首页 > 代码库 > ASP.NET MVC异步上传文件
ASP.NET MVC异步上传文件
自己做的一个小dome。贴出来分享一下；
前端：
<form id="formfile" method="post" enctype="multipart/form-data">
<input type="file" name="FileUpload1" /><br />
<input type="button" value="http://www.mamicode.com/上传" onclick="tpFace()">
</form>
JS：
<script src="http://www.mamicode.com/~/js/MyAjaxForm.js"></script> function tpFace() {
$("#formfile").ajaxSubmit({
url: "/admin/SubmitFrom",
type: "post",
success: function (data) {
}
});
}
后台代码：
[HttpPost]
public ActionResult SubmitFrom(HttpPostedFileBase file)
{
HttpPostedFileBase imgFile = Request.Files[0];//获取到文件流
var filename = imgFile.FileName;
imgFile.SaveAs(Server.MapPath("../Test/" + filename)); //保存
return Content(filename);//返回文件名
}
引用的外部JS是<script src="http://www.mamicode.com/~/js/MyAjaxForm.js"></script>，这个MyAjaxForm不好找到，我在这把源代码贴出来，有需要的同学可以自行复制；以下是源代码：
/*!
* jQuery Form Plugin
* version: 2.96 (16-FEB-2012)
* @requires jQuery v1.3.2 or later
*
* Examples and documentation at: http://malsup.com/jquery/form/
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*/
;(function($) {
/*
Usage Note:
-----------
Do not use both ajaxSubmit and ajaxForm on the same form. These
functions are mutually exclusive. Use ajaxSubmit if you want
to bind your own submit handler to the form. For example,
$(document).ready(function() {
$(‘#myForm‘).bind(‘submit‘, function(e) {
e.preventDefault(); // <-- important
$(this).ajaxSubmit({
target: ‘#output‘
});
});
});
Use ajaxForm when you want the plugin to manage all the event binding
for you. For example,
$(document).ready(function() {
$(‘#myForm‘).ajaxForm({
target: ‘#output‘
});
});
You can also use ajaxForm with delegation (requires jQuery v1.7+), so the
form does not have to exist when you invoke ajaxForm:
$(‘#myForm‘).ajaxForm({
delegation: true,
target: ‘#output‘
});
When using ajaxForm, the ajaxSubmit function will be invoked for you
at the appropriate time.
*/
/**
* ajaxSubmit() provides a mechanism for immediately submitting
* an HTML form using AJAX.
*/
$.fn.ajaxSubmit = function(options) {
// fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
if (!this.length) {
log(‘ajaxSubmit: skipping submit process - no element selected‘);
return this;
}
var method, action, url, $form = this;
if (typeof options == ‘function‘) {
options = { success: options };
}
method = this.attr(‘method‘);
action = this.attr(‘action‘);
url = (typeof action === ‘string‘) ? $.trim(action) : ‘‘;
url = url || window.location.href || ‘‘;
if (url) {
// clean url (don‘t include hash vaue)
url = (url.match(/^([^#]+)/)||[])[1];
}
options = $.extend(true, {
url: url,
success: $.ajaxSettings.success,
type: method || ‘GET‘,
iframeSrc: /^https/i.test(window.location.href || ‘‘) ? ‘javascript:false‘ : ‘about:blank‘
}, options);
// hook for manipulating the form data before it is extracted;
// convenient for use with rich editors like tinyMCE or FCKEditor
var veto = {};
this.trigger(‘form-pre-serialize‘, [this, options, veto]);
if (veto.veto) {
log(‘ajaxSubmit: submit vetoed via form-pre-serialize trigger‘);
return this;
}
// provide opportunity to alter form data before it is serialized
if (options.beforeSerialize && options.beforeSerialize(this, options) === false) {
log(‘ajaxSubmit: submit aborted via beforeSerialize callback‘);
return this;
}
var traditional = options.traditional;
if ( traditional === undefined ) {
traditional = $.ajaxSettings.traditional;
}
var qx,n,v,a = this.formToArray(options.semantic);
if (options.data) {
options.extraData = http://www.mamicode.com/options.data;"fileAPI :" + fileAPI);
