我有Mqtt Android客户端，代码来源
import android.annotation.SuppressLint;
import android.content.Context;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.Log;
import com.google.gson.Gson;
import org.eclipse.paho.android.service.MqttAndroidClient;
import org.eclipse.paho.client.mqttv3.IMqttActionListener;
import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.IMqttToken;
import org.eclipse.paho.client.mqttv3.MqttCallbackExtended;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import java.util.Arrays;
import horseman.four.com.unite.app.UniteApp;
import horseman.four.com.unite.screens.map.ChatManager;
import horseman.four.com.unite.screens.map.model.ChatMessage;
import horseman.four.com.unite.screens.map.model.ChatModel;
/**
* Created by Mahendra Chhimwal on 18/1/17.
*/
public class MqttManager implements MqttCallbackExtended {
public static final String TAG = "MqttManager";
private MqttAndroidClient mMqttAndroidClient;
private MqttAndroidClient mMqttAndroidReceiver;
private final String mServerUri = "tcp://unitevm.eastus.cloudapp.azure.com:1883";
private String mClientId = null;
private final String mSubscriptionTopic = "exampleAndroidTopic";
private final String mPublishTopic = "exampleAndroidPublishTopic";
private final String mPublishMessage = "Hello World!";
private ChatManager mChatManager;
private Context mContext;
private String mTopic;
private static Gson GSON = new Gson();
private MqttManager() {
mContext = UniteApp.getContext();
}
public static MqttManager getINST() {
return new MqttManager();
}
public void setChatManager(@NonNull ChatManager chatManager) {
mChatManager = chatManager;
}
@SuppressLint("HardwareIds")
public void initConnection(String topic) {
mTopic = topic;
mClientId = Settings.Secure.getString(mContext.getContentResolver(),
Settings.Secure.ANDROID_ID);
mMqttAndroidClient = new MqttAndroidClient(mContext, mServerUri, mClientId);
mMqttAndroidReceiver = new MqttAndroidClient(mContext, mServerUri, "csajcbjsc");
mMqttAndroidClient.setCallback(this);
mMqttAndroidReceiver.setCallback(this);
connectToServer();
}
@Override
public void connectComplete(boolean reconnect, String serverURI) {
if (reconnect) {
Log.d(TAG, "reconnect is true . So subscribing to topic again");
// Because Clean Session is true, we need to re-subscribe
subscribeToTopic();
} else {
Log.d(TAG, "Connected to MQTT server");
}
}
private void connectToServer() {
MqttConnectOptions mqttConnectOptions = new MqttConnectOptions();
mqttConnectOptions.setAutomaticReconnect(true);
mqttConnectOptions.setCleanSession(false);
mqttConnectOptions.setKeepAliveInterval(300);
mqttConnectOptions.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1);
try {
mMqttAndroidClient.connect(mqttConnectOptions, null, new IMqttActionListener() {
@Override
public void onSuccess(IMqttToken asyncActionToken) {
Log.d(TAG, "mqtt connect successfull. Now Subscribing to topic...");
subscribeToTopic();
}
@Override
public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
if (exception != null) {
Log.e(TAG, "connect failure with exception : " + exception.getMessage());
exception.printStackTrace();
}
}
});
} catch (MqttException ex) {
ex.printStackTrace();
}
MqttConnectOptions mqttConnectOption = new MqttConnectOptions();
mqttConnectOption.setAutomaticReconnect(true);
mqttConnectOption.setCleanSession(false);
mqttConnectOption.setKeepAliveInterval(300);
mqttConnectOption.setMqttVersion(MqttConnectOptions.MQTT_VERSION_3_1);
try {
mMqttAndroidReceiver.connect(mqttConnectOptions, null, new IMqttActionListener() {
@Override
public void onSuccess(IMqttToken asyncActionToken) {
Log.d(TAG, "mqtt connect successfull. Now Subscribing to topic...");
subscribeToTopic();
}
@Override
public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
if (exception != null) {
Log.e(TAG, "connect failure with exception : " + exception.getMessage());
exception.printStackTrace();
}
}
});
} catch (MqttException ex) {
ex.printStackTrace();
}
}
@Override
public void connectionLost(Throwable cause) {
if (cause != null) {
Log.e(TAG, "Connection to MQtt is lost due to " + cause.getMessage());
}
