SWFUpload是一个批量上传插件，在HTML4.1里面，估计也只有Flash+javascript配合才能够做到了。先复制个重要的网址，这个应该是官方的文档了，相当齐全。
http://leeon.me/upload/other/swfupload.html#uploadStart
这个是格式比较好看的。
http://www.cnblogs.com/2050/archive/2012/08/29/2662932.html
算了，这个文档的内容太多，各种属性各种方法，记不了这么多，直接贴上个实例算了。
前台是视图javascript代码：
<script src="@Url.Content("~/Scripts/Swfupload/swfupload.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/Swfupload/handlers.js")" charset="utf-8" type="text/javascript"></script>
<script type="text/javascript">
var swfu;
$(function () {
swfu = new SWFUpload({
//Backend Settings
upload_url: '@Url.Action("AjaxUploadPic")', //网上说一定要是绝对路径
// post_params: { "name": "value", "name": "value" }, //上传时可提交参数
post_params: {
"ASPSESSID": "<%=Session.SessionID %>",
},
use_query_string: false,
// File Upload Settings
file_size_limit: "200 MB", //文件最大值
file_types: "*.*", //文件类型，
file_types_description: "JPG Images",
file_upload_limit: "10", //Zero means unlimited
file_queue_limit: "10", //只允许一个文件
//文件上传事件驱动，冒号后边是函数（方法），方法放到 handlers.js 里面了，方便管理。
file_queue_error_handler: fileQueueError,
file_dialog_complete_handler: fileDialogComplete,
file_queued_handler: fileQueued,
upload_progress_handler: uploadProgress, //文件上传过程中定时触发，可用来显示上传进度
upload_error_handler: uploadError, //上传失败触发
upload_success_handler: uploadSuccess, //上传成功触发
upload_complete_handler: uploadComplete, //上传成功和失败都会触发
upload_start_handler: uploadStart, //上传前触发，一般可用来初始化提交参数
//FlashButton settings
button_image_url: '@Url.Content("~/Scripts/Swfupload/images/112.jpg")', //flash按钮背景，注意自己的路径。
button_placeholder_id: "spanButtonPlaceholder", //页面存放按钮的容器
button_width: 200,
button_height: 51,
button_text: '<span class="buttonCss"></span>', //按钮文本
button_text_style: ".button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt; } .buttonSmall { font-size: 10pt; }", //按钮文本样式
button_text_top_padding: 1,
button_text_left_padding: 5,
button_cursor: SWFUpload.CURSOR.HAND,
button_action: SWFUpload.BUTTON_ACTION.SELECT_FILES, //多文件上传 单文件上传设置，详细见中文说明,页面有连接
//Flash Settings
flash_url: '@Url.Content("~/Scripts/Swfupload/swfupload.swf")',
custom_settings: { upload_target: "divFileProgressContainer" },
//Debug Settings
debug: false
});
});
</script>
handle处理javascript代码：
var fileCount;
function fileQueueError(file, errorCode, message) {
//alert(file.name + message);
try {
var imageName = "error.gif";
var errorName = "";
if (errorCode === SWFUpload.errorCode_QUEUE_LIMIT_EXCEEDED) {
errorName = "You have attempted to queue too many files.";
}
if (errorName !== "") {
alert(errorName);
return;
}
switch (errorCode) {
case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
imageName = "zerobyte.gif";
break;
case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
imageName = "toobig.gif";
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 fileQueued(file) {
try {
var progress = new FileProgress(file, this.customSettings.upload_target);
progress.setProgress(0);
progress.toggleCancel(true, this);
} catch (ex) {
this.debug(ex);
}
}
function uploadStart(file) {
this.addPostParam("bank", $(".in").val());
}
function fileDialogComplete(numFilesSelected, numFilesQueued) {
try {
if (numFilesQueued > 0) {
fileCount = numFilesQueued;
if ($("#itemId").val() == "") {
alert("Please save the basic information First!");
}
else {
this.addPostParam("itemId", $("#itemId").val());
this.startUpload(); //选择完成直接上传
}
}
} 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.toggleCancel(false, this);
} else {
progress.toggleCancel(true, this);
}
} catch (ex) {
this.debug(ex);
}
}
var imagesCount = -1;
function uploadSuccess(file, serverData) {
imagesCount++;
try {
var image = strToJson(serverData);
if (image.success == "0") {
alert(image.name);
}
else {
$(".album_list li").eq(imagesCount).find("img").attr("src", image.name);
}
var progress = new FileProgress(file, this.customSettings.upload_target);
progress.toggleCancel(false);
} catch (ex) {
this.debug(ex);
}
//alert(serverData);
}
var iCount = 0;
function itemUpdateuploadSuccess(file, serverData) {
iCount++;
var image = strToJson(serverData);
if (image.success == "0") {
alert(image.name);
}
else {
var dom = $("<li><img src='" + image.name + "' alt='' /></li>");
$(".album_list").append(dom);
}
if (iCount == fileCount) {
alert("upload success!")
