搭GetBucketCors配 AWS SDK或使用 CLI

下列程式碼範例會示範如何使用GetBucketCors。

.NET

AWS SDK for .NET

注意

還有更多關於 GitHub。尋找完整範例，並了解如何在AWS 設定和執行程式碼範例儲存庫。

        /// <summary>
        /// Retrieve the CORS configuration applied to the Amazon S3 bucket.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used
        /// to retrieve the CORS configuration.</param>
        /// <returns>The created CORS configuration object.</returns>
        private static async Task<CORSConfiguration> RetrieveCORSConfigurationAsync(AmazonS3Client client)
        {
            GetCORSConfigurationRequest request = new GetCORSConfigurationRequest()
            {
                BucketName = BucketName,
            };
            var response = await client.GetCORSConfigurationAsync(request);
            var configuration = response.Configuration;
            PrintCORSRules(configuration);
            return configuration;
        }

• 如需詳API細資訊，請參閱AWS SDK for .NET API參考GetBucketCors中的。

CLI

AWS CLI

下列命令會擷取名my-bucket為的值區的跨來源資源共用設定：

aws s3api get-bucket-cors --bucket my-bucket

輸出：

{
    "CORSRules": [
        {
            "AllowedHeaders": [
                "*"
            ],
            "ExposeHeaders": [
                "x-amz-server-side-encryption"
            ],
            "AllowedMethods": [
                "PUT",
                "POST",
                "DELETE"
            ],
            "MaxAgeSeconds": 3000,
            "AllowedOrigins": [
                "http://www.example.com"
            ]
        },
        {
            "AllowedHeaders": [
                "Authorization"
            ],
            "MaxAgeSeconds": 3000,
            "AllowedMethods": [
                "GET"
            ],
            "AllowedOrigins": [
                "*"
            ]
        }
    ]
}

• 如需詳API細資訊，請參閱AWS CLI 指令參考GetBucketCors中的。

JavaScript

SDK對於 JavaScript （3）

注意

還有更多關於 GitHub。尋找完整範例，並了解如何在AWS 設定和執行程式碼範例儲存庫。

取得值區的CORS政策。

import { GetBucketCorsCommand, S3Client } from "@aws-sdk/client-s3";

const client = new S3Client({});

export const main = async () => {
  const command = new GetBucketCorsCommand({
    Bucket: "test-bucket",
  });

  try {
    const { CORSRules } = await client.send(command);
    CORSRules.forEach((cr, i) => {
      console.log(
        `\nCORSRule ${i + 1}`,
        `\n${"-".repeat(10)}`,
        `\nAllowedHeaders: ${cr.AllowedHeaders.join(" ")}`,
        `\nAllowedMethods: ${cr.AllowedMethods.join(" ")}`,
        `\nAllowedOrigins: ${cr.AllowedOrigins.join(" ")}`,
        `\nExposeHeaders: ${cr.ExposeHeaders.join(" ")}`,
        `\nMaxAgeSeconds: ${cr.MaxAgeSeconds}`,
      );
    });
  } catch (err) {
    console.error(err);
  }
};

• 如需詳細資訊，請參閱《AWS SDK for JavaScript 開發人員指南》。

• 如需詳API細資訊，請參閱AWS SDK for JavaScript API參考GetBucketCors中的。

Python

SDK對於 Python（肉毒桿菌 3）

注意

還有更多關於 GitHub。尋找完整範例，並了解如何在AWS 設定和執行程式碼範例儲存庫。

class BucketWrapper:
    """Encapsulates S3 bucket actions."""

    def __init__(self, bucket):
        """
        :param bucket: A Boto3 Bucket resource. This is a high-level resource in Boto3
                       that wraps bucket actions in a class-like structure.
        """
        self.bucket = bucket
        self.name = bucket.name


    def get_cors(self):
        """
        Get the CORS rules for the bucket.

        :return The CORS rules for the specified bucket.
        """
        try:
            cors = self.bucket.Cors()
            logger.info(
                "Got CORS rules %s for bucket '%s'.", cors.cors_rules, self.bucket.name
            )
        except ClientError:
            logger.exception(("Couldn't get CORS for bucket %s.", self.bucket.name))
            raise
        else:
            return cors

• 如需詳API細資訊，請參閱GetBucketCors中AWS SDK的《Python (博多 3) API 參考資料》。

Ruby

SDK對於紅寶石

注意

還有更多關於 GitHub。尋找完整範例，並了解如何在AWS 設定和執行程式碼範例儲存庫。

require "aws-sdk-s3"

# Wraps Amazon S3 bucket CORS configuration.
class BucketCorsWrapper
  attr_reader :bucket_cors

  # @param bucket_cors [Aws::S3::BucketCors] A bucket CORS object configured with an existing bucket.
  def initialize(bucket_cors)
    @bucket_cors = bucket_cors
  end

  # Gets the CORS configuration of a bucket.
  #
  # @return [Aws::S3::Type::GetBucketCorsOutput, nil] The current CORS configuration for the bucket.
  def get_cors
    @bucket_cors.data
  rescue Aws::Errors::ServiceError => e
    puts "Couldn't get CORS configuration for #{@bucket_cors.bucket.name}. Here's why: #{e.message}"
    nil
  end

end

• 如需詳API細資訊，請參閱AWS SDK for Ruby API參考GetBucketCors中的。

如需 AWS SDK開發人員指南和程式碼範例的完整清單，請參閱搭配 AWS SDK 使用此服務。本主題也包含有關入門的資訊以及舊SDK版的詳細資訊。