fix mqtt send msg topic

xueyi-common/xueyi-common-mqtt/src/main/java/com/xueyi/common/mqtt/configure/MqttConfig.java

@@ -33,6 +33,9 @@ public class MqttConfig {
     @Value("${emqx.topics}")
     private String topics;
 
+    @Value("${emqx.prefix}")
+    private String prefix;
+
     @Value("${emqx.fetchLogTopic}")
     private String fetchLogTopic;
 

xueyi-modules/xueyi-system/src/main/java/com/xueyi/system/emcs/controller/DmExceptionLogController.java

@@ -256,7 +256,7 @@ public class DmExceptionLogController extends BaseController<DmExceptionLogQuery
         devId = StringUtils.isEmpty(devId) ? json.getString("id") : devId;
         JSONObject jsonObject = new JSONObject();
         jsonObject.put("devId", devId);
-        mqttService.sendMessage(mqttConfig.getFetchLogTopic(), jsonObject.toJSONString());
+        mqttService.sendMessage(mqttConfig.getPrefix()+"/"+devId+mqttConfig.getFetchLogTopic(), jsonObject.toJSONString());
         return success("操作成功");
     }