var shouldUseFrame = (hasFileInputs || multipart) && !fileAPI;
// options.iframe allows user to force iframe mode
// 06-NOV-09: now defaulting to iframe mode if file input is detected
if (options.iframe !== false && (options.iframe || shouldUseFrame)) {
// hack to fix Safari hang (thanks to Tim Molendijk for this)
// see: http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
if (options.closeKeepAlive) {
$.get(options.closeKeepAlive, function() {
fileUploadIframe(a);
});
}
else {
fileUploadIframe(a);
}
}
else if ((hasFileInputs || multipart) && fileAPI) {
options.progress = options.progress || $.noop;
fileUploadXhr(a);
}
else {
$.ajax(options);
}
// fire ‘notify‘ event
this.trigger(‘form-submit-notify‘, [this, options]);
return this;
// XMLHttpRequest Level 2 file uploads (big hat tip to francois2metz)
function fileUploadXhr(a) {
var formdata = new FormData();
for (var i=0; i < a.length; i++) {
if (a[i].type == ‘file‘)
continue;
formdata.append(a[i].name, a[i].value);
}
$form.find(‘input:file:enabled‘).each(function(){
var name = $(this).attr(‘name‘), files = this.files;
if (name) {
for (var i=0; i < files.length; i++)
formdata.append(name, files[i]);
}
});
if (options.extraData) {
for (var k in options.extraData)
formdata.append(k, options.extraData[k])
}
options.data = null;
var s = $.extend(true, {}, $.ajaxSettings, options, {
contentType: false,
processData: false,
cache: false,
type: ‘POST‘
});
//s.context = s.context || s;
s.data = null;
var beforeSend = s.beforeSend;
s.beforeSend = function(xhr, o) {
o.data = formdata;
if(xhr.upload) { // unfortunately, jQuery doesn‘t expose this prop (http://bugs.jquery.com/ticket/10190)
xhr.upload.onprogress = function(event) {
o.progress(event.position, event.total);
};
}
if(beforeSend)
beforeSend.call(o, xhr, options);
};
$.ajax(s);
}
// private function for handling file uploads (hat tip to YAHOO!)
function fileUploadIframe(a) {
var form = $form[0], el, i, s, g, id, $io, io, xhr, sub, n, timedOut, timeoutHandle;
var useProp = !!$.fn.prop;
if (a) {
if ( useProp ) {
// ensure that every serialized input is still enabled
for (i=0; i < a.length; i++) {
el = $(form[a[i].name]);
el.prop(‘disabled‘, false);
}
} else {
for (i=0; i < a.length; i++) {
el = $(form[a[i].name]);
el.removeAttr(‘disabled‘);
}
};
}
if ($(‘:input[name=submit],:input[id=submit]‘, form).length) {
// if there is an input with a name or id of ‘submit‘ then we won‘t be
// able to invoke the submit fn on the form (at least not x-browser)
alert(‘Error: Form elements must not have name or id of "submit".‘);
return;
}
s = $.extend(true, {}, $.ajaxSettings, options);
s.context = s.context || s;
id = ‘jqFormIO‘ + (new Date().getTime());
if (s.iframeTarget) {
$io = $(s.iframeTarget);
n = $io.attr(‘name‘);
if (n == null)
$io.attr(‘name‘, id);
else
id = n;
}
else {
$io = $(‘<iframe name="‘ + id + ‘" src="http://www.mamicode.com/‘+ s.iframeSrc +‘" />‘);
$io.css({ position: ‘absolute‘, top: ‘-1000px‘, left: ‘-1000px‘ });
}
io = $io[0];
xhr = { // mock object
aborted: 0,
responseText: null,
responseXML: null,
status: 0,
statusText: ‘n/a‘,
getAllResponseHeaders: function() {},
getResponseHeader: function() {},
setRequestHeader: function() {},
abort: function(status) {
var e = (status === ‘timeout‘ ? ‘timeout‘ : ‘aborted‘);
log(‘aborting upload... ‘ + e);
this.aborted = 1;
$io.attr(‘src‘, s.iframeSrc); // abort op in progress
xhr.error = e;
s.error && s.error.call(s.context, xhr, e, status);
g && $.event.trigger("ajaxError", [xhr, s, e]);
s.complete && s.complete.call(s.context, xhr, e);
