<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> </head> <body> <form action="ProcessFileUp.ashx" method="post" enctype="multipart/form-data"> <input type="file" name="fileup" /> <input type="submit" value="上传" /> </form> </body> </html>
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.IO; namespace CZBK.ItcastProject.WebApp._2015_5_27 { /// <summary> /// ProcessFileUp 的摘要说明 /// </summary> public class ProcessFileUp : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/html"; HttpPostedFile file= context.Request.Files[0];//获取上传的文件 if (file.ContentLength>0) { //对上传的文件类型进行校验 string fileName =Path.GetFileName(file.FileName);//获取上传文件的名称，包含扩展名 string fileExt = Path.GetExtension(fileName);//获取用户上传的文件扩展名 if (fileExt==".jpg") { //对上传文件进行重命名 string newfileName = Guid.NewGuid().ToString(); //将上传的文件放在不同目录下 string dir = "/ImageUpload/"+DateTime.Now.Year+"/"+DateTime.Now.Month+"/"+DateTime.Now.Day+"/"; //创建文件夹 if (!Directory.Exists(context.Request.MapPath(dir))) { Directory.CreateDirectory(context.Request.MapPath(dir)); } //文件的完整路径 string fullDir = dir + newfileName + fileExt; //注意：保存一定要用context.Request.MapPath来回去路径 file.SaveAs(context.Request.MapPath(fullDir)); context.Response.Write("<html><body><img src='"+fullDir+"'></body></html>"); //file.SaveAs(context.Request.MapPath("/ImageUpload/"+fileName));//完成文件的保存 //context.Response.Write("<html><body><img src='/ImageUpload/" + fileName + "'></body></html>"); } else { context.Response.Write("只能上传图片文件"); } } else { context.Response.Write("请选择上传文件"); } } public bool IsReusable { get { return false; } } } }