Flash大文件上传(带进度条)

最近在做大文件上传项目时碰到了很多问题。基于.net的大文件上传组件网上是大把的有。
如

大家可去查询：http://www.baidu.com/s?lm=0&si=&rn=10&ie=gb2312&ct=0&wd=asp%2Enet+%B4%F3%CE%C4%BC%FE%C9%CF%B4%AB&pn=0&ver=0&cl=3&uim=1&usm=0&f=1

这些组件基本上都是基于HttpModule模式的，大部分都存在一个致命的问题：严重消耗内存。

最后没办法，只好采用Flash的FileReference模式去上传。具体我也不是很明白，大家可自己研究。


Flash下载：https://files.cnblogs.com/kingeric/SWFFileUpload.rar

展开下面的代码看吧，第一次使用代码模式，有点问题
一、CS相应源码如下：

import flash.net.FileReference;
import flash.net.URLRequest;
import flash.net.FileFilter;
import flash.display.Sprite;
import flash.events.*;



var fileRef = new FileReference();
var fileListener = new Object();

var totalBytes:Number = 0;
var uploadedBytes:Number = 0;

//从外部获取也许上传的文件类型
var acceptFileType:String = getFlashVars("acceptFileType");
//设置上传完毕后执行的js脚本
var comJsFun:String=getFlashVars("ComJsFun");
//this.tbFilePath.text = comJsFun;
//
var uploadURL:URLRequest = new URLRequest();
var xmlRequest:URLRequest = new URLRequest();
var xmlLoader:URLLoader = new URLLoader();

//初始化系统
function init() {
    this.mcWaterStyle.visible = false;
    this.mcFilePlayer.visible = false;
    this.progressBar.visible = false;

    //设置按钮文字大小，默认的字体和大小有点难看。
    var myFormat = new TextFormat();
    myFormat.size = 12;
    this.btBrowser.setStyle("textFormat", myFormat);
    this.btUpload.setStyle("textFormat", myFormat);
    this.tbFilePath.setStyle("textFormat", myFormat);
    
    this.mcWaterStyle.style0.setStyle("textFormat", myFormat);
    this.mcWaterStyle.style1.setStyle("textFormat", myFormat);
    this.mcWaterStyle.style2.setStyle("textFormat", myFormat);
    this.uploadInfo.setStyle("textFormat", myFormat);
    
//如果从FlashVars获取的参数acceptFileType（限定上传文件类型）无值，那么访问相应的XML（上传文件类型配置）
    if(acceptFileType==""){
        //从外部获取上传附加的文件类型。
        xmlRequest = new URLRequest("http://www.cnblogs.com/XML/Setting_Article.xml");
        xmlLoader.load(xmlRequest); 
        xmlLoader.addEventListener(Event.COMPLETE,loaderHandler);
    }
}

init();

//按钮事件
this.btBrowser.addEventListener(MouseEvent.CLICK, browseHandler);
this.btUpload.addEventListener(MouseEvent.CLICK, UploadHandler);

fileRef.addEventListener(Event.SELECT,selectHandler);//选择文件
fileRef.addEventListener(Event.CANCEL, cancelHandler);//上传过程中取消事件
fileRef.addEventListener(Event.OPEN, openHandler);//开始上传事件
fileRef.addEventListener(Event.COMPLETE, completeHandler);//上传完毕事件
fileRef.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA,uploadCompleteDataHandler)//上传数据完毕事件，有点迷惑Event.COMPLETE跟DataEvent.UPLOAD_COMPLETE_DATA的区别
fileRef.addEventListener(ProgressEvent.PROGRESS, progressHandler);//上传过程事件，相应的进度条代码在这里了

//监听上传过程可能出错的事件
fileRef.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler);
fileRef.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
fileRef.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);


