{"id":771,"date":"2023-07-12T14:53:04","date_gmt":"2023-07-12T06:53:04","guid":{"rendered":"https:\/\/www.zhidianwl.net\/zhidianwl\/?p=771"},"modified":"2023-07-12T14:53:04","modified_gmt":"2023-07-12T06:53:04","slug":"app%e5%bc%80%e5%8f%91mqtt%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.net\/zhidianwl\/2023\/07\/12\/app%e5%bc%80%e5%8f%91mqtt%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d\/","title":{"rendered":"app\u5f00\u53d1mqtt\u662f\u4ec0\u4e48\u610f\u601d?"},"content":{"rendered":"

\u4e00\u3001MQTT\u7b80\u4ecb<\/p>\n

MQTT\uff08Message Queuing Telemetry Transport\uff0c\u6d88\u606f\u961f\u5217\u9065\u6d4b\u4f20\u8f93\uff09\u662f\u4e00\u79cd\u57fa\u4e8e\u5ba2\u6237\u7aef-\u670d\u52a1\u5668\u7684\u6d88\u606f\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u7684\u8f7b\u91cf\u7ea7\u901a\u8baf\u534f\u8bae\uff0c\u5b83\u662f\u4e3a\u4e86\u5927\u91cf\u53d7\u9650\u8bbe\u5907\u548c\u4f4e\u5e26\u5bbd\u3001\u9ad8\u5ef6\u8fdf\u6216\u4e0d\u7a33\u5b9a\u7f51\u7edc\u8fde\u63a5\u7684\u5e94\u7528\u73af\u5883\u800c\u8bbe\u8ba1\u3002MQTT\u4e3b\u8981\u7528\u4e8e\u4e07\u7ee9\u7269\u8054\u7f51\u3001\u5b9e\u65f6\u901a\u8baf\u65b9\u9762\u7684\u6280\u672f\u5e94\u7528\uff0c\u5b9e\u73b0\u8bbe\u5907\u4e4b\u95f4\u7684\u5373\u65f6\u901a\u4fe1\u3002<\/p>\n

\u4e8c\u3001MQTT\u7684\u6838\u5fc3\u7ec4\u4ef6\u53ca\u539f\u7406<\/p>\n

1. MQTT\u534f\u8bae\u7684\u4e09\u4e2a\u6838\u5fc3\u7ec4\u4ef6\uff1a<\/p>\n

– \u53d1\u5e03\u8005\uff08Publisher\uff09\uff1a\u8d1f\u8d23\u53d1\u5e03\u6d88\u606f\u7684\u5ba2\u6237\u7aef\uff0c\u53ef\u4ee5\u662f\u4f20\u611f\u5668\u3001\u63a7\u5236\u5668\u7b49\u7269\u8054\u7f51\u8bbe\u5907\u6216\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n

– \u8ba2\u9605\u8005\uff08Subscriber\uff09\uff1a\u8d1f\u8d23\u63a5\u6536\u7279\u5b9a\u4e3b\u9898\u6d88\u606f\u7684\u5ba2\u6237\u7aef\uff0c\u53ef\u4ee5\u662f\u7269\u8054\u7f51\u8bbe\u5907\u6216\u5e94\u7528\u7a0b\u5e8f\uff0c\u63a5\u6536\u5230\u6d88\u606f\u540e\u8fdb\u884c\u5904\u7406\u3002<\/p>\n

– \u6d88\u606f\u4ee3\u7406\uff08Broker\uff09\uff1a\u4e2d\u95f4\u670d\u52a1\u5668\u8bbe\u5907\uff0c\u8d1f\u8d23\u63a5\u6536\u53d1\u5e03\u8005\u53d1\u9001\u7684\u6d88\u606f\uff0c\u5e76\u5c06\u6d88\u606f\u63a8\u9001\u7ed9\u8ba2\u9605\u8005\u3002<\/p>\n

2. MQTT\u534f\u8bae\u91c7\u7528\u4e3b\u9898\uff08Topic\uff09\u4f5c\u4e3a\u6d88\u606f\u7684\u8fc7\u6ee4\u673a\u5236\u3002<\/p>\n

3. \u5de5\u4f5c\u539f\u7406\uff1a\u53d1\u5e03\u8005\u5c06\u6d88\u606f\u53d1\u5e03\u5230\u6307\u5b9a\u4e3b\u9898\u4e0a\uff0c\u6d88\u606f\u4ee3\u7406\u4ece\u53d1\u5e03\u8005\u63a5\u6536\u6d88\u606f\uff0c\u7136\u540e\u5c06\u6d88\u606f\u63a8\u9001\u7ed9\u8ba2\u9605\u4e86\u76f8\u5e94\u4e3b\u9898\u7684\u8ba2\u9605\u8005\u3002\u901a\u8fc7\u8fd9\u79cd\u5de5\u4f5c\u65b9\u5f0f\uff0c\u5404\u4e2a\u5ba2\u6237\u7aef\u4e0d\u9700\u8981\u76f4\u63a5\u8fde\u63a5\uff0c\u4f7f\u5f97\u6d88\u606f\u4f20\u9012\u53d8\u5f97\u66f4\u52a0\u9ad8\u6548\u548c\u7b80\u4fbf\u3002<\/p>\n

