在PC平台上用JAVA实现蓝牙通信，我们一般要使用BlueCove包。BlueCove下载地址是：

https://sourceforge.net/projects/bluecove/files/

官网地址是：

http://www.bluecove.org/

蓝牙通信的原理

蓝牙技术规定每一对设备之间进行蓝牙通讯时，必须一个为主角色，另一为从角色，才能进行通信，通信时，必须由主端进行查找，发起配对，建链成功后，双方即可收发数据。

蓝牙主端设备发起呼叫，首先是查找，找出周围处于可被查找的蓝牙设备。主端设备找到从端蓝牙设备后，与从端蓝牙设备进行配对，此时需要输入从端设备的PIN码，也有设备不需要输入PIN码。

配对完成后，从端蓝牙设备会记录主端设备的信任信息，此时主端即可向从端设备发起呼叫，已配对的设备在下次呼叫时，不再需要重新配对。

在通信中，我们把主端成为客户端，从端称为服务端。这里给出用于蓝牙通信的客户端和服务端实现框架类，具体使用方法，见下一节。

（1）客户端框架类代码：

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.Set;
import javax.bluetooth.RemoteDevice;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
public class BluetoothClient {
    private StreamConnection streamConnection;
    private OnDiscoverListener onDiscoverListener = null;
    private OnClientListener onClientListener = null;
    public interface OnClientListener {
        void onConnected(InputStream inputStream, OutputStream outputStream);
        void onConnectionFailed();
        void onDisconnected();
        void onClose();
    public interface OnDiscoverListener {
        void onDiscover(RemoteDevice remoteDevice);
    public BluetoothClient() {
    public OnDiscoverListener getOnDiscoverListener() {
        return onDiscoverListener;
    public void setOnDiscoverListener(OnDiscoverListener onDiscoverListener) {
        this.onDiscoverListener = onDiscoverListener;
    public OnClientListener getClientListener() {
        return onClientListener;
    public void setClientListener(OnClientListener onClientListener) {
        this.onClientListener = onClientListener;
    public void find() throws IOException, InterruptedException {
        Set<RemoteDevice> devicesDiscovered = RemoteDeviceDiscovery.getDevices();       //附近所有的蓝牙设备，必须先执行 runDiscovery
        Iterator<RemoteDevice> itr = devicesDiscovered.iterator();
        while (itr.hasNext()) {                                   //连接
            RemoteDevice remoteDevice = itr.next();
            onDiscoverListener.onDiscover(remoteDevice);
    public void startClient(RemoteDevice remoteDevice, String serviceUUID) throws IOException, InterruptedException {
        String url = RemoteDeviceDiscovery.searchService(remoteDevice, serviceUUID);
        streamConnection = (StreamConnection) Connector.open(url);
        if (this.onClientListener != null) {
            this.onClientListener.onConnected(streamConnection.openInputStream(), streamConnection.openOutputStream());
设备查找类代码：
 
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import java.util.Vector;
import javax.bluetooth.DataElement;
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
import javax.bluetooth.UUID;
public class RemoteDeviceDiscovery {
    public final static Set<RemoteDevice> devicesDiscovered = new HashSet<RemoteDevice>();
    public final static Vector<String> serviceFound = new Vector<String>();
    final static Object serviceSearchCompletedEvent = new Object();
    final static Object inquiryCompletedEvent = new Object();
    private static DiscoveryListener listener = new DiscoveryListener() {
        public void inquiryCompleted(int discType) {
            System.out.println("#" + "搜索完成");
            synchronized (inquiryCompletedEvent) {
                inquiryCompletedEvent.notifyAll();
        @Override
        public void deviceDiscovered(RemoteDevice remoteDevice, DeviceClass deviceClass) {
            devicesDiscovered.add(remoteDevice);
            try {
                System.out.println("#发现设备" + remoteDevice.getFriendlyName(false));
            } catch (IOException e) {
                e.printStackTrace();
        @Override
        public void servicesDiscovered(int transID, ServiceRecord[] servRecord) {
            for (int i = 0; i < servRecord.length; i++) {
                String url = servRecord[i].getConnectionURL(ServiceRecord.NOAUTHENTICATE_NOENCRYPT, false);
                if (url == null) {
                    continue;
                serviceFound.add(url);
                DataElement serviceName = servRecord[i].getAttributeValue(0x0100);
                if (serviceName != null) {
                    System.out.println("service " + serviceName.getValue() + " found " + url);
                } else {
                    System.out.println("service found " + url);
            System.out.println("#" + "servicesDiscovered");
        @Override
        public void serviceSearchCompleted(int arg0, int arg1) {
            System.out.println("#" + "serviceSearchCompleted");
            synchronized(serviceSearchCompletedEvent){
                serviceSearchCompletedEvent.notifyAll();
    private static void findDevices() throws IOException, InterruptedException {
        devicesDiscovered.clear();
        synchronized (inquiryCompletedEvent) {
            LocalDevice ld = LocalDevice.getLocalDevice();
            System.out.println("#本机蓝牙名称:" + ld.getFriendlyName());
            boolean started = LocalDevice.getLocalDevice().getDiscoveryAgent().startInquiry(DiscoveryAgent.GIAC,listener);
            if (started) {
                System.out.println("#" + "等待搜索完成...");
                inquiryCompletedEvent.wait();
                    LocalDevice.getLocalDevice().getDiscoveryAgent().cancelInquiry(listener);
                System.out.println("#发现设备数量：" + devicesDiscovered.size());
    public static Set<RemoteDevice> getDevices() throws IOException, InterruptedException {
        findDevices();
        return devicesDiscovered;
    public static String searchService(RemoteDevice btDevice, String serviceUUID) throws IOException, InterruptedException {
        UUID[] searchUuidSet = new UUID[] { new UUID(serviceUUID, false) };
        int[] attrIDs =  new int[] {
                0x0100 // Service name
        synchronized(serviceSearchCompletedEvent) {
            System.out.println("search services on " + btDevice.getBluetoothAddress() + " " + btDevice.getFriendlyName(false));
            LocalDevice.getLocalDevice().getDiscoveryAgent().searchServices(attrIDs, searchUuidSet, btDevice, listener);
            serviceSearchCompletedEvent.wait();
        if (serviceFound.size() > 0) {
            return serviceFound.elementAt(0);
        } else {
            return "";
（2）服务端框架类代码：
 