//浏览按钮事件
function browseHandler(event:MouseEvent):void {
    fileRef.browse(browseGetTypes());
}
function browseGetTypes():Array {
    var allTypes:Array = new Array(browseGetFileTypeFilter());
    return allTypes;
}

function browseGetFileTypeFilter():FileFilter {
    
    if(acceptFileType!=""){
        var arr = acceptFileType.split("|");
        var FileExtension = "";
        for(var i=0;i<arr.length;i++){
            if (arr[i] == "") 
                 continue;
            if(i==0)
                FileExtension = "*."+arr[i];
            else
                FileExtension = FileExtension+";*."+arr[i];
        }
        return new FileFilter("文件格式("+FileExtension+")", ""+FileExtension+"");
    }else{
        return new FileFilter("所有文件(*.*)","*.*");
    }
    
    //return new FileFilter("所有文件(*.*)","*.*");
}

//加载上传配置事件
function loaderHandler(event:Event):void {
    var myXML:XML = new XML(xmlLoader.data); 
    //myXML = XML();
    acceptFileType = myXML.child("Upload").ContontFileStyle;
    trace("--"+myXML.child("Upload").ContontFileStyle+"--");
    if(this.uploadInfo.text=="")
        this.uploadInfo.text = "允许的格式："+myXML.child("Upload").ContontFileStyle;
}

//选择文件事件
function selectHandler(event:Event):void{
     this.uploadInfo.text = "";
     this.mcWaterStyle.visible = false;
     this.mcFilePlayer.visible = false;
     
     if (fileRef.size > 0){
         totalBytes = fileRef.size;
         this.tbFilePath.text =  fileRef.name+ "[" + this.getSizeType(totalBytes) + "]";
         var fileExtName = fileRef.name.substring(fileRef.name.lastIndexOf(".")+1);
         switch(fileExtName.toLowerCase()){
             case "jpg":
             case "jpeg":
             case "gif":
             case "bmp":
                 this.mcWaterStyle.visible = true;
                 break;
             case "flv":
                 this.mcFilePlayer.visible = true;
                 this.mcFilePlayer.mcWidth.text = 410;
                 this.mcFilePlayer.mcHeight.text = 370;
                 break;
             case "swf":
                 this.mcFilePlayer.visible = true;
                 this.mcFilePlayer.mcWidth.text = 550;
                 this.mcFilePlayer.mcHeight.text = 400;
                 break;
             case "rm":
             case "rmvb":
             case "mp3":
             case "avi":
             case "mpg":
             case "mpeg":
             case "asf":
             case "wmv":
             case "wma":
                 this.mcFilePlayer.visible = true;
                 this.mcFilePlayer.mcWidth.text = 550;
                 this.mcFilePlayer.mcHeight.text = 400;
                 break;
             default:
                 this.mcWaterStyle.visible = false;
                 this.mcFilePlayer.visible = false;
                 break;
         }
    }else{
         this.uploadInfo.text = "错误：您没有选择文件！";
    } 
}

//上传过程中取消
function cancelHandler(event:Event):void{
    this.progressBar.visible = false;
};

//当上载或下载操作开始时
function openHandler(event:Event):void{
    this.tbFilePath.visible = false;
    this.mcWaterStyle.visible = false;
    this.mcFilePlayer.visible = false;
    this.btBrowser.visible = false;
    this.btUpload.label = "取消";
    this.progressBar.visible = true;
};

//点击伤
function UploadHandler(event:MouseEvent):void{
    if (this.btUpload.label=="上传"){
        var WaterMarkStyleP:String = "";
        if(this.mcWaterStyle.style0.selected == true)
            WaterMarkStyleP = "0";
        else if(this.mcWaterStyle.style1.selected == true)
            WaterMarkStyleP = "1";
        else if(this.mcWaterStyle.style2.selected == true)
            WaterMarkStyleP = "2";
        
        var mcFilePlayerP:String="&width="+this.mcFilePlayer.mcWidth;
        mcFilePlayerP += "&height="+this.mcFilePlayer.mcHeigth;
        
        if(this.mcFilePlayer.mcAutoYes.selected == true)
            mcFilePlayerP += "&auto=true";
        else if(this.mcFilePlayer.mcAutoNo.selected == true)
            mcFilePlayerP += "&auto=false";
            
