代码如下:
<BR /><% <BR />Dim Jpeg ''''//声明变量 <BR />Set Jpeg = Server.CreateObject("Persits.Jpeg") ''''//调用组件 <BR />Jpeg.Open Server.MapPath("aaa.JPG") ''''//源图片位置 <BR />Jpeg.Canvas.Font.Color = &H000000 ''''//水印字体颜色 <BR />Jpeg.Canvas.Font.Family = "宋体" ''''//水印字体 <BR />Jpeg.Canvas.Font.Size = 14 ''''//水印字体大小 <BR />Jpeg.Canvas.Font.Bold = False ''''//是否粗体，粗体用：True <BR />Jpeg.Canvas.Font.BkMode = &HFFFFFF ''''//字体背景颜色 <BR />Jpeg.Canvas.Print 10, 10, "不败顽童工作室" ''''//水印文字，两个数字10为水印的xy座标 <BR />Jpeg.Save Server.MapPath("aaa_05.jpg") ''''//生成有水印的新图片及保存位置 <BR />Set Jpeg = Nothing ''''//注销组件，释放资源 <BR />Response.Write "<img src=aaa_05.jpg>" ''''//在该页显示生成水印后的图片 <BR />%> <BR /> <BR />ASP图片水印AspJpeg v1.8 特别版<BR /><STRONG>二、生成缩略图</STRONG> <BR /><span><U></U></span> 代码如下:<BR /><% <BR />Dim Jpeg ''''//声明变量 <BR />Set Jpeg = Server.CreateObject("Persits.Jpeg") ''''//调用组件 <BR />Jpeg.Open Server.MapPath("aaa.JPG") ''''//原图位置 <BR />Jpeg.Width = Jpeg.OriginalWidth/4 ''''//设图片宽度为原图的四分之一 <BR />Jpeg.Height = Jpeg.OriginalHeight/4 ''''//设图片高度为原图的四分之一 <BR />Jpeg.Sharpen 1, 130 ''''//设定锐化效果 <BR />Jpeg.Save Server.MapPath("aaa_small.jpg") ''''//生成缩略图位置及名称 <BR />Set Jpeg = Nothing ''''//注销组件，释放资源 <BR />Response.Write "<img src=aaa_small.jpg>" ''''//在该页显示生成缩略图 <BR />%> <BR /> <BR /><STRONG>aspjpeg组件高级使用方法介绍</STRONG> <BR />aspjpeg是一款非常强大的图片处理组件，纯英文版本。不过早已经有免费版和破解版，但是对其进行详细与深入介绍的文章却是不多，即使有也只牵涉到图片缩略和图片水印。可能是因为纯英文的缘故。 <BR />这里我就是针对这些问题谈谈aspjpeg的高级用法。这里的技术主要包括： <BR />图片缩略 <BR />图片水印 <BR />安全码技术 <BR />图片切割 <BR />图片合并 <BR />数据库支持 <BR /><STRONG>更多不常用的方法介绍</STRONG> <BR />以及相关的一些实用技术 <BR />aspjpeg唯一点不足的就是输出方式比较单一。在这里，我们主要谈将图片处理保存后再调用的这种输出方法。另外，本人比较懒，所以有些代码仍然引用于原文档，不懂的地方偶会加以解释！ 学过vb或者.net的同志肯定一看就明白了。刷子来着。呵呵。
一、图片缩略
代码如下:
<BR /><% <BR />Set Jpeg = Server.CreateObject("Persits.Jpeg") 调用组件 <BR />Path = Server.MapPath("images") & "clock.jpg" 待处理图片路径 <BR />Jpeg.Open Path 打开图片 <BR />高与宽为原图片的1/2 <BR />Jpeg.Width = Jpeg.OriginalWidth / 2 <BR />Jpeg.Height = Jpeg.OriginalHeight / 2 <BR />保存图片 <BR />Jpeg.Save Server.MapPath("images") & "clock_small.jpg" <BR />%> <BR /> <BR /><IMG SRC="images/clock_small.jpg"> 查看处理的图片 <BR /><STRONG>二、图片水印</STRONG> <BR /><span><U></U></span> 代码如下:<BR /><% <BR />Set Jpeg = Server.CreateObject("Persits.Jpeg") <BR />Jpeg.Open Server.MapPath("images/dodge_viper.jpg") <BR />开始写文字 <BR />Jpeg.Canvas.Font.Color = &H000000'''' white 颜色 <BR />Jpeg.Canvas.Font.Family = "Courier New" 字体 <BR />Jpeg.Canvas.Font.Bold = True 是否加粗 <BR />Jpeg.Canvas.Print 10, 10, "Copyright (c) XYZ, Inc." <BR />打印坐标x 打印坐标y 需要打印的字符 <BR />以下是对图片进行边框处理 <BR />Jpeg.Canvas.Pen.Color = &H000000'''' black 颜色 <BR />Jpeg.Canvas.Pen.Width = 2 画笔宽度 <BR />Jpeg.Canvas.Brush.Solid = False 是否加粗处理 <BR />Jpeg.Canvas.Bar 1, 1, Jpeg.Width, Jpeg.Height <BR />起始X坐标 起始Y坐标 输入长度 输入高度 <BR />Jpeg.Save Server.MapPath("images/dodge_viper_framed.jpg") 保存 <BR />%> <BR /> <BR /><STRONG>三、安全码</STRONG> <BR />安全玛的道理和加水印差不多，很多朋友问我要具体的代码技术，在这里我就写出来和大家分享，一般人我还不告诉他。