最近使用 jQuery 的插件 ajaxFileUpload.js,使用Bootstrap 的样式,配合php,实现了一个简单的上传功能,简单记录了一下。
1、在网页顶部引入Bootstrap上传样式以及按钮样式:
<link href="/assets/global/plugins/bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css">
<link href="/assets/global/plugins/bootstrap-fileinput/bootstrap-fileinput.css" rel="stylesheet" type="text/css"/>
<style>
.btn.default {
color: #333333;
background-color: #E5E5E5;
}
</style>
2、在网页底部引入jQuery、Bootstrap上传js、ajaxFileUpload插件:
<script src="/assets/global/plugins/jquery.min.js" type="text/javascript"></script>
<script src="/assets/global/plugins/bootstrap-fileinput/bootstrap-fileinput.js" type="text/javascript"></script>
<script src="/ajaxfileupload.js" type="text/javascript"></script>
3、php网页 fileUpload.php HTML代码:
<div class="fileinput $v['files']) ){ echo 'fileinput-exists'; }else{ echo 'fileinput-new'; }?>" data-provides="fileinput">
<div class="fileinput-new thumbnail" style="width: 150px; height: 150px;">
<img src="http://www.placehold.it/150x150/EFEFEF/AAAAAA&text=no+image" alt=""/>
</div>
<div class="fileinput-preview fileinput-exists thumbnail" style="max-width: 150px; max-height: 150px;">
<?php if( !empty($v['files']) ){
echo '. $v['files'] . '"/>'; }?>
</div>
<div>
<span class="btn default btn-file">
<span class="fileinput-new"> 选择 </span>
<span class="fileinput-exists"> 修改 </span>
<input type="file" id="upfile$v['id'];?>" name="upfile$v['id'];?>">
</span>
<a href="javascript:;" class="btn default fileinput-exists" data-dismiss="fileinput"> 移除 </a>
<a href="javascript:void(0);" onclick="ajaxFileUpload('$v['id'];?>')" class="btn default fileinput-exists"> 提交 </a>
</div>
</div>
4、php网页 fileUpload.php JavaScript代码:
function ajaxFileUpload(id)
{
$.ajaxFileUpload({
url:'/ajaxFileUpload', //处理上传文件的服务端
data:{
id:id},
secureuri:false,
fileElementId:'upfile'+id,
dataType: 'json',
success: function (data)
{
alert(data.msg);
}
})
}
5、php后台代码:
//打开网页,使用了CI框架
public function fileUploadView()
{
//此处可添加读取数据库代码,获取已上传文件相关数据
$data = array();
$data['id'] = 'your file id';
$data['files'] = 'your file name';
$this->_data['v'] = $data;
$this->load->view('fileUpload', $this->_data);
}
//处理上传文件的服务端代码
public function ajaxFileUpload()
{
$id = $this->input->post('id');
$upfile = $_FILES['upfile' . $id];
$error = $upfile['error']; //错误码,正常为0
$name = $upfile['name']; //文件名
$size = $upfile['size']; //文件大小-字节
$tmp_name = $upfile['tmp_name']; //服务器临时文件路径
$type = $upfile['type']; //图片类型如"image/png"
//新文件名(files+时间戳+随机数+原文件类型)
$filetype = substr($name, strripos($name, ".") + 1);
$newname = "files" . time() . (string)rand(100, 999) . "." . $filetype;
//上传文件路径(上传文件目录+新文件名)
//FCPATH 配置的项目路径
$upfilespath = FCPATH . '/webroot/images/upfiles/' . $newname;
$flag = @move_uploaded_file($tmp_name, $upfilespath);
if ($flag === FALSE) {
echo json_encode(array('msg' => 'error'));
} else {
//此处可添加更新数据库代码
echo json_encode(array('msg' => 'ok'));
}
}
将以上代码结合起来就可以完成上传功能了。
上传选择前效果图:
上传选择后效果图:
附:
ajaxfileupload.js 网上有很多版本,此处记录一下源码防止后续版本更新后不能再使用,源码:
jQuery.extend({
createUploadIframe: function (id, uri) {
//create frame
var frameId = 'jUploadFrame' + id;
var iframeHtml = ' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
if (window.ActiveXObject) {
if (typeof uri == 'boolean') {
iframeHtml += ' src="' + 'javascript:false' + '"';
}
else if (typeof uri == 'string') {
iframeHtml += ' src="' + uri + '"';
}
}
iframeHtml += ' />';
jQuery(iframeHtml).appendTo(document.body);
return jQuery('#' + frameId).get(0);
},
createUploadForm: function (id, fileElementId, data) {
//create form
var formId = 'jUploadForm' + id;
var fileId = 'jUploadFile' + id;
var form = jQuery(' + formId + '" enctype="multipart/form-data">');
var oldElement = jQuery('#' + fileElementId);
var newElement = jQuery(oldElement).clone();
jQuery(oldElement).attr('id', fileId);
jQuery(oldElement).before(newElement);
jQuery(oldElement).appendTo(form);
//添加参数支持
if (data) {
$.each(data, function (key, value) {
