Web Uploader 的使用总结

前置条件

官方下载地址：
http://fex.baidu.com/webuploader/getting-started.html

//上传控件
    var order = 0;
    var uploader = WebUploader.create({
        // swf文件路径
        swf: "/web/source/js/upload/Uploader.swf",
        // 文件接收服务端。
        server: '/web/attach/upload',
        // 选择文件的按钮。可选。
        // 内部根据当前运行是创建，可能是input元素，也可能是flash.
        pick: {
            id: '#picker',
            multiple: false
        },
        // 不压缩image, 默认如果是jpeg，文件上传前会压缩一把再上传！
        resize: false,
        // 只允许选择图片文件。
        accept: {
            title: 'Images',
            extensions: 'gif,jpg,jpeg,bmp,png',
            mimeTypes: 'image/*'
        }
    });
    //当文件被加入队列之前触发
    uploader.on('beforeFileQueued', function (file) {
        //清空上传队列
        uploader.reset();
    });
    // 当有文件被添加进队列的时候
    uploader.on('fileQueued', function (file) {
        $("#thelist").html('<div id="' + file.id + '" class="item">' +
            '<img/>' +
            '<p class="state">等待上传...</p>' +
            '</div>');
        var $img = $("#thelist").find('img');
        // 创建缩略图
        // 如果为非图片文件，可以不用调用此方法。
        // thumbnailWidth x thumbnailHeight 为 100 x 100
        uploader.makeThumb(file, function (error, src) {
            if (error) {
                $img.replaceWith('<span>不能预览</span>');
                return;
            }

            $img.attr('src', src);
        }, 50, 50);
    });
    uploader.on('setOrderNoSeed', function (seed) {
        order = seed;
        return true;
    });
    // 文件上传过程中创建进度条实时显示。
    uploader.on('uploadProgress', function (file, percentage) {
        var $li = $('#' + file.id),
            $percent = $li.find('.progress .progress-bar');
        // 避免重复创建
        if (!$percent.length) {
            $percent = $('<div class="progress progress-striped active">' +
                '<div class="progress-bar" role="progressbar" style="width: 0%">' +
                '</div>' +
                '</div>').appendTo($li).find('.progress-bar');
        }
        $li.find('p.state').text('上传中');
        $percent.css('width', percentage * 100 + '%');
    });
    uploader.on('uploadSuccess', function (file, result) {
        try {
            viewModel.formData.set("iconUrl", result.fullName);
            $('#' + file.id).find('p.state').html('<span style="color: green">上传成功</span>');
        } catch (e) {
            $('#' + file.id).find('p.state').html('<span style="color: red">上传出错</span>');
        }
    });

    uploader.on('uploadError', function (file) {
        $('#' + file.id).find('p.state').html('<span style="color: red">上传出错</span>');
    });
    uploader.on('uploadBeforeSend', function (object, data, headers) {
        data.chunk = object.chunk;
        data.chunks = object.chunks;
        data.guid = object.file.name + object.file.size;
        data.flowInstId = this.options.flowInstId;
        data.formId = this.options.formId;
        data.stepInstId = this.options.stepInstId;
        data.projectId = this.options.projectId;
        data.catalog = this.options.catalog;
        data.storekind = this.options.storekind;
        data.orderNo = order++;
        data.referenceId = this.options.referenceId;
        data.rewriteAttachId = this.options.rewriteAttachId;
        data.uuid = object.file.uuid;
        data.start = object.start;
        data.end = object.end;
        data.dir = this.options.dir;
        data.comments = this.options.comments;
        if (this.uploadBeforeSend) {
            this.uploadBeforeSend(object, data, headers);
        }
        return true;
    });
    uploader.on('uploadComplete', function (file) {
        console.log("uploadComplete");
    });

绑定页面控件事件

		$("#uploadBtn").bind("click", function () {
            uploader.upload();
        });
        $("#removeIcon").bind("click", function () {
            uploader.reset();
        });