}
var progress = new FileProgress(file, this.customSettings.upload_target);
progress.toggleCancel(false);
}
function strToJson(str) {
var json = (new Function("return " + str))();
return json;
}
function uploadComplete(file) {
try {
var progress = new FileProgress(file, this.customSettings.upload_target);
progress.setComplete();
if (this.getStats().files_queued > 0) {
this.startUpload();
} else {
progress.toggleCancel(false);
}
} 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.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.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) {
if (file.filestatus != -5) {
this.fileProgressID = file.id;
this.fileProgressWrapper = document.getElementById(this.fileProgressID);
if (this.fileProgressWrapper == null) {
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.innerHTML = "delete";
var progressText = document.createElement("div");
progressText.className = "progressName";
progressText.appendChild(document.createTextNode(file.name + " (" + (file.size / 1024000).toFixed(2) + " MB)"));
var progressBar = document.createElement("div");
progressBar.className = "progressBarInProgress";
var progressStatus = document.createElement("div");
progressStatus.className = "progressBarStatus";
this.fileProgressElement.appendChild(progressText);
this.fileProgressElement.appendChild(progressStatus);
progressStatus.appendChild(progressBar);
this.fileProgressElement.appendChild(progressCancel);
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[1].childNodes[0].className = "progressBarInProgress";
this.fileProgressElement.childNodes[1].childNodes[0].style.width = percentage + "%";
};
FileProgress.prototype.setComplete = function() {
this.fileProgressElement.className = "progressContainer blue";
this.fileProgressElement.childNodes[1].childNodes[0].className = "progressBarInProgress";
this.fileProgressElement.childNodes[1].childNodes[0].style.width = "100%";
var progressOk = document.createElement("span");
progressOk.className = "progressOk";
progressOk.innerHTML = "ok";
this.fileProgressWrapper.childNodes[0].appendChild(progressOk);
};
FileProgress.prototype.setError = function() {
this.fileProgressElement.className = "progressContainer red";
this.fileProgressElement.childNodes[1].childNodes[0].className = "progressBarError";
this.fileProgressElement.childNodes[1].childNodes[0].style.width = "";
};
FileProgress.prototype.setCancelled = function() {
this.fileProgressElement.className = "progressContainer";
this.fileProgressElement.childNodes[1].childNodes[0].className = "progressBarError";
this.fileProgressElement.childNodes[1].childNodes[0].style.width = "";
};
//FileProgress.prototype.setStatus = function(status) {
// this.fileProgressElement.childNodes[2].innerHTML = status;
//};
FileProgress.prototype.toggleCancel = function(show, swfuploadInstance) {
this.fileProgressElement.childNodes[2].style.display = show ? "block" : "none";
if (swfuploadInstance) {
var fileID = this.fileProgressID;
var filePro = this.fileProgressElement.childNodes[2];
filePro.onclick = function() {
var f = document.getElementById(fileID);
f.parentNode.removeChild(f);
swfuploadInstance.cancelUpload(fileID);
return false;
};
}
};
HTML代码：
<div class="album">
<div>
<span>会员相册</span>