$("").appendTo(form);
})
}
//set attributes
jQuery(form).css('position', 'absolute');
jQuery(form).css('top', '-1200px');
jQuery(form).css('left', '-1200px');
jQuery(form).appendTo('body');
return form;
},
ajaxFileUpload: function (s) {
// TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
s = jQuery.extend({
}, jQuery.ajaxSettings, s);
var id = new Date().getTime()
var form = jQuery.createUploadForm(id, s.fileElementId, s.data);
var io = jQuery.createUploadIframe(id, s.secureuri);
var frameId = 'jUploadFrame' + id;
var formId = 'jUploadForm' + id;
// Watch for a new set of requests
if (s.global && !jQuery.active++) {
jQuery.event.trigger("ajaxStart");
}
var requestDone = false;
// Create the request object
var xml = {
}
if (s.global)
jQuery.event.trigger("ajaxSend", [xml, s]);
// Wait for a response to come back
var uploadCallback = function (isTimeout) {
var io = document.getElementById(frameId);
try {
if (io.contentWindow) {
xml.responseText = io.contentWindow.document.body ? io.contentWindow.document.body.innerHTML : null;
xml.responseXML = io.contentWindow.document.XMLDocument ? io.contentWindow.document.XMLDocument : io.contentWindow.document;
} else if (io.contentDocument) {
xml.responseText = io.contentDocument.document.body ? io.contentDocument.document.body.innerHTML : null;
xml.responseXML = io.contentDocument.document.XMLDocument ? io.contentDocument.document.XMLDocument : io.contentDocument.document;
}
} catch (e) {
jQuery.handleError(s, xml, null, e);
}
if (xml || isTimeout == "timeout") {
requestDone = true;
var status;
try {
status = isTimeout != "timeout" ? "success" : "error";
// Make sure that the request was successful or notmodified
if (status != "error") {
// process the data (runs the xml through httpData regardless of callback)
var data = jQuery.uploadHttpData(xml, s.dataType);
// If a local callback was specified, fire it and pass it the data
if (s.success)
s.success(data, status);
// Fire the global callback
if (s.global)
jQuery.event.trigger("ajaxSuccess", [xml, s]);
} else
jQuery.handleError(s, xml, status);
} catch (e) {
status = "error";
jQuery.handleError(s, xml, status, e);
}
// The request was completed
if (s.global)
jQuery.event.trigger("ajaxComplete", [xml, s]);
// Handle the global AJAX counter
if (s.global && !--jQuery.active)
jQuery.event.trigger("ajaxStop");
// Process result
if (s.complete)
s.complete(xml, status);
jQuery(io).unbind()
setTimeout(function () {
try {
jQuery(io).remove();
jQuery(form).remove();
} catch (e) {
jQuery.handleError(s, xml, null, e);
}
}, 100)
xml = null
}
}
// Timeout checker
if (s.timeout > 0) {
setTimeout(function () {
// Check to see if the request is still happening
if (!requestDone) uploadCallback("timeout");
}, s.timeout);
}
try {
var form = jQuery('#' + formId);
jQuery(form).attr('action', s.url);
jQuery(form).attr('method', 'POST');
jQuery(form).attr('target', frameId);
if (form.encoding) {
jQuery(form).attr('encoding', 'multipart/form-data');
}
else {
jQuery(form).attr('enctype', 'multipart/form-data');
}
jQuery(form).submit();
} catch (e) {
jQuery.handleError(s, xml, null, e);
}
jQuery('#' + frameId).load(uploadCallback);
return {
abort: function () {
}
};
},
uploadHttpData: function (r, type) {
var data = !type;
data = type == "xml" || data ? r.responseXML : r.responseText;
// If the type is "script", eval it in global context
if (type == "script")
jQuery.globalEval(data);
// Get the JavaScript object, if JSON is used.
if (type == "json")
eval("data = " + data);
// evaluate scripts within html
if (type == "html")
jQuery("").html(data).evalScripts();
return data;
},
handleError: function( s, xhr, status, e ) {
// If a local callback was specified, fire it
if ( s.error ) {
s.error.call( s.context || s, xhr, status, e );
}
// Fire the global callback
if ( s.global ) {
(s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] );
}
}
})