}
};
g = s.global;
// trigger ajax global events so that activity/block indicators work like normal
if (g && ! $.active++) {
$.event.trigger("ajaxStart");
}
if (g) {
$.event.trigger("ajaxSend", [xhr, s]);
}
if (s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false) {
if (s.global) {
$.active--;
}
return;
}
if (xhr.aborted) {
return;
}
// add submitting element to data if we know it
sub = form.clk;
if (sub) {
n = sub.name;
if (n && !sub.disabled) {
s.extraData = http://www.mamicode.com/s.extraData || {};"image") {
s.extraData[n+‘.x‘] = form.clk_x;
s.extraData[n+‘.y‘] = form.clk_y;
}
}
}
var CLIENT_TIMEOUT_ABORT = 1;
var SERVER_ABORT = 2;
function getDoc(frame) {
var doc = frame.contentWindow ? frame.contentWindow.document : frame.contentDocument ? frame.contentDocument : frame.document;
return doc;
}
// Rails CSRF hack (thanks to Yvan Barthelemy)
var csrf_token = $(‘meta[name=csrf-token]‘).attr(‘content‘);
var csrf_param = $(‘meta[name=csrf-param]‘).attr(‘content‘);
if (csrf_param && csrf_token) {
s.extraData = http://www.mamicode.com/s.extraData || {};"extra" data to form if provided in options
var extraInputs = [];
try {
if (s.extraData) {
for (var n in s.extraData) {
extraInputs.push(
$(‘<input type="hidden" name="‘+n+‘">‘).attr(‘value‘,s.extraData[n])
.appendTo(form)[0]);
}
}
if (!s.iframeTarget) {
// add iframe to doc and submit the form
$io.appendTo(‘body‘);
io.attachEvent ? io.attachEvent(‘onload‘, cb) : io.addEventListener(‘load‘, cb, false);
}
setTimeout(checkState,15);
form.submit();
}
finally {
// reset attrs and remove "extra" input elements
form.setAttribute(‘action‘,a);
if(t) {
form.setAttribute(‘target‘, t);
} else {
$form.removeAttr(‘target‘);
}
$(extraInputs).remove();
}
}
if (s.forceSync) {
doSubmit();
}
else {
setTimeout(doSubmit, 10); // this lets dom updates render
}
var data, doc, domCheckCount = 50, callbackProcessed;
function cb(e) {
if (xhr.aborted || callbackProcessed) {
return;
}
try {
doc = getDoc(io);
}
catch(ex) {
log(‘cannot access response document: ‘, ex);
e = SERVER_ABORT;
}
if (e === CLIENT_TIMEOUT_ABORT && xhr) {
xhr.abort(‘timeout‘);
return;
}
else if (e == SERVER_ABORT && xhr) {
xhr.abort(‘server abort‘);
return;
}
if (!doc || doc.location.href =http://www.mamicode.com/= s.iframeSrc) {"ajaxSuccess", [xhr, s]);
}
else if (status) {
if (errMsg == undefined)
errMsg = xhr.statusText;
s.error && s.error.call(s.context, xhr, status, errMsg);
g && $.event.trigger("ajaxError", [xhr, s, errMsg]);
}
g && $.event.trigger("ajaxComplete", [xhr, s]);
if (g && ! --$.active) {
$.event.trigger("ajaxStop");
}
s.complete && s.complete.call(s.context, xhr, status);
callbackProcessed = true;
if (s.timeout)
clearTimeout(timeoutHandle);
// clean up
setTimeout(function() {
if (!s.iframeTarget)
$io.remove();
xhr.responseXML = null;
}, 100);
}
var toXml = $.parseXML || function(s, doc) { // use parseXML if available (jQuery 1.5+)
if (window.ActiveXObject) {
doc = new ActiveXObject(‘Microsoft.XMLDOM‘);
doc.async = ‘false‘;
doc.loadXML(s);
}
else {
doc = (new DOMParser()).parseFromString(s, ‘text/xml‘);
}
return (doc && doc.documentElement && doc.documentElement.nodeName != ‘parsererror‘) ? doc : null;
};
var parseJSON = $.parseJSON || function(s) {
return window[‘eval‘](‘(‘ + s + ‘)‘);
};
var httpData = http://www.mamicode.com/function( xhr, type, s ) { // mostly lifted from jq1.4.4"script" || !type && ct.indexOf("javascript") >= 0) {
$.globalEval(data);
}
}
return data;
};
}
};
/**
* ajaxForm() provides a mechanism for fully automating form submission.
