给图片加水印为什么加不下去呢？
日期：2014-05-17 浏览次数：21204 次
给图片加水印为什么加不上去呢？？
public void ProcessRequest(HttpContext context)
{ string path = context.Request.PhysicalPath;
string defaultPath = context.Server.MapPath("~/Images/default.jpg");
string watherPath = context.Server.MapPath("~/Images/WaterMark.jpg");
Image cover;
if (File.Exists(path))
{
Image water = Image.FromFile(watherPath);
cover= Image.FromFile(path);
Graphics g = Graphics.FromImage(cover);
g.DrawImage(water, cover.Width - water.Width, cover.Height - water.Height, water.Width, water.Height);
g.Dispose();}
else
{cover = Image.FromFile(defaultPath);}
context.Response.ContentType = "image/jpeg";
cover.Save(context.Response.OutputStream, ImageFormat.Jpeg);
cover.Dispose();
context.Response.End();
}
------解决方案--------------------
public void ProcessRequest(HttpContext context)
{ string path = context.Request.PhysicalPath;
string defaultPath = context.Server.MapPath("~/Images/default.jpg");
string watherPath = context.Server.MapPath("~/Images/WaterMark.jpg");
Image cover;
if (File.Exists(path))
{
Image water = Image.FromFile(watherPath);
cover= Image.FromFile(path);
Graphics g = Graphics.FromImage(cover);
g.DrawImage(water, cover.Width - water.Width, cover.Height - water.Height, water.Width, water.Height);
g.Dispose();}
else
{cover = Image.FromFile(defaultPath);}
context.Response.ContentType = "image/jpeg";
cover.Save(context.Response.OutputStream, ImageFormat.Jpeg);
cover.Dispose();
context.Response.End();
}
------解决方案--------------------
- C# code
string path = context.Request.PhysicalPath;
string water = context.Server.MapPath("~/image/water.jpg");
Image img = null;
if (!File.Exists(path))
{
string defaultPath = context.Server.MapPath("~/image/default.gif");
img = Image.FromFile(defaultPath);
}
else
{
img = Image.FromFile(path);
Image waterImage = Image.FromFile(water);
Graphics g = Graphics.FromImage(img);
g.DrawImage(waterImage, new Rectangle(img.Width - waterImage.Width, img.Height - waterImage.Height, waterImage.Width, waterImage.Height), new Rectangle(0, 0, waterImage.Width, waterImage.Height), GraphicsUnit.Pixel);
waterImage.Dispose();
g.Dispose();
}
img.Save(context.Response.OutputStream, ImageFormat.Jpeg);
img.Dispose();
context.Response.ContentType = "image/jpeg";
context.Response.End();
免责声明： 本文仅代表作者个人观点，与爱易网无关。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，请读者仅作参考，并请自行核实相关内容。
