Question

如何使用aws-sdk测试AWS S3上是否存在存储桶？

此问题用于测试存储桶中是否存在对象：How to determine if object exists AWS S3 Node.JS sdk

这个问题适用于Python：How can I check that a AWS S3 bucket exists?

Answer 1

您可以使用以下代码：

// import or require aws-sdk as AWS
// const AWS = require('aws-sdk');

const checkBucketExists = async bucket => { 
  const s3 = new AWS.S3();
  const options = {
    Bucket: bucket,
  };
  try {
    await s3.headBucket(options).promise();
    return true;
  } catch (error) {
    if (error.statusCode === 404) {
      return false;
    }
    throw error;
  }
};

重要的是要意识到如果存储桶不存在，错误statusCode将为404。

Answer 2

要测试存储桶是否存在，请从createBucket回调方法中检查statusCode属性。如果是409，则说明它是以前创建的。我希望这足够清楚吗？

const ID = ''//Your access key id
const SECRET = ''//Your AWS secret access key

const BUCKET_NAME = ''//Put your bucket name here

const s3 = new AWS.S3({
    accessKeyId: ID,
    secretAccessKey: SECRET
})

const params = {
    Bucket: BUCKET_NAME,
    CreateBucketConfiguration: {
        // Set your region here
        LocationConstraint: "eu-west-1"
    }
}
s3.createBucket(params, function(err, data) {
   if (err && err.statusCode == 409){
    console.log("Bucket has been created already");
   }else{
       console.log('Bucket Created Successfully', data.Location)
   }
})

如何测试AWS S3上是否存在存储桶

2 个答案: