webuploader用 servlet转发给jsp,jsp页面收不到呢?

图片说明
这是servlet 代码

 package com.servlet;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
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.FileUploadBase.SizeLimitExceededException;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;


public class UploadServlet extends HttpServlet {
        @SuppressWarnings({ "rawtypes", "null" })
        public void service(HttpServletRequest request, HttpServletResponse response)
                throws ServletException, IOException {
            PrintWriter out=response.getWriter();
            try{
            final long MAX_SIZE = 3* 1024 * 1024;// 设置上传文件最大为 3M
            // 允许上传的文件格式的列表
            final String[] allowedExt = new String[] {"jpg","jpeg","gif"};
            response.setContentType("text/html");
            // 实例化一个硬盘文件工厂,用来配置上传组件ServletFileUpload
            DiskFileItemFactory dfif = new DiskFileItemFactory();
            dfif.setSizeThreshold(4096);// 设置上传文件时用于临时存放文件的内存大小,这里是4K.多于的部分将临时存在硬盘
            dfif.setRepository(new File(request.getRealPath("/")+ "upload"));// 设置存放临时文件的目录,web根目录下的upload目录
            System.out.println("临时目录:"+new File(request.getRealPath("/")+ "upload"));
            // 用以上工厂实例化上传组件
            ServletFileUpload sfu = new ServletFileUpload(dfif);
            // 设置最大上传尺寸
            sfu.setSizeMax(MAX_SIZE);
            // 从request得到 所有 上传域的列表
            List fileList = null;
            try {
                fileList = sfu.parseRequest(request);   
            } catch (FileUploadException e) {// 处理文件尺寸过大异常
                if (e instanceof SizeLimitExceededException) {
                    out.println("文件尺寸超过规定大小:" + MAX_SIZE + "字节!");
                    return;
                }
                e.printStackTrace();
            }
            // 没有文件上传
            if (fileList == null || fileList.size() == 0) {
                out.println("请选择上传文件!");
                return;
            }
            // 得到所有上传的文件
            Iterator fileItr = fileList.iterator();
            System.out.println("fileList:"+fileList);
            // 循环处理所有文件 

            while (fileItr.hasNext()) {
                FileItem fileItem = null;
                String path = null;
                long size = 0;
                // 得到当前文件
                fileItem = (FileItem) fileItr.next();
                // 忽略简单form字段而不是上传域的文件域(<input type="text" />等)
                if (fileItem == null || fileItem.isFormField()) {
                    continue;
                }
                // 得到文件的完整路径
                path = fileItem.getName();
                // 得到文件的大小
                size = fileItem.getSize();
                if ("".equals(path) || size == 0) {
                    out.println("请选择上传文件!");
                    return;
                }
                // 得到去除路径的文件名
                String t_name = path.substring(path.lastIndexOf("//") + 1);//kaola.jpeg
                System.out.println("t_name:"+t_name);
                // 得到文件的扩展名(无扩展名时将得到全名)
                String t_ext = t_name.substring(t_name.lastIndexOf(".") + 1);//jpeg
                System.out.println(t_ext);
                // 拒绝接受规定文件格式之外的文件类型
                 String tmp=Arrays.toString(allowedExt);
                 Pattern p = Pattern.compile(t_ext);  
                 Matcher m = p.matcher(tmp); 
                 if (m.find()==true) {
                    //如果符合上传的格式
                        String now=new SimpleDateFormat("yyyyMMddhhmmssSSS").format(new Date());
                        System.out.println(now);
                        // 根据系统时间生成上传后保存的文件名
                        String prefix = now;
                        // 保存的最终文件完整路径,保存在web根目录下的upload目录下
                        String u_name = request.getRealPath("/") + "upload/"
                                + prefix + "." + t_ext;
                        String dwc;
                        dwc=u_name;

                     **  //转发给jsp页面
                        request.setAttribute("dwc",dwc);                                                   

                        request.getRequestDispatcher( "/files1/xinzengchandizhengmingg**uanli.jsp").forward(request,response); 


                        System.out.println("最终保存目录:"+u_name);
                        try {
                            File file = new File(u_name);
                            // 保存文件
                            fileItem.write(file);
                            out.println("文件上传成功. 已保存为: " + prefix + "." + t_ext
                                    + " &nbsp;&nbsp;文件大小: " + size + "字节<p />");                                    
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                }else {
                    System.out.println("不符合规定");
                    out.print("上传文件不符合规定!");
                }
            }
            }catch(Exception e){
                out.print("系统异常,请稍后再试!");
                e.printStackTrace();
            }
        }             
    }