*
* The advantages of using this method instead of ajaxSubmit() are:
*
* 1: This method will include coordinates for <input type="image" /> elements (if the element
* is used to submit the form).
* 2. This method will include the submit element‘s name/value data (for the element that was
* used to submit the form).
* 3. This method binds the submit() method to the form for you.
*
* The options argument for ajaxForm works exactly as it does for ajaxSubmit. ajaxForm merely
* passes the options argument along after properly binding events for submit elements and
* the form itself.
*/
$.fn.ajaxForm = function(options) {
options = options || {};
options.delegation = options.delegation && $.isFunction($.fn.on);
// in jQuery 1.3+ we can fix mistakes with the ready state
if (!options.delegation && this.length === 0) {
var o = { s: this.selector, c: this.context };
if (!$.isReady && o.s) {
log(‘DOM not ready, queuing ajaxForm‘);
$(function() {
$(o.s,o.c).ajaxForm(options);
});
return this;
}
// is your DOM ready? http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
log(‘terminating; zero elements found by selector‘ + ($.isReady ? ‘‘ : ‘ (DOM not ready)‘));
return this;
}
if ( options.delegation ) {
$(document)
.off(‘submit.form-plugin‘, this.selector, doAjaxSubmit)
.off(‘click.form-plugin‘, this.selector, captureSubmittingElement)
.on(‘submit.form-plugin‘, this.selector, options, doAjaxSubmit)
.on(‘click.form-plugin‘, this.selector, options, captureSubmittingElement);
return this;
}
return this.ajaxFormUnbind()
.bind(‘submit.form-plugin‘, options, doAjaxSubmit)
.bind(‘click.form-plugin‘, options, captureSubmittingElement);
};
// private event handlers
function doAjaxSubmit(e) {
var options = e.data;
if (!e.isDefaultPrevented()) { // if event has been canceled, don‘t proceed
e.preventDefault();
$(this).ajaxSubmit(options);
}
}
function captureSubmittingElement(e) {
var target = e.target;
var $el = $(target);
if (!($el.is(":submit,input:image"))) {
// is this a child element of the submit el? (ex: a span within a button)
var t = $el.closest(‘:submit‘);
if (t.length == 0) {
return;
}
target = t[0];
}
var form = this;
form.clk = target;
if (target.type == ‘image‘) {
if (e.offsetX != undefined) {
form.clk_x = e.offsetX;
form.clk_y = e.offsetY;
} else if (typeof $.fn.offset == ‘function‘) {
var offset = $el.offset();
form.clk_x = e.pageX - offset.left;
form.clk_y = e.pageY - offset.top;
} else {
form.clk_x = e.pageX - target.offsetLeft;
form.clk_y = e.pageY - target.offsetTop;
}
}
// clear form vars
setTimeout(function() { form.clk = form.clk_x = form.clk_y = null; }, 100);
};
// ajaxFormUnbind unbinds the event handlers that were bound by ajaxForm
$.fn.ajaxFormUnbind = function() {
return this.unbind(‘submit.form-plugin click.form-plugin‘);
};
/**
* formToArray() gathers form element data into an array of objects that can
* be passed to any of the following ajax functions: $.get, $.post, or load.
