jsp+servlet+jquery 用jquery uploadify最新版本实现多文件上传

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//这是script代码
        <link rel="stylesheet" type="text/css" href="uploadify/uploadify.css">
        <script type="text/javascript" src="jquery-1.8.0.js"></script>
        <script type="text/javascript" src="uploadify/jquery.uploadify.min.js"></script>
        <script>
    $(document).ready(function() {
        $('#file_upload').uploadify( {
            'debug':'true',
            'swf' : 'uploadify/uploadify.swf',//上传按钮的图片，默认是这个flash文件
            'uploader' : 'LoginServlet',//上传所处理的服务器
            'cancelImg' : 'uploadfiy/uploadify-cancel.png',//取消图片
            'method':'post',
            'folder' : '/UploadFile',//上传后，所保存文件的路径
            'queueID' : 'fileQueue',//上传显示进度条的那个div
            'buttonText' : '请选择文件',
            //'onUploadComplete': function(file){alert('The file'+file.name+'finished processing!')},//每个文件上传成功后的函数
            progressData : 'percentage',
            'auto' : false,
            'multi' : true,
            //'onSelect':function(file){
            //alert("文件"+file.name+"被选择了！");
            //}
            //'onQueueComplete' : function(queueData) {
            //    alert(queueData.filesQueued + 'files were successfully!')
            //},//当队列中的所有文件上传成功后，弹出共有多少个文件上传成功
            'onDisable' : function() {
                alert('uploadify is disable');
            },//在调用disable方法时候触发
            //'onCancel':function(){alert('你取消了文件上传')}
            //'onUploadStart' : function(file) {//在调用上传前触发
            //alert('The file ' + file.name + ' is being uploaded.')}
            'onError' : function(errorType,errObj) {
                alert('The error was: ' + errObj.info)
            }

        });
    });

</script>

//这是表单元素
<div id="fileQueue"></div>
        <input id="file_upload" name="file_upload" type="file" multiple="true">
        <p>
            <!-- 加上“*”表示当第一个文件上传成功后，立即上传以后队列中的文件，否则需要自己手动 -->
            <a href="javascript:$('#file_upload').uploadify('upload','*')">上传</a>|
            <a
                href="javascript:$('#file_upload').uploadify('cancel',$('.uploadifive-queue-item').first().data('file'))">取消上传</a>
            <a href="javascript:$('#file_upload').uploadify('cancel','*')">清空所有的上传文件</a>
            <a href="javascript:$('#file_upload').uploadify('stop','*')">暂停</a>
            <!-- 如果填入true则表示禁用上传按钮 -->
            <a href="javascript:$('#file_upload').uploadify('disable','true')">禁用</a>
            <a href="javascript:$('#file_upload').uploadify('debug')">调试</a>
        </p>

后台servlet
package com.accp.upload;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.disk.DiskFileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.util.Streams;

public class LoginServlet extends HttpServlet {

    /**
     * The doGet method of the servlet. <br>
     * 
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request
     *            the request send by the client to the server
     * @param response
     *            the response send by the server to the client
     * @throws ServletException
     *             if an error occurred
     * @throws IOException
     *             if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html;charset=utf-8;");
        doPost(request, response);
    }

    /**
     * The doPost method of the servlet. <br>
     * 
     * This method is called when a form has its tag value method equals to
     * post.
     * 
     * @param request
     *            the request send by the client to the server
     * @param response
     *            the response send by the server to the client
     * @throws ServletException
     *             if an error occurred
     * @throws IOException
     *             if an error occurred
     */
    @SuppressWarnings("unchecked")
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html;charset=utf-8;");
        request.setCharacterEncoding("utf-8");
        PrintWriter out = response.getWriter();
        // 设置接收的编码格式
        request.setCharacterEncoding("UTF-8");
        Date date = new Date();// 获取当前时间
        SimpleDateFormat sdfFileName = new SimpleDateFormat("yyyyMMddHHmmss");
        SimpleDateFormat sdfFolder = new SimpleDateFormat("yyMM");
        String newfileName = sdfFileName.format(date);// 文件名称
        String fileRealPath = "";// 文件存放真实地址

        String fileRealResistPath = "";// 文件存放真实相对路径

        // 名称 界面编码 必须 和request 保存一致..否则乱码
        String name = request.getParameter("name");

        String firstFileName = "";
        // 获得容器中上传文件夹所在的物理路径
        String savePath = this.getServletConfig().getServletContext()
                .getRealPath("/")
                + "uploads\\" + newfileName + "\\";
        System.out.println("路径" + savePath + "; name:" + name);
        File file = new File(savePath);
        if (!file.isDirectory()) {
            file.mkdirs();
        }

        try {
            DiskFileItemFactory fac = new DiskFileItemFactory();
            ServletFileUpload upload = new ServletFileUpload(fac);
            upload.setHeaderEncoding("UTF-8");
            // 获取多个上传文件
            List fileList = fileList = upload.parseRequest(request);
            // 遍历上传文件写入磁盘
            Iterator it = fileList.iterator();
            while (it.hasNext()) {
                Object obit = it.next();
                if (obit instanceof DiskFileItem) {
                    System.out.println("xxxxxxxxxxxxx");
                    DiskFileItem item = (DiskFileItem) obit;

                    // 如果item是文件上传表单域
                    // 获得文件名及路径
                    String fileName = item.getName();
                    if (fileName != null) {
                        firstFileName = item.getName().substring(
                                item.getName().lastIndexOf("\\") + 1);
                        String formatName = firstFileName
                                .substring(firstFileName.lastIndexOf("."));// 获取文件后缀名
                        fileRealPath = savePath + newfileName + formatName;// 文件存放真实地址

                        BufferedInputStream in = new BufferedInputStream(item
                                .getInputStream());// 获得文件输入流
                        BufferedOutputStream outStream = new BufferedOutputStream(
                                new FileOutputStream(new File(fileRealPath)));// 获得文件输出流
                        Streams.copy(in, outStream, true);// 开始把文件写到你指定的上传文件夹
                        // 上传成功，则插入数据库
                        if (new File(fileRealPath).exists()) {
                            // 虚拟路径赋值
                            fileRealResistPath = sdfFolder.format(date)
                                    + "/"
                                    + fileRealPath.substring(fileRealPath
                                            .lastIndexOf("\\") + 1);
                            // 保存到数据库
                            System.out.println("保存到数据库:");
                            System.out.println("name:" + name);
                            System.out.println("虚拟路径:" + fileRealResistPath);
                        }

                    }
                }
            }
        } catch (org.apache.commons.fileupload.FileUploadException ex) {
            ex.printStackTrace();
            System.out.println("没有上传文件");
            return;
        }
        response.getWriter().write("1");
        out.flush();
        out.close();

    }

}

转载于:https://my.oschina.net/kkrgwbj/blog/212287