java - describeLoadBalancers没有显示经典的负载均衡器

我正在尝试使用AWS Java API获取负载均衡器列表。

    AmazonElasticLoadBalancing elbClient = AmazonElasticLoadBalancingClient
            .builder()
            .withCredentials(new DefaultAWSCredentialsProviderChain())
            .withRegion(Regions.EU_WEST_1)
            .build();
    DescribeLoadBalancersResult result = elbClient.describeLoadBalancers(
            new DescribeLoadBalancersRequest());
    for (LoadBalancer lb : result.getLoadBalancers()) {
        System.out.println(lb.getLoadBalancerName());
    }

该调用有效，但是仅列出了新的应用程序负载平衡器。我看不到任何经典的负载均衡器。我的凭据不受限制。

如何获得经典的负载均衡器？

最佳答案

看来有两个用于Elastic Load Balancing的API。 AmazonElasticLoadBalancingClient的javadoc提供了一个提示：


  本参考资料涵盖2015-12-01 API，该API支持应用程序负载平衡器。 2012-06-01 API支持经典负载平衡器。


对于以下代码，注释掉的代码不会打印出经典的负载均衡器，但是注释掉的代码将：

/*
import com.amazonaws.services.elasticloadbalancingv2.AmazonElasticLoadBalancing;
import com.amazonaws.services.elasticloadbalancingv2.AmazonElasticLoadBalancingClientBuilder;
import com.amazonaws.services.elasticloadbalancingv2.model.DescribeLoadBalancersRequest;
import com.amazonaws.services.elasticloadbalancingv2.model.DescribeLoadBalancersResult;
*/
import com.amazonaws.services.elasticloadbalancing.AmazonElasticLoadBalancing;
import com.amazonaws.services.elasticloadbalancing.AmazonElasticLoadBalancingClientBuilder;
import com.amazonaws.services.elasticloadbalancing.model.DescribeLoadBalancersRequest;
import com.amazonaws.services.elasticloadbalancing.model.DescribeLoadBalancersResult;
import org.junit.Test;

public class AwsTestIT
{
    /*
    @Test
    public void testGetLoadBalancers()
    {
        AmazonElasticLoadBalancing amazonElasticLoadBalancingClient = AmazonElasticLoadBalancingClientBuilder
            .defaultClient();
        DescribeLoadBalancersResult result =
            amazonElasticLoadBalancingClient.describeLoadBalancers(new DescribeLoadBalancersRequest());
        result.getLoadBalancers().stream().forEach(loadBalancer -> System.out
            .println("loadBalancer = " + loadBalancer));
    }
    */

    @Test
    public void testGetLoadBalancers()
    {
        AmazonElasticLoadBalancing amazonElasticLoadBalancingClient = AmazonElasticLoadBalancingClientBuilder
            .defaultClient();
        DescribeLoadBalancersResult result =
            amazonElasticLoadBalancingClient.describeLoadBalancers(new DescribeLoadBalancersRequest());
        result.getLoadBalancerDescriptions().stream().forEach(loadBalancer -> System.out
            .println("loadBalancer = " + loadBalancer));
    }
}

关于java - describeLoadBalancers没有显示经典的负载均衡器，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/45718859/