:SDK de Alibaba Cloud

<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>ecs20140526</artifactId>
  <version>5.1.0</version>
</dependency>

// This file is auto-generated, don't edit it. Thanks.
package com.aliyun.sample;

import com.aliyun.tea.*;

public class Sample {

    /**
     * Use your AccessKey ID and AccessKey secret to initialize the client.
     * @param accessKeyId
     * @param accessKeySecret
     * @return Client
     * @throws Exception
     */
    public static com.aliyun.ecs20140526.Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                // Required. Specify your AccessKey ID.
                .setAccessKeyId(accessKeyId)
                // Required. Specify your AccessKey secret.
                .setAccessKeySecret(accessKeySecret);
        // Specify the endpoint.
        config.endpoint = "ecs-cn-hangzhou.aliyuncs.com";
        return new com.aliyun.ecs20140526.Client(config);
    }

    public static void main(String[] args_) throws Exception {
        java.util.List<String> args = java.util.Arrays.asList(args_);
        // Make sure that the ALIBABA_CLOUD_ACCESS_KEY_ID and ALIBABA_CLOUD_ACCESS_KEY_SECRET environment variables are configured. 
        // If the project code is leaked, the AccessKey pair may be disclosed, which compromises the security of resources in your account. The following sample code obtains the AccessKey pair from environment variables. This example is for reference only. We recommend that you use Security Token Service (STS) to initialize SDK clients, which is more secure. For more information about authentication solutions, see the "Manage access credentials" topic for Alibaba Cloud SDK for Java.
        com.aliyun.ecs20140526.Client client = Sample.createClient(System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
        com.aliyun.ecs20140526.models.RunInstancesRequest runInstancesRequest = new com.aliyun.ecs20140526.models.RunInstancesRequest();
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        try {
            // If you copy and run the sample code, write your own code to display the response of the API operation.
            client.runInstancesWithOptions(runInstancesRequest, runtime);
        } catch (TeaException error) {
            // Display the error based on your business requirements.
            com.aliyun.teautil.Common.assertAsString(error.message);
        } catch (Exception _error) {
            TeaException error = new TeaException(_error.getMessage(), _error);
            // Display the error based on your business requirements.
            com.aliyun.teautil.Common.assertAsString(error.message);
        }        
    }
}

<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>aliyun-java-sdk-core</artifactId>
  <version>4.6.1</version>
</dependency>
<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>aliyun-java-sdk-ecs</artifactId>
  <version>5.11.5</version>
</dependency>

import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.profile.DefaultProfile;
import java.util.*;
import com.aliyuncs.ecs.model.v20140526.*;

public class DescribeInstances {

    public static void main(String[] args) {
        // Create and initialize a DefaultAcsClient instance. 
        DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou", System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
        IAcsClient client = new DefaultAcsClient(profile);

        // Create an API request and configure the required parameters. 
        DescribeInstancesRequest request = new DescribeInstancesRequest();
        request.setRegionId("cn-hangzhou");
        request.setInstanceNetworkType("vpc");
        request.setInstanceChargeType("PostPaid");
        request.setInternetChargeType("PayByTraffic");
        request.setPageSize(10);

        try {
        // Initiate the request and handle the response or exception. 
            DescribeInstancesResponse response = client.getAcsResponse(request);
        for (DescribeInstancesResponse.Instance instance:response.getInstances()) 
            {
                 System.out.println(instance.getImageId());
                 System.out.println(instance.getInstanceId());
                 System.out.println(instance.getPublicIpAddress());
             }
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            System.out.println("ErrCode:" + e.getErrCode());
            System.out.println("ErrMsg:" + e.getErrMsg());
            System.out.println("RequestId:" + e.getRequestId());
        }

    }
}