我尝试了以下方法:

aws s3 ls s3.console.aws.amazon.com/s3/buckets/{bucket name}

这给了我一个错误:

An error occurred (AccessDenied) when calling the ListObjectsV2 operation: Access Denied

使用这种形式是有效的:

aws s3 ls {bucket name}

我认为错误是由于“s3:ListObjects”操作，但我不得不添加操作“s3:ListBucket”来解决“AccessDenied for ListObjects for s3 bucket”的问题

您已经授予了对S3桶内的对象执行命令的权限，但没有授予对桶本身执行任何操作的权限。

稍微修改一下你的策略会是这样的:

{
  "Version": "version_id",
  "Statement": [
    {
        "Sid": "some_id",
        "Effect": "Allow",
        "Action": [
            "s3:*"
        ],
        "Resource": [
            "arn:aws:s3:::bucketname",
            "arn:aws:s3:::bucketname/*"
        ]
    }
  ] 
}

然而，这可能会给予超出所需的许可。遵循AWS IAM授予最小特权的最佳实践将看起来像这样:

{
  "Version": "2012-10-17",
  "Statement": [
      {
          "Effect": "Allow",
          "Action": [
              "s3:ListBucket"
          ],
          "Resource": [
              "arn:aws:s3:::bucketname"
          ]
      },
      {
          "Effect": "Allow",
          "Action": [
              "s3:GetObject"
          ],
          "Resource": [
              "arn:aws:s3:::bucketname/*"
          ]
      }
  ]
}

遇到了类似的问题，对我来说，问题是我在bash_profile中设置了不同的AWS密钥。

我在这里回答了一个类似的问题:https://stackoverflow.com/a/57317494/11871462

如果bash_profile中有冲突的AWS密钥，AWS CLI会默认使用这些密钥。

比起之前的答案，我更喜欢这个。它展示了如何使用YAML格式，并允许您使用一个变量来指定bucket。

    - PolicyName: "AllowIncomingBucket"
      PolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: "Allow"
            Action: "s3:*"
            Resource:
              - !Ref S3BucketArn
              - !Join ["/", [!Ref S3BucketArn, '*']]

这是一个对我有用的策略。

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": "*",
      "Action": [
        "s3:ListBucket"
      ],
      "Resource": [
        "arn:aws:s3:::bucket-name"
      ]
    },
    {
      "Effect": "Allow",
      "Principal": "*",
      "Action": [
        "s3:GetObject"
      ],
      "Resource": [
        "arn:aws:s3:::bucket-name/*"
      ]
    }
  ]
}