Node.js AWS ListObjectsV2作为图像名称数组

Question

我试图将listObjectsV2作为数组返回，而我尝试过的所有解决方案都返回了promise。

似乎listObjectsV2在实际呈现页面之前未及时完成。

aws-sdk S3: best way to list all keys with listObjectsV2

const s3 = require('../controllers/aws');

*/
exports.index = (req, res) => {
    var user_obj = [];
    User.findById(res.locals.user._id, function (err, user) {
        if (err) {} else {
            User.find({
                '_id': {
                    $in: user.baseball_team
                }
            }).limit(10).exec(function (err, docs) {
                if (docs) {
                    for (var i = 0; i < docs.length; i++) {
                        var params = {
                            Bucket: 'handover-little-league18',
                            Prefix: 'uploads/profile_images/' + docs[i]._id // Can be your folder name
                        };
                        var list = [];
                        s3.listObjectsV2(params, function (err, data) {
                            if (err) {
                                logger.error('Profile : s3 failed listing', err.stack);
                            } else {
                                data.Contents.forEach(item => {
                                    url = item.Key;
                                    if (url.substring(url.lastIndexOf('/') + 1) != '') {
                                        list.push(url.substring(url.lastIndexOf('/') + 1));
                                    }
                                });
                            }
                        });
                        obj = {
                            'name': docs[i].profile.name,
                            'id': docs[i]._id,
                            'images' : list
                        }
                        user_obj.push(obj);
                    }
                }
            });
            res.render('team', {
                title: 'Team',
                team: user_obj,
            });
        }
    });
}