{"id":30988,"date":"2023-11-15T01:38:54","date_gmt":"2023-04-05T01:02:01","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e5%ae%9e%e7%8e%b0mqtt\/"},"modified":"2025-08-12T21:44:46","modified_gmt":"2025-08-12T13:44:46","slug":"%e4%bd%bf%e7%94%a8java%e5%ae%9e%e7%8e%b0mqtt","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e5%ae%9e%e7%8e%b0mqtt\/","title":{"rendered":"\u4f7f\u7528Java\u5b9e\u73b0MQTT"},"content":{"rendered":"<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d0a2237434c4406be36aa\/0-0.png\" alt=\"image.png\" \/>\u76ee\u5f55<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4f9d\u5b58\u95a2\u4fc2\u306e\u8ffd\u52a0<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MQTT\u63a5\u7d9a\u306e\u4f5c\u6210<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MQTT\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d1\u30d6\u30ea\u30c3\u30b7\u30e5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8cfc\u8aad<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c6\u30b9\u30c8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u307e\u3068\u3081<\/ul>\n<p>MQTT\u662f\u4e3a\u7269\u8054\u7f51\uff08IoT\uff09\u8bbe\u8ba1\u7684OASIS\u6807\u51c6\u6d88\u606f\u4f20\u8f93\u534f\u8bae\u3002MQTT\u88ab\u8bbe\u8ba1\u4e3a\u4e00\u79cd\u975e\u5e38\u8f7b\u91cf\u7ea7\u7684\u53d1\u5e03\/\u8ba2\u9605\u6d88\u606f\u4f20\u8f93\u65b9\u5f0f\uff0c\u9002\u7528\u4e8e\u8fde\u63a5\u4ee3\u7801\u8db3\u8ff9\u5c0f\u4e14\u7f51\u7edc\u5e26\u5bbd\u8f83\u4f4e\u7684\u8fdc\u7a0b\u8bbe\u5907\u3002\u5982\u4eca\uff0cMQTT\u5728\u6c7d\u8f66\u3001\u5236\u9020\u3001\u901a\u4fe1\u3001\u77f3\u6cb9\u548c\u5929\u7136\u6c14\u7b49\u5404\u4e2a\u884c\u4e1a\u5f97\u5230\u5e7f\u6cdb\u5e94\u7528\u3002<\/p>\n<p>\u672c\u6587\u5c06\u4ecb\u7ecd\u5728Java\u9879\u76ee\u4e2d\u5982\u4f55\u4f7f\u7528MQTT\u5b9e\u73b0\u5ba2\u6237\u7aef\u4e0e\u4ee3\u7406\u4e4b\u95f4\u7684\u8fde\u63a5\u3001\u8ba2\u9605\u3001\u53d6\u6d88\u8ba2\u9605\u3001\u53d1\u5e03\u4ee5\u53ca\u63a5\u6536\u6d88\u606f\u7b49\u529f\u80fd\u3002<\/p>\n<h2>\u6dfb\u52a0\u4f9d\u8d56\u5173\u7cfb\u8fd9\u7bc7\u6587\u7ae0\u7684\u5f00\u53d1\u73af\u5883\u662f\u4ee5\u4e0b\u7684:<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb: Maven<\/ul>\n<\/li>\n<\/ul>\n<p>IDE: IntelliJ IDEA<\/p>\n<p>Java: JDK 1.8.0<\/p>\n<p>\u4f5c\u4e3a\u5ba2\u6237\u7aef\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Eclipse Paho Java Client\u8fd9\u4e2a\u5728Java\u8bed\u8a00\u4e2d\u6700\u5e7f\u6cdb\u4f7f\u7528\u7684MQTT\u5ba2\u6237\u7aef\u5e93\u3002<\/p>\n<p>\u5728pom.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e0b\u5217\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;dependencies&gt;\r\n   &lt;dependency&gt;\r\n       &lt;groupId&gt;org.eclipse.paho&lt;\/groupId&gt;\r\n       &lt;artifactId&gt;org.eclipse.paho.client.mqttv3&lt;\/artifactId&gt;\r\n       &lt;version&gt;1.2.5&lt;\/version&gt;\r\n   &lt;\/dependency&gt;\r\n&lt;\/dependencies&gt;\r\n<\/code><\/pre>\n<h2>\u521b\u5efaMQTT\u8fde\u63a5<\/p>\n<h3>MQTT\u4ee3\u7406\u670d\u52a1\u5668\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u4f7f\u7528\u57fa\u65bcEMQX Cloud\u5275\u5efa\u7684\u514d\u8cbb\u516c\u5171MQTT\u4ee3\u7406\u3002\u4ee5\u4e0b\u662f\u670d\u52d9\u5668\u8a2a\u554f\u4fe1\u606f\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d6\u30ed\u30fc\u30ab\u30fc: http:\/\/broker.emqx.io<\/ul>\n<\/li>\n<\/ul>\n<p>TCP\u30dd\u30fc\u30c8: 1883<\/p>\n<p>SSL\/TLS\u30dd\u30fc\u30c8: 8883<\/p>\n<p>MQTT\u7ecf\u7eaa\u4eba\u9009\u5b9a\u5b9e\u8df5\u6307\u5357<\/p>\n<p>\u4e0b\u8f7d\u8fd9\u4e2a\u5b9e\u7528\u6307\u5357\uff0c\u5b66\u4e60\u9009\u62e9 MQTT \u4ee3\u7406\u65f6\u8981\u8003\u8651\u7684\u4e8b\u9879\u3002<\/p>\n<p>\u4e0b\u8f7d\u6307\u5357<\/p>\n<h3>\u8fde\u63a5\u8bbe\u7f6eMQTT\u7684\u57fa\u672c\u8fde\u63a5\u53c2\u6570\u3002\u7528\u6237\u540d\u548c\u5bc6\u7801\u662f\u53ef\u9009\u9879\u3002<\/p>\n<pre