MQTT实现消息接收(接收消息需实现MqttSimpleCallback接口并实现它的publishArrived方法)必须注册接收消息方法
[java]
mqttClient.registerSimpleHandler(simpleCallbackHandler);
// 注册接收消息方法
[/java]
和订阅接主题
[java]</pre>
mqttClient.subscribe(TOPICS, QOS_VALUES);
// 订阅接主题
<pre>[/java]
服务端：
[java]</pre>
package com.gmcc.kuchuan.business;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.ibm.mqtt.MqttClient;
import com.ibm.mqtt.MqttException;
import com.ibm.mqtt.MqttSimpleCallback;
/**
* MQTT消息发送与接收
* @author Join
*
*/
public class MqttBroker {
private final static Log logger = LogFactory.getLog(MqttBroker.class);// 日志对象
// 连接参数
private final static String CONNECTION_STRING = "tcp://localhost:9901";
private final static boolean CLEAN_START = true;
private final static short KEEP_ALIVE = 30;// 低耗网络，但是又需要及时获取数据，心跳30s
private final static String CLIENT_ID = "master";// 客户端标识
private final static int[] QOS_VALUES = { 0, 0, 2, 0 };// 对应主题的消息级别
private final static String[] TOPICS = { "Test/TestTopics/Topic1",
"Test/TestTopics/Topic2", "Test/TestTopics/Topic3",
"client/keepalive" };
private static MqttBroker instance = new MqttBroker();
private MqttClient mqttClient;
/**
* 返回实例对象
*
* @return
*/
public static MqttBroker getInstance() {
return instance;
}
/**
* 重新连接服务
*/
private void connect() throws MqttException {
logger.info("connect to mqtt broker.");
mqttClient = new MqttClient(CONNECTION_STRING);
logger.info("***********register Simple Handler***********");
SimpleCallbackHandler simpleCallbackHandler = new SimpleCallbackHandler();
mqttClient.registerSimpleHandler(simpleCallbackHandler);// 注册接收消息方法
mqttClient.connect(CLIENT_ID, CLEAN_START, KEEP_ALIVE);
logger.info("***********subscribe receiver topics***********");
mqttClient.subscribe(TOPICS, QOS_VALUES);// 订阅接主题
logger.info("***********CLIENT_ID:" + CLIENT_ID);
/**
* 完成订阅后，可以增加心跳，保持网络通畅，也可以发布自己的消息
*/
mqttClient.publish("keepalive", "keepalive".getBytes(), QOS_VALUES[0],
true);// 增加心跳，保持网络通畅
}
/**
* 发送消息
*
* @param clientId
* @param messageId
*/
public void sendMessage(String clientId, String message) {
try {
if (mqttClient == null || !mqttClient.isConnected()) {
connect();
}
logger.info("send message to " + clientId + ", message is "
+ message);
// 发布自己的消息
mqttClient.publish("GMCC/client/" + clientId, message.getBytes(),
0, false);
} catch (MqttException e) {
logger.error(e.getCause());
e.printStackTrace();
}
}
/**
* 简单回调函数，处理server接收到的主题消息
*
* @author Join
*
*/
class SimpleCallbackHandler implements MqttSimpleCallback {
/**
* 当客户机和broker意外断开时触发 可以再此处理重新订阅
*/
@Override
public void connectionLost() throws Exception {
// TODO Auto-generated method stub
System.out.println("客户机和broker已经断开");
}
/**
* 客户端订阅消息后，该方法负责回调接收处理消息
*/
@Override
public void publishArrived(String topicName, byte[] payload, int Qos,
boolean retained) throws Exception {
// TODO Auto-generated method stub
System.out.println("订阅主题: " + topicName);
System.out.println("消息数据: " + new String(payload));
System.out.println("消息级别(0,1,2): " + Qos);
System.out.println("是否是实时发送的消息(false=实时，true=服务器上保留的最后消息): "
+ retained);
}
}
public static void main(String[] args) {
new MqttBroker().sendMessage("client", "message");
}
}
<pre>
[/java]
Android客户端：
核心代码：MQTTConnection内部类
[java]
<pre class="java" name="code">import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;
import android.app.AlarmManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.ContactsContract;
import android.util.Log;
//此部分项目导包已被删除</pre><pre class="java" name="code">import com.ibm.mqtt.IMqttClient;
import com.ibm.mqtt.MqttClient;
import com.ibm.mqtt.MqttException;
import com.ibm.mqtt.MqttPersistence;
import com.ibm.mqtt.MqttPersistenceException;
import com.ibm.mqtt.MqttSimpleCallback;
/*
* PushService that does all of the work.
