JQuery Uploadify 基于JSP的無刷新上傳實例
項目需要實現一個無刷新批量文件上傳功能，仔細研究了下，發現JQuery 提供的Uploadify插件十分不錯，不過官方的實例是基于php的，下面我用jsp+servlet簡單實現了這個功能，廢話少說，先看效果圖：
1、初始化頁面：
2、選擇多個文件（可一次多選）后：
3、點擊開始上傳（上傳完就自動消失）
效果就是上面那樣，頁面不刷新。下面上代碼：
1、首先先到官網下載最新的zip壓縮包http://www.uploadify.com
2、項目結構：
3、關鍵代碼：
index.jsp<%@ page language="java" contentType="text/html; charset=utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>Upload</title>
<!--裝載文件-->
<link href="css/default.css" rel="stylesheet" type="text/css" />
<link href="css/uploadify.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="scripts/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="scripts/swfobject.js"></script>
<script type="text/javascript" src="scripts/jquery.uploadify.v2.1.4.min.js"></script>
<!--ready事件-->
<script type="text/javascript">
$(document).ready(function() {
$("#uploadify").uploadify({
'uploader' : 'scripts/uploadify.swf',
'script' : 'servlet/Upload',//后臺處理的請求
'cancelImg' : 'images/cancel.png',
'folder' : 'uploads',//您想將文件保存到的路徑
'queueID' : 'fileQueue',//與下面的id對應
'queueSizeLimit' : 5,
'fileDesc' : 'rar文件或zip文件',
'fileExt' : '*.rar;*.zip', //控制可上傳文件的擴展名，啟用本項時需同時聲明fileDesc
'auto' : false,
'multi' : true,
'simUploadLimit' : 2,
'buttonText' : 'BROWSE'
});
});
</script>
</head>
<body>
<div id="fileQueue"></div>
<input type="file" name="uploadify" id="uploadify" />
<p>
<a href="javascript:jQuery('#uploadify').uploadifyUpload()">開始上傳</a>
<a href="javascript:jQuery('#uploadify').uploadifyClearQueue()">取消所有上傳</a>
</p>
</body>
</html> web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>upload</servlet-name>
<servlet-class>com.xzit.upload.Upload</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>upload</servlet-name>
<url-pattern>/servlet/Upload</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>Upload.javapackage com.xzit.upload;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
@SuppressWarnings("serial")
public class Upload extends HttpServlet {
@SuppressWarnings("unchecked")
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String savePath = this.getServletConfig().getServletContext()
.getRealPath("");
savePath = savePath + "/uploads/";
File f1 = new File(savePath);
System.out.println(savePath);
if (!f1.exists()) {
f1.mkdirs();
}
DiskFileItemFactory fac = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(fac);
upload.setHeaderEncoding("utf-8");
List fileList = null;
try {
fileList = upload.parseRequest(request);
} catch (FileUploadException ex) {
return;
}
Iterator<FileItem> it = fileList.iterator();
String name = "";
String extName = "";
while (it.hasNext()) {
FileItem item = it.next();
if (!item.isFormField()) {
name = item.getName();
long size = item.getSize();
String type = item.getContentType();
System.out.println(size + " " + type);
if (name == null || name.trim().equals("")) {
continue;
}
//擴展名格式：
if (name.lastIndexOf(".") >= 0) {
extName = name.substring(name.lastIndexOf("."));
}
File file = null;
do {
//生成文件名：
name = UUID.randomUUID().toString();
file = new File(savePath + name + extName);
} while (file.exists());
File saveFile = new File(savePath + name + extName);
try {
item.write(saveFile);
} catch (Exception e) {
e.printStackTrace();
}
}
}
response.getWriter().print(name + extName);
}
}轉自：http://blog.csdn.net/huxiweng/article/details/7272338 本文由用戶 fmms 自行上傳分享，僅供網友學習交流。所有權歸原作者，若您的權利被侵害，請聯系管理員。
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