Performing a Binary Download

Updated on 2024-04-26 GMT+08:00

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NOTICE:

If you have any questions during development, post them on the Issues page of GitHub. For details about parameters and usage of each API, see the API Reference.

Sample code:

// Create an instance of ObsClient.
var obsClient = new ObsClient({
    // Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables AccessKeyID and SecretAccessKey.
    // The front-end code does not have the process environment variable, so you need to use a module bundler like webpack to define the process variable.
    // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/eu/usermanual-ca/ca_01_0003.html.
    access_key_id: process.env.AccessKeyID,
    secret_access_key: process.env.SecretAccessKey,
    // Replace the example endpoint with the actual one in your case.
    server: 'https://obs.eu-west-101.myhuaweicloud.eu'
});
 
obsClient.getObject({ 
       Bucket : 'bucketname', 
       Key : 'objectname', 
       SaveByType : 'arraybuffer' 
}, function (err, result) { 
       if(err){ 
              console.error('Error-->' + err); 
       }else{ 
              console.log('Status-->' + result.CommonMsg.Status); 
              if(result.CommonMsg.Status < 300 && result.InterfaceResult){ 
                     // Obtain the object length.
                     console.log('Object Length:\n'); 
                     console.log(result.InterfaceResult.Content.byteLength); 
              }
       } 
});

NOTE:

Set the SaveByType parameter to arraybuffer to use binary download.
In the returned result of a binary download, InterfaceResult.Content is an instance of ArrayBuffer.

Parent topic: Object Download

Previous topic: Performing a Text-Based Download

Next topic: Performing a File-Based Download

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