<dependency>
            <groupId>com.aliyun</groupId>
            <artifactId>tea-openapi</artifactId>
            <version>0.0.11</version>
        </dependency>
        <dependency>
            <groupId>com.aliyun</groupId>
            <artifactId>iot20180120</artifactId>
            <version>1.1.0</version>
        </dependency>
        <!--以下依赖为非必须项，只为下文示例代码中JSON序列化输出结果使用-->
        <dependency>    
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
             <version>1.2.61</version>
        </dependency>

import com.alibaba.fastjson.JSON;
import com.aliyun.iot20180120.Client;
import com.aliyun.iot20180120.models.*;
import com.aliyun.teaopenapi.models.Config;
public class JavaDemo {
    /**
     * 使用AccessKey ID和AccessKey Secret初始化账号Client
     * @param accessKeyId
     * @param accessKeySecret
     * @return Client
     * @throws Exception
     */
    public static Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        Config config = new Config();
        config.setAccessKeyId(accessKeyId);
        config.setAccessKeySecret(accessKeySecret);
        // 您的接入域名
        config.setEndpoint("iot.cn-shanghai.aliyuncs.com");
        return new Client(config);
    }
    public static void main(String[] args_) throws Exception {
        // 您的AccessKey ID和AccessKey Secret
        Client client = JavaDemo.createClient("LTAI4FyDFmKN************", "WF3onkl8cq3cTyVW8n************"));
        ListAnalyticsDataRequest request = new ListAnalyticsDataRequest();
        // 您的API Path
        request.setApiPath("/iot-cn-npk1v******/system/query/hist_dev_cnt_stat");
        // 您的API所在实例ID
        request.setIotInstanceId("iot-cn-npk1v******");
        //分页参数：页号
        request.setPageNum(1);
        //分页参数：页大小
        request.setPageSize(100);
        List<ListAnalyticsDataRequest.ListAnalyticsDataRequestCondition> conditions = new ArrayList<>();
        //您的业务相关的请求参数。Condition的配置说明，请参见下文的相关说明。
        ListAnalyticsDataRequest.ListAnalyticsDataRequestCondition condition = new ListAnalyticsDataRequest
                .ListAnalyticsDataRequestCondition();
        condition.setFieldName("__instance_id__");
        condition.setOperate("=");
        condition.setValue("iot-public");
        conditions.add(condition);
        ListAnalyticsDataRequest.ListAnalyticsDataRequestCondition condition1 = new ListAnalyticsDataRequest
                .ListAnalyticsDataRequestCondition();
        condition1.setFieldName("entityId");
        condition1.setOperate("=");
        condition1.setValue("all");
        conditions.add(condition1);
        ListAnalyticsDataRequest.ListAnalyticsDataRequestCondition condition2 = new ListAnalyticsDataRequest
                .ListAnalyticsDataRequestCondition();
        condition2.setFieldName("statDate");
        condition2.setOperate("=");
        condition2.setValue("20210221");
        conditions.add(condition2);
        request.setCondition(conditions);
        ListAnalyticsDataResponse listAnalyticsDataResponse = client.listAnalyticsData(request);
        System.out.println(JSON.toJSONString(listAnalyticsDataResponse));    
  }
}