通过 AWS Lambda 访问 Amazon S3

const aws = require('aws-sdk');

const s3 = new aws.S3({ apiVersion: '2006-03-01' });

exports.handler = async (event) => {
    const {path1, path2, filename, suffix} = /\/(?<path1>.{4}).*\/(?<path2>\d{4}).*\/(?<filename>\d{22}).*(?<suffix>\..{3})/.exec(event.rawPath).groups
    const params = {
        Bucket: 'myproductpic',
        Key: path1 + '/' + path2 + '/' + filename + suffix
    };
    const data = await s3.getObject(params).promise();
    console.log(data)
    return {
        statusCode: 200,
        headers: {
            'Accept-Ranges': data.AcceptRanges,
            'Content-Length': data.ContentLength,
            'Content-Type': data.ContentType,
            'ETag': data.ETag,
            'Last-Modified': data.LastModified
        },
        isBase64Encoded: 'true',
        body: data.Body.toString('base64')
    }
};