<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SWFUpload_Demo.aspx.cs" Inherits="BookShop.Web.Test.SWFUpload_Demo" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <title></title>

    <script src="../../js/jquery-1.7.1.js"></script>

    <script src="../handlers.js"></script>

    <script src="../swfupload.js"></script>

    <script src="../../js/jquery.imgareaselect.min.js"></script>

    <link href="../../Css/imgareaselect-default.css" rel="stylesheet" />

    <script type="text/javascript">

        var swfu;

        window.onload = function () {

            swfu = new SWFUpload({

                //指定要上传的路径

                upload_url: "/ashx/FileUpload.ashx?action=upload",

                async: true,

                post_params: {

                    "ASPSESSID": "<%=Session.SessionID %>"

                },

                // File Upload Settings

                file_size_limit: "2 MB",

                file_types: "*.jpg;*.gif",

                file_types_description: "JPG Images",

                file_upload_limit: ,    // Zero means unlimited

                // 事件处理了的三个主要方法定义在 Handlers.js

                //  The handlers are not part of SWFUpload but are part of my website and control how

                //  my website reacts to the SWFUpload events.

                swfupload_preload_handler: preLoad,

                swfupload_load_failed_handler: loadFailed,

                file_queue_error_handler: fileQueueError,

                file_dialog_complete_handler: fileDialogComplete,

                upload_progress_handler: uploadProgress,

                upload_error_handler: uploadError,

                upload_success_handler: showImage,

                upload_complete_handler: uploadComplete,

                // 按钮设置

                button_image_url: "/SWFUpload/images/XPButtonNoText_160x22.png",

                button_placeholder_id: "spanButtonPlaceholder",

                button_width: ,

                button_height: ,

                button_text: '<span class="button">请选择上传图片<span class="buttonSmall">(2 MB Max)</span></span>',

                button_text_style: '.button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt; } .buttonSmall { font-size: 10pt; }',

                button_text_top_padding: ,

                button_text_left_padding: ,

                // Flash Settings

                flash_url: "/SWFUpload/swfupload.swf",    // Relative to this file

                flash9_url: "/SWFUpload/swfupload_FP9.swf",    // Relative to this file

                custom_settings: {

                    upload_target: "divFileProgressContainer"

                },

                // Debug Settings

                debug: false

            });

        }

        //上传成功以后调用该方法

        function showImage(file, serverData) {

            var data = serverData.split(':');

            //将上传成功的图片作为div的背景

            console.log(data[]);

            $("#selectbanner").attr("src", data[]);

            $('#selectbanner').imgAreaSelect({

                selectionColor: 'blue', x1: , y1: , x2: ,

                y2: , selectionOpacity: 0.2, onSelectEnd: preview

            });

        };

        //选择结束以后调用该方法

        function preview(img, selection) {

            $('#selectbanner').data('x', selection.x1);

            $('#selectbanner').data('y', selection.y1);

            $('#selectbanner').data('w', selection.width);

            $('#selectbanner').data('h', selection.height);

        };

        //裁剪确认操作

        $(function () {

            $("#btnCut").click(function () {

                var pic = $('#selectbanner').attr('src');

                var x, y, w, h;

                $.post(

                 "/ashx/FileUpload.ashx",

                 {

                     "x": $('#selectbanner').data('x'),

                     "y": $('#selectbanner').data('y'),

                     "w": $('#selectbanner').data('w'),

                     "h": $('#selectbanner').data('h'),

                     "pic": pic,

                     "action": "cut",

                 },

                function (data) {

                    //把裁剪后图片加载到原处

                    $('#selectbanner').attr("src", data);

                }

                )

                //var pars = {

                //    "x": $('#selectbanner').data('x'),

                //    "y": $('#selectbanner').data('y'),

                //    "w": $('#selectbanner').data('w'),

                //    "h": $('#selectbanner').data('h'),

                //    "action": "cut",

                //    "pic": $("#selectbanner").attr("src")

                //};

                //$.post("/ashx/FileUpload.ashx", pars, function (data) {

                //    $("#showPhoto").attr("src",data);

                //});

            });

        })

    </script>

</head>

<body>

    <form id="form1" runat="server">

        <div id="content">

            <div id="swfu_container" style="margin: 0px 10px;">

                <div>

                    <span id="spanButtonPlaceholder"></span>

                </div>

                <div id="divFileProgressContainer" style="height: 75px;"></div>

                <div id="thumbnails"></div>

                <input type="button" value="截取图片" id="btnCut" />

                <img id="selectbanner" />

                <img id="showPhoto" />

            </div>

        </div>

    </form>

</body>

</html>

using BookShopManager.Web.Common;

using System;

using System.Collections.Generic;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Web;

namespace BookShopManager.Web.Ashx

{

    /// <summary>

    /// FileUpload 的摘要说明

    /// </summary>

    public class FileUpload : IHttpHandler

    {

        public void ProcessRequest(HttpContext context)

        {

            context.Response.ContentType = "text/plain";

            string action = context.Request["action"];

            if (action == "upload")

            {

                ProcessFileUpload(context);//图片上传

            }

            else if (action == "cut")

            {

                ProcessCutPhoto(context);//截取图片

            }

            else

            {

                context.Response.Write("参数错误");

            }

        }

        private static void ProcessFileUpload(HttpContext context)

        {

            HttpPostedFile file = context.Request.Files["Filedata"];

            if (file != null)

            {

                string fileName = Path.GetFileName(file.FileName);

                string fileExt = Path.GetExtension(fileName);

                if (fileExt == ".jpg")

                {

                    string dir = "/FileUpload/" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + "/";

                    if (!Directory.Exists(context.Request.MapPath(dir)))

                    {

                        Directory.CreateDirectory(context.Request.MapPath(dir));

                    }

                    string newFileName = Guid.NewGuid().ToString();

                    string fullDir = dir + newFileName + fileExt;

                    file.SaveAs(context.Request.MapPath(fullDir));

                    context.Response.Write(fullDir);

                }

            }

        }

        private void ProcessCutPhoto(HttpContext context)

        {

            int x = ConvertHelper.ToInt(context.Request["x"]);

            int y = ConvertHelper.ToInt(context.Request["y"]);

            int w = ConvertHelper.ToInt(context.Request["w"]);

            int h = ConvertHelper.ToInt(context.Request["h"]);

            string imgSrc = context.Request["pic"];//获取上传成功的图片路径

            using (Bitmap map = new Bitmap(w, h))

            {

                using (Graphics g = Graphics.FromImage(map))

                {

                    using (Image img = Image.FromFile(context.Request.MapPath(imgSrc)))

                    {

                        g.DrawImage(img, new Rectangle(, , w, h), new Rectangle(x, y, w, h), GraphicsUnit.Pixel);

                        string newFileName = Guid.NewGuid().ToString();

                        string fullDir = "/FileUpload/" + newFileName + ".jpg";

                        map.Save(context.Request.MapPath(fullDir), System.Drawing.Imaging.ImageFormat.Jpeg);

                        context.Response.Write(fullDir);

                    }

                }

            }

        }

        public bool IsReusable

        {

            get

            {

                return false;

            }

        }

    }

}