* Most of the logic is borrowed from KeepAliveService.
* http://code.google.com/p/android-random/source/browse/trunk/TestKeepAlive/src/org/devtcg/demo/keepalive/KeepAliveService.java?r=219
*/
public class PushService extends Service {
private MyBinder mBinder = new MyBinder();
// this is the log tag
public static final String TAG = "PushService";
// the IP address, where your MQTT broker is running.
private static final String MQTT_HOST = "120.197.230.53"; // "209.124.50.174";//
// the port at which the broker is running.
private static int MQTT_BROKER_PORT_NUM = 9901;
// Let's not use the MQTT persistence.
private static MqttPersistence MQTT_PERSISTENCE = null;
// We don't need to remember any state between the connections, so we use a
// clean start.
private static boolean MQTT_CLEAN_START = true;
// Let's set the internal keep alive for MQTT to 15 mins. I haven't tested
// this value much. It could probably be increased.
private static short MQTT_KEEP_ALIVE = 60 * 15;
// Set quality of services to 0 (at most once delivery), since we don't want
// push notifications
// arrive more than once. However, this means that some messages might get
// lost (delivery is not guaranteed)
private static int[] MQTT_QUALITIES_OF_SERVICE = { 0 };
private static int MQTT_QUALITY_OF_SERVICE = 0;
// The broker should not retain any messages.
private static boolean MQTT_RETAINED_PUBLISH = false;
// MQTT client ID, which is given the broker. In this example, I also use
// this for the topic header.
// You can use this to run push notifications for multiple apps with one
// MQTT broker.
public static String MQTT_CLIENT_ID = "client";
// These are the actions for the service (name are descriptive enough)
public static final String ACTION_START = MQTT_CLIENT_ID + ".START";
private static final String ACTION_STOP = MQTT_CLIENT_ID + ".STOP";
private static final String ACTION_KEEPALIVE = MQTT_CLIENT_ID
+ ".KEEP_ALIVE";
private static final String ACTION_RECONNECT = MQTT_CLIENT_ID
+ ".RECONNECT";
// Connection log for the push service. Good for debugging.
private ConnectionLog mLog;
// Connectivity manager to determining, when the phone loses connection
private ConnectivityManager mConnMan;
// Notification manager to displaying arrived push notifications
private NotificationManager mNotifMan;
// Whether or not the service has been started.
private boolean mStarted;
// This the application level keep-alive interval, that is used by the
// AlarmManager
// to keep the connection active, even when the device goes to sleep.
private static final long KEEP_ALIVE_INTERVAL = 1000 * 60 * 28;
// Retry intervals, when the connection is lost.
private static final long INITIAL_RETRY_INTERVAL = 1000 * 10;
private static final long MAXIMUM_RETRY_INTERVAL = 1000 * 60 * 30;
// Preferences instance
private SharedPreferences mPrefs;
// We store in the preferences, whether or not the service has been started
public static final String PREF_STARTED = "isStarted";
// We also store the deviceID (target)
public static final String PREF_DEVICE_ID = "deviceID";
// We store the last retry interval
public static final String PREF_RETRY = "retryInterval";
// Notification title
public static String NOTIF_TITLE = "client";
// Notification id
private static final int NOTIF_CONNECTED = 0;
// This is the instance of an MQTT connection.
private MQTTConnection mConnection;
private long mStartTime;
boolean mShowFlag = true;// 是否显示通知
public static Context ctx;
private boolean mRunFlag = true;// 是否向服务器发送心跳
Timer mTimer = new Timer();
// Static method to start the service
public static void actionStart(Context ctx) {
Intent i = new Intent(ctx, PushService.class);
i.setAction(ACTION_START);
ctx.startService(i);
PushService.ctx = ctx;
}
// Static method to stop the service
public static void actionStop(Context ctx) {
Intent i = new Intent(ctx, PushService.class);
i.setAction(ACTION_STOP);
ctx.startService(i);
}
// Static method to send a keep alive message
public static void actionPing(Context ctx) {
Intent i = new Intent(ctx, PushService.class);
i.setAction(ACTION_KEEPALIVE);
ctx.startService(i);
}
@Override
public void onCreate() {
super.onCreate();
log("Creating service");
mStartTime = System.currentTimeMillis();
try {
mLog = new ConnectionLog();
Log.i(TAG, "Opened log at " + mLog.getPath());
} catch (IOException e) {
Log.e(TAG, "Failed to open log", e);
}
// Get instances of preferences, connectivity manager and notification
// manager
mPrefs = getSharedPreferences(TAG, MODE_PRIVATE);
mConnMan = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
mNotifMan = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
/*
* If our process was reaped by the system for any reason we need to
* restore our state with merely a call to onCreate. We record the last
* "started" value and restore it here if necessary.
*/
handleCrashedService();
}
// This method does any necessary clean-up need in case the server has been
// destroyed by the system
// and then restarted
private void handleCrashedService() {
if (wasStarted() == true) {
log("Handling crashed service...");
// stop the keep alives
stopKeepAlives();
// Do a clean start
start();
}
}
@Override
public void onDestroy() {
log("Service destroyed (started=" + mStarted + ")");
// Stop the services, if it has been started
if (mStarted == true) {
stop();
}
try {
if (mLog != null)
mLog.close();
} catch (IOException e) {
}
}
@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
log("Service started with intent=" + intent);
if (intent == null) {
return;
}
// Do an appropriate action based on the intent.
if (intent.getAction().equals(ACTION_STOP) == true) {
stop();
stopSelf();
} else if (intent.getAction().equals(ACTION_START) == true) {
start();
} else if (intent.getAction().equals(ACTION_KEEPALIVE) == true) {
keepAlive();
} else if (intent.getAction().equals(ACTION_RECONNECT) == true) {
if (isNetworkAvailable()) {
reconnectIfNecessary();
}
}
}
public class MyBinder extends Binder {
public PushService getService() {
return PushService.this;
}
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
// log helper function
private void log(String message) {
log(message, null);
}
private void log(String message, Throwable e) {
if (e != null) {
Log.e(TAG, message, e);
} else {
Log.i(TAG, message);
}
if (mLog != null) {
try {
mLog.println(message);
} catch (IOException ex) {
}
}
}
// Reads whether or not the service has been started from the preferences
private boolean wasStarted() {
return mPrefs.getBoolean(PREF_STARTED, false);
}
// Sets whether or not the services has been started in the preferences.
private void setStarted(boolean started) {
mPrefs.edit().putBoolean(PREF_STARTED, started).commit();
mStarted = started;
}
private synchronized void start() {
log("Starting service...");
// Do nothing, if the service is already running.
if (mStarted == true) {
Log.w(TAG, "Attempt to start connection that is already active");
return;
}
// Establish an MQTT connection
connect();
// 向服务器定时发送心跳，一分钟一次
mRunFlag = true;
mTimer.schedule(new TimerTask() {
@Override
public void run() {
if (!mRunFlag) {
// this.cancel();
// PushService.this.stopSelf();
return;
}
System.out.println("run");
try {
if (isNetworkAvailable()) {
SharedPreferences pref = getSharedPreferences(
"client", 0);
String MOBILE_NUM = pref.getString("MOBILE_NUM", "");
HttpUtil.post(Constants.KEEPALIVE + "&mobile="
+ MOBILE_NUM + "&online_flag=1");
}
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
}, 0, 60 * 1000);
// Register a connectivity listener
registerReceiver(mConnectivityChanged, new IntentFilter(
ConnectivityManager.CONNECTIVITY_ACTION));
}
private synchronized void stop() {
// Do nothing, if the service is not running.