** //转发给jsp页面
request.setAttribute("dwc",dwc);

                    request.getRequestDispatcher( "/files1/xinzengchandizhengmingg**uanli

这也我想把上传成功的文件名传给jsp页面,然后添加到数据库,,试了好多方法,传不去过去值。

6个回答

jsp页面代码 特别长

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!--_meta 作为公共模版分离出去-->
<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8">
    <meta name="renderer" content="webkit|ie-comp|ie-stand">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" />
    <meta http-equiv="Cache-Control" content="no-siteapp" />
    <link rel="Bookmark" href="<%=basePath %>favicon.ico" >
    <link rel="Shortcut Icon" href="<%=basePath %>favicon.ico" />
    <!--[if lt IE 9]>
    <script type="text/javascript" src="<%=basePath %>lib/html5.js"></script>
    <script type="text/javascript" src="<%=basePath %>lib/respond.min.js"></script>
    <![endif]-->
    <link rel="stylesheet" type="text/css" href="<%=basePath %>static/h-ui/css/H-ui.min.css" />
    <link rel="stylesheet" type="text/css" href="<%=basePath %>static/h-ui.admin/css/H-ui.admin.css" />
    <link rel="stylesheet" type="text/css" href="<%=basePath %>lib/Hui-iconfont/1.0.8/iconfont.css" />

    <link rel="stylesheet" type="text/css" href="<%=basePath %>static/h-ui.admin/skin/default/skin.css" id="skin" />
    <link rel="stylesheet" type="text/css" href="<%=basePath %>static/h-ui.admin/css/style.css" />
    <!--[if IE 6]>
    <script type="text/javascript" src="http://lib.h-ui.net/DD_belatedPNG_0.0.8a-min.js" ></script>
    <script>DD_belatedPNG.fix('*');</script><![endif]-->
    <!--/meta 作为公共模版分离出去-->

    <title>新增产品认证管理</title>
    <link href="<%=basePath %>lib/webuploader/0.1.5/webuploader.css" rel="stylesheet" type="text/css" />
    <script src="<%=basePath %>My97DatePicker/WdatePicker.js"></script>
</head>
<body>
<div class="page-container">
    <form class="form form-horizontal" id="form-article-add" action="<%=basePath %>prove_origin/add.action" method="post">
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>编号:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.number">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>发证日期:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" id="" name="p.certificate_time" onclick="WdatePicker()" placeholder="YYYY-MM-DD">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>产地编号:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.origin_num">
            </div>
        </div>
        <!-- <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>产地(乡、村):</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.origin">
            </div>
        </div> -->
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>产地(乡、村):</label>
            <div class="formControls col-xs-8 col-sm-9"> <span class="select-box">
                <select name="" class="select">
                    <option value="0">项目</option>
                    <option value="1">人手</option>
                    <option value="2">原料挑选台</option>
                    <option value="3">切割机</option>
                    <option value="4">脱水机</option>
                    <option value="4">干燥机</option>
                    <option value="4">分选机</option>

                </select>
                </span> </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>生产者:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.producers">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>产品名称:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.product_name">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>数量(吨):</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.quantity">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>收获日期:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" id="" name="p.gain_time" onclick="WdatePicker()" placeholder="YYYY-MM-DD">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>质量检测类型:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.detection_type">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>质量检测结果:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.detection_result">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>运销商:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.marketing_agency">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>电话:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.tel">
            </div>
        </div>
        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2"><span class="c-red">*</span>经办人:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <input type="text" class="input-text" value="" placeholder="" id="" name="p.agent">
            </div>
        </div>

<!--测试接收到servlet传值显示在text框中-->
<input type="text" class="input-text" value='${dwc}' placeholder="" id="" name="">

        <div class="row cl">
            <label class="form-label col-xs-4 col-sm-2">图片上传:</label>
            <div class="formControls col-xs-8 col-sm-9">
                <div class="uploader-list-container">
                    <div class="queueList">
                        <div id="dndArea" class="placeholder">
                            <div id="filePicker-2"></div>
                            <p>或将照片拖到这里,单次最多可选300张</p>
                        </div>
                    </div>
                    <div class="statusBar" style="display:none;">
                        <div class="progress"> <span class="text">0%</span> <span class="percentage"></span> </div>
                        <div class="info"></div>
                        <div class="btns">
                            <div id="filePicker2"></div>
                            <div class="uploadBtn">开始上传</div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <div class="row cl">
            <div class="col-xs-8 col-sm-9 col-xs-offset-4 col-sm-offset-2">
                <button class="btn btn-primary radius" type="submit"><i class="Hui-iconfont">&#xe632;</i> 保存</button>
                <a href="<%=basePath %>prove_origin/showall.action" target="mainFrame"><button class="btn btn-default radius" type="button">&nbsp;&nbsp;取消&nbsp;&nbsp;</button></a>
            </div>
        </div>
    </form>
</div>

<!--_footer 作为公共模版分离出去-->
<script type="text/javascript" src="<%=basePath %>lib/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="<%=basePath %>lib/layer/2.4/layer.js"></script>
<script type="text/javascript" src="<%=basePath %>lib/webuploader/0.1.5/webuploader.min.js"></script>  
 <script type="text/javascript" src="<%=basePath %>lib/bootstrap-3.3.5-dist/js/bootstrap.min.js"></script> 

<script type="text/javascript" src="<%=basePath %>lib/jquery.validation/1.14.0/jquery.validate.js"></script>
<script type="text/javascript" src="<%=basePath %>lib/jquery.validation/1.14.0/validate-methods.js"></script>
<script type="text/javascript" src="<%=basePath %>lib/jquery.validation/1.14.0/messages_zh.js"></script>
<script type="text/javascript" src="<%=basePath %>static/h-ui/js/H-ui.js"></script>
<script type="text/javascript" src="<%=basePath %>static/h-ui.admin/js/H-ui.admin.page.js"></script></span>

<!--/_footer /作为公共模版分离出去-->

<!--请在下方写此页面业务相关的脚本-->
<script type="text/javascript" src="<%=basePath %>lib/webuploader/0.1.5/webuploader.min.js"></script>
<script type="text/javascript">
    $(function(){
        $('.skin-minimal input').iCheck({
            checkboxClass: 'icheckbox-blue',
            radioClass: 'iradio-blue',
            increaseArea: '20%'
        });

        $list = $("#fileList"),
                $btn = $("#btn-star"),
                state = "pending",
                uploader;

        var uploader = WebUploader.create({
            auto: true,
            swf: 'lib/webuploader/0.1.5/Uploader.swf',

            // 文件接收服务端。
            server: 'http://localhost:8080/Tjzhuisu/uploadServlet',

            // 选择文件的按钮。可选。
            // 内部根据当前运行是创建,可能是input元素,也可能是flash.
            pick: '#filePicker',

            // 不压缩image, 默认如果是jpeg,文件上传前会压缩一把再上传!
            resize: false,
            // 只允许选择图片文件。
            accept: {
                title: 'Images',
                extensions: 'gif,jpg,jpeg,bmp,png',
                mimeTypes: 'image/*'
            }
        });
        ////////////////////////////////////////////



        ///////////////////////////////////////////
         // 当有文件添加进来的时候
        uploader.on( 'fileQueued', function( file ) {
            var $li = $(
                            '<div id="' + file.id + '" class="item">' +
                            '<div class="pic-box"><img></div>'+
                            '<div class="info">' + file.name + '</div>' +
                            '<p class="state">等待上传...</p>'+
                            '</div>'
                    ),
                    $img = $li.find('img');
            $list.append( $li );

            // 创建缩略图
            // 如果为非图片文件,可以不用调用此方法。
            // thumbnailWidth x thumbnailHeight 为 100 x 100
            uploader.makeThumb( file, function( error, src ) {
                if ( error ) {
                    $img.replaceWith('<span>不能预览</span>');
                    return;
                }

                $img.attr( 'src', src );
                alert('图片地址   '+src);
            }, thumbnailWidth, thumbnailHeight );
        });

        // 文件上传过程中创建进度条实时显示。
        uploader.on( 'uploadProgress', function( file, percentage ) {
            var $li = $( '#'+file.id ),
                    $percent = $li.find('.progress-box .sr-only');

            // 避免重复创建
            if ( !$percent.length ) {
                $percent = $('<div class="progress-box"><span class="progress-bar radius"><span class="sr-only" style="width:0%"></span></span></div>').appendTo( $li ).find('.sr-only');
            }
            $li.find(".state").text("上传中");
            $percent.css( 'width', percentage * 100 + '%' );
        });

        // 文件上传成功,给item添加成功class, 用样式标记上传成功。
        uploader.on( 'uploadSuccess', function( file ) {
            $( '#'+file.id ).addClass('upload-state-success').find(".state").text("已上传");
        });
        //回调函数************************************************************
        uploader.on( 'uploadSuccess', function( file,response ) {
            var data = response.header;
            alert(data);

            alert(data.success);
        });

        // 文件上传失败,显示上传出错。
        uploader.on( 'uploadError', function( file ) {
            $( '#'+file.id ).addClass('upload-state-error').find(".state").text("上传出错");
        });

        // 完成上传完了,成功或者失败,先删除进度条。
        uploader.on( 'uploadComplete', function( file ) {
            $( '#'+file.id ).find('.progress-box').fadeOut();
        });
        uploader.on('all', function (type) {
            if (type === 'startUpload') {
                state = 'uploading';
            } else if (type === 'stopUpload') {
                state = 'paused';
            } else if (type === 'uploadFinished') {
                state = 'done';
            }

            if (state === 'uploading') {
                $btn.text('暂停上传');
            } else {
                $btn.text('开始上传');
            }
        });

        $btn.on('click', function () {
            if (state === 'uploading') {
                uploader.stop();
            } else {
                uploader.upload();
            }
        });

    });

    (function( $ ){
        // 当domReady的时候开始初始化
        $(function() {
            var $wrap = $('.uploader-list-container'),

            // 图片容器
                    $queue = $( '<ul class="filelist"></ul>' )
                            .appendTo( $wrap.find( '.queueList' ) ),

            // 状态栏,包括进度和控制按钮
                    $statusBar = $wrap.find( '.statusBar' ),

            // 文件总体选择信息。
                    $info = $statusBar.find( '.info' ),

            // 上传按钮
                    $upload = $wrap.find( '.uploadBtn' ),

            // 没选择文件之前的内容。
                    $placeHolder = $wrap.find( '.placeholder' ),

                    $progress = $statusBar.find( '.progress' ).hide(),

            // 添加的文件数量
                    fileCount = 0,

            // 添加的文件总大小
                    fileSize = 0,

            // 优化retina, 在retina下这个值是2
                    ratio = window.devicePixelRatio || 1,

            // 缩略图大小
                    thumbnailWidth = 110 * ratio,
                    thumbnailHeight = 110 * ratio,

            // 可能有pedding, ready, uploading, confirm, done.
                    state = 'pedding',

            // 所有文件的进度信息,key为file id
                    percentages = {},
            // 判断浏览器是否支持图片的base64
                    isSupportBase64 = ( function() {
                        var data = new Image();
                        var support = true;
                        data.onload = data.onerror = function() {
                            if( this.width != 1 || this.height != 1 ) {
                                support = false;
                            }
                        }
                        data.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";
                        return support;
                    } )(),

 // 检测是否已经安装flash,检测flash的版本
                    flashVersion = ( function() {
                        var version;

                        try {
                            version = navigator.plugins[ 'Shockwave Flash' ];
                            version = version.description;
                        } catch ( ex ) {
                            try {
                                version = new ActiveXObject('ShockwaveFlash.ShockwaveFlash')
                                        .GetVariable('$version');
                            } catch ( ex2 ) {
                                version = '0.0';
                            }
                        }
                        version = version.match( /\d+/g );
                        return parseFloat( version[ 0 ] + '.' + version[ 1 ], 10 );
                    } )(),

                    supportTransition = (function(){
                        var s = document.createElement('p').style,
                                r = 'transition' in s ||
                                        'WebkitTransition' in s ||
                                        'MozTransition' in s ||
                                        'msTransition' in s ||
                                        'OTransition' in s;
                        s = null;
                        return r;
                    })(),

            // WebUploader实例
                    uploader;

            if ( !WebUploader.Uploader.support('flash') && WebUploader.browser.ie ) {

                // flash 安装了但是版本过低。
                if (flashVersion) {
                    (function(container) {
                        window['expressinstallcallback'] = function( state ) {
                            switch(state) {
                                case 'Download.Cancelled':
                                    alert('您取消了更新!')
                                    break;

                                case 'Download.Failed':
                                    alert('安装失败')
                                    break;