* Each object in the array has both a ‘name‘ and ‘value‘ property. An example of
* an array for a simple login form might be:
*
* [ { name: ‘username‘, value: ‘jresig‘ }, { name: ‘password‘, value: ‘secret‘ } ]
*
* It is this array that is passed to pre-submit callback functions provided to the
* ajaxSubmit() and ajaxForm() methods.
*/
$.fn.formToArray = function(semantic) {
var a = [];
if (this.length === 0) {
return a;
}
var form = this[0];
var els = semantic ? form.getElementsByTagName(‘*‘) : form.elements;
if (!els) {
return a;
}
var i,j,n,v,el,max,jmax;
for(i=0, max=els.length; i < max; i++) {
el = els[i];
n = el.name;
if (!n) {
continue;
}
if (semantic && form.clk && el.type == "image") {
// handle image inputs on the fly when semantic == true
if(!el.disabled && form.clk == el) {
a.push({name: n, value: $(el).val(), type: el.type });
a.push({name: n+‘.x‘, value: form.clk_x}, {name: n+‘.y‘, value: form.clk_y});
}
continue;
}
v = $.fieldValue(el, true);
if (v && v.constructor == Array) {
for(j=0, jmax=v.length; j < jmax; j++) {
a.push({name: n, value: v[j]});
}
}
else if (v !== null && typeof v != ‘undefined‘) {
a.push({name: n, value: v, type: el.type});
}
}
if (!semantic && form.clk) {
// input type==‘image‘ are not found in elements array! handle it here
var $input = $(form.clk), input = $input[0];
n = input.name;
if (n && !input.disabled && input.type == ‘image‘) {
a.push({name: n, value: $input.val()});
a.push({name: n+‘.x‘, value: form.clk_x}, {name: n+‘.y‘, value: form.clk_y});
}
}
return a;
};
/**
* Serializes form data into a ‘submittable‘ string. This method will return a string
* in the format: name1=value1&name2=value2
*/
$.fn.formSerialize = function(semantic) {
//hand off to jQuery.param for proper encoding
return $.param(this.formToArray(semantic));
};
/**
* Serializes all field elements in the jQuery object into a query string.
* This method will return a string in the format: name1=value1&name2=value2
*/
$.fn.fieldSerialize = function(successful) {
var a = [];
this.each(function() {
var n = this.name;
if (!n) {
return;
}
var v = $.fieldValue(this, successful);
if (v && v.constructor == Array) {
for (var i=0,max=v.length; i < max; i++) {
a.push({name: n, value: v[i]});
}
}
else if (v !== null && typeof v != ‘undefined‘) {
a.push({name: this.name, value: v});
}
});
//hand off to jQuery.param for proper encoding
return $.param(a);
};
/**
* Returns the value(s) of the element in the matched set. For example, consider the following form:
*
* <form><fieldset>
* <input name="A" type="text" />
* <input name="A" type="text" />
* <input name="B" type="checkbox" value="http://www.mamicode.com/B1" />
* <input name="B" type="checkbox" value="http://www.mamicode.com/B2"/>
* <input name="C" type="radio" value="http://www.mamicode.com/C1" />
* <input name="C" type="radio" value="http://www.mamicode.com/C2" />
* </fieldset></form>
*
* var v = $(‘:text‘).fieldValue();
* // if no values are entered into the text inputs
* v == [‘‘,‘‘]
* // if values entered into the text inputs are ‘foo‘ and ‘bar‘
* v == [‘foo‘,‘bar‘]
*
* var v = $(‘:checkbox‘).fieldValue();
* // if neither checkbox is checked
* v === undefined
* // if both checkboxes are checked
* v == [‘B1‘, ‘B2‘]
*
* var v = $(‘:radio‘).fieldValue();
* // if neither radio is checked
* v === undefined
* // if first radio is checked
* v == [‘C1‘]
*
* The successful argument controls whether or not the field element must be ‘successful‘
* (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
* The default value of the successful argument is true. If this value is false the value(s)
* for each element is returned.
*
* Note: This method *always* returns an array. If no valid value can be determined the
* array will be empty, otherwise it will contain one or more values.
*/
$.fn.fieldValue = http://www.mamicode.com/function(successful) {>
ASP.NET MVC异步上传文件
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。