#region 3.1.3 保存裁剪后的图片方法 +ContentResult TemplateCropImg()/// <summary>/// 保存裁剪后的图片方法/// </summary>/// <returns></returns>[HttpPost]public ContentResult TemplateCropImg(){string imageUrl = Request.Form["imgUrl"]; //要剪裁图片的地址int imageWidth = Convert.ToInt32(Request.Form["imgInitW"]); //原图宽度int imageHeight = Convert.ToInt32(Request.Form["imgInitH"]); //原图高度int imageW = Convert.ToInt32(Math.Round(Convert.ToDouble(Request.Form["imgW"]))); //缩放后宽度int imageH = Convert.ToInt32(Math.Round(Convert.ToDouble(Request.Form["imgH"]))); //缩放后高度int cropWidth = Convert.ToInt32(Request.Form["cropW"]); //剪裁宽度int cropHeight = Convert.ToInt32(Request.Form["cropH"]); //剪裁高度int x = Convert.ToInt32(Request.Form["imgX1"]); //剪裁时X坐标int y = Convert.ToInt32(Request.Form["imgY1"]); //剪裁时Y坐标string returnData = string.Empty;//原始图片using (Image image = Image.FromFile(Server.MapPath(imageUrl))){//将图片缩放Bitmap bitmap = new Bitmap(imageW, imageH);Graphics graph = Graphics.FromImage(bitmap);//设置画布的描绘质量graph.CompositingQuality = CompositingQuality.HighQuality;graph.SmoothingMode = SmoothingMode.HighQuality;graph.InterpolationMode = InterpolationMode.HighQualityBicubic;graph.DrawImage(image, new Rectangle(0, 0, imageW, imageH), new Rectangle(0, 0, imageWidth, imageHeight), GraphicsUnit.Pixel);MemoryStream memoryStream = new MemoryStream();bitmap.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Bmp);//缩放后的图片Image zoomImage = Image.FromStream(memoryStream);//将缩放后的图片进行裁剪bitmap = new Bitmap(cropWidth, cropHeight);graph = Graphics.FromImage(bitmap);//清空画布并以透明背景色填充graph.Clear(Color.Transparent);graph.DrawImage(zoomImage, 0, 0, new Rectangle(x, y, cropWidth, cropHeight), GraphicsUnit.Pixel);//得到裁剪后的图片string filePath = System.Configuration.ConfigurationManager.AppSettings["UploadDir"] + DateTime.Now.ToString("yyyyMMdd") + "/";if (!Directory.Exists(Server.MapPath(filePath))){Directory.CreateDirectory(Server.MapPath(filePath));}string fileName = filePath + DateTime.Now.Ticks + ".png";bitmap.Save(Server.MapPath(fileName), System.Drawing.Imaging.ImageFormat.Png);graph.Dispose();bitmap.Dispose();returnData = "{'status':'success','url':'" + fileName + "'}";}//删除之前上传的图片System.IO.File.Delete(Server.MapPath(imageUrl));return Content(returnData);}#endregion