<div style="margin-left:480px;">
<span id="spanButtonPlaceholder" style="margin-left:300px">dddd</span>
<input type="button" value="确定上传" style="display:none;" onclick="javascript:swfu.startUpload()" />
<div id="divFileProgressContainer" style="display:none;"></div>
</div>
<div class="clear"></div>
</div>
<ul class="album_list">
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
<li><img src="/Content/CenterImages/upload_image.png" alt="" /></li>
</ul>
<div class="clear"></div>
</div>
控制器代码：
public ActionResult AjaxUploadPic()
{
PublicCRUD_Respository CRUD = new PublicCRUD_Respository();
HttpPostedFileBase PostedFile = null;
PostedFile = HttpContext.Request.Files[0];
string itemId = HttpContext.Request.Form["itemId"];
int ItemId = -1;
if (!string.IsNullOrEmpty(itemId))
{
ItemId = Convert.ToInt32(itemId);
}
if(ItemId == -1)
{
return Content("");
}
MariItemInfo Entity = CRUD.SelectById<MariItemInfo>(ItemId);
if (Entity.Create.UserId != CurrentUser.UserId)
{
return Content("");
}
object json = null;
if (PostedFile != null)
{
bool success;
string result;
int count = (int)CRUD.Select_Unique_BySQL("select count(ItemId) from Mari_ItemInfo_Album where itemId = " + ItemId);
if (count < 10)
{
result = UploadFile.SaveFile(PostedFile, UploadFile.PicPath, out success);
if (success)
{
FileInfo fileInfo = new FileInfo(result);
//路径存入数据库
if (ItemId != -1)
{
MariItemInfoAlbum AlbumEntity = new MariItemInfoAlbum();
AlbumEntity.CreateTime = DateTime.Now;
AlbumEntity.Pic = UploadFile.UrlConvertor(fileInfo.FullName);
AlbumEntity.PicStatus = true;
AlbumEntity.PicQuality = 10;
MariItemInfo ItemEntity = new MariItemInfo();
ItemEntity.ItemId = ItemId;
AlbumEntity.MariItemInfo = ItemEntity;
CRUD.Insert<MariItemInfoAlbum>(AlbumEntity);
}
json = new { success = 1, name = UploadFile.UrlConvertor(fileInfo.FullName) };
}
else
{
json = new { success = 0, name = "图片保存失败" };
}
}
else
{
json = new { success = 0, name = "一个用户最多只能上传10张图片!" };
}
}
else
{
json = new { success = 0 };
}
return Json(json, "text/html", JsonRequestBehavior.AllowGet);
}
值得说的是，当页面需要Session验证才能操作的时候在Chrome和火狐浏览器里会上传不了，据说是Session的问题，这个时候可以在Global.asax里面加入下段代码：
protected void Application_Start()
{
//火狐，谷歌批量上传兼容
Matchmaking.Infrastructure.SwfUploadCompatible.FireFoxCompatible();
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
}
public static void FireFoxCompatible()
{
try
{
string session_param_name = "ASPSESSID";
string session_cookie_name = "ASP.NET_SESSIONID";
if (HttpContext.Current.Request.Form[session_param_name] != null)
{
UpdateCookie(session_cookie_name, HttpContext.Current.Request.Form[session_param_name]);
}
else if (HttpContext.Current.Request.QueryString[session_param_name] != null)
{
UpdateCookie(session_cookie_name, HttpContext.Current.Request.QueryString[session_param_name]);
}
}
catch (Exception)
{ }
}
public static void UpdateCookie(string cookie_name, string cookie_value)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
if (cookie == null)
{
HttpCookie cookie1 = new HttpCookie(cookie_name, cookie_value);
System.Web.HttpContext.Current.Response.Cookies.Add(cookie1);
}
else
{
cookie.Value = cookie_value;
HttpContext.Current.Request.Cookies.Set(cookie);
}
}
而在前台页面的代码中，加入如下参数选项：
post_params: {
"ASPSESSID": "<%=Session.SessionID %>",
}
