阿里雲物聯網平臺遠程配置功能JAVA 示例參考

時間 2019-11-12

原文原文鏈接

概述

不少場景下，開發者須要更新設備的配置信息，包括設備的系統參數、網絡參數、本地策略等。一般狀況下，是經過固件升級的方式更新設備的配置信息。可是，這將加大固件版本的維護工做，而且須要設備中斷運行以完成更新。爲了解決上述問題，物聯網平臺提供了遠程配置更新的功能，設備無需重啓或中斷運行便可在線完成配置信息的更新。本文主要演示如何使用JAVA SDK實現兩種應用場景。html

原理說明

一、物聯網平臺提供的遠程配置功能，支持：api

開啓/關閉遠程配置。
在線編輯配置文件，並管理版本。
批量更新設備配置信息。
設備主動請求更新配置信息。

二、流程圖網絡

三、遠程配置大體分爲三部分：ide

生成配置文件：您在物聯網平臺控制檯編輯並保存配置信息。
推送配置文件：您在物聯網平臺控制檯批量推送配置信息給設備。設備接收後，修改本地配置文件。
設備主動請求配置信息：設備主動向雲端請求新的配置文件，並進行更新。

遠程配置使用分爲兩種場景，一種是雲端推送配置信息給設備端，一種是設備端主動請求配置信息。根據場景的不一樣，遠程配置的步驟也有所區別。url

場景一：雲端推送配置信息給設備端

一、設備端業務代碼實現spa

import com.aliyun.alink.dm.api.DeviceInfo;
import com.aliyun.alink.dm.api.InitResult;
import com.aliyun.alink.dm.api.IoTApiClientConfig;
import com.aliyun.alink.linkkit.api.ILinkKitConnectListener;
import com.aliyun.alink.linkkit.api.IoTMqttClientConfig;
import com.aliyun.alink.linkkit.api.LinkKit;
import com.aliyun.alink.linkkit.api.LinkKitInitParams;
import com.aliyun.alink.linksdk.cmp.connect.channel.MqttSubscribeRequest;
import com.aliyun.alink.linksdk.cmp.core.base.AMessage;
import com.aliyun.alink.linksdk.cmp.core.base.ConnectState;
import com.aliyun.alink.linksdk.cmp.core.listener.IConnectNotifyListener;
import com.aliyun.alink.linksdk.cmp.core.listener.IConnectSubscribeListener;
import com.aliyun.alink.linksdk.tools.AError;

public class DeviceCOTADemo1 {

    public static void main(String[] args) {
        String regionId = "cn-shanghai";
        DeviceInfo deviceInfo = new DeviceInfo();
        deviceInfo.productKey = "******";
        deviceInfo.deviceName = "******";
        deviceInfo.deviceSecret = "********";

        LinkKitInitParams params = new LinkKitInitParams();
        IoTMqttClientConfig config = new IoTMqttClientConfig();
        config.productKey = deviceInfo.productKey;
        config.deviceName = deviceInfo.deviceName;
        config.deviceSecret = deviceInfo.deviceSecret;
        config.channelHost = deviceInfo.productKey + ".iot-as-mqtt." + regionId + ".aliyuncs.com:1883";
        params.mqttClientConfig = config;
        params.connectConfig = new IoTApiClientConfig();
        params.deviceInfo = deviceInfo;

        /**創建鏈接**/
        LinkKit.getInstance().init(params, new ILinkKitConnectListener() {
            @Override
            public void onError(AError aError) {
                System.out.println("初始化失敗 " + aError.getMsg());
            }

            @Override
            public void onInitDone(InitResult initResult) {

                System.out.println("初始化成功 " + initResult.tsl);

                String pd = deviceInfo.productKey + "/" + deviceInfo.deviceName;

                // 一、cota 請求 Topic
                String requestcotaTopic = "/sys/"+pd+"/thing/config/push";

                // 訂閱Topic
                MqttSubscribeRequest upgradeTopicRequest = new MqttSubscribeRequest();
                upgradeTopicRequest.topic = requestcotaTopic;
                upgradeTopicRequest.isSubscribe = true;