呵呵。 <BR /><span><U></U></span> 代码如下:<BR /><% <BR />生成安全码的函数 www.51frw.cn <BR />function make_randomize(max_len,w_n) max_len 生成长度，w_n：0 可能包含字母，1：只为数字 <BR />randomize <BR />for intcounter=1 to max_len <BR />whatnext=int((1-0+1)*rnd+w_n) <BR />if whatnext=0 then <BR />upper=122 <BR />lower=97 <BR />else <BR />upper=57 <BR />lower=48 <BR />end if <BR />strnewpass=strnewpass & chr(int((upper-lower+1)*rnd)+lower) <BR />next <BR />make_randomize=strnewpass <BR />end function <BR />%> <BR /> <BR />生成安全码的图片。当然你要预先准备一张背景图哦 <BR /><span><U></U></span> 代码如下:<BR /><%random_num=make_randomize(4,1) 生成4位数字的安全码 <BR />session("random_num")=random_num 为什么调用session，没有session的安全码是完全没有意义的。呵呵 <BR />Set Jpeg = Server.CreateObject("Persits.Jpeg") 调用组件 <BR />Jpeg.Open Server.MapPath("infos/random_pic/random_index.gif") 打开准备的图片 <BR />Jpeg.Canvas.Font.Color = &H006699 <BR />Jpeg.Canvas.Font.Family = "Arial Black" <BR />Jpeg.Canvas.Font.Bold = false <BR />Jpeg.Canvas.PrintText 0, -2, random_num <BR />jpeg.save Server.MapPath("infos/random_pic/random_index.bmp") 保存 <BR />%> <BR /> <BR /><img src="infos/random_pic/random_index.bmp" border="0" align="absmiddle"> <BR />自己做做看。呵呵。 <BR /><STRONG>四、图片切割</STRONG> <BR />一直以来，对aspjpeg不了解的人以为是无法用它来进行切割的。 <BR />其实有这样的一个方法的 <BR />crop x1,y1,x2,y2 <BR />切割长方型左上角x坐标，y坐标 右下角x坐标 y坐标 <BR />下面我就做一个演示哈 <BR />Set Jpeg = Server.CreateObject("Persits.Jpeg") <BR />jpeg.open server.MapPath("/pic/1.gif") <BR />jpeg.width=70 <BR />Jpeg.Height = Jpeg.OriginalHeight*70 / jpeg.Originawidth <BR />jpeg.crop 0,0,70,52 开始切割其实是把超过52象素的下部分去掉 <BR />jpeg.save server.MapPath("/temp_pic/small_1.gif") 保存 <BR />怎么样，很简单吧<br /><br /><STRONG>五、图片合并</STRONG> <BR />我们这里是要把logo图片加到dodge_viper.jpg图片上去 <BR />其实，图片合并的方法也可以用来动态打水印哦 <BR /><span><U></U></span> 代码如下:<BR />Set Photo = Server.CreateObject("Persits.Jpeg") <BR />PhotoPath = Server.MapPath("images") & "dodge_viper.jpg" <BR />Photo.Open PhotoPath <BR />Set Logo = Server.CreateObject("Persits.Jpeg") <BR />LogoPath = Server.MapPath("images") & "clock.jpg" <BR />Logo.Open LogoPath <BR />Logo.Width = 70 <BR />Logo.Height = Logo.Width * Logo.OriginalHeight / Logo.OriginalWidth <BR />Photo.DrawImage 0, 0, Logo <BR />Photo.SendBinary <BR /> <BR />这里用了sendBinary的输出方法。当然，你也可以先保存更改后的dodge_viper.jpg，再输入也可以。我个人不大喜欢用sendBinary方法，在网速慢的时候容易出错。在速度方面也不怎样。呵呵。 <BR />六、数据库支持 <BR />这里不多说了。其实就是Binary方法，大家知道图片存进数据库只能存为二进制的文件的。所以代码就懒的写了。 <br /><br /><STRONG>七、更多方法介绍</STRONG> <BR />Canvas.Line(Left, Top, Right, Bottom) <BR />画一条直线 <BR />Canvas.Ellipse(Left, Top, Right, Bottom) <BR />画出一个椭圆 <BR />Canvas.Circle(X, Y, Radius) <BR />画出一个圆 <BR />Canvas.Bar(Left, Top, Right, Bottom) <BR />画出一个长方形，上面有代码介绍了 <BR />Canvas.Font.ShadowColor <BR />文字阴影颜色 <BR />Canvas.Font.ShadowXOffset As Long <BR />阴影X坐标设定 <BR />Canvas.Font.ShadowYOffset As Long <BR />Y坐标设定 <BR />Canvas.Font.BkMode As String <BR />文字背景 <BR />======================================== <BR />今天给大家讲的是ASP给图片加水印的知识 <BR />ASP给图片加水印是需要组件的...常用的有aspjpeg和中国人自己开发的wsImage...前者有30天的免费...后者完全免费...当然我们要用国人的产品了..嘿嘿.. <BR /><STRONG>注册组件的方法</STRONG>: <BR />命令提示符下输入"regsvr32 [Dll路径]" 就可以了 <BR />图片添加水印无非就是获得图片大小,然后把水印写上去..ASP代码只是起个控制组件的作用.用代码来说明一切吧. <br /><br /><STRONG>一:获得图片大小</STRONG>(这里是用象素值表示的.学PhotoShop的朋友都应该明白) <BR /><span><U></U></span> 代码如下:<BR /><% <BR />set obj=server.CreateObject("wsImage.Resize") ''''''''调用组件 <BR />obj.LoadSoucePic server.mappath("25.jpg") ''''''''打开图片,图片名字是25.jpg <BR />obj.GetSourceInfo iWidth,iHeight <BR />response.write "图片宽度:" & iWidth & "<br>" ''''''''获得图片宽度 <BR />response.write "图片高度:" & iHeight & "<br>" ''''''''获得图片高度 <BR />strError=obj.errorinfo <BR />if strError<>"" then <BR />response.write obj.errorinfo <BR />end if <BR />obj.free <BR />set obj=nothing <BR />%> <BR /> <BR /><STRONG>二:添加文字水印</STRONG> <BR /><span><U></U></span> 代码如下:<BR /><% <BR />set obj=server.CreateObject("wsImage.Resize") <BR />obj.LoadSoucePic server.mappath("25.jpg") ''''''''装载图片 <BR />obj.Quality=75 <BR />obj.TxtMarkFont = "华文彩云" ''''''''设置水印文字字体 <BR />obj.TxtMarkBond = false ''''''''设置水印文字的粗细 <BR />obj.MarkRotate = 0 ''''''''水印文字的旋转角度 <BR />obj.TxtMarkHeight = 25 ''''''''水印文字的高度 <BR />obj.AddTxtMark server.mappath("txtMark.jpg"), "带你离境", &H00FF00&, 10, 70 <BR />strError=obj.errorinfo ''''''''生成图片名字,文字颜色即水印在图片的位置 <BR />if strError<>"" then <BR />response.write obj.errorinfo <BR />end if <BR />obj.free <BR />set obj=nothing <BR />%> <BR /> <BR /><STRONG>三:添加图片水印</STRONG> <BR /><span><U></U></span> 代码如下:<BR /><% <BR />set obj=server.CreateObject("wsImage.Resize") <BR />obj.LoadSoucePic server.mappath("25.jpg") ''''''''装载图片 <BR />obj.LoadImgMarkPic server.mappath("blend.bmp") ''''''''装载水印图片 <BR />obj.Quality=75 <BR />obj.AddImgMark server.mappath("imgMark.jpg"), 315, 220,&hFFFFFF, 70 <BR />strError=obj.errorinfo ''''''''生成图片名字,文字颜色即水印在图片的位置 <BR />if strError<>"" then <BR />response.write obj.errorinfo <BR />end if <BR />obj.free <BR />set obj=nothing <BR />%> <BR /> <BR />其实给图片添加水印就这么简单.然后我在说下WsImage.dll组件的另外两个主要用法.包括: <BR />剪裁图片,生成图片的缩略图. <br /><br />还是以我得习惯,用代码加注释说明: <BR /><STRONG>剪裁图片</STRONG>: <BR /><span><U></U></span> 代码如下:<BR /><% <BR />set obj=server.CreateObject("wsImage.Resize") <BR />obj.LoadSoucePic server.mappath("25.jpg") <BR />obj.Quality=75 <BR />obj.cropImage server.mappath("25_crop.jpg"),100,10,200,200 ''''''''定义裁减大小和生成图片名字 <BR />strError=obj.errorinfo <BR />if strError<>"" then <BR />response.write obj.errorinfo <BR />end if <BR />obj.free <BR />set obj=nothing <BR />%> <BR /> <BR />详细注释:裁减图片用到了WsImage的CropImage方法.