{"id":15264,"date":"2023-12-01T11:06:48","date_gmt":"2023-12-01T03:06:48","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=15264"},"modified":"2023-12-01T11:06:48","modified_gmt":"2023-12-01T03:06:48","slug":"mqtt-%e5%ae%89%e5%8d%93app%e5%bc%80%e5%8f%91%e6%9c%89%e5%93%aa%e4%ba%9b%e6%96%b9%e6%b3%95%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/15264\/","title":{"rendered":"mqtt \u5b89\u5353app\u5f00\u53d1\u6709\u54ea\u4e9b\u65b9\u6cd5\uff1f"},"content":{"rendered":"<p>MQTT \u5b89\u5353App\u5f00\u53d1: \u4e00\u4e2a\u8be6\u7ec6\u7684\u6559\u7a0b<\/p>\n<p>\u5f53\u6211\u4eec\u8c08\u8bba\u7269\u8054\u7f51\uff08Internet of Things\uff0c\u7b80\u79f0IoT\uff09\u65f6\uff0c\u6d88\u606f\u4f20\u8f93\u662f\u4e00\u4e2a\u81f3\u5173\u91cd\u8981\u7684\u7ec4\u6210\u90e8\u5206\u3002\u4e3a\u4e86\u5b9e\u73b0\u8bbe\u5907\u95f4\u7684\u6709\u6548\u901a\u4fe1\uff0c\u6709\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7f51\u7edc\u534f\u8bae\u88ab\u5927\u91cf\u91c7\u7528\u2014\u2014MQTT(MQ Telemetry Transport)\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd\u5728Android\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9e\u73b0MQTT\u7684\u539f\u7406\u3001\u5173\u952e\u90e8\u5206\u4ee5\u53ca\u8be6\u7ec6\u6559\u7a0b\u3002<\/p>\n<p>\u4e00\u3001\u4ec0\u4e48\u662fMQTT\uff1f<\/p>\n<p>MQTT(Message Queuing Telemetry Transport)\u662f\u4e00\u79cd\u57fa\u4e8e\u53d1\u5e03\/\u8ba2\u9605(Pub\/Sub)\u6a21\u5f0f\u7684\u8f7b\u91cf\u7ea7\u6d88\u606f\u4f20\u8f93\u534f\u8bae\uff0c\u4e13\u95e8\u4e3a\u4f4e\u5e26\u5bbd\u3001\u9ad8\u5ef6\u8fdf\u6216\u4e0d\u7a33\u5b9a\u7684\u7f51\u7edc\u73af\u5883\u8bbe\u8ba1\u3002\u5b83\u91c7\u7528\u57fa\u4e8eTCP\/IP\u7684\u534f\u8bae\uff0c\u9002\u7528\u4e8e\u4f4e\u529f\u8017\u548c\u8fdc\u7a0b\u8fde\u63a5\u7684\u573a\u666f\uff0c\u5982\u7269\u8054\u7f51\u3001\u667a\u80fd\u5bb6\u5c45\u7b49\u3002<\/p>\n<p>\u4e8c\u3001MQTT\u7684\u5173\u952e\u7ec4\u6210\u90e8\u5206<\/p>\n<p>1. MQTT Broker: \u670d\u52a1\u5668\u7aef\uff0c\u8d1f\u8d23\u63a5\u6536\u53d1\u5e03\u8005\u7684\u6d88\u606f\uff0c\u5e76\u5c06\u5176\u8f6c\u53d1\u7ed9\u76f8\u5e94\u7684\u8ba2\u9605\u8005\u3002<\/p>\n<p>2. Publisher: \u6570\u636e\u53d1\u5e03\u8005\uff0c\u5411Broker\u53d1\u9001\u6570\u636e\u3002<\/p>\n<p>3. Subscriber: \u6570\u636e\u8ba2\u9605\u8005\uff0c\u8ba2\u9605\u611f\u5174\u8da3\u7684\u4e3b\u9898\u5e76\u63a5\u6536\u6765\u81eaPublisher\u7684\u6570\u636e\u3002<\/p>\n<p>4. Topic: \u4e3b\u9898\u662f\u4e00\u79cd\u6d88\u606f\u8fc7\u6ee4\u673a\u5236\uff0c\u7528\u6237\u53ef\u4ee5\u8ba2\u9605\u5e76\u53d1\u5e03\u611f\u5174\u8da3\u7684\u4e3b\u9898\u6570\u636e\u3002<\/p>\n<p>\u4e09\u3001\u5728Android\u4e2d\u4f7f\u7528MQTT<\/p>\n<p>\u8981\u5728Android\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5b9e\u73b0MQTT\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\u3002\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u540d\u4e3a&#8221;eclipse\/paho.mqtt.android&#8221;\u7684\u5f00\u6e90\u5e93\u6765\u5b9e\u73b0MQTT\u3002\u6709\u5173\u76f8\u5173\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u6b64\u94fe\u63a5\uff1ahttps:\/\/github.com\/eclipse\/paho.mqtt.android<\/p>\n<p>1. \u8981\u5728Android