        uploadURL.url="Upload_File_SWF.aspx?WaterMarkStyle="+WaterMarkStyleP+mcFilePlayerP;
        fileRef.upload(uploadURL);//此为采用aspx默认方式进行上传的文件地址。如：Upload_File_SWF.aspx此页面我在上传完毕后，直接进行Response.Write("true");那么Flash可在uploadCompleteDataHandler后可后去到true这个数据。以便你进行操作。
    }else if(this.btUpload.label=="取消"){
        this.tbFilePath.visible = true;
        this.mcWaterStyle.visible = false;
        this.mcFilePlayer.visible = false;
        this.btBrowser.visible = true;
        this.btUpload.label = "上传";
        this.progressBar.visible = false;
        this.uploadInfo.text="";
    }else if(this.btUpload.label=="重新上传"){
        this.tbFilePath.visible = true;
        this.mcWaterStyle.visible = false;
        this.mcFilePlayer.visible = false;
        this.btBrowser.visible = true;
        this.btUpload.label = "上传";
        this.progressBar.visible = false;
    }
}

//在文件上载或下载操作期间定期调用
function progressHandler(event:ProgressEvent):void{
    //var fileRef:FileReference = FileReference(event.target);
    if(event.bytesLoaded==event.bytesTotal){
        this.uploadInfo.text= "正在转移数据，请稍后--"+getSizeType(event.bytesLoaded)+"/"+getSizeType(event.bytesTotal);
    }else{
        this.progressBar.mcMask.width = (event.bytesLoaded/event.bytesTotal)*this.progressBar.mcLoaded.width;
        this.uploadInfo.text="上传文件中，请等待--"+getSizeType(event.bytesLoaded)+"/"+getSizeType(event.bytesTotal);
    }
}

function completeHandler(event:Event):void {
    //trace("completeHandler: " + event);
    this.tbFilePath.visible = true;
    this.tbFilePath.text = "";
    this.mcWaterStyle.visible = false;
    this.mcFilePlayer.visible = false;
    this.btBrowser.visible = true;
    this.btUpload.label = "上传";
    this.progressBar.visible = false;
    //this.uploadInfo.text = "上传成功！";
}

function uploadCompleteDataHandler(event:DataEvent):void {
    if(event.data.indexOf("|")!=-1){
        var fileInfoArr = event.data.split("|");
        if(fileInfoArr[0].toLowerCase()=="true"){
            this.uploadInfo.text = "上传成功："+fileInfoArr[1]+"！";
            if(comJsFun!=""){
                //ExternalInterface.call("UploadForEditor","hh");
                ExternalInterface.call("UploadForEditor",event.data.replace("true|",""));
                //this.tbFilePath.text = event.data;
            }
        }else{
            this.uploadInfo.text = "上传失败："+EncodeUtf8(fileInfoArr[1])+"！";
        }
    }
    
    
    
    trace("uploadCompleteData: " + event.data);
}



//错误事件
function httpStatusHandler(event:HTTPStatusEvent):void {
   trace("httpStatusHandler: " + event);
   this.mcWaterStyle.visible = false;
   this.mcFilePlayer.visible = false;
   this.uploadInfo.text="HTTP错误： " +  event;
}
function ioErrorHandler(event:IOErrorEvent):void {
   trace("ioErrorHandler: " + event);
   this.mcWaterStyle.visible = false;
   this.mcFilePlayer.visible = false;
   this.uploadInfo.text="IO错误： " +  event;
}
function securityErrorHandler(event:SecurityErrorEvent):void {
   trace("openHandler: " + event);
   this.mcWaterStyle.visible = false;
   this.mcFilePlayer.visible = false;
   this.uploadInfo.text="IO安全设置错误： " +  event;
}







/**//*--------------------以下为常用函数-------------
---------------------------------------------*/
//处理文件大小表示方法
function getSizeType(s)
{
    var danwei = ["Byte","KB","MB","GB" ];
    var d = 0;
    while ( s >= 900 )
    {
        s = Math.round(s*100/1024)/100;
        d++;
    }
    return s+danwei[d];
}

function getFlashVars(parName){
    var parValue:String=stage.loaderInfo.parameters[parName];
    if(parValue==null)
       return "";
    else
       return parValue;
}



