如何使用Node.js在谷歌云存储中更改文件的元数据

npm install @google-cloud/storage

const { Storage } = require('@google-cloud/storage');

const storage = new Storage({
  projectId: 'your-project-id',
  keyFilename: 'path/to/your/keyfile.json',
});

const bucketName = 'your-bucket-name';
const fileName = 'your-file-name';

const bucket = storage.bucket(bucketName);
const file = bucket.file(fileName);

const metadata = {
  contentType: 'image/jpeg',
  metadata: {
    customKey: 'customValue',
  },
};

file.setMetadata(metadata)
  .then(() => {
    console.log('File metadata updated successfully.');
  })
  .catch((err) => {
    console.error('Error updating file metadata:', err);
  });