本示例介绍如何使用Alibaba Cloud SDK for Java调用DescribeInstanceStatus接口获取实例状态。

前提条件

在使用本教程之前,请确保已完成以下操作:
  • 使用Alibaba Cloud SDK for Java,您需要一个阿里云账号和访问密钥(AccessKey)。 请在阿里云控制台中的AccessKey管理页面
  • 确保您已经安装了Alibaba Cloud SDK for Java,准确的SDK版本号,请参见 阿里云开发工具包(SDK)
    <dependencies>
        <!-- https://mvnrepository.com/artifact/com.aliyun/aliyun-java-sdk-core -->
        <dependency>
            <groupId>com.aliyun</groupId>
            <artifactId>aliyun-java-sdk-core</artifactId>
            <version>4.4.3</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.aliyun/aliyun-java-sdk-ecs-->
        <dependency>
            <groupId>com.aliyun</groupId>
            <artifactId>aliyun-java-sdk-ecs</artifactId>
            <version>4.17.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.61</version>
        </dependency>
    </dependencies>

示例代码

本文操作示例主要以代码形式体现,具体代码如下:
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.ecs.model.v20140526.DescribeInstanceStatusRequest;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.http.FormatType;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;
import com.alibaba.fastjson.JSON;

public class ECSOperate {

    private static final String ACCESS_KEY = "<your-access-key>";
    private static final String ACCESS_SECRET = "<your-access-key_Secret>";
    private static final String REGION_ID = "<your-region-Id>";
    private static IAcsClient client = null;

    static {
        //创建profile
        IClientProfile profile = DefaultProfile.getProfile(REGION_ID, ACCESS_KEY, ACCESS_SECRET);
        //创建client
        client = new DefaultAcsClient(profile);
    }

    public static String describeInstanceStatus(FormatType formatType) {
    // 构造请求
    DescribeInstanceStatusRequest request = new DescribeInstanceStatusRequest();
        request.setAcceptFormat(formatType);
    try {
        // 获取返回对象
         return JSON.toJSONString(client.getAcsResponse(request));
    } catch (ServerException e) {
        System.out.println("服务器异常:" + e);
        e.printStackTrace();
        return null;
    } catch (ClientException e) {
        System.out.println("参数配置错误:" + e);
        e.printStackTrace();
        return null;
    }
}

    public static void main(String[] args) {
        System.out.println(describeInstanceStatus(FormatType.JSON));
    }
}