//转换乱码
function EncodeUtf8(str : String):String {
    var oriByteArr : ByteArray = new ByteArray();
    oriByteArr.writeUTFBytes(str);
    var tempByteArr : ByteArray = new ByteArray();
    for (var i = 0; i<oriByteArr.length; i++) {
        if (oriByteArr[i] == 194) {
            tempByteArr.writeByte(oriByteArr[i+1]);
            i++;
        } else if (oriByteArr[i] == 195) {
            tempByteArr.writeByte(oriByteArr[i+1] + 64);
            i++;
        } else {
            tempByteArr.writeByte(oriByteArr[i]);
        }
    }
    tempByteArr.position = 0;
    return tempByteArr.readMultiByte(tempByteArr.bytesAvailable,"chinese");
    //return tempByteArr.readMultiByte(tempByteArr.bytesAvailable,"chinese");
}

二、相应的上传文件代码(.net)

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;


namespace TT.WebManager.Web.Admin.Article
{
    public partial class Upload_File_SWF : System.Web.UI.Page
    {
        string AppPath = "";

        string FileURL = "";//文件网络地址
        string FileURL2 = "";//文件网络地址,如果加了水印
        string FileAppPath = "";
        string FileAppPath2 = "";

        string sFilePathName = "";
        string sFileName = "";
        int FileSize = 0;

        string FileExtName = "";

        int WaterMarkStyle = 0;
        string FileAuto = "true";
        int FileWidth = 0;
        int FileHeigth = 0;

        protected void Page_Load(object sender, EventArgs e)
        {
            TT.WebManager.BLL.Setting bll = new TT.WebManager.BLL.Setting();
            bll.Init(false);

            AppPath = System.Web.HttpContext.Current.Request.PhysicalApplicationPath;

            WaterMarkStyle = Methods.Req.GetInt("WaterMarkStyle", 0);
            FileWidth = Methods.Req.GetInt("Width",550);
            FileHeigth = Methods.Req.GetInt("Heigth", 400);
            FileAuto = Methods.Req.GetString("Auto");

            try
            {
                HttpPostedFile postedFile = Request.Files["Filedata"];
                sFilePathName = postedFile.FileName;
                FileSize = postedFile.ContentLength;  //===========获取文件的大小

                if (FileSize <= 0)
                {
                    Response.Clear();
                    Response.Write("false|您没有选择文件！");
                    Response.End();
                }
                else
                {
                    sFileName = sFilePathName.Substring(sFilePathName.LastIndexOf("\\") + 1);
                    FileExtName = sFilePathName.Substring(sFilePathName.LastIndexOf(".") + 1);
                    if (IsValidFileType(FileExtName) == false)
                    {
                        Response.Clear();
                        Response.Write("false|系统禁止上传此格式的文件！");
                        Response.End();
                    }
                    else
                    {
                        GotoUploadFile(postedFile);
                    }
                }
            }
            catch { }
            
        }

        protected void GotoUploadFile(HttpPostedFile postedFile)
        {
            string NewFileName = DateTime.Now.ToString("yyyyMMddhhmmss") + FileSize + "." + FileExtName;
            string NewFileName2 = DateTime.Now.ToString("yyyyMMddhhmmss") + FileSize + "_1." + FileExtName;
            string NewFilePath = "";
            if (Model.Article.Setting.Upload_SortFile == true)
            {
                if (Model.Article.Setting.Upload_FolderStyle != "")
                {
                    FileURL = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + FileExtName + "/" + DateTime.Now.ToString(Model.Article.Setting.Upload_FolderStyle) + "/" + NewFileName;
                    FileURL2 = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + FileExtName + "/" + DateTime.Now.ToString(Model.Article.Setting.Upload_FolderStyle) + "/" + NewFileName2;
                    NewFilePath = AppPath + Model.Article.Setting.Upload_Folder.Replace("/", "\\") + "\\" + FileExtName + "\\" + DateTime.Now.ToString(Model.Article.Setting.Upload_FolderStyle).Replace("/", "\\");
                }
                else
                {
                    FileURL = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + FileExtName + "/" + NewFileName;
                    FileURL2 = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + FileExtName + "/" + NewFileName2;
                    NewFilePath = AppPath + Model.Article.Setting.Upload_Folder.Replace("/", "\\") + "\\" + FileExtName;
                }

            }
            else
            {
                if (Model.Article.Setting.Upload_FolderStyle != "")
                {
                    FileURL = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + DateTime.Now.ToString(Model.Article.Setting.Upload_FolderStyle) + "/" + NewFileName;
                    FileURL2 = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + DateTime.Now.ToString(Model.Article.Setting.Upload_FolderStyle) + "/" + NewFileName2;
                    NewFilePath = AppPath + Model.Article.Setting.Upload_Folder.Replace("/", "\\") + "\\" + DateTime.Now.ToString(Model.Article.Setting.Upload_FolderStyle).Replace("/", "\\");
                }
                else
                {
                    FileURL = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + NewFileName;
                    FileURL2 = Model.Article.Setting.Upload_Prefix + Model.Article.Setting.Upload_Folder + "/" + NewFileName2;
                    NewFilePath = AppPath + Model.Article.Setting.Upload_Folder.Replace("/", "\\");
                }
            }

            TT.WebManager.Methods.IIOO.CreateDirectory(NewFilePath);

            FileAppPath = NewFilePath + "\\" + NewFileName;
            FileAppPath2 = NewFilePath + "\\" + NewFileName2;

            postedFile.SaveAs(FileAppPath);
            switch (FileExtName.ToLower())
            {
                case "jpg":
                case "jpeg":
                case "gif":
                case "bmp":
                case "png":
                    //==========生成水印=============
                    switch (WaterMarkStyle)
                    {
                        case 1:
                            CreateWeaterText(FileAppPath, FileAppPath2, Model.Article.Setting.WaterMark_Text, FileExtName);
                            FileURL = FileURL2;
                            break;
                        case 2:
                            CreateWeaterPicture(FileAppPath, FileAppPath2, Server.MapPath(Model.Article.Setting.WaterMark_Picture), FileExtName);
                            FileURL = FileURL2;
                            break;
                        default:
                            break;
                    }
                    break;
            }

            string ReturnString = sFileName + "|" + FileURL + "|" + FileWidth + "|" + FileHeigth + "|" + FileAuto;

            Response.Clear();
            Response.Write("true|"+ReturnString);
            Response.End();
        }

        private void CreateWeaterText(string paraOldFileName, string paraNewsFileName, string AddText, string FileExtensionName)
        {
            System.Drawing.Image image = System.Drawing.Image.FromFile(paraOldFileName);
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(image);

            //文字抗锯齿
            g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

            g.DrawImage(image, 0, 0, image.Width, image.Height);
            //Font font = new Font("黑体", 14, FontStyle.Bold);
            //Brush b = new SolidBrush(Color.Yellow);
            Font font = new Font(Model.Article.Setting.WaterMark_FontFamily, Model.Article.Setting.WaterMark_FontSize, FontStyle.Bold);
            Brush b = new SolidBrush(Methods.TypeParse.StrToColor(Model.Article.Setting.WaterMark_FontColor));






            int Xpos = 0;
            int Ypos = 0;
            SizeF crsize = new SizeF();
            crsize = g.MeasureString(AddText, font);
            int crsize_With = Convert.ToInt32(crsize.Width);
            int crsize_Height = Convert.ToInt32(crsize.Height);

            int WaterMark_xPos = 10;
            int WaterMark_yPos = 10;

            switch (Model.Article.Setting.WaterMark_Position)//==========从图片的左上角开始算起(0,0)
            {
                case 1:
                    Xpos = WaterMark_xPos;
                    Ypos = WaterMark_yPos;
                    break;
                case 2:
                    Xpos = image.Width - (crsize_With + WaterMark_xPos);
                    Ypos = WaterMark_yPos;
                    break;
                case 3:
                    Xpos = WaterMark_xPos;
                    Ypos = image.Height - (crsize_Height + WaterMark_yPos);
                    break;
                case 4:
                    Xpos = image.Width - (crsize_With + WaterMark_xPos);
                    Ypos = image.Height - (crsize_Height + WaterMark_yPos);
                    break;
            }