                // 直接作Topic的訂閱
                LinkKit.getInstance().subscribe(upgradeTopicRequest, new IConnectSubscribeListener(){
                    @Override
                    public void onSuccess() {
                        System.out.println("cota訂閱成功");
                    }

                    @Override
                    public void onFailure(AError aError) {
                        System.out.println("直接訂閱失敗" + aError.getMsg());
                    }
                });

                // 註冊ota下行監聽
                LinkKit.getInstance().registerOnNotifyListener(new IConnectNotifyListener() {
                    @Override
                    public void onNotify(String s, String s1, AMessage aMessage) {

                        System.out.println("cota 監聽響應:");
                        System.out.println(new String((byte[])aMessage.getData()));
                    }

                    @Override
                    public boolean shouldHandle(String s, String s1) {
                        return false;
                    }

                    @Override
                    public void onConnectStateChange(String s, ConnectState connectState) {
                        System.out.println("鏈接狀態發生變化 ：" + s + connectState);
                    }
                });

            }
        });
    }
}

二、管理門戶配置遠程控制，詳細步驟參考連接。3d

三、啓動設備端程序，管理門戶批量更新，設備端獲取信息(批量更新頻率限制：一小時內僅容許操做一次)：code

{"method":"thing.config.push","id":"1296799269","params":{"getType":"file","configId":"92eb82a17a7441111f7dcb830e93ed79","sign":"568e9211117eedc9eadbc2907719fe2086348f572ddd3f373d6f297ba5aba4d1","configSize":12,"signMethod":"Sha256","url":"https://otx-devicecenter-thing-config-cn-shanghai-online.oss-cn-shanghai.aliyuncs.com/11zisMUtYDk/1567338668042_gz2Qs7hl?Expires=1567340568&OSSAccessKeyId=1111113rx5dg2JBm&Signature=S0LS9H%1111zJqTg%2Fphf19%2BfE%2F2bs%3D"},"version":"1.0"}

場景二：設備主動請求配置信息

一、設備端業務代碼實現htm

import com.aliyun.alink.dm.api.DeviceInfo;
import com.aliyun.alink.dm.api.InitResult;
import com.aliyun.alink.dm.api.IoTApiClientConfig;
import com.aliyun.alink.linkkit.api.ILinkKitConnectListener;
import com.aliyun.alink.linkkit.api.IoTMqttClientConfig;
import com.aliyun.alink.linkkit.api.LinkKit;
import com.aliyun.alink.linkkit.api.LinkKitInitParams;
import com.aliyun.alink.linksdk.cmp.connect.channel.MqttPublishRequest;
import com.aliyun.alink.linksdk.cmp.connect.channel.MqttSubscribeRequest;
import com.aliyun.alink.linksdk.cmp.core.base.AMessage;
import com.aliyun.alink.linksdk.cmp.core.base.ARequest;
import com.aliyun.alink.linksdk.cmp.core.base.AResponse;
import com.aliyun.alink.linksdk.cmp.core.base.ConnectState;
import com.aliyun.alink.linksdk.cmp.core.listener.IConnectNotifyListener;
import com.aliyun.alink.linksdk.cmp.core.listener.IConnectSendListener;
import com.aliyun.alink.linksdk.cmp.core.listener.IConnectSubscribeListener;
import com.aliyun.alink.linksdk.tools.AError;

public class DeviceCOTADemo2 {

    public static void main(String[] args) {
        String regionId = "cn-shanghai";
        DeviceInfo deviceInfo = new DeviceInfo();
        deviceInfo.productKey = "******";
        deviceInfo.deviceName = "******";
        deviceInfo.deviceSecret = "********";