if (mStarted == false) {
Log.w(TAG, "Attempt to stop connection not active.");
return;
}
// Save stopped state in the preferences
setStarted(false);
// Remove the connectivity receiver
unregisterReceiver(mConnectivityChanged);
// Any existing reconnect timers should be removed, since we explicitly
// stopping the service.
cancelReconnect();
// Destroy the MQTT connection if there is one
if (mConnection != null) {
mConnection.disconnect();
mConnection = null;
}
}
//
private synchronized void connect() {
log("Connecting...");
// Thread t = new Thread() {
// @Override
// public void run() {
// fetch the device ID from the preferences.
String deviceID = "GMCC/client/"
+ mPrefs.getString(PREF_DEVICE_ID, null);
// Create a new connection only if the device id is not NULL
try {
mConnection = new MQTTConnection(MQTT_HOST, deviceID);
} catch (MqttException e) {
// Schedule a reconnect, if we failed to connect
log("MqttException: "
+ (e.getMessage() != null ? e.getMessage() : "NULL"));
if (isNetworkAvailable()) {
scheduleReconnect(mStartTime);
}
}
setStarted(true);
// }
// };
// t.start();
// 向服务器定时发送心跳，一分钟一次
mRunFlag = true;
}
private synchronized void keepAlive() {
try {
// Send a keep alive, if there is a connection.
if (mStarted == true && mConnection != null) {
mConnection.sendKeepAlive();
}
} catch (MqttException e) {
log("MqttException: "
+ (e.getMessage() != null ? e.getMessage() : "NULL"), e);
mConnection.disconnect();
mConnection = null;
cancelReconnect();
}
}
// Schedule application level keep-alives using the AlarmManager
private void startKeepAlives() {
Intent i = new Intent();
i.setClass(this, PushService.class);
i.setAction(ACTION_KEEPALIVE);
PendingIntent pi = PendingIntent.getService(this, 0, i, 0);
AlarmManager alarmMgr = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP,
System.currentTimeMillis() + KEEP_ALIVE_INTERVAL,
KEEP_ALIVE_INTERVAL, pi);
}
// Remove all scheduled keep alives
private void stopKeepAlives() {
Intent i = new Intent();
i.setClass(this, PushService.class);
i.setAction(ACTION_KEEPALIVE);
PendingIntent pi = PendingIntent.getService(this, 0, i, 0);
AlarmManager alarmMgr = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmMgr.cancel(pi);
}
// We schedule a reconnect based on the starttime of the service
public void scheduleReconnect(long startTime) {
// the last keep-alive interval
long interval = mPrefs.getLong(PREF_RETRY, INITIAL_RETRY_INTERVAL);
// Calculate the elapsed time since the start
long now = System.currentTimeMillis();
long elapsed = now - startTime;
// Set an appropriate interval based on the elapsed time since start
if (elapsed < interval) {
interval = Math.min(interval * 4, MAXIMUM_RETRY_INTERVAL);
} else {
interval = INITIAL_RETRY_INTERVAL;
}
log("Rescheduling connection in " + interval + "ms.");
// Save the new internval
mPrefs.edit().putLong(PREF_RETRY, interval).commit();
// Schedule a reconnect using the alarm manager.
