The following code is used to upload to the bucket using a pre-signed POST form. When adding the object putObject-from-PreSignedUrl-test to node-sdk-test-bucket, the corresponding POST form signature data is generated.

import { TosClient, TosClientError, TosServerError } from '@volcengine/tos-sdk';​
const client = new TosClient({​
  accessKeyId: process.env['TOS_ACCESS_KEY'], ​
  accessKeySecret: process.env['TOS_SECRET_KEY'], ​
  region: "Provide your region", ​
  endpoint: "Provide your endpoint", ​
});​
​
function handleError(error) {​
  if (error instanceof TosClientError) {​
    console.log('Client Err Msg:', error.message);​
    console.log('Client Err Stack:', error.stack);​
  } else if (error instanceof TosServerError) {​
    console.log('Request ID:', error.requestId);​
    console.log('Response Status Code:', error.statusCode);​
    console.log('Response Header:', error.headers);​
    console.log('Response Err Code:', error.code);​
    console.log('Response Err Msg:', error.message);​
  } else {​
    console.log('unexpected exception, message: ', error);​
  }​
}​
​
async function main() {​
  try {​
    const bucketName = 'node-sdk-test-bucket';​
    const objectName = 'putObject-from-PreSignedUrl-test';​
    ​
    const res = await client.preSignedPostSignature({​
      bucket: bucketName,​
      key: objectName,​
      expiresIn: 3600,​
    });​
    console.log('preSignedPostSignature:', res);​
  } catch (error) {​
    handleError(error);​
  }​
}​
​
main();​