var policyText = {
    "expiration": "2023-01-01T12:00:00.000Z", //设置该Policy的失效时间，超过这个失效时间之后，就没有办法通过这个policy上传文件了
    "conditions": [
        ["content-length-range", 0, 1048576000] // 设置上传文件的大小限制
    ]
};

accessid = 'LTAI4G4vE6yQ8YRztNZ65Wrf';
accesskey = 'OCyBu0ThZOgSHz2JLHyXOm7evWf0NA';
host = 'https://ytyss.oss-cn-beijing.aliyuncs.com';
dirname = 'abc/';


var policyBase64 = Base64.encode(JSON.stringify(policyText))
message = policyBase64
var bytes = Crypto.HMAC(Crypto.SHA1, message, accesskey, { asBytes: true });
var signature = Crypto.util.bytesToBase64(bytes);
var uploader = new plupload.Uploader({
    runtimes: 'html5,flash,silverlight,html4',
    browse_button: 'selectfiles',
    //runtimes : 'flash',
    container: document.getElementById('container'),
    flash_swf_url: 'lib/plupload-2.1.2/js/Moxie.swf',
    silverlight_xap_url: 'lib/plupload-2.1.2/js/Moxie.xap',

    url: host,

    multipart_params: {
        'Filename': '${filename}',
        'key': dirname + '${filename}',
        'policy': policyBase64,
        'OSSAccessKeyId': accessid,
        'success_action_status': '200', //让服务端返回200,不然，默认会返回204
        'signature': signature,
    },

    init: {
        PostInit: function() {
            document.getElementById('ossfile').innerHTML = '';
            document.getElementById('postfiles').onclick = function() {
                uploader.start();
                return false;
            };
        },

        FilesAdded: function(up, files) {
            plupload.each(files, function(file) {
                document.getElementById('ossfile').innerHTML += '<div id="' + file.id + '">' + file.name + ' (' + plupload.formatSize(file.size) + ')<b></b>' +
                    '<div class="progress"><div class="progress-bar" style="width: 0%"></div></div>' +
                    '</div>';
            });
        },

        UploadProgress: function(up, file) {
            var d = document.getElementById(file.id);
            d.getElementsByTagName('b')[0].innerHTML = '<span>' + file.percent + "%</span>";

            var prog = d.getElementsByTagName('div')[0];
            var progBar = prog.getElementsByTagName('div')[0]
            progBar.style.width = 2 * file.percent + 'px';
            progBar.setAttribute('aria-valuenow', file.percent);
        },

        FileUploaded: function(up, file, info) {
            //alert(info.status)
            if (info.status >= 200 || info.status < 200) {
                console.log(info)
            } else {
                document.getElementById(file.id).getElementsByTagName('b')[0].innerHTML = info.response;
            }
        },

        Error: function(up, err) {
            document.getElementById('console').appendChild(document.createTextNode("\nError xml:" + err.response));
        }
    }
});

uploader.init();