Intent i = new Intent();
i.setClass(this, PushService.class);
i.setAction(ACTION_RECONNECT);
PendingIntent pi = PendingIntent.getService(this, 0, i, 0);
AlarmManager alarmMgr = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmMgr.set(AlarmManager.RTC_WAKEUP, now + interval, pi);
}
// Remove the scheduled reconnect
public void cancelReconnect() {
Intent i = new Intent();
i.setClass(PushService.this, PushService.class);
i.setAction(ACTION_RECONNECT);
PendingIntent pi = PendingIntent.getService(PushService.this, 0, i, 0);
AlarmManager alarmMgr = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmMgr.cancel(pi);
}
private synchronized void reconnectIfNecessary() {
log("mStarted" + mStarted);
log("mConnection" + mConnection);
if (mStarted == true && mConnection == null) {
log("Reconnecting...");
connect();
}
}
// This receiver listeners for network changes and updates the MQTT
// connection
// accordingly
private BroadcastReceiver mConnectivityChanged = new BroadcastReceiver() {
@Override
public void onReceive(Context context, final Intent intent) {
// Get network info
// Thread mReconnect = new Thread(){
// public void run() {
NetworkInfo info = (NetworkInfo) intent
.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
// Is there connectivity?
boolean hasConnectivity = (info != null && info.isConnected()) ? true
: false;
log("Connectivity changed: connected=" + hasConnectivity);
if (hasConnectivity) {
reconnectIfNecessary();
} else if (mConnection != null) {
// Thread cancelConn = new Thread(){
// public void run() {
// // if there no connectivity, make sure MQTT connection is
// destroyed
log("cancelReconnect");
mConnection.disconnect();
mConnection = null;
log("cancelReconnect" + mConnection);
cancelReconnect();
// }
// };
// cancelConn.start();
}
// };
//
// };
// mReconnect.start();
}
};
// Display the topbar notification
private void showNotification(String text, Request request) {
Notification n = new Notification();
n.flags |= Notification.FLAG_SHOW_LIGHTS;
n.flags |= Notification.FLAG_AUTO_CANCEL;
n.defaults = Notification.DEFAULT_ALL;
n.icon = R.drawable.ico;
n.when = System.currentTimeMillis();
Intent intent = new Intent();
Bundle bundle = new Bundle();
bundle.putSerializable("request", request);
bundle.putString("currentTab", "1");
intent.putExtras(bundle);
intent.setClass(this, MainActivity.class);
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
// Simply open the parent activity
PendingIntent pi = PendingIntent.getActivity(this, 0, intent, 0);
// Change the name of the notification here
n.setLatestEventInfo(this, NOTIF_TITLE, text, pi);
mNotifMan.notify(NOTIF_CONNECTED, n);
}
// Check if we are online
private boolean isNetworkAvailable() {
NetworkInfo info = mConnMan.getActiveNetworkInfo();
if (info == null) {
return false;
}
return info.isConnected();
}
<span style="BACKGROUND-COLOR: #ccffff"> // This inner class is a wrapper on top of MQTT client.
private class MQTTConnection implements MqttSimpleCallback {
IMqttClient mqttClient = null;
// Creates a new connection given the broker address and initial topic
public MQTTConnection(String brokerHostName, String initTopic)
throws MqttException {
// Create connection spec
String mqttConnSpec = "tcp://" + brokerHostName + "@"
+ MQTT_BROKER_PORT_NUM;
// Create the client and connect
mqttClient = MqttClient.createMqttClient(mqttConnSpec,
MQTT_PERSISTENCE);
String clientID = MQTT_CLIENT_ID + "/"
+ mPrefs.getString(PREF_DEVICE_ID, "");
Log.d(TAG, "mqttConnSpec:" + mqttConnSpec + " clientID:"
+ clientID);
mqttClient.connect(clientID, MQTT_CLEAN_START, MQTT_KEEP_ALIVE);
// register this client app has being able to receive messages
mqttClient.registerSimpleHandler(this);
// Subscribe to an initial topic, which is combination of client ID
// and device ID.