// connectToServer();
}
@Override
public void messageArrived(String topic, MqttMessage message) throws Exception {
Log.d(TAG, "Message arrived : " + message + " from topic : " + topic);
if (mTopic.equals(topic)) {
String text = message.toString();
if (!TextUtils.isEmpty(text)) {
handlerChatMessage(text);
}
}
}
private void handlerChatMessage(String message) {
try {
ChatModel chatModel = GSON.fromJson(message, ChatModel.class);
if (chatModel.isChat()) {
String chatMessage = chatModel.getMessage();
if (!TextUtils.isEmpty(chatMessage)) {
ChatMessage cMessageObj = GSON.fromJson(chatMessage, ChatMessage.class);
cMessageObj.setSenderId(chatModel.getSender());
if (mChatManager != null) {
mChatManager.chatMessageArrived(cMessageObj);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void deliveryComplete(IMqttDeliveryToken token) {
try {
if (token != null && token.getMessage() != null) {
Log.d(TAG, "Message : " + token.getMessage().toString() + " delivered");
}
} catch (MqttException ex) {
ex.printStackTrace();
}
}
private void subscribeToTopic() {
try {
mMqttAndroidClient.subscribe(mTopic, 0, null, new IMqttActionListener() {
@Override
public void onSuccess(IMqttToken asyncActionToken) {
Log.d(TAG, "Subscribed to topic : " + mTopic);
}
@Override
public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
Log.d(TAG, "topic subscription failed for topic : " + mTopic);
}
});
} catch (MqttException ex) {
System.err.println("Exception whilst subscribing");
ex.printStackTrace();
}
}
public void publishMessage(String messageText) {
try {
MqttMessage message = new MqttMessage();
message.setPayload(messageText.getBytes());
message.setQos(2);
mMqttAndroidClient.publish(mPublishTopic, message);
if (!mMqttAndroidClient.isConnected()) {
}
} catch (MqttException e) {
System.err.println("Error Publishing: " + e.getMessage());
e.printStackTrace();
}
}
}
Adb记录来自客户端的发布事件
01-21 02:03:47.581 17426-18022/horseman.four.com.unite D/AlarmPingSender: Register alarmreceiver to MqttServiceMqttService.pingSender.aae59bad799dafed
01-21 02:03:47.581 17426-18021/horseman.four.com.unite D/AlarmPingSender: Register alarmreceiver to MqttServiceMqttService.pingSender.csajcbjsc
01-21 02:03:47.620 17426-17426/horseman.four.com.unite D/MqttManager: mqtt connect successfull. Now Subscribing to topic...
01-21 02:03:47.632 17426-17426/horseman.four.com.unite D/MqttManager: mqtt connect successfull. Now Subscribing to topic...
01-21 02:03:47.895 17426-17426/horseman.four.com.unite D/MqttManager: Subscribed to topic : example_topic
01-21 02:03:48.250 17426-17426/horseman.four.com.unite D/MqttManager: Subscribed to topic : example_topic
01-21 02:03:54.859 17426-17426/horseman.four.com.unite D/MqttManager: Message : jcjcf delivered
01-21 02:03:56.087 17426-17426/horseman.four.com.unite D/MqttManager: Message : vjchxhf delivered
01-21 02:03:57.407 17426-17426/horseman.four.com.unite D/MqttManager: Message : jcjcufi delivered
01-21 02:03:58.342 17426-17426/horseman.four.com.unite D/MqttManager: Message : jchxuf delivered
01-21 02:03:59.267 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjcjf delivered
01-21 02:04:00.089 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjcig delivered
01-21 02:04:01.004 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjcif delivered
01-21 02:04:01.819 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjgiy delivered
01-21 02:04:02.839 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjgiy delivered
01-21 02:04:03.457 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjfjg delivered
01-21 02:04:04.378 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjfiu delivered
01-21 02:04:21.478 17426-17426/horseman.four.com.unite D/MqttManager: Message : vghbng v gjc delivered
01-21 02:04:22.912 17426-17426/horseman.four.com.unite D/MqttManager: Message : bvcucjh delivered
01-21 02:04:24.140 17426-17426/horseman.four.com.unite D/MqttManager: Message : gjcjv delivered
任何人都可以帮助我找出我在这里缺少的东西吗？接收器没有收到任何消息，因为从日志中可以清楚地看到它。
答案 0 :(得分：1)
您已订阅example_topic（或通过initConnection()至mTopic设置的任何内容），但您要发布到exampleAndroidPublishTopic，这是const {{1}的固定值}}