class=\"post-pre\"><code>String broker = \"tcp:\/\/broker.emqx.io:1883\";\r\n\/\/ TLS\/SSL\r\n\/\/ String broker = \"ssl:\/\/broker.emqx.io:8883\"; \r\nString username = \"emqx\";\r\nString password = \"public\";\r\nString clientid = \"publish_client\";\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u521b\u5efaMQTT\u5ba2\u6237\u7aef\u5e76\u8fde\u63a5\u5230\u4ee3\u7406\u3002<\/p>\n<pre class=\"post-pre\"><code>MqttClient client = new MqttClient(broker, clientid, new MemoryPersistence());\r\nMqttConnectOptions options = new MqttConnectOptions();\r\noptions.setUserName(username); \r\noptions.setPassword(password.toCharArray());\r\nclient.connect(options);\r\n<\/code><\/pre>\n<p>\u89e3\u91ca<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MqttClient: MqttClient\u306f\u3001MQTT\u30a2\u30af\u30b7\u30e7\u30f3\u304c\u5b8c\u4e86\u3059\u308b\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u5236\u5fa1\u3092\u623b\u3059\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u30e1\u30bd\u30c3\u30c9\u306e\u30bb\u30c3\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MqttClientPersistence: \u9001\u53d7\u4fe1\u4e2d\u306e\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u683c\u7d0d\u3059\u308b\u6c38\u7d9a\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u8868\u3057\u3001\u6307\u5b9a\u3055\u308c\u305fQoS\u3067\u306e\u914d\u4fe1\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MqttConnectOptions: \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3059\u308b\u65b9\u6cd5\u3092\u5236\u5fa1\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u30bb\u30c3\u30c8\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002 \u3053\u3053\u3067\u306f\u3001\u4e00\u822c\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3059:<\/ul>\n<\/li>\n<\/ul>\n<p>setUserName: \u63a5\u7d9a\u306b\u4f7f\u7528\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u540d\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\nsetPassword: \u63a5\u7d9a\u306b\u4f7f\u7528\u3059\u308b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\nsetCleanSession: \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u304c\u518d\u8d77\u52d5\u3068\u518d\u63a5\u7d9a\u3067\u72b6\u614b\u3092\u8a18\u61b6\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\nsetKeepAliveInterval: \u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6\u30a4\u30f3\u30bf\u30fc\u30d0\u30eb\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\nsetConnectionTimeout: \u63a5\u7d9a\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\nsetAutomaticReconnect: \u63a5\u7d9a\u304c\u5931\u308f\u308c\u305f\u5834\u5408\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u518d\u63a5\u7d9a\u3092\u81ea\u52d5\u7684\u306b\u8a66\u307f\u308b\u304b\u3069\u3046\u304b\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<h3>\u901a\u8fc7TLS\/SSL\u8fdb\u884c\u8fde\u63a5\u3002<br \/>\n\u5982\u679c\u8981\u5728TLS\/SSL\u8fde\u63a5\u4e2d\u4f7f\u7528\u81ea\u7b7e\u540d\u8bc1\u4e66\uff0c\u53ef\u4ee5\u5728pom.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0bcpkix-jdk15on\u5e93\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;!