// initTopic = MQTT_CLIENT_ID + "/" + initTopic;
subscribeToTopic(initTopic);
log("Connection established to " + brokerHostName + " on topic "
+ initTopic);
// Save start time
mStartTime = System.currentTimeMillis();
// Star the keep-alives
startKeepAlives();
}
// Disconnect
public void disconnect() {
// try {
stopKeepAlives();
log("stopKeepAlives");
Thread t = new Thread() {
public void run() {
try {
mqttClient.disconnect();
log("mqttClient.disconnect();");
} catch (MqttPersistenceException e) {
log("MqttException"
+ (e.getMessage() != null ? e.getMessage()
: " NULL"), e);
}
};
};
t.start();
// } catch (MqttPersistenceException e) {
// log("MqttException"
// + (e.getMessage() != null ? e.getMessage() : " NULL"),
// e);
// }
}
/*
* Send a request to the message broker to be sent messages published
* with the specified topic name. Wildcards are allowed.
*/
private void subscribeToTopic(String topicName) throws MqttException {
if ((mqttClient == null) || (mqttClient.isConnected() == false)) {
// quick sanity check - don't try and subscribe if we don't have
// a connection
log("Connection error" + "No connection");
} else {
String[] topics = { topicName };
mqttClient.subscribe(topics, MQTT_QUALITIES_OF_SERVICE);
}
}
/*
* Sends a message to the message broker, requesting that it be
* published to the specified topic.
*/
private void publishToTopic(String topicName, String message)
throws MqttException {
if ((mqttClient == null) || (mqttClient.isConnected() == false)) {
// quick sanity check - don't try and publish if we don't have
// a connection
log("No connection to public to");
} else {
mqttClient.publish(topicName, message.getBytes(),
MQTT_QUALITY_OF_SERVICE, MQTT_RETAINED_PUBLISH);
}
}
/*
* Called if the application loses it's connection to the message
* broker.
*/
public void connectionLost() throws Exception {
log("Loss of connection" + "connection downed");
stopKeepAlives();
// 取消定时发送心跳
mRunFlag = false;
// 向服务器发送请求，更改在线状态
// SharedPreferences pref = getSharedPreferences("client",0);
// String MOBILE_NUM=pref.getString("MOBILE_NUM", "");
// HttpUtil.post(Constants.KEEPALIVE + "&mobile="
// + MOBILE_NUM+"&online_flag=0");
// null itself
mConnection = null;
if (isNetworkAvailable() == true) {
reconnectIfNecessary();
}
}
/*
* Called when we receive a message from the message broker.
*/
public void publishArrived(String topicName, byte[] payload, int qos,
boolean retained) throws MqttException {
// Show a notification
// synchronized (lock) {
String s = new String(payload);
Request request = null;
try {// 解析服务端推送过来的消息
request = XmlPaserTool.getMessage(new ByteArrayInputStream(s
.getBytes()));
// request=Constants.request;
} catch (Exception e) {
e.printStackTrace();
}
final Request mRequest = request;
DownloadInfo down = new DownloadInfo(mRequest);
down.setDownLoad(down);
downloadInfos.add(down);
sendUpdateBroast();
down.start();
showNotification("您有一条新的消息!", mRequest);
Log.d(PushService.TAG, s);
Log.d(PushService.TAG, mRequest.getMessageId());
// 再向服务端推送消息
new AdvancedCallbackHandler().sendMessage(MQTT_CLIENT_ID
+ "/keepalive", "***********send message**********");
}
public void sendKeepAlive() throws MqttException {
log("Sending keep alive");
// publish to a keep-alive topic
publishToTopic(MQTT_CLIENT_ID + "/keepalive",
mPrefs.getString(PREF_DEVICE_ID, ""));
}
}
