swfupload上传方法封装

function fileQueueError(file, errorCode, message) {    try {        switch (errorCode) {            case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:                art.dialog({ content: "文件过大,请选择500k以下的文件", title: "错误", lock: true, width: 350, icon: "error" });                break;            case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:                art.dialog({ content: "无法上传零字节文件", title: "错误", lock: true, width: 350, icon: "error" });                break;            case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:                art.dialog({ content: "不支持的文件类型", title: "错误", lock: true, width: 350, icon: "error" });                break;            default:                if (file !== null) {                    art.dialog({ content: "未处理的错误", title: "错误", lock: true, width: 350, icon: "error" });                }                break;        }    } catch (ex) {        this.debug(ex);    }}function fileDialogComplete(numFilesSelected, numFilesQueued) {    try {        var obj = this;        if (numFilesQueued > 0) {                            obj.startUpload();        }    } catch (ex) {        this.debug(ex);    }}function uploadProgress(file, bytesLoaded) {    try {            } catch (ex) {        this.debug(ex);    }}function uploadSuccess(file, serverData) {    try {        var json = eval("(" + serverData + ")");        if (json.err == "0") {            $("#img").attr("src", json.data);            $("#himg").val(json.data);        }        else {            art.dialog({ content: json.msg, title: "错误", lock: true });        }    } catch (ex) {        this.debug(ex);    }}function uploadComplete(file) {    try {        if (this.getStats().files_queued > 0) {            this.startUpload();        }    } catch (ex) {        this.debug(ex);    }}function uploadError(file, errorCode, message) {    try {        switch (errorCode) {            case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:                try {                }                catch (ex1) {                    this.debug(ex1);                }                break;            case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:                    try {                    }                    catch (ex2) {                        this.debug(ex2);                    }            case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:                break;            default:                break;        }    } catch (ex3) {        this.debug(ex3);    }}function InitMySwf(settings, swfObj) {    if (settings.buttonId == undefined) {        art.dialog({ title: "错误", content: "请给上传控件指定容器ID", lock: true, drag: false });        return;    }    var upload_url = "/handler/UpLoadImgFile.ashx";    if (settings.upload_url != undefined) {        upload_url = settings.upload_url;    }    var file_queue_error_handler = fileQueueError;    if (settings.file_queue_error_handler != undefined) {        file_queue_error_handler = settings.file_queue_error_handler;    }    var upload_progress_handler = uploadProgress;    if (settings.upload_progress_handler != undefined) {        upload_progress_handler = settings.upload_progress_handler;    }    var upload_error_handler = uploadError;    if (settings.upload_error_handler != undefined) {        upload_progress_handler = settings.upload_progress_handler;    }    var upload_success_handler = uploadSuccess;    if (settings.upload_success_handler != undefined) {        upload_success_handler = settings.upload_success_handler;    }    var upload_complete_handler = uploadComplete;    if (settings.upload_complete_handler != undefined) {        upload_complete_handler = settings.upload_complete_handler;    }    var file_dialog_complete_handler = fileDialogComplete;    if (settings.file_dialog_complete_handler != undefined) {        file_dialog_complete_handler = settings.file_dialog_complete_handler;    }    var button_width = 72;    if (settings.button_width != undefined) {        button_width = settings.button_width;    }    var button_height = 29;    if (settings.button_height != undefined) {        button_height = settings.button_height;    }    var filetype = "*.jpg;*.png;*.gif";    if (settings.file_types != undefined) {        filetype = settings.file_types;    }    var action = "upload";    if (settings.action != undefined) {        action = settings.action;    }        var buttonId = settings.buttonId;    swfObj = new SWFUpload({        // 基本设置        upload_url: upload_url,        post_params: {            "ASPSESSID": Math.random(),            ac: action        },        // 上传文件设置        file_size_limit: "0",        file_types: filetype,        file_types_description: "支持上传的格式",        file_upload_limit: "500",    // 0表示不限制选择文件的数量        // 定义事件        file_queue_error_handler: file_queue_error_handler,        file_dialog_complete_handler: file_dialog_complete_handler,        upload_progress_handler: upload_progress_handler,        upload_error_handler: upload_error_handler,        upload_success_handler: upload_success_handler,        upload_complete_handler: upload_complete_handler,        // 按钮设置        button_placeholder_id: buttonId,        button_width: button_width,        button_height: button_height,        button_cursor: SWFUpload.CURSOR.HAND,        button_window_mode: "transparent",        button_text_top_padding: 0,        button_text_left_padding: 0,        // Flash设置，下面三行必须有        flash_url: "/swfupload/swfupload.swf",        //跨域        prevent_swf_caching: false,        preserve_relative_urls: false,        // 是否开启调试，true是，false否        debug: false    });}

使用时：

var swfu;$(function () {    var myswfsetting = {        buttonId: "spanButtonPlaceholder1"    };    InitMySwf(myswfsetting, swfu);    //myswfbox });

本方法中用了artdialog的弹窗，因此调用时，请保证在本脚本前引用了artdialog

顺便粘一下后台处理的代码：

ajaxMsgModel rm = new ajaxMsgModel { err = 1, msg = "非法提交" };            string ac = context.Request["ac"];            if (ac == "upload")            {                try                {                    HttpPostedFile pfile = context.Request.Files["Filedata"];                    if (pfile == null)                    {                        return;                    }                    string fileformat = pfile.FileName.Substring(pfile.FileName.LastIndexOf(".")).ToLower() ;                    string fileflx = ",.zip,.rar,.doc,.docx,.xls,.xlsx,";                    if (!fileflx.Contains(fileformat))                    {                        return;                    }                                        DateTime dtime = DateTime.Now;                    string filename = string.Format("{0:yyyyMMddHHmmss}", dtime) + fileformat;                    string folder = context.Server.MapPath("/upload/");                    if (!Directory.Exists(folder))                    {                        IOHelper.CreateFoder(folder);                    }                                        string filepath = folder + filename;                    //保存文件                    pfile.SaveAs(filepath);                    rm = new ajaxMsgModel { err = 0, msg = filename,data="/upload/"+filename };                    return;                }                catch (Exception ex)                {                    rm = new ajaxMsgModel { err = 1, msg = ex.Message };                }                finally                {                    string msg = OutputHelper.GetJsonMsg(rm);                    context.Response.Write(msg);                }