MVC上传图片示例
和webform有点点区别，不是很大
视图：
<%Html.BeginForm("UpLoad", "UpImage", FormMethod.Post, new { enctype = "multipart/form-data" });%>
<div>
<input type="file" name="File1" size="30" />
<input type="submit" value="上传" />
</div>
<%Html.EndForm(); %>
控制器：
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Web;
using System.Web.Mvc;
namespace FirstMVC.Controllers
{
public class UpImageController : Controller
{
public ActionResult Index()
{
return View();
}
public ActionResult UpLoad()
{
if (UpLoadImage("~/UpImgs/"))
{
return Content("上传成功");
}
else
{
return Content("请确认上传的是图片");
}
}
public bool UpLoadImage(string imgPath)
{
bool f = false;
string fileName, fileExtension, GuidFileName;
HttpFileCollectionBase files = Request.Files;//组织客户ì端上载的文件
try
{
HttpPostedFileBase postedFile = files[0];
fileName = Path.GetFileName(postedFile.FileName);
if (fileName != "")
{
fileExtension = Path.GetExtension(fileName);
GuidFileName = Guid.NewGuid().ToString().Replace("-", "") + fileExtension;
if (postedFile.ContentType.ToString().IndexOf("image").ToString() != "-1")
{
postedFile.SaveAs(Request.MapPath(imgPath) + GuidFileName);
System.Drawing.Image image = System.Drawing.Image.FromFile(Server.MapPath(imgPath) + GuidFileName);
#region 加图片水印
//string watermarkPath = "~/UpImgs/";
//System.Drawing.Image copyrightImg = System.Drawing.Image.FromFile(Server.MapPath(watermarkPath) + "watermark.jpg");
////设置颜色矩阵
//int lucencyPercent = 40;
//float[][] matrixItems = {new float[]{1,0,0,0,0},
//new float[]{0,1,0,0,0},
//new float[]{0,0,1,0,0},
//new float[]{0,0,0,(float)lucencyPercent/100f,0},
//new float[]{0,0,0,0,1}
//};
//ColorMatrix colorMatrix = new ColorMatrix(matrixItems);
//ImageAttributes imgAttr = new ImageAttributes();
//imgAttr.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
////绘制阴影图象
//Graphics g = Graphics.FromImage(image);
//g.DrawImage(copyrightImg, new Rectangle(image.Width - copyrightImg.Width, image.Height - copyrightImg.Height, copyrightImg.Width, copyrightImg.Height), 0, 0, copyrightImg.Width, copyrightImg.Height, GraphicsUnit.Pixel, imgAttr);
//g.Dispose();
//image.Save(Server.MapPath(watermarkPath) + "watermark_" + GuidFileName);
//image.Dispose();
#endregion
#region 加文字水印
//Graphics g = Graphics.FromImage(image);
//g.DrawImage(image, 0, 0, image.Width, image.Height);
//Font font = new Font("Arial", 12);
//Brush b = new SolidBrush(Color.Chocolate);
//string addText = "秦迷空间";
//g.DrawString(addText, font, b, 10, 10);
//g.Dispose();
#endregion
image.Save(Server.MapPath(imgPath) + "Original_" + GuidFileName);
image.Dispose();
#region 生|¨2成¨|缩?略?图a?
int towidth, toheight;
System.Drawing.Image originalImage = System.Drawing.Image.FromFile(Server.MapPath(imgPath) + GuidFileName);
int ow = int.Parse(originalImage.Width.ToString());
int oh = int.Parse(originalImage.Height.ToString());
double dw = Convert.ToDouble(originalImage.Width.ToString());
double dh = Convert.ToDouble(originalImage.Height.ToString());
if (dw / dh > 4 / 3)
{
towidth = 200;
toheight = Convert.ToInt32(150 * dh / dw);
}
else
{
towidth = Convert.ToInt32(150 * dw / dh);
toheight = 150;
}
System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);
Graphics g1 = Graphics.FromImage(bitmap);
g1.InterpolationMode = InterpolationMode.High;
g1.SmoothingMode = SmoothingMode.HighQuality;
g1.Clear(Color.Transparent);
g1.DrawImage(originalImage, 0, 0, towidth, toheight);
g1.Dispose();
originalImage.Dispose();
originalImage = (System.Drawing.Image)bitmap.Clone();
originalImage.Save(Server.MapPath(imgPath) + "Thumb_" + GuidFileName, ImageFormat.Jpeg);
bitmap.Dispose();
#endregion
//删除原始图片
if (System.IO.File.Exists(Server.MapPath(imgPath) + GuidFileName))
{
System.IO.File.Delete(Server.MapPath(imgPath) + GuidFileName);
}
f = true;
}
else
{
f = false;
}
}
else
{
f = false;
}
}
catch
{
f = false;
}
return f;
}
}
}