add 增加 ruoyi-common-mqtt 模块

ruoyi-modules/ruoyi-demo/src/main/java/org/dromara/demo/controller/MqttController.java

@@ -0,0 +1,69 @@
+package org.dromara.demo.controller;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.dromara.demo.domain.TestDemo;
+import org.dromara.mica.mqtt.codec.MqttQoS;
+import org.dromara.mica.mqtt.codec.message.MqttPublishMessage;
+import org.dromara.mica.mqtt.core.annotation.MqttClientSubscribe;
+import org.dromara.mica.mqtt.core.deserialize.MqttJsonDeserializer;
+import org.dromara.mica.mqtt.spring.client.MqttClientTemplate;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.nio.charset.StandardCharsets;
+
+/**
+ * mqtt 演示案例
+ * <p>
+ * 用法文档 <a href="https://gitee.com/dromara/mica-mqtt/blob/master/starter/mica-mqtt-client-spring-boot-starter/README.md">...</a>
+ *
+ * @author Lion Li
+ */
+@RequiredArgsConstructor
+@RestController
+@RequestMapping("/demo/mqtt")
+@Slf4j
+public class MqttController {
+
+    private final MqttClientTemplate client;
+
+    @GetMapping("/send")
+    public boolean send() {
+        client.publish("/test/client", "测试测试".getBytes(StandardCharsets.UTF_8));
+        return true;
+    }
+
+    @MqttClientSubscribe("/test/#")
+    public void subQos0(String topic, byte[] payload) {
+        log.info("topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
+    }
+
+    @MqttClientSubscribe(value = "/qos1/#", qos = MqttQoS.QOS1)
+    public void subQos1(String topic, byte[] payload) {
+        log.info("topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
+    }
+
+    @MqttClientSubscribe("/sys/${productKey}/${deviceName}/thing/sub/register")
+    public void thingSubRegister(String topic, byte[] payload) {
+        // 1.3.8 开始支持，@MqttClientSubscribe 注解支持 ${} 变量替换，会默认替换成 +
+        // 注意：mica-mqtt 会先从 Spring boot 配置中替换参数 ${}，如果存在配置会优先被替换。
+        log.info("topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
+    }
+
+    @MqttClientSubscribe(
+        value = "/test/json",
+        deserialize = MqttJsonDeserializer.class // 2.4.5 开始支持 自定义序列化，默认 json 序列化
+    )
+    public void testJson(String topic, MqttPublishMessage message, TestDemo data) {
+        // 2.4.5 开始支持，支持 2 到 3 个参数，字段类型映射规则如下
+        // String 字符串会默认映射到 topic，
+        // MqttPublishMessage 会默认映射到 原始的消息，可以拿到 mqtt5 的 props 参数
+        // byte[] 会映射到 mqtt 消息内容 payload
+        // ByteBuffer 会映射到 mqtt 消息内容 payload
+        // 其他类型会走序列化，确保消息能够序列化，默认为 json 序列化
+        log.info("topic:{} json data:{}", topic, data);
+    }
+
+}