                                default:
                                    alert('安装已成功,请刷新!');
                                    break;
                            }
                            delete window['expressinstallcallback'];
                        };

                        var swf = 'expressInstall.swf';
                        // insert flash object
                        var html = '<object type="application/' +
                                'x-shockwave-flash" data="' +  swf + '" ';

                        if (WebUploader.browser.ie) {
                            html += 'classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" ';
                        }

                        html += 'width="100%" height="100%" style="outline:0">'  +
                        '<param name="movie" value="' + swf + '" />' +
                        '<param name="wmode" value="transparent" />' +
                        '<param name="allowscriptaccess" value="always" />' +
                        '</object>';

                        container.html(html);

                    })($wrap);

                    // 压根就没有安转。
                } else {
                    $wrap.html('<a href="http://www.adobe.com/go/getflashplayer" target="_blank" border="0"><img alt="get flash player" src="http://www.adobe.com/macromedia/style_guide/images/160x41_Get_Flash_Player.jpg" /></a>');
                }

                return;
            } else if (!WebUploader.Uploader.support()) {
                alert( 'Web Uploader 不支持您的浏览器!');
                return;
            }

            // 实例化
            uploader = WebUploader.create({
                pick: {
                    id: '#filePicker-2',
                    label: '点击选择图片'
                },
                formData: {
                    uid: 123
                },
                dnd: '#dndArea',
                paste: '#uploader',
                swf: 'lib/webuploader/0.1.5/Uploader.swf',
                chunked: false,
                chunkSize: 512 * 1024,
                server: 'http://localhost:8080/Tjzhuisu/uploadServlet',
                // runtimeOrder: 'flash',

                // accept: {
                //     title: 'Images',
                //     extensions: 'gif,jpg,jpeg,bmp,png',
                //     mimeTypes: 'image/*'
                // },

                // 禁掉全局的拖拽功能。这样不会出现图片拖进页面的时候,把图片打开。
                disableGlobalDnd: true,
                fileNumLimit: 300,
                fileSizeLimit: 200 * 1024 * 1024,    // 200 M
                fileSingleSizeLimit: 50 * 1024 * 1024    // 50 M
            });

            // 拖拽时不接受 js, txt 文件。
            uploader.on( 'dndAccept', function( items ) {
                var denied = false,
                        len = items.length,
                        i = 0,
                // 修改js类型
                        unAllowed = 'text/plain;application/javascript ';

                for ( ; i < len; i++ ) {
                    // 如果在列表里面
                    if ( ~unAllowed.indexOf( items[ i ].type ) ) {
                        denied = true;
                        break;
                    }
                }

                return !denied;
            });

            uploader.on('dialogOpen', function() {
                console.log('here');
            });

            // uploader.on('filesQueued', function() {
            //     uploader.sort(function( a, b ) {
            //         if ( a.name < b.name )
            //           return -1;
            //         if ( a.name > b.name )
            //           return 1;
            //         return 0;
            //     });
            // });

            // 添加“添加文件”的按钮,
            uploader.addButton({
                id: '#filePicker2',
                label: '继续添加'
            });

            uploader.on('ready', function() {
                window.uploader = uploader;
            });

            // 当有文件添加进来时执行,负责view的创建
            function addFile( file ) {
                var $li = $( '<li id="' + file.id + '">' +
                        '<p class="title">' + file.name + '</p>' +
                        '<p class="imgWrap"></p>'+
                        '<p class="progress"><span></span></p>' +
                        '</li>' ),

                        $btns = $('<div class="file-panel">' +
                        '<span class="cancel">删除</span>' +
                        '<span class="rotateRight">向右旋转</span>' +
                        '<span class="rotateLeft">向左旋转</span></div>').appendTo( $li ),
                        $prgress = $li.find('p.progress span'),
                        $wrap = $li.find( 'p.imgWrap' ),
                        $info = $('<p class="error"></p>'),

                        showError = function( code ) {
                            switch( code ) {
                                case 'exceed_size':
                                    text = '文件大小超出';
                                    break;

                                case 'interrupt':
                                    text = '上传暂停';
                                    break;

                                default:
                                    text = '上传失败,请重试';
                                    break;
                            }

                            $info.text( text ).appendTo( $li );
                        };

                if ( file.getStatus() === 'invalid' ) {
                    showError( file.statusText );
                } else {
                    // @todo lazyload
                    $wrap.text( '预览中' );
                    uploader.makeThumb( file, function( error, src ) {
                        var img;

