增加mqt的查询发送延迟

zh-module-applet/zh-applet-admin/src/main/java/org/jeecg/modules/appmana/service/impl/IotCommonP3ServiceImpl.java

@@ -749,6 +749,8 @@ public class IotCommonP3ServiceImpl {
                         QueryCmd queryCmd = LhIotUtil.ConstructCmd(batch);
                         String cmdStr = JSONObject.toJSONString(queryCmd);
                         mqttService.sendMessage(deploy.getDeviceIotUrl(), cmdStr);
+                        //增加延迟，发送太快会导致客户端忽略
+                        Thread.sleep(2000);
 
                         log.error("===========当前批次指令========={}============", batch);
                     }