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.LocalDevice;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.io.StreamConnectionNotifier;
public class BluetoothServer implements Runnable {
    //本机蓝牙设备
    private LocalDevice local = null;
    // 流连接
    private StreamConnection streamConnection = null;
    // 输入流
    private InputStream inputStream;
    private OutputStream outputStream;
    //接入通知
    private StreamConnectionNotifier notifier;
    //线程池
    private final static ExecutorService service = Executors.newCachedThreadPool();
    public String serverName;
    public String serverUUID;
    private OnServerListener mServerListener;
    public interface OnServerListener {
        void onConnected(InputStream inputStream, OutputStream outputStream);
        void onDisconnected();
        void onClose();
    public BluetoothServer(String serverUUID, String serverName) {
        this.serverUUID = serverUUID;
        this.serverName = serverName;
    public void start() {
        try {
            local = LocalDevice.getLocalDevice();
            if (!local.setDiscoverable(DiscoveryAgent.GIAC))
                System.out.println("请将蓝牙设置为可被发现");
            * 作为服务端，被请求
            String url = "btspp://localhost:" +  serverUUID;// + ";name="+serverName;  
            notifier = (StreamConnectionNotifier)Connector.open(url);
            service.submit(this);
        } catch (IOException e) {
            System.out.println(e.getMessage());;
    public OnServerListener getServerListener() {
        return mServerListener;
    public void setServerListener(OnServerListener mServerListener) {
        this.mServerListener = mServerListener;
    @Override
    public void run() {
        try {
            streamConnection = notifier.acceptAndOpen();                //阻塞的，等待设备连接
            inputStream = streamConnection.openInputStream();
            outputStream = streamConnection.openOutputStream();
            if (mServerListener != null) {
                mServerListener.onConnected(inputStream, outputStream);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
本节给出如何使用以上框架类实现蓝牙通信。
 
服务端蓝牙通信框架类使用代码：
 
import java.io.InputStream;
import java.io.OutputStream;
public class BluetoothServerTest {
    public static void main(String[] argv) {
        final String serverName = "Bluetooth Server Test";
        final String serverUUID = "1000110100001000800000805F9B34FB";  //根据需要自定义
        BluetoothServer server = new BluetoothServer(serverUUID, serverName);
        server.setServerListener(new BluetoothServer.OnServerListener() {
            @Override
            public void onConnected(InputStream inputStream, OutputStream outputStream) {
                System.out.printf("Connected");
                //添加通信代码
            @Override
            public void onDisconnected() {
            @Override
            public void onClose() {
        server.start();
客户端通信框架类使用代码：
 
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Vector;
import javax.bluetooth.RemoteDevice;
public class BluetoothClientTest {
    public static void main(String[] argv) {
        final String serverUUID = "1000110100001000800000805F9B34FB"; //需要与服务端相同
        BluetoothClient client = new BluetoothClient();
        Vector<RemoteDevice> remoteDevices = new Vector<>();
        client.setOnDiscoverListener(new BluetoothClient.OnDiscoverListener() {
            @Override
            public void onDiscover(RemoteDevice remoteDevice) {
                remoteDevices.add(remoteDevice);
        client.setClientListener(new BluetoothClient.OnClientListener() {
            @Override
            public void onConnected(InputStream inputStream, OutputStream outputStream) {
                System.out.printf("Connected");
                //添加通信代码
            @Override
            public void onConnectionFailed() {
                System.out.printf("Connection failed");
            @Override
            public void onDisconnected() {
            @Override
            public void onClose() {
        try {
            client.find();
            if (remoteDevices.size() > 0) {
                client.startClient(remoteDevices.firstElement(), serverUUID);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();


 作者：快乐小吧
 链接：https://www.jianshu.com/p/1575a768fcc6
 来源：简书
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