这是Android WebSocket客户端监听的使用

1、安卓没有适配Stom协议的WebSocket监听，所以只能自己进行Okhttp封装
2、以下是借助Okhttp和Stomp进行WebSocket长链接监听

1. 依赖引入

//  implementation 'org.java-websocket:Java-WebSocket:1.3.6'
    implementation 'com.squareup.okhttp3:okhttp:3.12.1'
    implementation 'com.android.support:recyclerview-v7:28.0.0'
    // RxJava
    implementation 'io.reactivex.rxjava2:rxjava:2.2.5'
    implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
    implementation 'com.squareup.retrofit2:adapter-rxjava2:2.5.0'
    implementation 'com.squareup.retrofit2:retrofit:2.5.0'

2. 代码实现

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    private SimpleAdapter mAdapter;
    private List<String> mDataSet = new ArrayList<>();
    private StompClient mStompClient;
    private Disposable mRestPingDisposable;
    private final SimpleDateFormat mTimeFormat = new SimpleDateFormat("HH:mm:ss", Locale.getDefault());
    private RecyclerView mRecyclerView;
    private Gson mGson = new GsonBuilder().create();

    private CompositeDisposable compositeDisposable;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

		// 连接websocket服务端
        mStompClient = Stomp.over(Stomp.ConnectionProvider.OKHTTP, "ws://" + 主机地址
                + ":" + 端口号 + "/example-endpoint/websocket");

    }

    public void disconnectStomp(View view) {
        mStompClient.disconnect();
    }

    public static final String LOGIN = "login";

    public static final String PASSCODE = "passcode";

    public void connectStomp(View view) {

        List<StompHeader> headers = new ArrayList<>();
        headers.add(new StompHeader(LOGIN, "guest"));
        headers.add(new StompHeader(PASSCODE, "guest"));

        mStompClient.withClientHeartbeat(1000).withServerHeartbeat(1000);

        Disposable dispLifecycle = mStompClient.lifecycle()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(lifecycleEvent -> {
                    switch (lifecycleEvent.getType()) {
                        case OPENED:
                            toast("Stomp connection opened");
                            break;
                        case ERROR:
                            Log.e(TAG, "Stomp connection error", lifecycleEvent.getException());
                            toast("Stomp connection error");
                            break;
                        case CLOSED:
                            toast("Stomp connection closed");
                            resetSubscriptions();
                            break;
                        case FAILED_SERVER_HEARTBEAT:
                            toast("Stomp failed server heartbeat");
                            break;
                    }
                });

        compositeDisposable.add(dispLifecycle);

        // 订阅服务提供的topic
        Disposable dispTopic = mStompClient.topic("/topic/greetings")
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(topicMessage -> {
                    Log.d(TAG, "Received " + topicMessage.getPayload());
                    addItem(mGson.fromJson(topicMessage.getPayload(), EchoModel.class));
                }, throwable -> {
                    Log.e(TAG, "Error on subscribe topic", throwable);
                });

        compositeDisposable.add(dispTopic);

        mStompClient.connect(headers);
    }

    @Override
    protected void onDestroy() {
        mStompClient.disconnect();

        if (mRestPingDisposable != null) mRestPingDisposable.dispose();
        if (compositeDisposable != null) compositeDisposable.dispose();
        super.onDestroy();
    }
}

附件。¹

最后

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