                        if ( error ) {
                            $wrap.text( '不能预览' );
                            return;
                        }

                        if( isSupportBase64 ) {
                            img = $('<img src="'+src+'">');
                            $wrap.empty().append( img );
                        } else {
                            $.ajax('http://localhost:8080/Tjzhuisu/uploadServlet', {
                                method: 'POST',
                                data: src,
                                dataType:'json'
                            }).done(function( response ) {
                                if (response.result) {
                                    img = $('<img src="'+response.result+'">');
                                    $wrap.empty().append( img );
                                } else {
                                    $wrap.text("预览出错");
                                }
                            });
                        }
                    }, thumbnailWidth, thumbnailHeight );

                    percentages[ file.id ] = [ file.size, 0 ];
                    file.rotation = 0;
                }

                file.on('statuschange', function( cur, prev ) {
                    if ( prev === 'progress' ) {
                        $prgress.hide().width(0);
                    } else if ( prev === 'queued' ) {
                        $li.off( 'mouseenter mouseleave' );
                        $btns.remove();
                    }

                    // 成功
                    if ( cur === 'error' || cur === 'invalid' ) {
                        console.log( file.statusText );
                        showError( file.statusText );
                        percentages[ file.id ][ 1 ] = 1;
                    } else if ( cur === 'interrupt' ) {
                        showError( 'interrupt' );
                    } else if ( cur === 'queued' ) {
                        percentages[ file.id ][ 1 ] = 0;
                    } else if ( cur === 'progress' ) {
                        $info.remove();
                        $prgress.css('display', 'block');
                    } else if ( cur === 'complete' ) {
                        $li.append( '<span class="success"></span>' );
                    }

                    $li.removeClass( 'state-' + prev ).addClass( 'state-' + cur );
                });

                $li.on( 'mouseenter', function() {
                    $btns.stop().animate({height: 30});
                });

                $li.on( 'mouseleave', function() {
                    $btns.stop().animate({height: 0});
                });

                $btns.on( 'click', 'span', function() {
                    var index = $(this).index(),
                            deg;

                    switch ( index ) {
                        case 0:
                            uploader.removeFile( file );
                            return;

                        case 1:
                            file.rotation += 90;
                            break;

                        case 2:
                            file.rotation -= 90;
                            break;
                    }

                    if ( supportTransition ) {
                        deg = 'rotate(' + file.rotation + 'deg)';
                        $wrap.css({
                            '-webkit-transform': deg,
                            '-mos-transform': deg,
                            '-o-transform': deg,
                            'transform': deg
                        });
                    } else {
                        $wrap.css( 'filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation='+ (~~((file.rotation/90)%4 + 4)%4) +')');
                        // use jquery animate to rotation
                        // $({
                        //     rotation: rotation
                        // }).animate({
                        //     rotation: file.rotation
                        // }, {
                        //     easing: 'linear',
                        //     step: function( now ) {
                        //         now = now * Math.PI / 180;

                        //         var cos = Math.cos( now ),
                        //             sin = Math.sin( now );

                        //         $wrap.css( 'filter', "progid:DXImageTransform.Microsoft.Matrix(M11=" + cos + ",M12=" + (-sin) + ",M21=" + sin + ",M22=" + cos + ",SizingMethod='auto expand')");
                        //     }
                        // });
                    }


                });

                $li.appendTo( $queue );
            }

            // 负责view的销毁
            function removeFile( file ) {
                var $li = $('#'+file.id);

                delete percentages[ file.id ];
                updateTotalProgress();
                $li.off().find('.file-panel').off().end().remove();
            }

            function updateTotalProgress() {
                var loaded = 0,
                        total = 0,
                        spans = $progress.children(),
                        percent;

                $.each( percentages, function( k, v ) {
                    total += v[ 0 ];
                    loaded += v[ 0 ] * v[ 1 ];
                } );

                percent = total ? loaded / total : 0;


                spans.eq( 0 ).text( Math.round( percent * 100 ) + '%' );
                spans.eq( 1 ).css( 'width', Math.round( percent * 100 ) + '%' );
                updateStatus();
            }

            function updateStatus() {
                var text = '', stats;

                if ( state === 'ready' ) {
                    text = '选中' + fileCount + '张图片,共' +
                    WebUploader.formatSize( fileSize ) + '。';
                } else if ( state === 'confirm' ) {
                    stats = uploader.getStats();
                    if ( stats.uploadFailNum ) {
                        text = '已成功上传' + stats.successNum+ '张照片至XX相册,'+
                        stats.uploadFailNum + '张照片上传失败,<a class="retry" href="#">重新上传</a>失败图片或<a class="ignore" href="#">忽略</a>'
                    }

