JQuery与springmvc实现多个文件上传操作

1. 导入JQuery相关JS文件

<script src="<@full_path path="js/jquery.js"/>" type="text/javascript"></script>

<script src="<@full_path path="js/ajaxfileupload.js"/>" type="text/javascript"></script>

这边ajaxfileupload.js有点特殊，请使用如下改造后的原文件内容：

jQuery.extend({

createUploadIframe: function(id, uri)
{
//create frame
var frameId = 'jUploadFrame' + id;
var iframeHtml = '<iframe id="' + frameId + '" name="' + 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('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
if (data) {
for ( var i in data) {
jQuery(
'<input type="hidden" name="' + i + '" value="'
+ data[i] + '" />').appendTo(form);
}
}
for (var i = 0; i < fileElementId.length; i ++) {
var oldElement = jQuery('#' + fileElementId[i]);
var newElement = jQuery(oldElement).clone();
jQuery(oldElement).attr('id', fileElementId[i]);
jQuery(oldElement).attr('name', fileElementId[i]);
jQuery(oldElement).before(newElement);
jQuery(oldElement).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, (typeof(s.data)=='undefined'?false: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 ) {
alert("type is " + type);
var data = !type;
alert("data1 is " + data);
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" ) {
alert("in json,data is " + data);
eval( "data = " + data );
}
// evaluate scripts within html
if ( type == "html" )
jQuery("<div>").html(data).evalScripts();

return data;
}
})

2. 相关页面调用例子。(需引入相关JS)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>导入数据应用</title>
<#include "/views/head.html"/>

<script>
function test() {
var baseUrl = "<@full_path path="/"/>";
var arrId = [];
arrId[0] = "appExcel";
arrId[1] = "zipFile";
alert("arrId[0] is " + arrId[0] + ",arrId[1] is " + arrId[1]);
$.ajaxFileUpload
(
{
url:baseUrl + 'app/test', //你处理上传文件的服务端
secureuri:false,
fileElementId:arrId,
dataType: 'json',
success: function (data, status)
{
alert("is success. status is " + status);
alert("in success data is " + data.desc);
},
error: function (data, status, e)
{
alert("is error. status is " + status + ",and e is " + e);
}
}
);

}

function commitInput(){
var zipFile = document.getElementById("zipFile");
var appExcel = document.getElementById("appExcel");
var zipValue=zipFile.value;
var appExcelValue=appExcel.value;
var zipflag=false;
var appExcelflag=false;
var zipCheck = document.getElementById("zip");
if(appExcelValue != "" && appExcelValue != null){
var format = appExcelValue.substr(appExcelValue.lastIndexOf("."));
if(format==".xls" || format==".csv" || format == ".xlsx"){
document.getElementById("appExcelInfo").innerHTML="";
appExcelflag=true;

}else{
document.getElementById("appExcelInfo").innerHTML="上传的格式不对";
}
}
if(zipCheck.checked==true){

if(zipValue != "" && zipValue != null){
if(zipValue.substr(zipValue.lastIndexOf("."))==".zip"){
document.getElementById("zipInfo").innerHTML="";
zipflag=true;
}else{
document.getElementById("zipInfo").innerHTML="上传的格式不对";
}
}
if(zipflag&&appExcelflag){
//$.jBox.close(true);
//window.parent.closeBatchApp();
setTimeout("window.parent.closeBatchApp()",100);
}
return zipflag&&appExcelflag;
}
if(appExcelflag){
setTimeout("window.parent.closeBatchApp()",100);
//window.parent.closeBatchApp();
//return true;
}
//window.parent.closeBatchApp();
alert(appExcelflag);
return appExcelflag;
}

function showZip(){
var zipDiv = document.getElementById("showZipInput");
var zipCheck = document.getElementById("zip");
var isUploadIconValue = document.getElementById("isUploadIcon");
if(zipCheck.checked==true){
zipDiv.style.display="block";
isUploadIconValue.value="true";
}else{
zipDiv.style.display="none";
isUploadIconValue.value="false";
}
}
</script>
</head>

<body style="font-size:12px;">
<form method="post" name="listForm" id="listForm" action="<@full_path path='app/batchImportApps'/>" enctype="multipart/form-data" onsubmit="return commitInput();"> <#--onclick="return commitInput();"-->
<div style="margin-left:10%; margin-top:20%;">
<table>
<tr><td align="right"><b style="font-size:14px;">csv或xls的文件:</b><input type="file" id="appExcel" name="appExcel"/><span id="appExcelInfo" style="color:red"></span><input type="checkbox" id="zip" onclick = "showZip();" /><label for="zip"><b style="font-size:14px;">上传zip文件</b></label></td></tr>
<tr><td aling="center" ><div style="display:none;margin-left:11%;" id="showZipInput"><b style="font-size:14px;">zip文件:</b><input type="file" id="zipFile" name="zipFile"/><span id="zipInfo" style="color:red"></span></div></td></tr>
<tr><td colspan=2 align="center"><input type="hidden" id="isUploadIcon" name="isUploadIcon" value="false"></td></tr>
</table>
</div>
<div style="margin-left:33%;">
<input type="submit" value="确认上传" />
<input type="button" value="test" onclick="test()"/>
<input type="reset" value="重置"/>
</div>
</form>
</body>
</html>

3。 后台相关JAVA代码

@RequestMapping(value = "/test", method = RequestMethod.POST)
public void test(MultipartHttpServletRequest multipartRequest,HttpServletResponse response,HttpServletRequest request) {

System.err.println("1234");
InputStream appExcelStream = null;

try {
for (Iterator it = multipartRequest.getFileNames(); it.hasNext();) {
String key = (String) it.next();
MultipartFile imgFile = multipartRequest.getFile(key);
if (imgFile.getOriginalFilename().length() > 0) {
String fileName = imgFile.getOriginalFilename();
System.err.println("filename is " + fileName);
OutputStream out = new FileOutputStream(new File("d://" + fileName));
out.write(imgFile.getBytes());
out.close();
}
}

response.setContentType("text/html;charset=UTF-8");
PrintWriter out1 = response.getWriter();
FileUploadResp res = new FileUploadResp();
res.setResult(0);
res.setDesc("success.");
out1.write(JSONObject.fromObject(res).toString());
} catch (IOException e) {
log.error("in batchImportApps,inputstream is null.");
}
}

public static class FileUploadResp {

private int result;
private String desc;
public int getResult() {
return result;
}
public void setResult(int result) {
this.result = result;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}

}

另：请注意，以上方法在同一个域项目中才可以正常使用。如果页面是通过部署在两个项目并且分属不同域中的话，则无法正常使用AJAX实现的。