基于Jquery插件Uploadify实现实时显示进度条上传图片_jquery

 
 
LOGO图标：
 

 
 

 
 
 

 请上传LOGO图标！
 

 尺寸72px*72px，png格式,建议使用 图标PSD模板 制作
 
 

 

 

 

 (64*64)
 
 

 

 (48*48)
 
 

 

 (32*32)
 
 

 

 (16*16)
 
 
 
 
 
 

/// 

 /// 上传文件
 /// 
 public class UploadApplogo : IHttpHandler
 {
 System.Drawing.Image image, image64, image48, image32, image16; //定义image类的对象
 protected string imagePath;//图片路径
 protected string imageType;//图片类型
 protected string imageName;//图片名称
 protected string fileName;//图片名称
 //提供一个回调方法,用于确定Image对象在执行生成缩略图操作时何时提前取消执行
 //如果此方法确定 GetThumbnailImage 方法应提前停止执行，则返回 true；否则返回 false
 System.Drawing.Image.GetThumbnailImageAbort callb = null;

 public void ProcessRequest(HttpContext context)
 {
 context.Response.ContentType = "text/plain";
 HttpPostedFile UploadImage = context.Request.Files["FileData"];
 //物理路径
 string uploadpath = HttpContext.Current.Server.MapPath(context.Request["folder"] + "\\");

 if (UploadImage != null)
 {
 //是否有目录，如没有就创建
 if (!Directory.Exists(uploadpath))
 {
 Directory.CreateDirectory(uploadpath);
 }
 //客户端文件完全名称
 string filename = UploadImage.FileName;
 string extname = filename.Substring(filename.LastIndexOf(".") + 1);
 //为不重复，设置文件名
 fileName = Guid.NewGuid().ToString() + "." + extname;

 //context.Response.Write("1");
 context.Response.Write(fileName);
 }
 else
 {
 context.Response.Write("0");
 }

 string mPath; 

 imagePath = UploadImage.FileName;
 //取得图片类型
 imageType = imagePath.Substring(imagePath.LastIndexOf(".") + 1);
 //取得图片名称
 imageName = imagePath.Substring(imagePath.LastIndexOf("\\") + 1);
 Stream imgStream = UploadImage.InputStream;//流文件，准备读取上载文件的内容
 int imgLen = UploadImage.ContentLength;//上载文件大小

 //建立虚拟路径
 mPath = HttpContext.Current.Server.MapPath(context.Request["folder"]);
 //保存到虚拟路径
 UploadImage.SaveAs(mPath + "\\" + fileName);
 ////显示原图
 //imageSource.ImageUrl = "upFile/" + imageName;
 //为上传的图片建立引用
 image = System.Drawing.Image.FromFile(mPath + "\\" + fileName);

 //生成缩略图
 image64 = image.GetThumbnailImage(64, 64, callb, new System.IntPtr());
 //把缩略图保存到指定的虚拟路径
 image64.Save(HttpContext.Current.Server.MapPath(context.Request["folder"]) + "\\64_" + fileName);
 //释放image64对象的资源
 image64.Dispose();

 //生成缩略图
 image48 = image.GetThumbnailImage(48, 48, callb, new System.IntPtr());
 image48.Save(HttpContext.Current.Server.MapPath(context.Request["folder"]) + "\\48_" + fileName);
 image48.Dispose();

 //生成缩略图
 image32 = image.GetThumbnailImage(32, 32, callb, new System.IntPtr());
 image32.Save(HttpContext.Current.Server.MapPath(context.Request["folder"]) + "\\32_" + fileName);
 image32.Dispose();

 //生成缩略图
 image16 = image.GetThumbnailImage(16, 16, callb, new System.IntPtr());
 image16.Save(HttpContext.Current.Server.MapPath(context.Request["folder"]) + "\\16_" + fileName);
 image16.Dispose();

 //释放image对象占用的资源
 image.Dispose();
 }

 public bool IsReusable
 {
 get
 {
 return false;
 }
 }
 }