                } else {
                    stats = uploader.getStats();
                    text = '共' + fileCount + '张(' +
                    WebUploader.formatSize( fileSize )  +
                    '),已上传' + stats.successNum + '张';

                    if ( stats.uploadFailNum ) {
                        text += ',失败' + stats.uploadFailNum + '张';
                    }
                }

                $info.html( text );
            }

            function setState( val ) {
                var file, stats;

                if ( val === state ) {
                    return;
                }

                $upload.removeClass( 'state-' + state );
                $upload.addClass( 'state-' + val );
                state = val;

                switch ( state ) {
                    case 'pedding':
                        $placeHolder.removeClass( 'element-invisible' );
                        $queue.hide();
                        $statusBar.addClass( 'element-invisible' );
                        uploader.refresh();
                        break;

                    case 'ready':
                        $placeHolder.addClass( 'element-invisible' );
                        $( '#filePicker2' ).removeClass( 'element-invisible');
                        $queue.show();
                        $statusBar.removeClass('element-invisible');
                        uploader.refresh();
                        break;

                    case 'uploading':
                        $( '#filePicker2' ).addClass( 'element-invisible' );
                        $progress.show();
                        $upload.text( '暂停上传' );
                        break;

                    case 'paused':
                        $progress.show();
                        $upload.text( '继续上传' );
                        break;

                    case 'confirm':
                        $progress.hide();
                        $( '#filePicker2' ).removeClass( 'element-invisible' );
                        $upload.text( '开始上传' );

                        stats = uploader.getStats();
                        if ( stats.successNum && !stats.uploadFailNum ) {
                            setState( 'finish' );
                            return;
                        }
                        break;
                    case 'finish':
                        stats = uploader.getStats();
                        if ( stats.successNum ) {
                            alert( '上传成功' );
                        } else {
                            // 没有成功的图片,重设
                            state = 'done';
                            location.reload();
                        }
                        break;
                }

                updateStatus();
            }

            uploader.onUploadProgress = function( file, percentage ) {
                var $li = $('#'+file.id),
                        $percent = $li.find('.progress span');

                $percent.css( 'width', percentage * 100 + '%' );
                percentages[ file.id ][ 1 ] = percentage;
                updateTotalProgress();
            };

            uploader.onFileQueued = function( file ) {
                fileCount++;
                fileSize += file.size;

                if ( fileCount === 1 ) {
                    $placeHolder.addClass( 'element-invisible' );
                    $statusBar.show();
                }

                addFile( file );
                setState( 'ready' );
                updateTotalProgress();
            };

            uploader.onFileDequeued = function( file ) {
                fileCount--;
                fileSize -= file.size;

                if ( !fileCount ) {
                    setState( 'pedding' );
                }

                removeFile( file );
                updateTotalProgress();

            };

            uploader.on( 'all', function( type ) {
                var stats;
                switch( type ) {
                    case 'uploadFinished':
                        setState( 'confirm' );
                        break;

                    case 'startUpload':
                        setState( 'uploading' );
                        break;

                    case 'stopUpload':
                        setState( 'paused' );
                        break;

                }
            });

            uploader.onError = function( code ) {
                alert( 'Eroor: ' + code );
            };

            $upload.on('click', function() {
                if ( $(this).hasClass( 'disabled' ) ) {
                    return false;
                }

                if ( state === 'ready' ) {
                    uploader.upload();
                } else if ( state === 'paused' ) {
                    uploader.upload();
                } else if ( state === 'uploading' ) {
                    uploader.stop();
                }
            });

            $info.on( 'click', '.retry', function() {
                uploader.retry();
            } );

            $info.on( 'click', '.ignore', function() {
                alert( 'todo' );
            } );

            $upload.addClass( 'state-' + state );
            updateTotalProgress();
        });

    })( jQuery );
</script>
</body>
</html>


这也我想把上传成功的文件名传给jsp页面,然后添加到数据库,,试了好多方法,传不去过去值。

webuploader 的uploadSuccess事件不是就是返回成功的file对象吗。页面获取不到吗。

在接受页面用request.getAttribute(dwc)无法获取?

