Asp.net 怎么像服务器发送图片，并放在根目录下Upload里

Question

求指教....

Answer 1

用.net的上传控件FileUpload：string fileName = FuImg.FileName;
        string exeName = Path.GetExtension(fileName);
        if (exeName.ToUpper() != ".JPG" && exeName.ToUpper() != ".BMP" && exeName.ToUpper() != ".PNG" && exeName.ToUpper() != ".GIF")
        {
            this.Tip("请不要上传非图片的文件！");
            return;
        }
        if (FuImg.PostedFile.ContentLength > 2048000)
        {
            this.Tip("对不起，你上传的图片太大，请转换后上传！");
            return;
        }
        //重命名图片名称
        string fileNameNew = DateTime.Now.ToString("yyyyMMddHHmmss") + exeName;
        string filePath = @"../uploadFile/line_xingcheng/" + fileNameNew;
        this.FuImg.SaveAs(Server.MapPath(@"../uploadFile/line_xingcheng/") + fileNameNew);
不用.NET控件的话就用数据流传
string filePath = Request["UpFile"];
        //开始上传
        //获取要保存的文件信息        
        FileInfo file = new FileInfo(filePath);
        //获取文件扩展名
        string fileExtenName = file.Extension;
        //重命名文件
        string fileNewName = DateTime.Now.ToString("yyyyMMddHHmmss") + fileExtenName;
        //保存路径
        string fileSavePath = Server.MapPath(@"~\uploadFile\images\lineimages\") + fileNewName;
                                                    
        FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read); 
        //把文件流中转化成字节数组              
        byte[] imageBytes = new byte[(int)fs.Length];
        fs.Read(imageBytes, 0, imageBytes.Length);
        fs.Close();
        MemoryStream ms = new MemoryStream(imageBytes);//定义并实例化一个内存流,以存放提交上来的字节数组。   
        FileStream fss = new FileStream(fileSavePath, FileMode.Create);
        ms.WriteTo(fss);
        fss.Close();
        ms.Close();           
路径自己改下

Answer 2

太多了直接百度或谷歌 asp.net上传图片

Answer 3

//FileUpload 上传控件
FileUpload1.SaveAs(Server.MapPath("~/Upload/" + fu.FileName));

Answer 4

if (FileUpload1.HasFile)
            {
                try
                {
                    //获得上传文件名
                    string fileName = this.FileUpload1.FileName.ToString();
                    //获得文件类型
                    string fileType = fileName.Substring(fileName.LastIndexOf('.'));
                    //用时间戳给文件重新命名
                    string SavefileName = DateTime.Now.ToString("yyyyMMddHHmmss") + DateTime.Now.Millisecond;
                    string Url = Server.MapPath("~/Styles/UpLoads/" + SavefileName + fileType);                    //把路径的"\\"替换成"/"
                    string newUrl = Url.Replace('\\', '/');                    for (int i = 0; i < 3; i++)
                        newUrl = newUrl.Substring(newUrl.IndexOf('/') + 1);
                    if (fileType == ".jpg" || fileType == ".gif" || fileType == ".png" || fileType == ".bmp" || fileType == ".GIF")
                    {
                        //把文件用控件上传到指定的文件夹
                        FileUpload1.SaveAs(Url);
                        FileStream fStream = new FileStream(Url, FileMode.Open);
                        StreamReader sReader = new StreamReader(fStream, System.Text.Encoding.Default);
                        fileSize(fStream);
                        //把文件的路径付给Image控件
                        upImg.ImageUrl = Page.ResolveUrl("/" + newUrl);
                        ClientScript.RegisterClientScriptBlock(typeof(string), "", "<script>$(function(){$('#ifream').css('display','none');$('#upTxtdiv').css('display','none'); $('#upImgdiv').css('display','block');$('#Uploadlittdiv').css('display','none');});</script>");
                    }
                    else if (fileType == ".txt" || fileType == ".pdf")
                    {                        if (fileType == ".pdf")
                        {
                            FileUpload1.SaveAs(Url);
                            FileStream fStream = new FileStream(Url, FileMode.Open);
                            StreamReader sReader = new StreamReader(fStream, System.Text.Encoding.Default);
                            fileSize(fStream);
                            //关闭流
                            sReader.Close();
                            fStream.Close();
                            //如何调用pdf2swf方法
                            pdf2swf(Url, Server.MapPath("Styles\\Flashes\\" + SavefileName + ".swf"));
                            //把pdf文件的路径给iframe的src属性
                            //this.RegisterClientScriptBlock("", "<script>$(function(){$('#ifream').css('display','block');$('#MainContent_upfream').attr('src','" + newUrl + "').css('display','block');});</script>");
                            //在存储swf文件的文件夹中查找当前所转换的文件是否存在，若存在则显示到浏览器上
                            bool boofile = false;                            do
                            {
                                boofile = File.Exists(Server.MapPath("Styles\\Flashes\\" + SavefileName + ".swf"));
                                if (boofile)
                                    break;
                            } while (!boofile);
                            //用StringBuilder给转换的swf文件拼接播放控件
                            StringBuilder sb = new StringBuilder();
                            sb.Append("<object classid=\"clsid:" + Guid.NewGuid() + "\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0\" width=\"100%\" height=\"100%\">");
                            sb.Append("<param name=\"movie\" value=\"Styles/Flashes/" + SavefileName + ".swf\">");
                            sb.Append("<param name=\"quality\" value=\"high\">");
                            sb.Append("<param name=\"wmode\" value=\"transparent\">");
                            sb.Append("<embed src=\"Styles/Flashes/" + SavefileName + ".swf\" width=\"100%\" height=\"100%\" quality=\"high\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" type=\"application/x-shockwave-flash\" wmode=\"transparent\"></embed>");
                            sb.Append("</object>");
                            ClientScript.RegisterClientScriptBlock(typeof(string), "", "<script>setTimeout(function(){$('#ifream').html('" + sb.ToString() + "');},2000);$(function(){$('#ifream').css('display','block');}); </script>");
                        }
                        else if (fileType == ".txt")
                        {
                            FileUpload1.SaveAs(Url);
                            FileStream fStream = new FileStream(Url, FileMode.Open);
                            StreamReader sReader = new StreamReader(fStream, System.Text.Encoding.Default);
                            fileSize(fStream);
                            //读取流到txtbox中
                            this.TextBox1.Text = sReader.ReadToEnd();
                            ClientScript.RegisterClientScriptBlock(typeof(string), "", "<script>$(function(){$('#ifream').css('display','none');$('#upTxtdiv').css('display','block');$('#upImgdiv').css('display','none');$('#Uploadlittdiv').css('display','none');});</script>");
                            //关闭流
                            sReader.Close();
                            fStream.Close();
                        }
                    }
                    else
                    {
                        this.uplab.Text = "";
                        ClientScript.RegisterClientScriptBlock(typeof(string), "", "<script>$(function(){$('#ifream').css('display','none');$('#upTxtdiv').css('display','none');$('#upImgdiv').css('display','none');$('#Uploadlittdiv').css('display','block');});</script>");                    }
                }
                catch
                {
                    //Response.Write(ex);
                    Response.Write("<script>alert('上传文件太大,请重新上传！'),location.href='UpLoadForm.aspx'</script>");
                }
            }
我这个写的多，不纯净，自己看看！