class AdvancedCallbackHandler {
IMqttClient mqttClient = null;
public final int[] QOS_VALUES = { 0, 0, 2, 0 };// 对应主题的消息级别
/**
* 重新连接服务
*/
private void connect() throws MqttException {
String mqttConnSpec = "tcp://" + MQTT_HOST + "@"
+ MQTT_BROKER_PORT_NUM;
// Create the client and connect
mqttClient = MqttClient.createMqttClient(mqttConnSpec,
MQTT_PERSISTENCE);
String clientID = MQTT_CLIENT_ID + "/"
+ mPrefs.getString(PREF_DEVICE_ID, "");
mqttClient.connect(clientID, MQTT_CLEAN_START, MQTT_KEEP_ALIVE);
Log.d(TAG, "连接服务器，推送消息");
Log.d(TAG, "**mqttConnSpec:" + mqttConnSpec + " clientID:"
+ clientID);
Log.d(TAG, MQTT_CLIENT_ID + "/keepalive");
// 增加心跳，保持网络通畅
mqttClient.publish(MQTT_CLIENT_ID + "/keepalive",
"keepalive".getBytes(), QOS_VALUES[0], true);
}
/**
* 发送消息
*
* @param clientId
* @param messageId
*/
public void sendMessage(String clientId, String message) {
try {
if (mqttClient == null || !mqttClient.isConnected()) {
connect();
}
Log.d(TAG, "send message to " + clientId + ", message is "
+ message);
// 发布自己的消息
// mqttClient.publish(MQTT_CLIENT_ID + "/keepalive",
// message.getBytes(), 0, false);
mqttClient.publish(MQTT_CLIENT_ID + "/keepalive",
message.getBytes(), 0, false);
} catch (MqttException e) {
Log.d(TAG, e.getCause() + "");
e.printStackTrace();
}
}
}
</span>
public String getPeople(String phone_number) {
String name = "";
String[] projection = { ContactsContract.PhoneLookup.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER };
Log.d(TAG, "getPeople ---------");
// 将自己添加到 msPeers 中
Cursor cursor = this.getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
projection, // Which columns to return.
ContactsContract.CommonDataKinds.Phone.NUMBER + " = '"
+ phone_number + "'", // WHERE clause.
null, // WHERE clause value substitution
null); // Sort order.
if (cursor == null) {
Log.d(TAG, "getPeople null");
return "";
}
Log.d(TAG, "getPeople cursor.getCount() = " + cursor.getCount());
if (cursor.getCount() > 0) {
cursor.moveToPosition(0);
// 取得联系人名字
int nameFieldColumnIndex = cursor
.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME);
name = cursor.getString(nameFieldColumnIndex);
Log.i("Contacts", "" + name + " .... " + nameFieldColumnIndex); // 这里提示
// force
// close
System.out.println("联系人姓名：" + name);
return name;
}
return phone_number;
}
public void sendUpdateBroast() {
Intent intent = new Intent();
intent.setAction("update");
sendBroadcast(intent);
}
public void sendUpdateFinishBroast() {
Intent intent = new Intent();
intent.setAction("updateFinishList");
sendBroadcast(intent);
}
public class DownloadInfo extends Thread {
boolean runflag = true;
Request mRequest;
public float progress;
public MessageBean bean = null;
DownloadInfo download = null;
MessageDetailDao dao = new MessageDetailDao(
PushService.this.getApplicationContext());
public synchronized void stopthread() {
runflag = false;
}
public synchronized boolean getrunflag() {
return runflag;
}
DownloadInfo(Request mRequest) {
this.mRequest = mRequest;
}
public void setDownLoad(DownloadInfo download) {
this.download = download;
}
@Override
public void run() {
try {
File dir = new File(Constants.DOWNLOAD_PATH);
if (!dir.exists()) {
dir.mkdirs();
}
String filePath = Constants.DOWNLOAD_PATH
+ mRequest.getMessageId() + "." + mRequest.getExt();
bean = new MessageBean();
bean.setPath(filePath);
bean.setStatus(0);
