一个用asp生成条形码的例子代码。(注意：生成的图形为html代码,而非图片，打印时，请在IE的Internet选项=>高级＝》打印 选定“打印背景颜色和图像”)
演示地址：http://www.51windows.net/myfile/asp/codeflag.asp
更简单的方法就是使用条形码字体，下载：http://www.51windows.net/2004/share/font/tiaoma.rar（如果地址无法下载，请在Google上搜索"条形码 字体"）。
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta name="Keywords" content="51windows.Net"> <META NAME="Author" CONTENT="haiwa"> <title>Asp生成条形码</title> <style> <!-- * {font:menu} --> </style> </head> <body> <% '条形码生成程序 '海娃@2004-4-4 'http://www.51windows.Net function haiwaocde(zfstr) zf = zfstr zf = replace(zf,"0","_|_|__||_||_|") zf = replace(zf,"1","_||_|__|_|_||") zf = replace(zf,"2","_|_||__|_|_||") zf = replace(zf,"3","_||_||__|_|_|") zf = replace(zf,"4","_|_|__||_|_||") zf = replace(zf,"5","_||_|__||_|_|") zf = replace(zf,"7","_|_|__|_||_||") zf = replace(zf,"6","_|_||__||_|_|") zf = replace(zf,"8","_||_|__|_||_|") zf = replace(zf,"9","_|_||__|_||_|") zf = replace(zf,"a","_||_|_|__|_||") zf = replace(zf,"b","_|_||_|__|_||") zf = replace(zf,"c","_||_||_|__|_|") zf = replace(zf,"d","_|_|_||__|_||") zf = replace(zf,"e","_||_|_||__|_|") zf = replace(zf,"f","_|_||_||__|_|") zf = replace(zf,"g","_|_|_|__||_||") zf = replace(zf,"h","_||_|_|__||_|") zf = replace(zf,"i","_|_||_|__||_|") zf = replace(zf,"j","_|_|_||__||_|") zf = replace(zf,"k","_||_|_|_|__||") zf = replace(zf,"l","_|_||_|_|__||") zf = replace(zf,"m","_||_||_|_|__|") zf = replace(zf,"n","_|_|_||_|__||") zf = replace(zf,"o","_||_|_||_|__|") zf = replace(zf,"p","_|_||_||_|__|") zf = replace(zf,"r","_||_|_|_||__|") zf = replace(zf,"q","_|_|_|_||__||") zf = replace(zf,"s","_|_||_|_||__|") zf = replace(zf,"t","_|_|_||_||__|") zf = replace(zf,"u","_||__|_|_|_||") zf = replace(zf,"v","_|__||_|_|_||") zf = replace(zf,"w","_||__||_|_|_|") zf = replace(zf,"x","_|__|_||_|_||") zf = replace(zf,"y","_||__|_||_|_|") zf = replace(zf,"z","_|__||_||_|_|") zf = replace(zf,"-","_|__|_|_||_||") zf = replace(zf,"*","_|__|_||_||_|") zf = replace(zf,"/","_|__|__|_|__|") zf = replace(zf,"%","_|_|__|__|__|") zf = replace(zf,"+","_|__|_|__|__|") zf = replace(zf,".","_||__|_|_||_|") haiwaocde = zf end function code_H = 52 code_W = 2 function dragcode(ccode) c = ccode c = replace(c,"_","<span style='height:"&code_H&";width:"&code_w&";background:#FFFFFF'></span>") c = replace(c,"|","<span style='height:"&code_H&";width:"&code_w&";background:#000000'></span>") dragcode = c end function function dragtext(ccode) c = ccode dragtext = "" for i=1 to len(c) dragtext = dragtext&"<span style='width:26;text-align:center'>"&mid(c,i,1)&"</span>" next dragtext = dragtext end function Function CheckExp(patrn,str) Set regEx=New RegExp regEx.Pattern=patrn regEx.IgnoreCase=true regEx.Global=True CheckExp = regEx.test(str) End Function code = request("c") if code = "" then code = "*51windows.net*" else if Checkexp("^[abcdefghijklmnopqrstuvwxyz1234567890\+\-\*\/\%\$\.]*$",code) then code = "*"&code&"*" else code = "*51windows.net*" errstr = "<br><center style='color:red;'>含有非法字符 </center>" end if end if ocode = code code = lcase(code) %> <center><form name="form1" method="post">合法字符：ABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890 + - * / % $ .<br><br><input name="c" type="text" value="<%=request("c")%>" size="25" maxlength="15"> <input type="submit" name="Submit" value="提交"></form><center> <div align="center"> <center> <table border="0" cellpadding="0" cellspacing="0" height="79"> <tr> <td height="61" align="center"><%=dragcode(haiwaocde(code))%></td> </tr> <tr> <td height="18" align="center" style="text-align:justify;text-justify:Distribute-all-lines;"><%=(ocode)%></td> </tr> </table> </center> </div> <%=errstr%> </body> </html>
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