\u4e09\u3001MQTT\u7684\u4f18\u7f3a\u70b9<\/p>\n

1. \u4f18\u70b9\uff1a<\/p>\n

– \u534f\u8bae\u8f83\u7b80\u5355\uff0c\u6613\u4e8e\u5b9e\u73b0\u3002<\/p>\n

– \u4f20\u8f93\u901f\u5ea6\u5feb\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u901a\u4fe1\u3002<\/p>\n

– \u6d88\u606f\u4ee3\u7406\u5904\u7406\u6d88\u606f\u5206\u53d1\uff0c\u964d\u4f4e\u8bbe\u5907\u95f4\u901a\u4fe1\u590d\u6742APP\u5f00\u53d1<\/a>\u5ea6\u3002<\/p>\n

– \u652f\u6301QoS\uff08Quality of Service\uff0c\u670d\u52a1\u8d28\u91cf\uff09\u7ea7\u522b\u63a7\u5236\uff0c\u786e\u4fdd\u6d88\u606f\u4f20\u8f93\u53ef\u9760\u3002<\/p>\n

– \u826f\u597d\u7684\u5b89\u5168\u6027\uff0c\u652f\u6301TLS\/SSL\u52a0\u5bc6\u3002<\/p>\n

– \u53ef\u7528\u4e8e\u7f51\u7edc\u4e0d\u7a33\u5b9a\u7684\u73af\u5883\u3002<\/p>\n

2. \u7f3a\u70b9\uff1a<\/p>\n

– \u53ef\u80fd\u4f1a\u53d7\u5230\u7f51\u7edc\u4e0d\u7a33\u5b9a\u5bfc\u81f4\u7684\u6d88\u606f\u4e22\u5931\u3002<\/p>\n

– \u9700\u8981\u4f9d\u9760\u53ef\u9760\u7684\u6d88\u606f\u4ee3\u7406\uff0c\u5bb9\u6613\u9020\u6210\u5355\u70b9\u6545\u969c\u3002<\/p>\n

\u56db\u3001App\u4e2d\u5b9e\u73b0MQTT<\/p>\n

\u4e3a\u4e86\u5728App\u5f00\u53d1\u4e2d\u5b9e\u73b0MQTT\u534f\u8bae\uff0c\u53ef\u4ee5\u9009\u62e9\u76f8\u5e94\u7684MQTT\u5e93\uff0c\u5982\uff1aEclipse Paho\u3001Mosquitto\u7b49\u3002\u4ee5\u4e0b\u7b80\u4ecb\u5982\u4f55\u5728Android App\u4e2d\u5b9e\u73b0MQTT\uff1a<\/p>\n

1. \u5f15\u5165\u7b2c\u4e09\u65b9\u5e93\uff1a\u5728Android Studio\u4e2d\uff0c\u5728 `build.gradle` \u6587\u4ef6\u4e2d\u6dfb\u52a0 Eclipse Paho Android Service \u7684\u4f9d\u8d56\uff1a<\/p>\n

“`groovy<\/p>\n

dependencies {<\/p>\n

implementation ‘org.eclipse.paho.android:org.eclipse.paho.android.service:1.1.1’<\/p>\n

}<\/p>\n

“`<\/p>\n

2. \u521b\u5efaMQTT\u8fde\u63a5\uff1a\u7f16\u5199\u4e00\u4e2a\u7c7b\uff0c\u5982 `MQTTManager`\uff0c\u521b\u5efa\u8fde\u63a5\uff0c\u8bbe\u7f6e\u76f8\u5173\u53c2\u6570\uff1a<\/p>\n

“`java<\/p>\n

public class MQTTManager {<\/p>\n

private static final String BROKER_URI = “tcp:\/\/your_mqtt_server_ip:port”;<\/p>\n

private MqttAndroidClient mqttAndroidClient;<\/p>\n

public MQTTManager(Context context) {<\/p>\n

mqttAndroidClient = new MqttAndroidClient(context, BROKER_URI, MqttClient.generateClientId());<\/p>\n

}<\/p>\n

}<\/p>\n

“<\/p>\n

<\/figure>\n<\/p>\n

`<\/p>\n

3. \u5b9e\u73b0\u56de\u8c03\u63a5\u53e3\uff1a\u6dfb\u52a0\u56de\u8c03\u63a5\u53e3 `MqttCallback`:<\/p>\n