bean.setDate(mRequest.getTimestamp());
bean.setLayoutID(R.layout.list_say_he_item);
bean.setPhotoID(R.drawable.receive_ico);
bean.setMessage_key(mRequest.getMessageId());
bean.setPhone_number(mRequest.getReceiver());
bean.setAction(1);
String name = getPeople(mRequest.getSender());
bean.setName(name);
bean.setFileType(Integer.parseInt(mRequest.getCommand()));
if (mRequest.getCommand().equals(Request.TYPE_MUSIC)) {
bean.setMsgIco(R.drawable.music_temp);
bean.setText(name + "给你发送了音乐");
mRequest.setBody(Base64.encodeToString(bean.getText()
.getBytes(), Base64.DEFAULT));
} else if (mRequest.getCommand().equals(Request.TYPE_CARD)) {
bean.setMsgIco(R.drawable.card_temp);
bean.setText(new String(Base64.decode(mRequest.getBody(),
Base64.DEFAULT)));
mRequest.setBody(Base64.encodeToString(bean.getText()
.getBytes(), Base64.DEFAULT));
} else if (mRequest.getCommand().equals(Request.TYPE_LBS)) {
bean.setMsgIco(R.drawable.address_temp);
bean.setText(new String(Base64.decode(mRequest.getBody(),
Base64.DEFAULT)));
mRequest.setBody(Base64.encodeToString(bean.getText()
.getBytes(), Base64.DEFAULT));
} else if (mRequest.getCommand().equals(Request.TYPE_PHOTO)) {
bean.setText(name + "向你发送了照片");
bean.setMsgIco(-1);
} else if (mRequest.getCommand().equals(Request.TYPE_PIC)) {
bean.setText(name + "向你发送了图片");
bean.setMsgIco(-1);
} else if (mRequest.getCommand().equals(Request.TYPE_SMS)) {
bean.setFileType(0);
}
if (!mRequest.getCommand().equals(Request.TYPE_CARD)
&& !mRequest.getCommand().equals(Request.TYPE_SMS)) {
String path = Constants.FILE_DOWNLOAD_URL
+ mRequest.getMessageId();
URL url = new URL(path);
HttpURLConnection hurlconn = (HttpURLConnection) url
.openConnection();// 基于HTTP协议的连接对象
hurlconn.setConnectTimeout(5000);// 请求超时时间 5s
hurlconn.setRequestMethod("GET");// 请求方式
hurlconn.connect();
long fileSize = hurlconn.getContentLength();
InputStream instream = hurlconn.getInputStream();
byte[] buffer = new byte[1024];
int len = 0;
int number = 0;
RandomAccessFile rasf = new RandomAccessFile(filePath,
"rwd");
while ((len = instream.read(buffer)) != -1) {// 开始下载文件
if (getrunflag() && progress < 100) {
rasf.seek(number);
number += len;
rasf.write(buffer, 0, len);
progress = (((float) number) / fileSize) * 100;
// 发送广播，修改进度条进度
sendUpdateBroast();
} else {
this.interrupt();
if (number != fileSize) {// 取消下载，将已经缓存的未下载完成的文件删除
File file = new File(filePath);
if (file.exists())
file.delete();
}
PushService.downloadInfos.remove(download);
sendUpdateBroast();
return;
}
}
instream.close();
PushService.downloadInfos.remove(download);
sendUpdateBroast();
} else {// 收到消息，将信息保存到数据库
PushService.downloadInfos.remove(download);
sendUpdateBroast();
}
// 将文件信息保存到数据库
dao.create(bean);
sendUpdateFinishBroast();
} catch (Exception e) {
PushService.downloadInfos.remove(download);
sendUpdateBroast();
e.printStackTrace();
}
}
}
public static ArrayList<DownloadInfo> downloadInfos = new ArrayList<DownloadInfo>();
public ArrayList<DownloadInfo> getDownloadInfos() {
return PushService.downloadInfos;
}
public void setDownloadInfos(ArrayList<DownloadInfo> downloadInfos) {
PushService.downloadInfos = downloadInfos;
}
}</pre>
<p><br>
ps：</p>
<p>接收者必须订阅发送者的TOPICS才能收到消息</p>
<p> </p>
<pre></pre>
<pre></pre>
<pre></pre>
<pre></pre>
[/java]
欢迎来到这里！
我们正在构建一个小众社区，大家在这里相互信任，以平等 • 自由 • 奔放的价值观进行分享交流。最终，希望大家能够找到与自己志同道合的伙伴，共同成长。
注册 关于