哈尔滨佛爷
2017-10-24 01:25
采纳率: 100%
浏览 1.2k
已采纳

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。

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6条回答 默认 最新

  • 哈尔滨佛爷 2017-10-24 01:29
    已采纳

    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;
                        } )(),
    
    
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  • 哈尔滨佛爷 2017-10-24 01:29
     // 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>
    
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  • 哈尔滨佛爷 2017-10-24 01:30


    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。

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  • 霸气男__ 2017-10-24 02:08

    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。

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  • hanss2 2017-10-24 02:47

    在接受页面用request.getAttribute(dwc)无法获取?

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  • 哈尔滨佛爷 2017-10-29 10:53

    @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(); 
    }
    

    }

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