“`java<\/p>\n

public class MQTTManager implements MqttCallback {<\/p>\n

\/\/…MQTTManager\u7684\u5176\u4ed6\u4ee3\u7801<\/p>\n

public void setCallback() {<\/p>\n

mqttAndroidClient.setCallback(this);<\/p>\n

}<\/p>\n

@Override<\/p>\n

public void connectionLost(Throwable cause) {<\/p>\n

\/\/ \u8fde\u63a5\u4e22\u5931\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u5904\u7406\u76f8\u5173\u903b\u8f91<\/p>\n

}<\/p>\n

@Override<\/p>\n

public void messageArrived(String topic, MqttMessage message) throws Exception {<\/p>\n

\/\/ \u6536\u5230\u6d88\u606f\uff0cAPP<\/a>\u53ef\u4ee5\u5728\u8fd9\u91cc\u5904\u7406\u76f8\u5173\u903b\u8f91<\/p>\n

}<\/p>\n

@Override<\/p>\n

public void deliveryComplete(IMqttDeliveryToken token) {<\/p>\n

\/\/ \u6d88\u606f\u53d1\u9001\u6210\u529f\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u5904\u7406\u76f8\u5173\u903b\u8f91<\/p>\n

}<\/p>\n

}<\/p>\n

“`<\/p>\n

4. \u8fde\u63a5\u3001\u8ba2\u9605\u3001\u53d1\u5e03\uff1a<\/p>\n

“`java<\/p>\n

public class MQTTManager {<\/p>\n

\/\/ \u5b9e\u73b0\u8fde\u63a5<\/p>\n

public void connect(final IMqttActionListener listener) {<\/p>\n

try {<\/p>\n

IMqttToken token = mqttAndroidClient.connect();<\/p>\n

token.setActionCallback(listener);<\/p>\n

} catch (MqttException e) {<\/p>\n

e.printStackTrace();<\/p>\n

}<\/p>\n

}<\/p>\n

\/\/ \u8ba2\u9605\u4e3b\u9898<\/p>\n

public void subscribe(String topic) {<\/p>\n

try {<\/p>\n

mqttAndroidClient.subscribe(topic, 0);<\/p>\n

} catch (MqttException e) {<\/p>\n

e.printStackTrace();<\/p>\n

}<\/p>\n

}<\/p>\n

\/\/ \u53d1\u5e03\u6d88\u606f<\/p>\n

public void publish(String topic, String message) {<\/p>\n

try {<\/p>\n

MqttMessage mqttMessage = new MqttMessage();<\/p>\n

mqttMessage.setPayload(message.getBytes());<\/p>\n

mqttAndroidClient.publish(topic, mqttMessage);<\/p>\n

} catch (Exception e) {<\/p>\n

e.printStackTrace();<\/p>\n

}<\/p>\n

}<\/p>\n

}<\/p>\n

“`<\/p>\n

\u4e94\u3001\u603b\u7ed3<\/p>\n

MQTT\u534f\u8bae\u4e3aApp\u5f00\u53d1\u63d0\u4f9b\u4e86\u9ad8\u6548\u3001\u7a33\u5b9a\u3001\u5b9e\u65f6\u7684\u901a\u4fe1\u89e3\u51b3\u65b9\u6848\u3002\u901a\u8fc7\u5728App\u4e2d\u5f15\u5165MQTT\u534f\u8bae\u7684\u5b9e\u73b0\u5e93\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u7269\u8054\u7f51\u8bbe\u5907\u95f4\u7684\u5373\u65f6\u901a\u4fe1\u3002\u4ee5\u4e0a\u8be6\u7ec6\u8bb2\u89e3\u4e86MQTT\u534f\u8bae\u7684\u57fa\u672c\u77e5\u8bc6\u548c\u539f\u7406\uff0c\u4ee5\u53ca\u5982\u4f55\u5728Android App\u4e2d\u5b9e\u73b0MQTT\u534f\u8bae\uff0c\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5165\u95e8MQTT\u534f\u8bae\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001MQTT\u7b80\u4ecbMQTT\uff08Message Queuing Telemetry Transport\uff0c\u6d88\u606f\u961f\u5217\u9065\u6d4b\u4f20\u8f93\uff09\u662f\u4e00\u79cd\u57fa\u4e8e\u5ba2\u6237\u7aef-\u670d\u52a1\u5668\u7684\u6d88\u606f\u53d1\u5e03\/\u8ba2\u9605\u6a21\u5f0f\u7684\u8f7b\u91cf\u7ea7\u901a\u8baf\u534f\u8bae\uff0c\u5b83\u662f\u4e3a\u4e86\u5927\u91cf\u53d7\u9650\u8bbe\u5907<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1779,656,1780,1778,140],"topic":[],"class_list":{"0":"post-771","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-kaifaapp","7":"tag-app","8":"tag-656","10":"tag-1778","11":"tag-140"},"_links":{"self":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/771","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/comments?post=771"}],"version-history":[{"count":0,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/771\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/media?parent=771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/categories?post=771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/tags?post=771"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/topic?post=771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}