriter writer = null;
		try{
			reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
			writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
			
			while(true){
				String msg = reader.readLine();
				logger.info(msg); 
				
				writer.write("This message from server\r\n");
				writer.flush();
			}
		}catch(Exception ex){
			logger.error("SocketThread Error", ex);
			
			if(socket != null){
				try {
					socket.close();
					socket = null;
				} catch (IOException ex2) {
					logger.error("Close Socket Error", ex2);
				}
			}
		}
	}
}

PC 客户端代码：

UUID uuid = new UUID("04c6093b00001000800000805f9b34fb", false);
DiscoveryAgent agent = LocalDevice.getLocalDevice().getDiscoveryAgent();
String connectionURL = agent.selectService(uuid, ServiceRecord.AUTHENTICATE_ENCRYPT, false);

StreamConnection connection = null;
PrintWriter writer = null;
BufferedReader reader = null;
try{
	connection = (StreamConnection)Connector.open(connectionURL);
	reader = new BufferedReader(new InputStreamReader(connection.openInputStream()));
	writer = new PrintWriter(new OutputStreamWriter(connection.openOutputStream()));
	
	writer.write("This message from client\r\n");
	writer.flush();
	
	String data = reader.readLine();
	System.out.println(data);
	
}catch(Exception ex){
	ex.printStackTrace();
}