Check if a bucket exists (Node.js SDK)-Object Storage Service(OSS)-阿里云帮助中心

OSS does not provide a dedicated method to check bucket existence. Instead, call getBucketInfo and inspect the error: if the error name is NoSuchBucketError, the bucket does not exist. A successful response means the bucket exists.

Prerequisites

Before you run the sample code, ensure that you have:

Installed the ali-oss Node.js SDK
Set the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables

Sample code

The following code checks whether a specified bucket exists.

const OSS = require('ali-oss')
const client = new OSS({
  // Set region to the region where your bucket is located. For example, if your bucket is in the China (Hangzhou) region, set region to oss-cn-hangzhou.
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before running this code, ensure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are set.
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Set yourBucketName to the name of your bucket.
  bucket: 'yourBucketName',
});

async function bucketIsExist() {
  try {
    // Specify the bucket name.
    const result = await client.getBucketInfo('Yourbucketname')
    console.log('bucketInfo: ', result.bucket)
  } catch (error) {
    // Check if the specified bucket exists.
    if (error.name === 'NoSuchBucketError') {
      console.log('Bucket does not exist');
    } else {
      console.log(error)
    }
  }
}
bucketIsExist()