文件上传
fileupload服务控件上传
int leng = FileUpload1.PostedFile.ContentLength;//获取文件大小 string fileName = FileUpload1.PostedFile.FileName;//获取文件名 if (!string.IsNullOrEmpty(fileName)) { string savePath = Server.MapPath("/image/");//上传的位置 string extName = System.IO.Path.GetExtension(fileName);//获取扩展名 string newName = Guid.NewGuid().ToString();//新文件名 string text = savePath + newName + extName;//路径+文件名+扩展名 FileUpload1.PostedFile.SaveAs(text);//保存 Response.Write("<script>alert('长传成功" + leng/1024000 + "')</script>"); } else { Response.Write("<script>alert('未选择上传文件')</script>"); }
input=“file”
1 if (Request.HttpMethod.ToLower() == "post")//form表单添加enctype="multipart/form-data" 2 { 3 HttpFileCollection files = Request.Files;//文件集合 4 HttpPostedFile file = files[0];//第一个文件 5 if (file!=null) 6 { 7 string fileName = file.FileName;//获取文件名 8 string ExtName = Path.GetExtension(fileName);//获取扩展名 9 string savePath = Server.MapPath("/image/");//保存的路径 10 string text = savePath+ fileName + ExtName; 11 file.SaveAs(text);//保存 12
using (Image oldImg = Image.FromStream(file.InputStream))//缩略图 { using (Image thumImg = new Bitmap(100, 100)) { using (Graphics g = Graphics.FromImage(thumImg)) { g.DrawImage(oldImg //要画的图片 , new Rectangle(0, 0, 100, 100) //表示要画到缩略图的哪个位置(画满整个缩略图) , new Rectangle(0, 0, oldImg.Width, oldImg.Height) //将原图整个画到缩略图 , GraphicsUnit.Pixel); //指定单位是像素 } //将缩略图保存到服务器的磁盘 //将缩略图保存到 image\ string thumphyPath = Server.MapPath("/image/"); string thumFullPath = thumphyPath + newfile; //获取缩略图的完整路径 thumImg.Save(thumFullPath); } }
13 } 14 }
文件大小限制
<system.webServer> <security> <requestFiltering> <requestLimits maxAllowedContentLength="1048576000" /><!--最大上传1G文件，--> </requestFiltering> </security> </system.webServer>
3.swfupload
1 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="Superior.OA.UI.WebForm2" %> 2 3 <!DOCTYPE html> 4 5 <html xmlns="http://www.w3.org/1999/xhtml"> 6 <head runat="server"> 7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 8 <title></title> 9 <script src="/js/jquery-1.7.1.min.js"></script> 10 <script src="/js/SwfUpload/swfupload.js"></script> 11 <script type="text/javascript"> 12 var swfu; 13 $(function () { 14 var swfOption = { 15 upload_url: "/WebForm2.aspx", 16 flash_url: "/js/SwfUpload/swfupload.swf", 17 button_placeholder_id: "swfu-placeholder", 18 file_size_limit: "20480",//大小 19 button_width: 200, //按钮宽度 20 button_height: 20, //按钮高度 21 button_text: '点我选择文件',//按钮文字 22 file_post_name: 'Filedata',//传回后台文件数组 23 file_types_description: "All Files",//文件类型 24 file_upload_limit: 0//文件数量限制 25 26 } 27 28 swfu = new SWFUpload(swfOption); 29 30 }) 31 function saveswf() { 32 swfu.startUpload(); 33 34 } 35 </script> 36 </head> 37 <body> 38 <form id="form1" runat="server"> 39 <div> 40 <div id="swfu-placeholder"></div> 41 <div> 42 <input type="button" value="上传 " onclick="saveswf()" /> 43 </div> 44 </div> 45 </form> 46 </body> 47 </html>
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using System.Web.UI; 6 using System.Web.UI.WebControls; 7 8 namespace Superior.OA.UI 9 { 10 public partial class WebForm2 : System.Web.UI.Page 11 { 12 protected void Page_Load(object sender, EventArgs e) 13 { 14 int number = Context.Request.Files.Count; 15 if (number>0) 16 { 17 getfile(number); 18 } 19 20 21 } 22 23 public void getfile(int number) 24 { 25 HttpPostedFile file; 26 number = Context.Request.Files.Count; 27 for (int i = 0; i < number; i++) 28 { 29 file = Context.Request.Files[i]; 30 string filename = file.FileName; 31 string path = Server.MapPath("/file/"); 32 string test = path + filename; 33 file.SaveAs(path+filename); 34 } 35 } 36 } 37 }
