S3 Bucket

Amudha — Fri, 15 Dec 2023 15:07:23 GMT

Hi I am using the below code in Qliksense mash for access qliksense mashup getting below error while reloading the app

has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

<!DOCTYPE html>

<head>

<title>S3 File Downloader</title>

</head>

<body>

<label for="file-list">Select File to Download:</label>

<button onclick="downloadS3File()">Download S3 File</button>

function myFunction() {

// Initialize AWS SDK

AWS.config.update({

accessKeyId: 'Key',

secretAccessKey: '',

region: ''

});

const s3 = new AWS.S3();

// Fetch file list from S3 and populate dropdown

s3.listObjectsV2({ Bucket: 'Bucketname' }, (err, data) => {

if (err) {

console.error(err);

} else {

const fileList = document.getElementById('file-list');

data.Contents.forEach(file => {

const option = document.createElement('option');

option.value = file.Key;

option.textContent = file.Key;

fileList.appendChild(option);

});

}

});

// Function to download S3 file dynamically

function downloadS3File() {

const selectedFile = document.getElementById('file-list').value;

if (!selectedFile) {

console.error('Please select a file to download.');

return;

}

const params = {

Bucket: 'Bucket-Name',

Key: selectedFile

};

s3.getObject(params, (err, data) => {

if (err) {

console.error(err);

} else {

const blob = new Blob([data.Body], { type: data.ContentType });

const link = document.createElement('a');

link.href = URL.createObjectURL(blob);

link.download = ${selectedFile.split('/').pop()}.xlsx; // Adjust the downloaded file name

document.body.appendChild(link);

link.click();

document.body.removeChild(link);

}

});

console.log();

}

</script>

</body>

</html>

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S3 Bucket

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