Rails回形针错误` `AWS::S3::Errors::BadRequest`出现在` `exists?`和`clear`上

Question

全。

我已经做好了所有的工作:图片正在上传，可以通过回形针和S3通过网络访问，除了当我登录rails c并输入以下内容时：

> User.first.avatar.exists?
[AWS S3 400 0.093287 0 retries] head_object(:bucket_name=>"mozg-staging-static",:key=>"users/avatars/000/000/001/original/289736.jpg") AWS::S3::Errors::BadRequest AWS::S3::Errors::BadRequest

=> false

clear方法也是如此。还没有找到解决方案。

我有这样的权限策略：

    {
            "Sid": "Stmt1436958517000",
            "Effect": "Allow",
            "Action": [
                "s3:AbortMultipartUpload",
                "s3:DeleteObject",
                "s3:DeleteObjectVersion",
                "s3:GetBucketAcl",
                "s3:GetBucketCORS",
                "s3:GetObject",
                "s3:GetObjectAcl",
                "s3:GetObjectVersion",
                "s3:GetObjectVersionAcl",
                "s3:ListBucket",
                "s3:ListBucketMultipartUploads",
                "s3:ListBucketVersions",
                "s3:ListMultipartUploadParts",
                "s3:ListObjects",
                "s3:PutObject",
                "s3:PutObjectAcl",
                "s3:PutObjectVersionAcl",
                "s3:RestoreObject"
            ],
            "Resource": [
                "arn:aws:s3:::mozg-staging-static",
                "arn:aws:s3:::mozg-staging-static/*"
            ]
        }

感谢您的支持。

Answer 1

这可能是您的策略的问题，您可以尝试：

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

ListBucket操作需要在存储桶级别进行设置，而PutObject、GetObject和DeleteObject则需要针对存储桶中的对象进行设置。为了使答案简短，我省略了其他操作。当然，如果需要的话，您需要重新添加它们。您可以在以下位置找到操作列表以及它们是存储桶操作还是对象操作：http://docs.aws.amazon.com/AmazonS3/latest/dev/using-with-s3-actions.html