src/base.js
function putBucketTagging(params, callback) {

    var Tagging = params['Tagging'] || {};
    var Tags = Tagging.TagSet || Tagging.Tags || params['Tags'] || [];
    Tags = util.clone(util.isArray(Tags) ? Tags : [Tags]);
    var xml = util.json2xml({Tagging: {TagSet: {Tag: Tags}}});

    var headers = params.Headers;
    headers['Content-Type'] = 'application/xml';
    headers['Content-MD5'] = util.binaryBase64(util.md5(xml));

    submitRequest.call(this, {
        Action: 'name/cos:PutBucketTagging',
        method: 'PUT',
        Bucket: params.Bucket,
        Region: params.Region,
        body: xml,
        action: 'tagging',
        headers: headers,
    }, function (err, data) {
        if (err && err.statusCode === 204) {
            return callback(null, {statusCode: err.statusCode});
        } else if (err) {
            return callback(err);
        }
        callback(null, {
            statusCode: data.statusCode,
            headers: data.headers,
        });
    });
}
function putBucketTagging(params, callback) {

    var Tagging = params['Tagging'] || {};
    var Tags = Tagging.TagSet || Tagging.Tags || params['Tags'] || [];
    Tags = util.clone(util.isArray(Tags) ? Tags : [Tags]);
    var xml = util.json2xml({Tagging: {TagSet: {Tag: Tags}}});

    var headers = params.Headers;
    headers['Content-Type'] = 'application/xml';
    headers['Content-MD5'] = util.binaryBase64(util.md5(xml));

    submitRequest.call(this, {
        Action: 'name/cos:PutBucketTagging',
        method: 'PUT',
        Bucket: params.Bucket,
        Region: params.Region,
        body: xml,
        action: 'tagging',
        headers: headers,
    }, function (err, data) {
        if (err && err.statusCode === 204) {
            return callback(null, {statusCode: err.statusCode});
        } else if (err) {
            return callback(err);
        }
        callback(null, {
            statusCode: data.statusCode,
            headers: data.headers,
        });
    });
}
设置 Bucket 的标签
@param  {Object}  params             参数对象，必须
@param  {String}  params.Bucket  Bucket名称，必须
@param  {String}  params.Region  地域名称，必须
@param  {Array}   params.TagSet  标签设置，必须
@param  {Function}  callback         回调函数，必须
@return  {Object}  err               请求失败的错误，如果请求成功，则为空。https://cloud.tencent.com/document/product/436/7730
@return  {Object}  data              返回数据