Studio\u9879\u76ee\u4e2d\u6dfb\u52a0Paho MQTT\u4f9d\u8d56\uff0c\u8bf7\u5c06\u4ee5\u4e0b\u4ee3\u7801\u6dfb\u52a0\u5230app\u6a21\u5757\u7684build.gradle\u6587\u4ef6\u4e2d\uff0c\u5e76\u70b9\u51fb\u540c\u6b65\uff1a<\/p>\n<p>&#8220;`gradle<\/p>\n<p>dependencies {<\/p>\n<p>    implementation &#8216;org.eclipse.paho:org.eclipse.paho.android.service:1.1.1&#8217;<\/p>\n<p>    implementation &#8216;org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.5&#8217;<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>2. \u521b\u5efa\u4e00\u4e2a\u7c7b\u540d\u4e3aMqttHelper\u7684java\u7c7b\u3002\u8fd9\u4e2a\u7c7b\u5c06\u5305\u542b\u4e0eMQTT\u76f8\u5173\u7684\u6240\u6709\u529f\u80fd\u3002\u9996\u5148\uff0c\u5728MqttHelper\u7c7b\u4e2d\u5b9a\u4e49\u4ee5\u4e0b\u5c5e\u6027\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>private static final String TAG = &#8220;MqttHelper&#8221;;<\/p>\n<p>private MqttAndroidClient mqttAndroidClient;<\/p>\n<p>private final String server_uri;<\/p>\n<p>private final String clientId;<\/p>\n<p>private final String userName;<\/p>\n<p>private final String password;<\/p>\n<p>&#8220;`<\/p>\n<p>\u8fd9\u91cc\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2aMqttAndroidClient\u5bf9\u8c61\uff0c\u7528\u4e8e\u8fde\u63a5\u5230MQTT\u670d\u52a1\u5668\u3002server_uri\u3001clientId\u3001userName\u548cpassword\u5c06\u7528\u4e8e\u8fde\u63a5\u5230\u670d\u52a1\u5668\u3002<\/p>\n<p>3. \u521d\u59cb\u5316MqttHelper\u7c7b\uff0c\u521b\u5efa\u4e00\u4e2a\u6784\u9020\u51fd\u6570\u5e76\u4f20\u9012\u5fc5\u8981\u7684\u53c2\u6570\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>public MqttHelper(Context context, String server_uri, String clientId, String userName, String password) {<\/p>\n<p>    this.server_uri = server_uri;<\/p>\n<p>    this.clientId = clientId;<\/p>\n<p>    this.userName = userName;<\/p>\n<p>    this.password = password;<\/p>\n<p>    \/\/ \u521d\u59cb\u5316 MqttAndroidClient<\/p>\n<p>    mqttAndroidClient = new MqttAndroidClient(context, server_uri, clientId);<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>4. \u8fde\u63a5\u5230MQTT\u670d\u52a1\u5668\uff1a<\/p>\n<p>\u6211\u4eec\u9700\u8981\u5728MqttHelper\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3aconnect()\u7684\u65b9\u6cd5\uff0c\u4ee5\u8fde\u63a5\u5230MQTT\u670d\u52a1\u5668\u3002\u6211\u4eec\u5c06\u8bbe\u7f6e\u7528\u6237\u540d\u3001\u5bc6\u7801\u3001\u8d85\u65f6\u65f6\u95f4\u4ee5\u53ca\u8fde\u63a5\u9009\u9879\u3002\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528connect\u65b9\u6cd5\u8fde\u63a5\u5230\u670d\u52a1\u5668\u3002<\/p>\n<p>&#8220;`java<\/p>\n<p>public void connect() {<\/p>\n<p>    MqttConnectOptions mqttConnectOptions = new MqttConnectOptions();<\/p>\n<p>    mqttConnectOptions.setAutomaticReconnect(true);<\/p>\n<p>    mqttConnectOptions.setCleanSession(true);<\/p>\n<p>    mqttConnectOptions.setConnectionTimeout(10);<\/p>\n<p>    mqttConnectOptions.setUserName(userName);<\/p>\n<p>    mqttConnectOptions.setPassword(password.toCharArray());<\/p>\n<p>    try {<\/p>\n<p>        mqttAndroidClient.connect(mqttConnectOptions, null, new IMqttActio<a href=\"https:\/\/www.anzhuoe.com\/\">\u5b89\u5353APP\u5f00\u53d1<\/a>nListener() {<\/p>\n<p>            @Override<\/p>\n<p>            public void onSuccess(IMqttToken asyncActionToken) {<\/p>\n<p>                Log.d(TAG, &#8220;Connection onSuccess&#8221;);<\/p>\n<p>            }<\/p>\n<p>            @Override<\/p>\n<p>            public void onFailure(IMqttToken asyncActionToken, Throwable exception) {<\/p>\n<p>                Log.e(TAG, &#8220;Connection onFailure: &#8221; + exception.toString());<\/p>\n<p>            }<\/p>\n<p>        });<\/p>\n<p>    } catch (MqttException e) {<\/p>\n<p>        e.printStackTrace();<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>5. \u65ad\u5f00\u4e0eMQTT\u670d\u52a1\u5668\u7684\u8fde\u63a5\uff1a<\/p>\n<p>\u5f53\u6211\u4eec\u4e0d\u518d\u9700\u8981\u4e0e\u670d\u52a1\u5668\u4fdd\u6301\u8fde\u63a5\u65f6\uff0c\u53ef\u4ee5\u8c03\u7528disconnect()\u65b9\u6cd5\u65ad\u5f00\u8fde\u63a5\u3002\u8fd9\u662f\u4e00\u4e2a\u597d\u7684\u5b9e\u8df5\uff0c\u4ee5\u9632\u6b62\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n<p>&#8220;`java<\/p>\n<p>public void disconnect() {<\/p>\n<p>    try {<\/p>\n<p>        mqttAndroidClient.disconnect();<\/p>\n<p>    } catch (MqttException e) {<\/p>\n<p>        e.printStackTrace();<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>6. \u53d1\u5e03\u6d88\u606f\uff1a<\/p>\n<p>\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u4e00\u4e2apublish()\u65b9\u6cd5\uff0c\u4ee5\u5728\u6307\u5b9a\u4e3b\u9898\u4e0a\u53d1\u5e03\u6d88\u606f\u3002\u4ee5\u4e0b\u662f\u53d1\u5e03\u65b9\u6cd5\u7684\u4ee3\u7801\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>public void publish(String topic, String payload, int qos, boolean retained) {<\/p>\n<p>    try {<\/p>\n<p>        mqttAndroidClient.publish(topic, payload.getBytes(), qos, retained);<\/p>\n<p>    } catch (MqttException e) {<\/p>\n<p>        e.printStackTrace();<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>7. \u8ba2\u9605\u4e3b\u9898\uff1a<\/p>\n<p>\u4e3a\u4e86\u63a5\u6536\u6765\u81ea\u7279\u5b9a\u4e3b\u9898\u7684\u6d88\u606f\uff0c\u6211\u4eec\u9700\u8981\u8ba2\u9605<a href=\"https:\/\/www.anzhuoe.com\/\">\u5b89\u5353app\u5236\u4f5c<\/a>\u5b83\u3002\u8ba2\u9605\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>public void subscribe(String topic, int qos) {<\/p>\n<p>    try {<\/p>\n<p>        mqttAndroidClient.subscribe(topic, qos, null, new IMqttActionListener() {<\/p>\n<p>            @Override<\/p>\n<p>            public void onSuccess(IMqttT<\/p>\n<p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.cdn.yimenapp.com\/2023-04\/07\/10\/25142971517.jpg\" \/><\/figure>\n<\/p>\n<p>oken asyncActionToken) {<\/p>\n<p>                Log.d(TAG, &#8220;Subscribed to &#8221; + topic);<\/p>\n<p>            }<\/p>\n<p>            @Override<\/p>\n<p>            public void onFailure(IMqttToken asyncActionToken, Throwable exception) {<\/p>\n<p>                Log.e(TAG, &#8220;Failed to subscribe to &#8221; + topic);<\/p>\n<p>            }<\/p>\n<p>        });<\/p>\n<\/p>\n<p>        \/\/ \u8bbe\u7f6e\u56de\u8c03\uff0c\u5f53\u6536\u5230\u8ba2\u9605\u7684\u6d88\u606f\u65f6\u89e6\u53d1<\/p>\n<p>        mqttAndroidClient.setCallback(new MqttCallback() {<\/p>\n<p>            @Override<\/p>\n<p>            public void connectionLost(Throwable cause) {<\/p>\n<p>                Log.d(TAG, &#8220;Connection lost: &#8221; + cause.toString());<\/p>\n<p>            }<\/p>\n<p>            @Override<\/p>\n<p>            public void messageArrived(String topic, MqttMessage message) throws Exception {<\/p>\n<p>                Log.d(TAG, &#8220;Message arrived: &#8221; + message.toString());<\/p>\n<p>            }<\/p>\n<p>            @Override<\/p>\n<p>            public void deliveryComplete(IMqttDeliveryToken token) {<\/p>\n<p>                Log.d(TAG, &#8220;Delivery complete&#8221;);<\/p>\n<p>            }<\/p>\n<p>        });<\/p>\n<\/p>\n<p>    } catch (MqttException e) {<\/p>\n<p>        e.printStackTrace();<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>\u81f3\u6b64\uff0c\u60a8\u5df2\u7ecf\u5b66\u4f1a\u4e86\u5982\u4f55\u5728Android\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528MQTT\u534f\u8bae\u3002\u6309\u7167\u672c\u6559\u7a0b\u7684\u6b65\u9aa4\uff0c\u60a8\u53ef\u4ee5\u5b8c\u6574\u5730\u5b9e\u73b0\u4e00\u4e2a\u57fa\u672c\u7684\u7269\u8054\u7f51\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MQTT \u5b89\u5353App\u5f00\u53d1: \u4e00\u4e2a\u8be6\u7ec6\u7684\u6559\u7a0b\u5f53\u6211\u4eec\u8c08\u8bba\u7269\u8054\u7f51\uff08Internet of Things\uff0c\u7b80\u79f0IoT\uff09\u65f6\uff0c\u6d88\u606f\u4f20\u8f93\u662f\u4e00\u4e2a\u81f3\u5173\u91cd\u8981\u7684\u7ec4\u6210\u90e8\u5206\u3002\u4e3a\u4e86\u5b9e\u73b0\u8bbe\u5907\u95f4\u7684\u6709\u6548\u901a\u4fe1\uff0c\u6709\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7f51\u7edc\u534f\u8bae\u88ab\u5927<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8479,22424,174,3358,22425],"class_list":["post-15264","post","type-post","status-publish","format-standard","hentry","category-zuoapp","tag-8479","tag-app","tag-174","tag-3358"],"_links":{"self":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/15264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/comments?post=15264"}],"version-history":[{"count":1,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/15264\/revisions"}],"predecessor-version":[{"id":15271,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/15264\/revisions\/15271"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/media?parent=15264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/categories?post=15264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/tags?post=15264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}