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$("#btnLoadPhoto").upload({ url: "../UploadForms/RequestUpload.aspx?action=photo", type: "json", callback: calla });
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//获得表单元素
HttpPostedFile oFile = context.Request.Files[0];
//设置上传路径
string strUploadPath = "temp/";
//获取文件名称
string fileName = context.Request.Files[0].FileName;
补充：JQuery是继prototype之后又一个优秀的Javascript库。它是轻量级的js库 ，它兼容CSS3，还兼容各种浏览器（IE 6.0+, FF 1.5+, Safari 2.0+, Opera 9.0+），jQuery2.0及后续版本将不再支持IE6/7/8浏览器。jQuery使用户能更方便地处理HTML（标准通用标记语言下的一个应用）、events、实现动画效果，并且方便地为网站提供AJAX交互。jQuery还有一个比较大的优势是，它的文档说明很全，而且各种应用也说得很详细，同时还有许多成熟的插件可供选择。jQuery能够使用户的html页面保持代码和html内容分离，也就是说，不用再在html里面插入一堆js来调用命令了，只需要定义id即可。
不懂你是什么意思，能说请楚点吗。jquery上传图片你可以试下 Jquery插件AjaxUpload
File Upload组件啊，是同步还是异步呢
html部分：
input type="file" name="file" class="webuploader-element-invisible" multiple="multiple" accept="image/*"
文件引入：
link rel="stylesheet" type="text/css" href="diyUpload/css/diyUpload.css"script type="text/javascript" src="diyUpload/js/diyUpload.js"/script
HTML部分：
div id="demo" div id="as" /div/div
JS部分：
script type="text/javascript"
/** 服务器地址,成功返回,失败返回参数格式依照jquery.ajax习惯;* 其他参数同WebUploader*/
$('#as').diyUpload({
url:'server/fileupload.php',
success:function( data ) {
console.info( data ); },
error:function( err ) {
console.info( err );
},
buttonText : '选择文件', chunked:true, // 分片大小
chunkSize:512 * 1024, //最大上传的文件数量, 总文件大小,单个文件大小(单位字节);
fileNumLimit:50,
fileSizeLimit:500000 * 1024,
fileSingleSizeLimit:50000 * 1024,
accept: {}});
/script
function showImage(fileid,imgid,atagID){
var ext = "_0";
var thumb = $('img#'+imgid);
var litbox = $('a#'+atagID);
var img1path = document.getElementById("img1path");;
if($('.onTeedaError').length0){
//img1path.value="";
}
var messages =document.getElementById("messages");
if(messages!=null){
//img1path.value="";
}
new AjaxUpload(fileid, {
action: '../../PdfChangeImgUploadServlet?pdfNameEnd=_PERT',
name: ext,
onSubmit: function(file, extension) {
extension=extension.toLowerCase();
if(extension=="pdf")
{
$("#photoError").hide();
$.blockUI({
message: $('span#displayBox'),
css: {
border: 'none',
width: '270px',
}
});
}else{
$("#photoError").show();
return false;
}
},
onComplete: function(file, response) {
$('.pdfImg').remove();
$('#pfont').hide();
$.unblockUI();
var res = eval('('+response+');');
var timestemp = new Date().getTime();
var srcStr = res['srcStr'];
$('#addImg').val(res['srcStr']);
var imgWidth = res['w'] + "px";
var imgHeight = res['h'] + "px";
$("#addImgWidth").val(imgWidth);
$("#addImgHeight").val(imgHeight);
var str = "";
var arr = [];
arr = srcStr.split(",");
$('#imgFile').attr("value",srcStr);
for(var i=0;iarr.length;i++){
var jpgsrc = arr[i] + '?'+ timestemp;
if(i == 0){
str=str+"a class=\"pdfImg\" style=\"margin-left:10px;\" href="+jpgsrc+" rel=\"lightbox"+timestemp+"\"";
str=str+"img class=\"jpgImgFont\" src="+jpgsrc+" style=\"vertical-align:middle;cursor:pointer;width:"+ imgWidth +";height:"+ imgHeight +" \" /";
str=str+"/a";
} else {
str=str+"a class=\"pdfImg\" style=\"margin-left:10px;display:none;\" href="+jpgsrc+" rel=\"lightbox"+timestemp+"\"";
str=str+"img class=\"jpgImgFont\" src="+jpgsrc+" style=\"vertical-align:middle;cursor:pointer;width:"+ imgWidth +";height:"+ imgHeight +" \" /";
str=str+"/a";
}
}
$('#imgFontDiv').append(str);
//thumb.attr('src', res['src']+'?'+timestemp);
//litbox.attr('href', res['src']+'?'+timestemp);
lightbox.refresh();
$('.jpgImgFont').attr('style', 'width: ' + imgWidth + '; height: ' + imgHeight + ";" ).hide().fadeIn('slow');
if(res['img1path']!=""){
img1path.value=res['img1path'];
}
if (imgid == 'imgFont') {
document.getElementById("photoName").value=res['srcStr'].substring(res['srcStr'].lastIndexOf("/")+1);
}
//}
}
});
}
function goClearPhoto(textID,imgID,hrefID,photoName){
var _file = document.getElementById(textID);
if(_file.files)
{
_file.value = "";
}
else
{
if (typeof _file != "object")
{
return null;
}
var textID=document.getElementById(textID);
textID.value="";
var timestemp = new Date().getTime();
var src=document.getElementById("carPermitDefaultPath").value;
var thumb = $('img#'+imgID);
var litbox = $('a#'+hrefID);
thumb.attr('src',"/groupware/images/PdfSample.png");
thumb.attr('style', 'width:230px;height:240px;border:0px;vertical-align:middle;cursor:pointer;' ).hide().fadeIn('slow');
litbox.attr('href',"/groupware/images/PdfSample.png"+'?'+timestemp);
$('.pdfImg').remove();
litbox.show();
lightbox.refresh();
var photoName=document.getElementById(photoName);
photoName.value=null;
var imgFont= document.getElementById(imgFont);
imgFont.value = null;
}
$("#imgFile").val("");
$("#img1path").val("");
}
html:
body onload="showImage('insUpdPermitPhoto','imgFont','pfont');
div style="margin-top:3px;margin-bottom:-8px"
span class="sl-custom-file" style=""
input type="text" id="img1path" placeholder="対応フォーマット：pdfのみ" readonly="true" class="input-height" style="width:260px;height:20px;"/
button class="btn btn-small" id="reference" type="button" style="margin-left:-2px;margin-top:-12px"
span style="color:black;"参照/span
/button
input type="file" id='insUpdPermitPhoto' class="fileTransIE10 ui-input-file" name="ufile" onChange="getValue(this,'img1path')" /
/span
a href="javascript:void(0)" onfocus="this.blur();" onClick="goClearPhoto('img1path','imgFont','pfont','photoName');" class="btn btn-small" style="margin-top:-15px;"
span style="color:black;"削除/span
/a
/div
后台用copy方法把图片复制到指定路径就可以了
