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fmms
13年前发布

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:

JQuery Uploadify 基于JSP的无刷新上传实例

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
<%@ 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>    <!--装载文件-->  <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',//后台处理的请求     'cancelImg' : 'images/cancel.png',     'folder' : 'uploads',//您想将文件保存到的路径     'queueID' : 'fileQueue',//与下面的id对应     'queueSizeLimit' : 5,     'fileDesc' : 'rar文件或zip文件',     '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     '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()">开始上传</a>&nbsp;    <a href="javascript:jQuery('#uploadify').uploadifyClearQueue()">取消所有上传</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.java
package 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;                    }                    //扩展名格式:                     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);        }    }
转自:http://blog.csdn.net/huxiweng/article/details/7272338

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文件上传 jQuery