            //画阴影
            PointF pt = new PointF(0, 0);
            System.Drawing.Brush TransparentBrush0 = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(50, System.Drawing.Color.Black));
            System.Drawing.Brush TransparentBrush1 = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(20, System.Drawing.Color.Black));

            g.DrawString(AddText, font, TransparentBrush0, Xpos, Ypos + 1);
            g.DrawString(AddText, font, TransparentBrush0, Xpos + 1, Ypos);
            g.DrawString(AddText, font, TransparentBrush1, Xpos + 1, Ypos + 1);
            g.DrawString(AddText, font, TransparentBrush1, Xpos, Ypos + 2);
            g.DrawString(AddText, font, TransparentBrush1, Xpos + 2, Ypos);

            TransparentBrush0.Dispose();
            TransparentBrush1.Dispose();


            g.DrawString(AddText, font, b, Xpos, Ypos);

            switch (FileExtensionName.ToLower())
            {
                case "jpg":
                case "jpeg":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
                    break;
                case "gif":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
                    break;
                case "bmp":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Bmp);
                    break;
                case "png":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Png);
                    break;
            }
            g.Dispose();

            image.Save(paraNewsFileName);
            image.Dispose();
            Response.Clear();

            if (File.Exists(paraOldFileName) == true)
            {
                File.Delete(paraOldFileName);
            }
        }

        private void CreateWeaterPicture(string paraOldFileName, string paraNewsFileName, string AddPicture, string FileExtensionName)
        {
            System.Drawing.Image image = System.Drawing.Image.FromFile(paraOldFileName);
            System.Drawing.Image copyImage = System.Drawing.Image.FromFile(AddPicture);

            ImageAttributes imageAttributes = new ImageAttributes();
            ColorMap colorMap = new ColorMap();
            colorMap.OldColor = Color.FromArgb(200, 0, 200, 0);
            colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
            ColorMap[] remapTable = { colorMap };
            imageAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);
            float[][] colorMatrixElements = {
                                                new float[] {1.0f,  0.0f,  0.0f,  0.0f, 0.0f},
                                                new float[] {0.0f,  1.0f,  0.0f,  0.0f, 0.0f},
                                                new float[] {0.0f,  0.0f,  1.0f,  0.0f, 0.0f},
                                                new float[] {0.0f,  0.0f,  0.0f,  Model.Article.Setting.WaterMark_Transparency, 0.0f},
                                                new float[] {0.0f,  0.0f,  0.0f,  0.0f, 1.0f}
                                            };
            ColorMatrix colorMatrix = new ColorMatrix(colorMatrixElements);
            imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);


            Graphics g = Graphics.FromImage(image);


            //PointF pt = new PointF(0, 0);
            //System.Drawing.Brush TransparentBrush0 = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(50, System.Drawing.Color.));
            //System.Drawing.Brush TransparentBrush1 = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(20, System.Drawing.Color.Black));

            //g.DrawString(AddText, font, TransparentBrush0, pt.X, pt.Y + 1);

            //g.DrawString(AddText, font, TransparentBrush0, pt.X + 1, pt.Y);

            //g.DrawString(AddText, font, TransparentBrush1, pt.X + 1, pt.Y + 1);

            //g.DrawString(AddText, font, TransparentBrush1, pt.X, pt.Y + 2);

            //g.DrawString(AddText, font, TransparentBrush1, pt.X + 2, pt.Y);

            //TransparentBrush0.Dispose();

            //TransparentBrush1.Dispose();


