云端下发指令：企业服务器下发指令到物联网设备

清疚 2023-10-05 08:53 3阅读 0赞

有兴趣了解企业服务器通过 AMQP 接入物联网平台的可以看我上一篇文章，下面说一下企业服务器下发指令到物联网设备，修改设备属性

##### 一、创建产品与设备 #####

还不清楚的查看下面文档  
[https://help.aliyun.com/document\_detail/73705.html?spm=a2c4g.11186623.6.566.27647cbcrXNYwD][https_help.aliyun.com_document_detail_73705.html_spm_a2c4g.11186623.6.566.27647cbcrXNYwD]

##### 二、下发指令修改属性 #####

**创建maven项目引入如下依赖**

<dependency>
        <groupId>com.aliyun</groupId>
        <artifactId>aliyun-java-sdk-iot</artifactId>
        <version>6.8.0</version>
    </dependency>
    
    
    
    <dependency>
        <groupId>com.aliyun</groupId>
        <artifactId>aliyun-java-sdk-core</artifactId>
        <version>3.5.1</version>
    </dependency>

**Java代码下发指令到灯设备，修改设备开关属性为0**

package org.example;
    
    import com.aliyuncs.DefaultAcsClient;
    import com.aliyuncs.exceptions.ClientException;
    import com.aliyuncs.iot.model.v20180120.SetDevicePropertyRequest;
    import com.aliyuncs.iot.model.v20180120.SetDevicePropertyResponse;
    import com.aliyuncs.profile.DefaultProfile;
    import com.aliyuncs.profile.IClientProfile;
    import org.json.JSONObject;
    
    public class App {
        
        public static void main(String[] args) throws ClientException {
        
         //将光标定位到账号头像上，选择accesskeys，如果使用子账户 RAM 的accesskeys记得授权物联网平台权限
            String accessKey = "LTAxxxxxxxxxxxxxxZr"; 
            String accessSecret = "jxxxxxxxxxxxxxxxxxxAkeR";
            DefaultProfile.addEndpoint("cn-shanghai", "cn-shanghai", "Iot", "iot.cn-shanghai.aliyuncs.com");
            IClientProfile profile = DefaultProfile.getProfile("cn-shanghai", accessKey, accessSecret);
            DefaultAcsClient client = new DefaultAcsClient(profile);
            SetDevicePropertyRequest request = new SetDevicePropertyRequest();
            //ProductKey 以及 DeviceName可以在设备信息详情页获取
            request.setProductKey("a1Ixxxxxxez6");
            request.setDeviceName("Dexxxxxht1");
            JSONObject itemJson = new JSONObject();
            //该选项为当前设备属性，下面给出具体位置
            itemJson.put("LightSwitch", 0);
            request.setItems(itemJson.toString());
    
            try {
        
                SetDevicePropertyResponse response = client.getAcsResponse(request);
                System.out.println(response.getRequestId() + ", success: " + response.getSuccess());
            } catch (ClientException e) {
        
                e.printStackTrace();
            }
        }
    }

##### 三、灯产品的详细信息 #####

此测试修改的设备信息如下

###### 1、基础信息 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center]

###### 2、产品属性 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center 1]

###### 3、属性是否可修改 ######

点击查看，发现此产品开关属性支持修改

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center 2]

##### 四、测试 #####

###### 1、打开在线测试 ######

从上到下依次选择产品设备，选择获取设备的开关属性，得到返回结果为 1  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center 3]

###### 2、运行程序，修改设备属性为 0 ######

运行结果如下，返回 true ，表示修改成功  
![在这里插入图片描述][2020082111564569.png_pic_center]

###### 3、如下，可以看到灯设备开关属性已经修改为 0 ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center 4]  
注意：修改设备属性是一定要保证，属性名以及属性值范围与产品预定义一直，否则会报错

[https_help.aliyun.com_document_detail_73705.html_spm_a2c4g.11186623.6.566.27647cbcrXNYwD]: https://help.aliyun.com/document_detail/73705.html?spm=a2c4g.11186623.6.566.27647cbcrXNYwD
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center 1]: https://img-blog.csdnimg.cn/20200821114813474.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3,size_16,color_FFFFFF,t_70#pic_center
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3_size_16_color_FFFFFF_t_70_pic_center 3]: https://img-blog.csdnimg.cn/20200821115411716.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM4MDk3,size_16,color_FFFFFF,t_70#pic_center
[2020082111564569.png_pic_center]: https://img-blog.csdnimg.cn/2020082111564569.png#pic_center
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