后台需要对应的名称 auto: true,previewZoom: null,uploadComplete: function (res) { console.log("uploadComplete",res); },uploadError: function (err) { console.log("uploadError",err); },onProgress: function (percent) { // 提供给外部获取单个文件的上传进度，供外部实现上传进度效果 console.log(percent); },}; para = $.extend(para,options);

var $self = $(para.filebutton);
//先加入一个file元素
var multiple = ""; // 设置多选的参数
para.multiple ? multiple = "multiple" : multiple = "";
$self.css('position','relative');
$self.append('<input id="fileImage" style="opacity:0;position:absolute;top: 0;left: 0;width:100%;height:100%" type="file" size="30" name="fileselect[]" ' + multiple + '>');

var doms = {
"fileToUpload": $self.parent().find("#fileImage"),// "thumb": $self.find(".thumb"),// "progress": $self.find(".upload-progress")
};
var core = {
fileSelected: function () {
var files = (doms.fileToUpload)[0].files;
var count = files.length;
console.log("共有" + count + "个文件");
for (var i = 0; i < count; i++) {
var item = files[i];
console.log(item.size);
if (para.auto) {
core.uploadFile(item);
}
core.previewImage(item);
}
},uploadFile: function (file) {
console.log("开始上传");
var formdata = new FormData();

formdata.append(para.filebase,file);//这个名字要和mvc后台配合

var xhr = new XMLHttpRequest();
xhr.upload.addEventListener("progress",function (e) {

var percentComplete = Math.round(e.loaded * 100 / e.total);
para.onProgress(percentComplete.toString() + '%');
});
xhr.addEventListener("load",function (e) {
para.uploadComplete(xhr.responseText);
});
xhr.addEventListener("error",function (e) {
para.uploadError(e);
});

xhr.open("post",para.url,true);
//xhr.setRequestHeader("X_FILENAME",file.name);
xhr.send(formdata);
},uploadFiles: function () {
var files = (doms.fileToUpload)[0].files;
for (var i = 0; i < files.length; i++) {
core.uploadFile(files[i]);
}
},previewImage: function (file) {
if (!para.previewZoom) return;
var img = document.createElement("img");
img.file = file;
$(para.previewZoom).append(img);
// 使用FileReader方法显示图片内容
var reader = new FileReader();
reader.onload = (function (aImg) {
return function (e) {
aImg.src = e.target.result;
};
})(img);
reader.readAsDataURL(file);
}
}
doms.fileToUpload.on("change",function () {
//doms.progress.find("span").width("0");
console.log("选中了文件");
core.fileSelected();
});

console.log("初始化!");
//绑定事件

$(document).on("click",para.filebutton,function () {
console.log("clicked");
//doms.fileToUpload.click();
});
if (para.uploadButton) {
$(document).on("click",para.uploadButton,function () {
core.uploadFiles();
});
}
}
});
})(Zepto);

文件格式不对！" },JsonRequestBehavior.AllowGet);

if (file != null)
{
var path = "~/Content/UploadFiles/" + dir + "/";
var uploadpath = Server.MapPath(path);
if (!Directory.Exists(uploadpath))
{
Directory.CreateDirectory(uploadpath);
}
string fileName = Path.GetFileName(file.FileName);// 原始文件名称
string fileExtension = Path.GetExtension(fileName); // 文件扩展名
//string saveName = Guid.NewGuid() + fileExtension; // 保存文件名称 这是个好方法。
string saveName = Encrypt.GenerateOrderNumber() + fileExtension; // 保存文件名称 这是个好方法。
file.SaveAs(uploadpath + saveName);

return Json(new { Success = true,SaveName = path + saveName });
}
return Json(new { Success = false,Message = "请选择要上传的文件！" },JsonRequestBehavior.AllowGet);

}

UploadImg