            //设定合成图像的质量
            g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            //设置高质量插值法
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
            //设置高质量,低速度呈现平滑程度
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            int xPos = image.Width - copyImage.Width - 10;
            int yPos = image.Height - copyImage.Height - 10;

            switch (Model.Article.Setting.WaterMark_Position)//==========从图片的左上角开始算起(0,0)
            {
                case 1:
                    xPos = 10;
                    yPos = 10;
                    break;
                case 2:
                    xPos = image.Width - copyImage.Width - 10;
                    yPos = 10;
                    break;
                case 3:
                    xPos = 10;
                    yPos = image.Height - copyImage.Height - 10;
                    break;
                case 4:
                    xPos = image.Width - copyImage.Width - 10;
                    yPos = image.Height - copyImage.Height - 10;
                    break;
            }

            g.DrawImage(copyImage, new Rectangle(xPos, yPos, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel, imageAttributes);

            switch (FileExtensionName.ToLower())
            {
                case "jpg":
                case "jpeg":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
                    break;
                case "gif":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
                    break;
                case "bmp":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Bmp);
                    break;
                case "png":
                    image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Png);
                    break;
            }
            g.Dispose();

            image.Save(paraNewsFileName);
            image.Dispose();
            imageAttributes.Dispose();

            Response.Clear();

            if (File.Exists(paraOldFileName) == true)
            {
                File.Delete(paraOldFileName);
            }

            // return paraNewsFileName;
        }

        protected bool IsValidFileType(string ExtName)
        {
            if (Model.Article.Setting.Upload_ContontFileStyle.Trim() == "")
                return true;

            string[] AcceptedFileTypes = Model.Article.Setting.Upload_ContontFileStyle.Split(new char[] { '|' });
            for (int i = 0; i < AcceptedFileTypes.Length; i++)
            {
                if (ExtName.ToLower() == AcceptedFileTypes[i].ToLower())
                {
                    return true;
                }
            }
            return false;
        }
    }
}

三、相应的aspx页面代码

Code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>
<head>
  <title>FLASH 上传测试</title>
  <meta http-equiv="content-type" content="text/html; charset=gb2312" />
  <link href="../images/style.css" rel="stylesheet" type="text/css" />
  <script language="javascript">AC_FL_RunContent = 0;</script>
  <script src="../javascript/AC_RunActiveContent.js" language="javascript"></script>
  
</head>
<body>

<!--影片中使用的 URL-->
<!--影片中使用的文本-->
<!-- saved from url=(0013)about:internet -->
<script language="javascript">
    if (AC_FL_RunContent == 0) {
        alert("此页需要 AC_RunActiveContent.js");
    } else {
        AC_FL_RunContent(
            'codebase', 'http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0',
            'width', '400',
            'height', '56',
            'src', '../SWFUpload/SWFFileUpload',
            'quality', 'high',
            'pluginspage', 'http://www.macromedia.com/go/getflashplayer',
            'align', 'middle',
            'play', 'true',
            'loop', 'true',
            'scale', 'showall',
            'wmode', 'window',
            'devicefont', 'false',
            'id', 'SWFFileUpload',
            'bgcolor', '#ffffff',
            'name', 'SWFFileUpload',
            'menu', 'true',
            'allowFullScreen', 'false',
            'allowScriptAccess','sameDomain',
            'movie', '../SWFUpload/SWFFileUpload',
            'salign', '',
            'FlashVars','ComJsFun=UploadForEditor'
            ); //end AC code
    }
//src和movie属性为Flash文件地址，请勿写.swf后缀名
//FlashVars为给Flash设置的参数。
</script>

<noscript>
    <object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="400" height="56" id="SWFFileUpload" align="middle">
    <param name="allowScriptAccess" value="sameDomain" />
    <param name="allowFullScreen" value="false" />
    <param name="movie" value="../SWFUpload/SWFFileUpload.swf" />
    <param name="quality" value="high" />
    <param name="bgcolor" value="#ffffff" />
    <param name="FlashVars" value="ComJsFun=UploadForEditor"/>
    <embed src="../SWFUpload/SWFFileUpload.swf" quality="high" bgcolor="#ffffff" width="400" height="56" name="SWFFileUpload" align="middle" allowScriptAccess="sameDomain" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
    </object>
</noscript>

<div id="showInfo"></div>

 
<script language="javascript" type="text/javascript">
function UploadForEditor(Value){
   alert(Value);
   //var RSArr = Value.split("|");
   //UploaFile(RSArr[0],RSArr[1],RSArr[2],RSArr[3],RSArr[4]);
} 




</script>
</body>
</html>