Question

我正在尝试使用ng-file-upload模块将文件上传到S3。我收到了一个错误：

根据政策无效：政策条件失败：[“eq”， “$ succes_action_status”，“201”]

我的代码基于此particular example，略有变化：

api.js：

exports.signing = function(req, res) {

var request = req.body;
var fileName = request.filename;
var path = fileName;

var readType = "public-read";

var expiration = moment().add(5, 'm').toDate();

var s3Url = process.env.S3_URL;

var s3Policy = {
    'expiration': expiration,
    'conditions': [{
        'bucket' : process.env.S3_BUCKET,
    },
    ['starts-with', '$key', path],
    {
        'acl': readType
    },
    {
        'succes_action_status': '201'
    },
    ['starts-with', '$Content-Type', request.type],
    ['content-length-range', 2048, 10485760],
    ]
};

var stringPolicy = JSON.stringify(s3Policy);
var base64Policy = new Buffer(stringPolicy, 'utf-8').toString('base64');

//sign policy
var signature = crypto.createHmac('sha1', process.env.AWS_SECRET_KEY).update(new Buffer(base64Policy, 'utf-8')).digest('base64');

var credentials = {
    url: s3Url,
    fields: {
        key: fileName,
        AWSAccessKeyId: process.env.AWS_ACCESS_KEY,
        acl: readType,
        policy: base64Policy,
        signature: signature,
        'Content-Type': request.type,
        success_action_status: '201'
    }
};

res.jsonp(credentials);
};

controller.js

$scope.upload = function(files) {
    if (files.length > 0) {
        var filename = files[0].name;
        var type = files[0].type;
        var query = {
            filename: filename,
            type: type
        }
    };

    if (files && files.length) {
        for (var i=0; i < files.length; i++) {
            var file = files[i];
            photoService.signingS3(query).success(function(result) {
                Upload.upload({
                url: "https://***.s3.amazonaws.com",
                method: "POST",
                fields: result.fields,
                transformRequest: function (data, headersGetter) {
                        //Headers change here
                        var headers = headersGetter();
                        delete headers['Authorization'];
                        return data;
                },
                file: file
            }).progress(function(evt) {
                console.log('progress: ' + parseInt(100.0 * evt.loaded / evt.total));
            }).success(function (data, status, headers, config) {
                console.log('file ' + config.file.name + 'is uploaded successfully. Response: ' + data);
                }).error(function(err) {
                    console.log(err);
                });
            }).error(function(data, status, headers, config) {
                console.log(data);
            });
            }

        }
    }

你能告诉我它有什么问题吗？

Answer 1

此处['starts-with', '$key', path]路径的值必须是：＆＃39; s3＆＃39;中的某个目录+ fileName; 。此外，检查您的桶名称是否相应填写。

AngularJS S3文件上传 - 策略条件失败

1 个答案: