swfupload 上传控件的配置

第一：下载swfupload控件，点击下载：

第二，解压缩后，在项目中添加这四个文件，如图：

然后，在你的js文件中添加这段代码：

/**
* *定义swfupload配置文件对象
**/
var swfObj = {
    // Backend Settings
    upload_url: "../../Handler/CourseHandler.ashx?action=SaveFile",
    //upload_url: "upload.aspx",
    // File Upload Settings
    file_size_limit: "10240",
    file_types: "*.ppt;*.doc;*.docx;*.xls;",
    file_types_description: "*.ppt;*.doc;*.docx;*.xls;",
    file_upload_limit: "0",    // Zero means unlimited
    // Event Handler Settings - these functions as defined in Handlers.js
    //  The handlers are not part of SWFUpload but are part of my website and control how
    //  my website reacts to the SWFUpload events.
    file_queue_error_handler: fileQueueError,
    file_dialog_complete_handler: fileDialogComplete,
    upload_progress_handler: uploadProgress,
    upload_error_handler: uploadError,
    upload_success_handler: uploadSuccess,
    upload_complete_handler: uploadComplete,
    // Button settings
    button_image_url: "../../Images/XPButtonNoText_160x22.png",
    button_placeholder_id: "spanButtonPlaceholder",
    button_width: 160,
    button_height: 22,
    button_text: '<span class="button">选择文件上传 <span class="buttonSmall">(最大 10Mb)</span></span>',
    button_text_style: '.button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt;} .buttonSmall { font-size: 10pt; }',
    button_text_top_padding: 1,
    button_text_left_padding: 5,
    // Flash Settings
    flash_url: "../../Scripts/swfupload/swfupload.swf", // Relative to this file
    custom_settings: {
        upload_target: "divFileProgressContainer"
    },
    // Debug Settings
    debug: false
};

最后，调用这个对象进行初始化：

var swfu = new SWFUpload(swfObj);

OK,现在可以上传文件了。

保存文件代码：

　　　　　/// <summary>
        /// 保存文件
        /// </summary>
        /// <param name="context"></param>
        public void SaveFile(HttpContext context)
        {
            ISession session = SessionFactory.GetCurrentSession();
            ResourcesService resourcesService = new ResourcesService(session);
            var id = context.Request.Params["id"];
            HttpPostedFile file = context.Request.Files["Filedata"];

            Resources resources = new Resources();
            if (file == null) return;
            var pathAll = _filepath + file.FileName;
            var filepath = "/CourseFile/" + file.FileName;
            var url = UrlHelper.Resolve(filepath);
            int size = file.ContentLength / ;
            var flag = file.ContentLength % ;
            if (flag > )
            {
                size++;
            }
            resources.FileSize = size.ToString(CultureInfo.InvariantCulture);
            resources.Name = file.FileName;
            resources.FileType = file.FileName.Split('.')[file.FileName.Split('.').Length - ];
            resources.FilePath = url;
            resources.CreateDt = DateTime.Now;
            resources.Course = new Model.Course()
                {
                    Id = id
                };
            if (File.Exists(pathAll))
            {
                resourcesService.DeleteByName(resources);
            }
            resources.Id = Guid.NewGuid().ToString();
            resourcesService.Save(resources);
            file.SaveAs(pathAll);
        }

注意，如果这个上传的进度条没有出来，你就要添加它的default.css了！

最后一个就是handler.js文件的配置了，添加和修改符合自己的web要求！

function fileQueueError(file, errorCode, message) {
    try {
        var imageName = "error.gif";
        var errorName = "";
        if (errorCode === SWFUpload.errorCode_QUEUE_LIMIT_EXCEEDED) {
            errorName = "您上传的文件太多.";
        }

        if (errorName !== "") {
            alert(errorName);
            return;
        }

        switch (errorCode) {
            case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
                //imageName = "zerobyte.gif";
                alert("文件不能为空");
                break;
            case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
                //imageName = "toobig.gif";
                alert("文件大于指定大小");
                break;
            case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
            case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
            default:
                alert(message);
                break;
        }

        addImage("../../images/" + imageName);

    } catch (ex) {
        this.debug(ex);
    }

}

function fileDialogComplete(numFilesSelected, numFilesQueued) {
    try {
        if (numFilesQueued > 0) {
            this.startUpload();
        }
    } catch (ex) {
        this.debug(ex);
    }
}

function uploadProgress(file, bytesLoaded) {

    try {
        var percent = Math.ceil((bytesLoaded / file.size) * 100);

        var progress = new FileProgress(file, this.customSettings.upload_target);
        progress.setProgress(percent);
        if (percent === 100) {
            progress.setStatus("创建缩略图...");
            progress.toggleCancel(false, this);
        } else {
            progress.setStatus("正在上传...");
            progress.toggleCancel(true, this);
        }
    } catch (ex) {
        this.debug(ex);
    }
}

function uploadSuccess(file, serverData) {
    try {
        addImage("thumbnail.aspx?id=" + serverData);

        var progress = new FileProgress(file, this.customSettings.upload_target);

        progress.setStatus("完成创建缩略图");
        progress.toggleCancel(false);

    } catch (ex) {
        this.debug(ex);
    }
}

function uploadComplete(file) {
    try {
        /*  I want the next upload to continue automatically so I'll call startUpload here */
        if (this.getStats().files_queued > 0) {
            this.startUpload();
        } else {
            var progress = new FileProgress(file, this.customSettings.upload_target);
            progress.setComplete();
            progress.setStatus("完成上传");
            progress.toggleCancel(false);
            location.reload();
            $('#myModal').modal("hide");
        }
    } catch (ex) {
        this.debug(ex);
    }
}

function uploadError(file, errorCode, message) {
    var imageName = "error.gif";
    var progress;
    try {
        switch (errorCode) {
            case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
                try {
                    progress = new FileProgress(file, this.customSettings.upload_target);
                    progress.setCancelled();
                    progress.setStatus("取消上传");
                    progress.toggleCancel(false);
                }
                catch (ex1) {
                    this.debug(ex1);
                }
                break;
            case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
                try {
                    progress = new FileProgress(file, this.customSettings.upload_target);
                    progress.setCancelled();
                    progress.setStatus("停止上传");
                    progress.toggleCancel(true);
                }
                catch (ex2) {
                    this.debug(ex2);
                }
            case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:
                imageName = "uploadlimit.gif";
                break;
            default:
                alert(message);
                break;
        }

        addImage("../../images/" + imageName);

    } catch (ex3) {
        this.debug(ex3);
    }

}

function addImage(src) {
    var newImg = document.createElement("img");
    newImg.style.margin = "5px";

    document.getElementById("thumbnails").appendChild(newImg);
    if (newImg.filters) {
        try {
            newImg.filters.item("DXImageTransform.Microsoft.Alpha").opacity = 0;
        } catch (e) {
            // If it is not set initially, the browser will throw an error.  This will set it if it is not set yet.
            newImg.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + 0 + ')';
        }
    } else {
        newImg.style.opacity = 0;
    }

    newImg.onload = function () {
        fadeIn(newImg, 0);
    };
    newImg.src = src;
}

function fadeIn(element, opacity) {
    var reduceOpacityBy = 5;
    var rate = 30; // 15 fps

    if (opacity < 100) {
        opacity += reduceOpacityBy;
        if (opacity > 100) {
            opacity = 100;
        }

        if (element.filters) {
            try {
                element.filters.item("DXImageTransform.Microsoft.Alpha").opacity = opacity;
            } catch (e) {
                // If it is not set initially, the browser will throw an error.  This will set it if it is not set yet.
                element.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + opacity + ')';
            }
        } else {
            element.style.opacity = opacity / 100;
        }
    }

    if (opacity < 100) {
        setTimeout(function () {
            fadeIn(element, opacity);
        }, rate);
    }
}

/* ******************************************
*    FileProgress Object
*    Control object for displaying file info
* ****************************************** */

function FileProgress(file, targetID) {
    this.fileProgressID = "divFileProgress";
    $('#myModal').modal({
        show: true,
        keyboard: false,
        backdrop: false
    });
    this.fileProgressWrapper = document.getElementById(this.fileProgressID);
    if (!this.fileProgressWrapper) {
        this.fileProgressWrapper = document.createElement("div");
        this.fileProgressWrapper.className = "progressWrapper";
        this.fileProgressWrapper.id = this.fileProgressID;

        this.fileProgressElement = document.createElement("div");
        this.fileProgressElement.className = "progressContainer";

        var progressCancel = document.createElement("a");
        progressCancel.className = "progressCancel";
        progressCancel.href = "#";
        progressCancel.style.visibility = "hidden";
        progressCancel.appendChild(document.createTextNode(" "));

        var progressText = document.createElement("div");
        progressText.className = "progressName";
        progressText.appendChild(document.createTextNode(file.name));

        var progressBar = document.createElement("div");
        progressBar.className = "progressBarInProgress";

        var progressStatus = document.createElement("div");
        progressStatus.className = "progressBarStatus";
        progressStatus.innerHTML = "&nbsp;";

        this.fileProgressElement.appendChild(progressCancel);
        this.fileProgressElement.appendChild(progressText);
        this.fileProgressElement.appendChild(progressStatus);
        this.fileProgressElement.appendChild(progressBar);

        this.fileProgressWrapper.appendChild(this.fileProgressElement);

        document.getElementById(targetID).appendChild(this.fileProgressWrapper);
        fadeIn(this.fileProgressWrapper, 0);

    } else {
        this.fileProgressElement = this.fileProgressWrapper.firstChild;
        this.fileProgressElement.childNodes[1].firstChild.nodeValue = file.name;
    }

    this.height = this.fileProgressWrapper.offsetHeight;

}
FileProgress.prototype.setProgress = function (percentage) {
    this.fileProgressElement.className = "progressContainer green";
    this.fileProgressElement.childNodes[3].className = "progressBarInProgress";
    this.fileProgressElement.childNodes[3].style.width = percentage + "%";
};
FileProgress.prototype.setComplete = function () {
    this.fileProgressElement.className = "progressContainer blue";
    this.fileProgressElement.childNodes[3].className = "progressBarComplete";
    this.fileProgressElement.childNodes[3].style.width = "";

};
FileProgress.prototype.setError = function () {
    this.fileProgressElement.className = "progressContainer red";
    this.fileProgressElement.childNodes[3].className = "progressBarError";
    this.fileProgressElement.childNodes[3].style.width = "";

};
FileProgress.prototype.setCancelled = function () {
    this.fileProgressElement.className = "progressContainer";
    this.fileProgressElement.childNodes[3].className = "progressBarError";
    this.fileProgressElement.childNodes[3].style.width = "";

};
FileProgress.prototype.setStatus = function (status) {
    this.fileProgressElement.childNodes[2].innerHTML = status;
};

FileProgress.prototype.toggleCancel = function (show, swfuploadInstance) {
    this.fileProgressElement.childNodes[0].style.visibility = show ? "visible" : "hidden";
    if (swfuploadInstance) {
        var fileID = this.fileProgressID;
        this.fileProgressElement.childNodes[0].onclick = function () {
            swfuploadInstance.cancelUpload(fileID);
            return false;
        };
    }
};

红色标注的地方都是我根据自己的需求修改的！