其中定义生成图片时候,100,10是左上角的裁减点,即离图片左边是100象素,顶端10象素.后两个200代表的是裁减的宽带和高和高度. <BR />生成图片缩略图: <BR /><span><U></U></span> 代码如下:<BR /><% <BR />set obj=server.CreateObject("wsImage.Resize") <BR />obj.LoadSoucePic server.mappath("25.jpg") ''''''''加载图片 <BR />obj.Quality=75 <BR />obj.OutputSpic server.mappath("25_s.jpg"),0.5,0.5,3 ''''''''定义缩略图的名字即大小 <BR />strError=obj.errorinfo <BR />if strError<>"" then <BR />response.write obj.errorinfo <BR />end if <BR />obj.free <BR />set obj=nothing <BR />%> <BR /> <BR />详细说明: <BR /><STRONG>产生缩略图共有四种导出方式</STRONG>： <BR />(1) obj.OutputSpic server.mappath("25_s.jpg"),200,150,0 <BR />200为输出宽，150为输出高，这种输出形式为强制输出宽高，可能引起图片变形。 <BR />(2) obj.OutputSpic server.mappath("25_s.jpg"),200,0,1 <BR />以200为输出宽，输出高将随比列缩放。 <BR />(3) obj.OutputSpic server.mappath("25_s.jpg"),0,200,2 <BR />以200为
输出高，输出宽将随比列缩放。 <BR />(4) obj.OutputSpic server.mappath("25_s.jpg"),0.5,0.5,3 <BR />第一个0.5表示生成的缩略图是原图宽的一半，即表示宽缩小比例。 <BR />第二个0.5表示生成的缩略图是原图高的一半，即表示高缩小比例。 <BR />宽高的缩小比例一致意味着将对原图进行比例缩小。宽高的缩放比例如果大于1，则对原图进行放大。 <BR />转自：http://hi.baidu.com/miracle521/blog/item/e3419133fdc00746ac4b5f25.html <BR />2----------------------------------------------------------------------------------- <BR />asp.net上传图片加水印(文字水印，图片水印，文字+图片水印) <BR />传图片加水印(文字水印，图片水印，文字+图片水印) <BR />效果图： <br /><br />图<img src="/upload/getfiles/0001/2021/4/23/20210423031303918.jpg" alt="ASP组件AspJpeg(加水印)生成缩略图等使用方法 - 文章图片" />500)this.width=500" border=0<
<P style="TEXT-INDENT: 2em">水印<img src="/upload/getfiles/0001/2021/4/23/20210423031303966.jpg" alt="ASP组件AspJpeg(加水印)生成缩略图等使用方法 - 文章图片" />500)this.width=500" border=0<</P>
<P style="TEXT-INDENT: 2em">给图片加水印以后（注意右上角+正下方）<BR /><img src="/upload/getfiles/0001/2021/4/23/20210423031303995.jpg" alt="ASP组件AspJpeg(加水印)生成缩略图等使用方法 - 文章图片" />500)this.width=500" border=0<</P>代码： <BR />DrawImg.cs <BR /><span><U></U></span> 代码如下:<BR />using System; <BR />using System.Drawing; <BR />using System.Drawing.Imaging; <BR />using System.Drawing.Drawing2D; <BR />public class DrawImg <BR />{ <BR />private string WorkingDirectory = string.Empty ; //路径 <BR />private string ImageName = string.Empty; //被处理的图片 <BR />private string ImageWater = string.Empty; //水印图片 <BR />private string FontString = string.Empty; //水印文字 <br /><br />enum DealType{NONE,WaterImage,WaterFont,DoubleDo}; //枚举命令 <BR />private DealType dealtype; <br /><br />public DrawImg() <BR />{} <BR />public string PublicWorkingDirectory <BR />{ <BR />get <BR />{ <BR />return WorkingDirectory; <BR />} <BR />set <BR />{ <BR />WorkingDirectory = value; <BR />} <BR />} <BR />public string PublicImageName <BR />{ <BR />get <BR />{ <BR />return ImageName; <BR />} <BR />set <BR />{ <BR />ImageName = value; <BR />} <BR />} <br /><br />public string PublicImageWater <BR />{ <BR />get <BR />{ <BR />return ImageWater; <BR />} <BR />set //设置了水印图片的话说明是要水印图片效果的 <BR />{ <BR />dealtype = DealType.WaterImage; <BR />ImageWater = value; <BR />} <BR />} <BR />public string PublicFontString <BR />{ <BR />get <BR />{ <BR />return FontString; <BR />} <BR />set //设置了水印文字的话说明是要水印文字效果的 <BR />{ <BR />dealtype = DealType.WaterFont; <BR />FontString = value; <BR />} <BR />} <br /><br />public void DealImage() <BR />{ <BR />IsDouble(); <BR />switch( dealtype ) <BR />{ <BR />case DealType.WaterFont: WriteFont(); break; <BR />case DealType.WaterImage: WriteImg(); break; <BR />case DealType.DoubleDo: WriteFontAndImg(); break; <BR />} <BR />} <BR />private void IsDouble() <BR />{ <BR />if(ImageWater+""!="" && FontString+""!="") <BR />{ <BR />dealtype = DealType.DoubleDo; <BR />} <BR />} <BR />private void WriteFont() <BR />{ <BR />//set a working directory <BR />//string WorkingDirectory = @"C:Watermark_srcWaterPic"; <BR />//define a string of text to use as the Copyright message <BR />//string Copyright = "Copyright ?2002 - AP Photo/David Zalubowski"; <BR />//create a image object containing the photograph to watermark <BR />Image imgPhoto = Image.FromFile(WorkingDirectory + ImageName); <BR />int phWidth = imgPhoto.Width; <BR />int phHeight = imgPhoto.Height; <BR />//create a Bitmap the Size of the original photograph <BR />Bitmap bmPhoto = new Bitmap(phWidth, phHeight, PixelFormat.Format24bppRgb); <BR />bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); <BR />//load the Bitmap into a Graphics object <BR />Graphics grPhoto = Graphics.FromImage(bmPhoto); <BR />//------------------------------------------------------------ <BR />//Step #1 - Insert Copyright message <BR />//------------------------------------------------------------ <BR />//Set the rendering quality for this Graphics object <BR />grPhoto.SmoothingMode = SmoothingMode.AntiAlias; <BR />//Draws the photo Image object at original size to the graphics object. <BR />grPhoto.DrawImage( <BR />imgPhoto, // Photo Image object <BR />new Rectangle(0, 0, phWidth, phHeight), // Rectangle structure <BR />0, // x-coordinate of the portion of the source image to draw. <BR />0, // y-coordinate of the portion of the source image to draw. <BR />phWidth, // Width of the portion of the source image to draw. <BR />phHeight, // Height of the portion of the source image to draw. <BR />GraphicsUnit.Pixel); // Units of measure <BR />//------------------------------------------------------- <BR />//to maximize the size of the Copyright message we will <BR />//test multiple Font sizes to