阿里物联网套件-服务端SDK学习实践（基础篇-10批量获取设备状态）

批量获取设备状态

public class BatchGetDeviceStateTest {    public static void main(String[] args) {        DefaultAcsClient client = BaseTest.init();        BatchGetDeviceStateRequest request = new BatchGetDeviceStateRequest();        request.setProductKey("******");        List<String> devices = new ArrayList<String>();        devices.add("test_a");        devices.add("test_b");        devices.add("test_c");        request.setDeviceNames(devices);        BatchGetDeviceStateResponse response =  null;        try {            response = client.getAcsResponse(request);        } catch (ClientException e) {          e.printStackTrace();        }        if(response != null){            System.out.println(ToStringBuilder.reflectionToString(response, ToStringStyle.SHORT_PREFIX_STYLE));            Iterator<DeviceStatus> iterator = response.getDeviceStatusList().iterator();            while(iterator.hasNext()){                DeviceStatus next = iterator.next();                System.out.println(ToStringBuilder.reflectionToString(next, ToStringStyle.SHORT_PREFIX_STYLE));            }        }    }}

打印结果：

BatchGetDeviceStateResponse[requestId=3346E749-1B19-4F5D-88AF-C73692F14214,success=true,errorMessage=<null>,deviceStatusList=[com.aliyuncs.iot.model.v20170420.BatchGetDeviceStateResponse$DeviceStatus@7486a1f7, com.aliyuncs.iot.model.v20170420.BatchGetDeviceStateResponse$DeviceStatus@32f39ae5, com.aliyuncs.iot.model.v20170420.BatchGetDeviceStateResponse$DeviceStatus@173e4a85]]BatchGetDeviceStateResponse.DeviceStatus[deviceId=******,deviceName=test_a,status=UNACTIVE,asAddress=<null>,lastOnlineTime=]BatchGetDeviceStateResponse.DeviceStatus[deviceId=******,deviceName=test_b,status=UNACTIVE,asAddress=<null>,lastOnlineTime=]BatchGetDeviceStateResponse.DeviceStatus[deviceId=******,deviceName=test_c,status=UNACTIVE,asAddress=<null>,lastOnlineTime=]

查询设备还是通过设备名称，这边批量查询就通过列表的方式，类似于批量申请设备的操作。
返回的设备状态对象DeviceStatus，关键属性有status设备状态（ONLINE 在线, OFFLINE 离线, UNACTIVE 未激活）。