java - AWS 无法验证提供的访问凭证 (eclipse)

Question

我一直在使用 AWS SDK for Java 通过简单的 Java 程序启动亚马逊 EC2 实例。我已经在代码本身以及 windows>preferences>aws sdk 中提供了我的 secret 和访问 key 。我还将我的凭据添加到我正在使用的 key 中。而且我仍然收到此错误

Exception in thread "main" com.amazonaws.AmazonServiceException: AWS was not able to validate the provided access credentials (Service: AmazonEC2; Status Code: 401; Error Code: AuthFailure; Request ID: cc82e725-5a8a-44d8-9f7c-2031d6db1e1a)
at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1182)
at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:770)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310)
at com.amazonaws.services.ec2.AmazonEC2Client.invoke(AmazonEC2Client.java:11819)
at com.amazonaws.services.ec2.AmazonEC2Client.startInstances(AmazonEC2Client.java:6153)
at amazon.Amazon.main(Amazon.java:53)

这是我的 Java 代码

 package amazon;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.regions.Regions;
import com.amazonaws.regions.Region;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2Client;
import com.amazonaws.services.ec2.model.StartInstancesRequest;
import com.amazonaws.services.ec2.model.StartInstancesResult;

public class Amazon 
{
static AmazonEC2 ec2;

    static void authentication() throws Exception {
    AWSCredentials credentials=null;
 credentials = new BasicAWSCredentials("****","****");
 credentials=new ProfileCredentialsProvider().getCredentials();

    System.out.println("Credentials : " + credentials);
    ec2 = new AmazonEC2Client(credentials);
    Region region=Region.getRegion(Regions.AP_SOUTHEAST_1);
    ec2.setRegion(region);

}

  public static void main(String[] args) throws Exception
  {
      authentication(); 
        StartInstancesRequest startInstancesRequest = new StartInstancesRequest();

             startInstancesRequest.withInstanceIds("i-sba78aj1");

   StartInstancesResult res = ec2.startInstances(startInstancesRequest); 
              System.out.println(res.toString());
              return;
      }
}

谁能帮帮我？

Answer 1

我认为您的程序中存在一些困惑 - 当您这样做时:

AWSCredentials credentials=null;
credentials = new BasicAWSCredentials("****","****");
credentials = new ProfileCredentialsProvider().getCredentials();

行 credentials = new BasicAWSCredentials("****","****"); 最终不是必需的，因为凭证将被设置并替换为来自ProfileCredentialsProvider.

您不能同时使用 BasicAWSCredentials 和 ProfileCredentialsProvider

当您使用 ProfileCredentialsProvider 时，您需要在 ~/.aws/credentials 下有一个有效的凭证文件，该文件的格式应为

[default]
aws_access_key_id=XXXXX
aws_secret_access_key=XXXX

在这种情况下你会做

    AWSCredentials credentials = null;
    try {
        credentials = new ProfileCredentialsProvider().getCredentials();
    } catch (Exception e) {
        throw new AmazonClientException(
                "Cannot load the credentials from the credential profiles file. " +
                "Please make sure that your credentials file is at the correct " +
                "location (~/.aws/credentials), and is in valid format.",
                e);
    }
    AmazonEC2 ec2 = new AmazonEC2Client(credentials);

如果您不使用凭证文件，您可以像以前一样从 BasicAWSCredentials API 创建凭证:

AWSCredentials credentials = new BasicAWSCredentials("XXXXX", "XXXXX");
// no need to call the ProfileCredentialsProvider in this case
ec2 = new AmazonEC2Client(credentials);

只是一个简单的说明，我知道您可能会运行一个快速测试并使它从 main 方法运行，但实际上声明 static AmazonEC2 ec2; 是一个错误实际上，EC2Client 不应该是静态的。 (在简单的程序中它可能没问题，但随着您的基础设施不断增长(多个区域，实例......)，这是不可能的)