1.js文件
// JavaScript Document
jQuery.extend({ createUploadIframe: function(id, uri)
{
//create frame
var frameId = 'jUploadFrame' + id; if(window.ActiveXObject) {
var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
if(typeof uri== 'boolean'){
io.src = 'javascript:false';
}
else if(typeof uri== 'string'){
io.src = uri;
}
}
else {
var io = document.createElement('iframe');
io.id = frameId;
io.name = frameId;
}
io.style.position = 'absolute';
io.style.top = '-1000px';
io.style.left = '-1000px'; document.body.appendChild(io); return io;
},
createUploadForm: function(id, fileElementId, data)
{
//create form
var formId = 'jUploadForm' + id;
var fileId = 'jUploadFile' + id;
var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
var oldElement = jQuery('#' + fileElementId);
var newElement = jQuery(oldElement).clone();
jQuery(oldElement).attr('id', fileId);
jQuery(oldElement).before(newElement);
jQuery(oldElement).appendTo(form); //添加文本參数的支持
if (data) {
for (var i in data) {
//alert(data[i]);
$('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').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) {
//alert("fuck"+s.data);
// TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
s = jQuery.extend({}, jQuery.ajaxSettings, s);
var id = s.fileElementId;
var form = jQuery.createUploadForm(id, s.fileElementId,s.data);
var io = jQuery.createUploadIframe(id, s.secureuri);
var frameId = 'jUploadFrame' + id;
var formId = 'jUploadForm' + id; if( s.global && ! jQuery.active++ )
{
// Watch for a new set of requests
jQuery.event.trigger( "ajaxStart" );
}
var requestDone = false;
// Create the request object
var xml = {};
if( s.global )
{
jQuery.event.trigger("ajaxSend", [xml, s]);
} var uploadCallback = function(isTimeout)
{
// Wait for a response to come back
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( s.success )
{
// ifa local callback was specified, fire it and pass it the data
s.success( data, status );
};
if( s.global )
{
// Fire the global callback
jQuery.event.trigger( "ajaxSuccess", [xml, s] );
};
} else
{
jQuery.handleError(s, xml, status);
} } catch(e)
{
status = "error";
jQuery.handleError(s, xml, status, e);
};
if( s.global )
{
// The request was completed
jQuery.event.trigger( "ajaxComplete", [xml, s] );
}; // Handle the global AJAX counter
if(s.global && ! --jQuery.active)
{
jQuery.event.trigger("ajaxStop");
};
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(){ if( !requestDone )
{
// Check to see ifthe request is still happening
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)
{
form.encoding = 'multipart/form-data';
}
else
{
form.enctype = 'multipart/form-data';
}
jQuery(form).submit(); } catch(e)
{
jQuery.handleError(s, xml, null, e);
}
if(window.attachEvent){
document.getElementById(frameId).attachEvent('onload', uploadCallback);
}
else{
document.getElementById(frameId).addEventListener('load', uploadCallback, false);
}
return {abort: function () {}}; }, uploadHttpData: function( r, type ) {
var data = !type;
data = type == "xml" || data ? r.responseXML : r.responseText;
// ifthe type is "script", eval it in global context
if( type == "script" )
{
jQuery.globalEval( data );
} // Get the JavaScript object, ifJSON is used.
if( type == "json" )
{
eval( "data = " + data );
} // evaluate scripts within html
if( type == "html" )
{
jQuery("<div>").html(data).evalScripts();
} return data;
}
});
2.struts.xml配置：
<result name="test" type="json">
<param name="contentType">text/html</param>
<param name="includeProperties">param.*</param>
</result>
3.前台使用方式：
</pre><pre name="code" class="html">
<s:file id="file" name="file" label="零部件信息"></s:file>
$.ajaxFileUpload
(
{ url: url, //用于文件上传的server端请求地址
secureuri: false, //是否须要安全协议，一般设置为false
fileElementId: 'file', //文件上传域的ID
dataType: 'json', //返回值类型 一般设置为json
data:{test1:"1",test2:"2"},//附加參数，json格式
success: function (data, status) //server成功响应处理函数
{
//alert("success");
},
error: function (data, status, e)//server响应失败处理函数
{
alert(e);
}
}
)