@WebServlet("/FileUpload")
public class FileUpload extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
 * @see HttpServlet#HttpServlet()
 */
public FileUpload() {
    super();
    // TODO Auto-generated constructor stub
}

String filename;  

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
    response.setCharacterEncoding("UTF-8");
    //String path = request.getRealPath("/upload");
    String url =  filename;
    JSONObject json=new JSONObject();
    JSONArray array=new JSONArray();
    JSONObject temp1=new JSONObject();
    if(url != null){
        try {
            temp1.put("url", url);
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    try {
        array.put(0,temp1);
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        json.put("people", array);
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    PrintWriter out1=response.getWriter();
    out1.println(json);
    out1.close();

}

/**
 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 */
@SuppressWarnings("deprecation")
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

      request.setCharacterEncoding("utf-8");  //设置编码  

      //获得磁盘文件条目工厂  
      DiskFileItemFactory factory = new DiskFileItemFactory();  
      //获取文件需要上传到的路径  
      String path = request.getRealPath("/upload");  
        File folder = new File(path);
        if (!folder.exists()) {
            folder.mkdir();
        }
         //如果没以下两行设置的话,上传大的 文件 会占用 很多内存,  
          //设置暂时存放的 存储室 , 这个存储室,可以和 最终存储文件 的目录不同  
          /** 
           * 原理 它是先存到 暂时存储室,然后在真正写到 对应目录的硬盘上,  
           * 按理来说 当上传一个文件时,其实是上传了两份,第一个是以 .tem 格式的  
           * 然后再将其真正写到 对应目录的硬盘上 
           */  
      factory.setRepository(new File(path));  
    //设置 缓存的大小,当上传文件的容量超过该缓存时,直接放到 暂时存储室  
      factory.setSizeThreshold(1024*1024) ;  

    //高水平的API文件上传处理  
      ServletFileUpload upload = new ServletFileUpload(factory);  


      try {  
        //可以上传多个文件  
          List<FileItem> list = (List<FileItem>)upload.parseRequest(request);  

          for(FileItem item : list)  
          {  
              //获取表单的属性名字  
              String name = item.getFieldName();  
            //如果获取的 表单信息是普通的 文本 信息  
              if(item.isFormField())  
              {                     
                //获取用户具体输入的字符串 ,名字起得挺好,因为表单提交过来的是 字符串类型的  
                  String value = item.getString() ;  

                  request.setAttribute(name, value);  
              }  
            //对传入的非 简单的字符串进行处理 ,比如说二进制的 图片,电影这些  
              else  
              {  
                  /** 
                   * 以下三步,主要获取 上传文件的名字 
                   */  
                  //获取路径名  
                  String value = item.getName() ;  
                //索引到最后一个反斜杠  
                  int start = value.lastIndexOf("\\");  
                  //截取 上传文件的 字符串名字,加1是 去掉反斜杠,  
                  filename = value.substring(start+1);  

// String filename = value.substring(start+1);

String now=new SimpleDateFormat("yyyyMMddhhmmssSSS").format(new Date());
//request.setAttribute(name, filename);

// filename = now + filename;
filename = now+".jpg";
//真正写到磁盘上

//它抛出的异常 用exception 捕捉

                  //item.write( new File(path,filename) );//第三方提供的  

                   //手动写的  
                   OutputStream out = new FileOutputStream(new File(path,filename));  

                   InputStream in = item.getInputStream() ;  

                   int length = 0 ;  
                   byte [] buf = new byte[1024] ;  


                // in.read(buf) 每次读到的数据存放在   buf 数组中  
                   while( (length = in.read(buf) ) != -1)  
                   {  
                       //在   buf 数组中 取出数据 写到 (输出流)磁盘上  
                       out.write(buf, 0, length);  

                   }  

                   in.close();  
                   out.close();  
               }  
           }  



       } catch (FileUploadException e) {  
           // TODO Auto-generated catch block  
           e.printStackTrace();  
       }  
       catch (Exception e) {  
           // TODO Auto-generated catch block  

           //e.printStackTrace();  
       }  

      response.setContentType("text");  
        PrintWriter out = response.getWriter();  
        out.flush();  
        out.close(); 
}

}

weixin_39656493
哈尔滨佛爷 已解决
接近 2 年之前 回复
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