determine the largest posible <BR />//font we can use for the width of the Photograph <BR />//define an array of point sizes you would like to consider as possiblities <BR />//------------------------------------------------------- <BR />int[] sizes = new int[]{16,14,12,10,8,6,4}; <BR />Font crFont = null; <BR />SizeF crSize = new SizeF(); <BR />//Loop through the defined sizes checking the length of the Copyright string <BR />//If its length in pixles is less then the image width choose this Font size. <BR />for (int i=0 ;i<7; i++) <BR />{ <BR />//set a Font object to Arial (i)pt, Bold <BR />//crFont = new Font("arial", sizes[i], FontStyle.Bold); <BR />crFont = new Font("arial",sizes[i],FontStyle.Bold); <BR />//Measure the Copyright string in this Font <BR />crSize = grPhoto.MeasureString(FontString, crFont); <BR />if((ushort)crSize.Width < (ushort)phWidth) <BR />break; <BR />} <BR />//Since all photographs will have varying heights, determine a <BR />//position 5% from the bottom of the image <BR />int yPixlesFromBottom = (int)(phHeight *.05); <BR />//Now that we have a point size use the Copyrights string height <BR />//to determine a y-coordinate to draw the string of the photograph <BR />float yPosFromBottom = ((phHeight - yPixlesFromBottom)-(crSize.Height/2)); <BR />//Determine its x-coordinate by calculating the center of the width of the image <BR />float xCenterOfImg = (phWidth/2); <BR />//Define the text layout by setting the text alignment to centered <BR />StringFormat StrFormat = new StringFormat(); <BR />StrFormat.Alignment = StringAlignment.Center; <BR />//define a Brush which is semi trasparent black (Alpha set to 153) <BR />SolidBrush semiTransBrush2 = new SolidBrush(Color.FromArgb(153, 0, 0, 0)); <BR />//Draw the Copyright string <BR />grPhoto.DrawString(FontString, //string of text <BR />crFont, //font <BR />semiTransBrush2, //Brush <BR />new PointF(xCenterOfImg+1,yPosFromBottom+1), //Position <BR />StrFormat); <BR />//define a Brush which is semi trasparent white (Alpha set to 153) <BR />SolidBrush semiTransBrush = new SolidBrush(Color.FromArgb(153, 255, 255, 255)); <BR />//Draw the Copyright string a second time to create a shadow effect <BR />//Make sure to move this text 1 pixel to the right and down 1 pixel <BR />grPhoto.DrawString(FontString, //string of text <BR />crFont, //font <BR />semiTransBrush, //Brush <BR />new PointF(xCenterOfImg,yPosFromBottom), //Position <BR />StrFormat); <BR />imgPhoto = bmPhoto; <BR />grPhoto.Dispose(); <BR />//save new image to file system. <BR />imgPhoto.Save(WorkingDirectory + ImageName + "_finally.jpg", ImageFormat.Jpeg); <BR />imgPhoto.Dispose(); <BR />//Text alignment <BR />} <BR />
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