使用亚马逊S3在node.js应用程序中处理文件上传和存储

npm install aws-sdk

const AWS = require('aws-sdk');
AWS.config.update({
  accessKeyId: 'YOUR_ACCESS_KEY',
  secretAccessKey: 'YOUR_SECRET_KEY'
});

const s3 = new AWS.S3({ region: 'YOUR_REGION' });

const fs = require('fs');

const uploadParams = {
  Bucket: 'YOUR_BUCKET_NAME',
  Key: 'YOUR_FILE_NAME',
  Body: fs.createReadStream('PATH_TO_LOCAL_FILE')
};

s3.upload(uploadParams, function(err, data) {
  if (err) {
    console.error('Error uploading file:', err);
  } else {
    console.log('File uploaded successfully. File location:', data.Location);
  }
});

const downloadParams = {
  Bucket: 'YOUR_BUCKET_NAME',
  Key: 'YOUR_FILE_NAME'
};

s3.getObject(downloadParams, function(err, data) {
  if (err) {
    console.error('Error downloading file:', err);
  } else {
    // 处理下载的文件数据
  }
});