        LinkKitInitParams params = new LinkKitInitParams();
        IoTMqttClientConfig config = new IoTMqttClientConfig();
        config.productKey = deviceInfo.productKey;
        config.deviceName = deviceInfo.deviceName;
        config.deviceSecret = deviceInfo.deviceSecret;
        config.channelHost = deviceInfo.productKey + ".iot-as-mqtt." + regionId + ".aliyuncs.com:1883";
        params.mqttClientConfig = config;
        params.connectConfig = new IoTApiClientConfig();
        params.deviceInfo = deviceInfo;

        /**創建鏈接**/
        LinkKit.getInstance().init(params, new ILinkKitConnectListener() {
            @Override
            public void onError(AError aError) {
                System.out.println("初始化失敗 " + aError.getMsg());
            }

            @Override
            public void onInitDone(InitResult initResult) {

                System.out.println("初始化成功 " + initResult.tsl);

                String pd = deviceInfo.productKey + "/" + deviceInfo.deviceName;

                // 一、設備端訂閱Topic：/sys/${productKey}/${deviceName}/thing/config/get_reply
                String requestcotaTopic = "/sys/"+pd+"/thing/config/get_reply";
                MqttSubscribeRequest upgradeTopicRequest = new MqttSubscribeRequest();
                upgradeTopicRequest.topic = requestcotaTopic;
                upgradeTopicRequest.isSubscribe = true;
                LinkKit.getInstance().subscribe(upgradeTopicRequest, new IConnectSubscribeListener(){
                    @Override
                    public void onSuccess() {
                        System.out.println("ota訂閱成功");
                    }

                    @Override
                    public void onFailure(AError aError) {
                        System.out.println("直接訂閱失敗" + aError.getMsg());
                    }
                });

                // 註冊下行監聽
                LinkKit.getInstance().registerOnNotifyListener(new IConnectNotifyListener() {
                    @Override
                    public void onNotify(String s, String s1, AMessage aMessage) {

                        System.out.println("cota 監聽響應:");
                        System.out.println(new String((byte[])aMessage.getData()));
                    }

                    @Override
                    public boolean shouldHandle(String s, String s1) {
                        return false;
                    }

                    @Override
                    public void onConnectStateChange(String s, ConnectState connectState) {
                        System.out.println("鏈接狀態發生變化 ：" + s + connectState);
                    }
                });

                // 四、設備經過Topic /sys/${productKey}/${deviceName}/thing/config/get主動查詢最新的配置信息
                String requestTopic = "/sys/"+pd+"/thing/config/get";

                System.out.println("發送消息" + requestTopic);

                // 訂閱Topic
                MqttPublishRequest request = new MqttPublishRequest();
                request.topic = requestTopic;
                request.payloadObj = "{\"id\":\"123\",\"method\":\"thing.config.get\",\"params\":{\"getType\":\"file\",\"configScope\":\"product\"},\"version\":\"1.0\"}";

                // 直接作Topic的發送
                LinkKit.getInstance().publish(request, new IConnectSendListener() {
                    @Override
                    public void onResponse(ARequest aRequest, AResponse aResponse) {
                        System.out.println("請求發送成功 " + aResponse.getData());
                    }

                    @Override
                    public void onFailure(ARequest aRequest, AError aError) {
                        System.out.println("請求發送成功 " + aError.getMsg());
                    }
                });
            }
        });
    }
}

二、運行結果(/sys/${productKey}/${deviceName}/thing/config/get_reply 訂閱獲取的內容)blog

{"code":200,"data":{"configId":"a9415f2d6e444d7f9e60a3d46f11d566","configSize":18,"getType":"file","sign":"112f38e7345a2ac46d9f80a401886727f27de96ebf1c82b6825df4b31116ab02","signMethod":"Sha256","url":"https://otx-devicecenter-thing-config-cn-shanghai-online.oss-cn-shanghai.aliyuncs.com/11D8NwXCe56/1567337893929_gpUFnE69?Expires=1567339979&OSSAccessKeyId=11AIRY3rx5dg2JBm&Signature=1112qy8bOsa48elOQFt4qHQGaqk%3D"},"id":"123","method":"thing.config.get","version":"1.0"}

原文連接本文爲雲棲社區原創內容，未經容許不得轉載。