JQuery Uploadify 基于JSP的无刷新上传实例

项目需要实现一个无刷新批量文件上传功能，仔细研究了下，发现JQuery 提供的Uploadify插件十分不错，不过官方的实例是基于php的，下面我用jsp+servlet简单实现了这个功能，废话少说，先看效果图：

1、初始化页面：

2、选择多个文件（可一次多选）后：

JQuery Uploadify 基于JSP的无刷新上传实例

3、点击开始上传（上传完就自动消失）

JQuery Uploadify 基于JSP的无刷新上传实例

效果就是上面那样，页面不刷新。下面上代码：

1、首先先到官网下载最新的zip压缩包http://www.uploadify.com

2、项目结构：

JQuery Uploadify 基于JSP的无刷新上传实例

3、关键代码：

index.jsp

01

<%@
page language="java" contentType="text/html; charset=utf-8"%>

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<%

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String
path = request.getContextPath();

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String
basePath = request.getScheme() + "://"

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+
request.getServerName() + ":" + request.getServerPort()

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+
path + "/";

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%>

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<!DOCTYPE
HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

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<html>

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<head>

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<basehref="<%=basePath%>">

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<title>Upload</title>

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<!--装载文件-->

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<linkhref="css/default.css"rel="stylesheet"type="text/css"/>

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<linkhref="css/uploadify.css"rel="stylesheet"type="text/css"/>

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<scripttype="text/javascript"src="scripts/jquery-1.4.2.min.js"></script>

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<scripttype="text/javascript"src="scripts/swfobject.js"></script>

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<scripttype="text/javascript"src="scripts/jquery.uploadify.v2.1.4.min.js"></script>

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<!--ready事件-->

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<scripttype="text/javascript">

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$(document).ready(function()
{

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$("#uploadify").uploadify({

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'uploader'
: 'scripts/uploadify.swf',

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'script'
: 'servlet/Upload',//后台处理的请求

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'cancelImg'
: 'images/cancel.png',

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'folder'
: 'uploads',//您想将文件保存到的路径

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'queueID'
: 'fileQueue',//与下面的id对应

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'queueSizeLimit'
: 5,

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'fileDesc'
: 'rar文件或zip文件',

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'fileExt'
: '*.rar;*.zip', //控制可上传文件的扩展名，启用本项时需同时声明fileDesc

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'auto'
: false,

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'multi'
: true,

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'simUploadLimit'
: 2,

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'buttonText'
: 'BROWSE'

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});

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});

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</script>

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</head>

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<body>

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<divid="fileQueue"></div>

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<inputtype="file"name="uploadify"id="uploadify"/>

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<p>

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<ahref="javascript:jQuery('#uploadify').uploadifyUpload()">开始上传</a>&nbsp;

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<ahref="javascript:jQuery('#uploadify').uploadifyClearQueue()">取消所有上传</a>

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</p>

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</body>

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</html>

web.xml

01

<?xmlversion="1.0"encoding="UTF-8"?>

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<web-appversion="2.4"

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xmlns="http://java.sun.com/xml/ns/j2ee"

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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

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xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

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http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

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<servlet>

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<servlet-name>upload</servlet-name>

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<servlet-class>com.xzit.upload.Upload</servlet-class>

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</servlet>

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<servlet-mapping>

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<servlet-name>upload</servlet-name>

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<url-pattern>/servlet/Upload</url-pattern>

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</servlet-mapping>

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<welcome-file-list>

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<welcome-file>index.jsp</welcome-file>

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</welcome-file-list>

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</web-app>

Upload.java

001

packagecom.xzit.upload;

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importjava.io.File;

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importjava.io.IOException;

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007

importjava.util.Iterator;

008

009

importjava.util.List;

010

011

importjava.util.UUID;

012

013

014

015

importjavax.servlet.ServletException;

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importjavax.servlet.http.HttpServlet;

018

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importjavax.servlet.http.HttpServletRequest;

020

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importjavax.servlet.http.HttpServletResponse;

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024

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importorg.apache.commons.fileupload.FileItem;

026

027

importorg.apache.commons.fileupload.FileUploadException;

028

029

importorg.apache.commons.fileupload.disk.DiskFileItemFactory;

030

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importorg.apache.commons.fileupload.servlet.ServletFileUpload;

032

033

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@SuppressWarnings("serial")

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publicclassUploadextendsHttpServlet
{

038

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@SuppressWarnings("unchecked")

040

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publicvoiddoPost(HttpServletRequest
request, HttpServletResponse response)

042

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throwsServletException,
IOException {

044

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String
savePath =this.getServletConfig().getServletContext()

046

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.getRealPath("");

048

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savePath
= savePath +"/uploads/";

050

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File
f1 =newFile(savePath);

052

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System.out.println(savePath);

054

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if(!f1.exists())
{

056

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f1.mkdirs();

058

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}

060

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DiskFileItemFactory
fac =newDiskFileItemFactory();

062

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ServletFileUpload
upload =newServletFileUpload(fac);

064

065

upload.setHeaderEncoding("utf-8");

066

067

List
fileList =null;

068

069

try{

070

071

fileList
= upload.parseRequest(request);

072

073

}catch(FileUploadException
ex) {

074

075

return;

076

077

}

078

079

Iterator<FileItem>
it = fileList.iterator();

080

081

String
name ="";

082

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String
extName ="";

084

085

while(it.hasNext())
{

086

087

FileItem
item = it.next();

088

089

if(!item.isFormField())
{

090

091

name
= item.getName();

092

093

longsize
= item.getSize();

094

095

String
type = item.getContentType();

096

097

System.out.println(size
+"
"+
type);

098

099

if(name
==null||
name.trim().equals(""))
{

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continue;

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}

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//扩展名格式：

106

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if(name.lastIndexOf(".")
>=0)
{

108

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extName
= name.substring(name.lastIndexOf("."));

110

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}

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File
file =null;

114

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do{

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//生成文件名：

118

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name
= UUID.randomUUID().toString();

120

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file
=newFile(savePath
+ name + extName);

122

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}while(file.exists());

124

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File
saveFile =newFile(savePath
+ name + extName);

126

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try{

128

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item.write(saveFile);

130

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}catch(Exception
e) {

132

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e.printStackTrace();

134

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}

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}

138

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}

140

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response.getWriter().print(name
+ extName);

142

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}

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}