-- https:\/\/mvnrepository.com\/artifact\/org.bouncycastle\/bcpkix-jdk15on --&gt;\r\n&lt;dependency&gt;\r\n   &lt;groupId&gt;org.bouncycastle&lt;\/groupId&gt;\r\n   &lt;artifactId&gt;bcpkix-jdk15on&lt;\/artifactId&gt;\r\n   &lt;version&gt;1.70&lt;\/version&gt;\r\n&lt;\/dependency&gt;\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aSSLUtils.java\u7684\u6587\u4ef6\uff0c\u5176\u4e2d\u5305\u542b\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code>package io.emqx.mqtt;\r\n\r\nimport org.bouncycastle.jce.provider.BouncyCastleProvider;\r\nimport org.bouncycastle.openssl.PEMKeyPair;\r\nimport org.bouncycastle.openssl.PEMParser;\r\nimport org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;\r\n\r\nimport javax.net.ssl.KeyManagerFactory;\r\nimport javax.net.ssl.SSLContext;\r\nimport javax.net.ssl.SSLSocketFactory;\r\nimport javax.net.ssl.TrustManagerFactory;\r\nimport java.io.BufferedInputStream;\r\nimport java.io.FileInputStream;\r\nimport java.io.FileReader;\r\nimport java.security.KeyPair;\r\nimport java.security.KeyStore;\r\nimport java.security.Security;\r\nimport java.security.cert.CertificateFactory;\r\nimport java.security.cert.X509Certificate;\r\n\r\npublic class SSLUtils {\r\n   public static SSLSocketFactory getSocketFactory(final String caCrtFile,\r\n                                                   final String crtFile, final String keyFile, final String password)\r\n           throws Exception {\r\n       Security.addProvider(new BouncyCastleProvider());\r\n\r\n       \/\/ load CA certificate\r\n       X509Certificate caCert = null;\r\n\r\n       FileInputStream fis = new FileInputStream(caCrtFile);\r\n       BufferedInputStream bis = new BufferedInputStream(fis);\r\n       CertificateFactory cf = CertificateFactory.getInstance(\"X.509\");\r\n\r\n       while (bis.available() &gt; 0) {\r\n           caCert = (X509Certificate) cf.generateCertificate(bis);\r\n      }\r\n\r\n       \/\/ load client certificate\r\n       bis = new BufferedInputStream(new FileInputStream(crtFile));\r\n       X509Certificate cert = null;\r\n       while (bis.available() &gt; 0) {\r\n           cert = (X509Certificate) cf.generateCertificate(bis);\r\n      }\r\n\r\n       \/\/ load client private key\r\n       PEMParser pemParser = new PEMParser(new FileReader(keyFile));\r\n       Object object = pemParser.readObject();\r\n       JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider(\"BC\");\r\n       KeyPair key = converter.getKeyPair((PEMKeyPair) object);\r\n       pemParser.close();\r\n\r\n       \/\/ CA certificate is used to authenticate server\r\n       KeyStore caKs = KeyStore.getInstance(KeyStore.getDefaultType());\r\n       caKs.load(null, null);\r\n       caKs.setCertificateEntry(\"ca-certificate\", caCert);\r\n       TrustManagerFactory tmf = TrustManagerFactory.getInstance(\"X509\");\r\n       tmf.init(caKs);\r\n\r\n       \/\/ client key and certificates are sent to server so it can authenticate\r\n       KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());\r\n       ks.load(null, null);\r\n       ks.setCertificateEntry(\"certificate\", cert);\r\n       ks.setKeyEntry(\"private-key\", key.getPrivate(), password.toCharArray(),\r\n               new java.security.cert.Certificate[]{cert});\r\n       KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory\r\n              .getDefaultAlgorithm());\r\n       kmf.init(ks, password.toCharArray());\r\n\r\n       \/\/ finally, create SSL socket factory\r\n       SSLContext context = SSLContext.getInstance(\"TLSv1.2\");\r\n       context.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);\r\n\r\n       return context.getSocketFactory();\r\n  }\r\n}\r\n<\/code><\/pre>\n<p>\u5c06\u9009\u9879\u8bbe\u5b9a\u4e3a\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code>String broker = \"ssl:\/\/broker.emqx.io:8883\";\r\n\/\/ \u30bd\u30b1\u30c3\u30c8\u30d5\u30a1\u30af\u30c8\u30ea\u3092\u8a2d\u5b9a\r\nString caFilePath = \"\/cacert.pem\";\r\nString clientCrtFilePath = \"\/client.pem\";\r\nString clientKeyFilePath = \"\/client.key\";\r\nSSLSocketFactory socketFactory = getSocketFactory(caFilePath, clientCrtFilePath, clientKeyFilePath, \"\");\r\noptions.setSocketFactory(socketFactory);\r\n<\/code><\/pre>\n<h2>\u53d1\u5e03MQTT\u6d88\u606f<br \/>\n\u521b\u5efa\u4e00\u4e2aPublishSample\u7c7b\uff0c\u5411mqtt\/test\u4e3b\u9898\u53d1\u5e03Hello MQTT\u6d88\u606f\u3002<\/p>\n<pre class=\"post-pre\"><code>package io.emqx.mqtt;\r\n\r\nimport org.eclipse.paho.client.mqttv3.MqttClient;\r\nimport org.eclipse.paho.client.mqttv3.MqttConnectOptions;\r\nimport org.eclipse.paho.client.mqttv3.MqttException;\r\nimport org.eclipse.paho.client.mqttv3.MqttMessage;\r\nimport org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;\r\n\r\npublic class PublishSample {\r\n\r\n   public static void main(String[] args) {\r\n\r\n       String broker = \"tcp:\/\/broker.emqx.io:1883\";\r\n       String topic = \"mqtt\/test\";\r\n       String username = \"emqx\";\r\n       String password = \"public\";\r\n       String clientid = \"publish_client\";\r\n       String content = \"Hello MQTT\";\r\n       int qos = 0;\r\n\r\n       try {\r\n           MqttClient client = new MqttClient(broker, clientid, new MemoryPersistence());\r\n           MqttConnectOptions options = new MqttConnectOptions();\r\n           options.setUserName(username);\r\n           options.setPassword(password.toCharArray());\r\n           options.setConnectionTimeout(60);\r\n      options.setKeepAliveInterval(60);\r\n           \/\/ connect\r\n           client.connect(options);\r\n           \/\/ create message and setup QoS\r\n           MqttMessage message = new MqttMessage(content.getBytes());\r\n           message.setQos(qos);\r\n           \/\/ publish message\r\n           client.publish(topic, message);\r\n           System.out.println(\"Message published\");\r\n           System.out.println(\"topic: \" + topic);\r\n           System.out.println(\"message content: \" + content);\r\n           \/\/ disconnect\r\n           client.disconnect();\r\n           \/\/ close client\r\n           client.close();\r\n      } catch (MqttException e) {\r\n           throw new RuntimeException(e);\r\n      }\r\n  }\r\n}\r\n<\/code><\/pre>\n<h2>\u8ba2\u9605\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aSubscribeSample\u7684\u7c7b\u6765\u8ba2\u9605mqtt\/test\u4e3b\u9898\u3002<\/p>\n<pre class=\"post-pre\"><code>package io.emqx.mqtt;\r\n\r\nimport org.eclipse.paho.client.mqttv3.*;\r\nimport org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;\r\n\r\npublic class SubscribeSample {\r\n   public static void main(String[] args) {\r\n       String broker = \"tcp:\/\/broker.emqx.io:1883\";\r\n       String topic = \"mqtt\/test\";\r\n       String username = \"emqx\";\r\n       String password = \"public\";\r\n       String clientid = \"subscribe_client\";\r\n       int qos = 0;\r\n\r\n       try {\r\n           MqttClient client = new MqttClient(broker, clientid, new MemoryPersistence());\r\n           \/\/ connect options\r\n           MqttConnectOptions options = new MqttConnectOptions();\r\n           options.setUserName(username);\r\n           options.setPassword(password.toCharArray());\r\n           options.setConnectionTimeout(60);\r\n      options.setKeepAliveInterval(60);\r\n           \/\/ setup callback\r\n           client.setCallback(new MqttCallback() {\r\n\r\n               public void connectionLost(Throwable cause) {\r\n                   System.out.println(\"connectionLost: \" + cause.getMessage());\r\n              }\r\n\r\n               public void messageArrived(String topic, MqttMessage message) {\r\n                   System.out.println(\"topic: \" + topic);\r\n                   System.out.println(\"Qos: \" + message.getQos());\r\n                   System.out.println(\"message content: \" + new String(message.getPayload()));\r\n\r\n              }\r\n\r\n               public void deliveryComplete(IMqttDeliveryToken token) {\r\n                   System.out.println(\"deliveryComplete---------\" + token.isComplete());\r\n              }\r\n\r\n          });\r\n           client.connect(options);\r\n           client.subscribe(topic, qos);\r\n      } catch (Exception e) {\r\n           e.printStackTrace();\r\n      }\r\n  }\r\n}\r\n<\/code><\/pre>\n<p>MqttCallback:<\/p>\n<p>MQTT\u56de\u8c03\u51fd\u6570<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">connectionLost(Throwable cause): \u3053\u308c\u306f\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u63a5\u7d9a\u304c\u5931\u308f\u308c\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">messageArrived(String topic, MqttMessage message): \u3053\u308c\u306f\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u5230\u7740\u3057\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">deliveryComplete(IMqttDeliveryToken token): \u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u914d\u4fe1\u304c\u5b8c\u4e86\u3057\u3001\u3059\u3079\u3066\u306e\u78ba\u8a8d\u5fdc\u7b54\u304c\u53d7\u4fe1\u3055\u308c\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002<\/ul>\n<h2>\u8003\u8bd5 sh\u00ec)\u63a5\u4e0b\u6765\uff0c\u6267\u884cSubscribeSample\uff0c\u8ba2\u9605mqtt\/test\u4e3b\u9898\u3002\u7136\u540e\uff0c\u6267\u884cPublishSample\uff0c\u53d1\u5e03\u4e00\u6761\u6d88\u606f\u5230mqtt\/test\u4e3b\u9898\u3002\u60a8\u4f1a\u770b\u5230\u53d1\u5e03\u8005\u6210\u529f\u53d1\u5e03\u4e86\u6d88\u606f\uff0c\u5e76\u4e14\u8ba2\u9605\u8005\u63a5\u6536\u5230\u4e86\u8be5\u6d88\u606f\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d0a2237434c4406be36aa\/42-0.png\" alt=\"image.png\" \/><\/p>\n<h2>\u603b\u7ed3\u901a\u8fc7\u4f7f\u7528Paho Java Client\u4f5c\u4e3aMQTT\u5ba2\u6237\u7aef\uff0c\u6211\u4eec\u6210\u529f\u5730\u8fde\u63a5\u5230\u516c\u5171MQTT\u670d\u52a1\u5668\uff0c\u5e76\u5b9e\u73b0\u4e86\u6d88\u606f\u7684\u53d1\u5e03\u548c\u8ba2\u9605\u3002<\/p>\n<p>\u53ef\u5728\u6b64\u5904\u83b7\u53d6\u5b8c\u6574\u7684\u4ee3\u7801\uff1ahttps:\/\/github.com\/emqx\/MQTT-Client-Examples\/tree\/master\/mqtt-client-Java\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u60a8\u53ef\u4ee5\u67e5\u770bEMQ\u63d0\u4f9b\u7684\u4e00\u7cfb\u5217\u6613\u4e8e\u7406\u89e3\u7684MQTT\u534f\u8bae\u6307\u5357\u6587\u7ae0\uff0c\u901a\u8fc7\u5b66\u4e60MQTT\u534f\u8bae\u7684\u529f\u80fd\uff0c\u8fdb\u4e00\u6b65\u63a2\u7d22MQTT\u7684\u9ad8\u7ea7\u5e94\u7528\uff0c\u4ee5\u53ca\u5f00\u59cb\u8fdb\u884cMQTT\u5e94\u7528\u548c\u670d\u52a1\u5f00\u53d1\u3002<\/p>\n<p>\u76f8\u5173\u8d44\u6e90\uff1a<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">WebSocket\u3092\u4f7f\u7528\u3057\u305fMQTT\u306e\u30af\u30a4\u30c3\u30af\u30b9\u30bf\u30fc\u30c8\u30ac\u30a4\u30c9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ESP32\u3067\u306eMQTT: \u521d\u5fc3\u8005\u5411\u3051\u30ac\u30a4\u30c9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">[Python\u3067\u306ePaho\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u305fMQTT\u306e\u4f7f\u3044\u65b9](<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u5f55 \u4f9d\u5b58\u95a2\u4fc2\u306e\u8ffd\u52a0 &nbsp; MQTT\u63a5\u7d9a\u306e\u4f5c\u6210 &nbsp; MQTT\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d1\u30d6\u30ea\u30c3\u30b7\u30e5 &#038;nb [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30988","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4f7f\u7528Java\u5b9e\u73b0MQTT - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u4f7f\u7528Java\u5b9e\u73b0MQTT\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u5b9e\u73b0mqtt\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" 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