上传文件是个数据源的传送过程，所以一定会有二进制的存在，否则就不是传送，而是建立一个空的文件而已
代码有，只是很复杂，怕你看不懂不知道如何修改
程序代码：
<%@ language="javascript"%>
<%
var self = Request.serverVariables("SCRIPT_NAME");
if (Request.serverVariables("REQUEST_METHOD")=="POST"){
var oo = new uploadFile();
oo.path = "pic/"; //存放路径,为空表示当前路径,默认为uploadFile
oo.named = "file"; //命名方式,date表示用日期来命名,file表示用文件名本身,默认为file
oo.ext = "jpg,gif"; //允许上传的扩展名,all表示都允许,默认为all
oo.over = true; //当存在相同文件名时是否覆盖,默认为false
oo.size = 1*1024*1024; //最大字节数限制,默认为1G
oo.upload();
Response.write('<script type="text/javascript">location.replace("'+self+'")</script>');
}
//ASP无组件上传类
function uploadFile(){
var bLen = Request.totalBytes;
var bText = Request.binaryRead(bLen);
var oo = Server.createObject("ADODB.Stream");
oo.mode = 3;
this.path = "uploadFile";
this.named = "file";
this.ext = "jpg,gif";
this.over = true;
this.size = 1*1024*1024*1024; //1GB
//文件上传
this.upload = function (){
var o = this.getInfo();
if (o.size>this.size) {alert("文件过大,不能上传!"); return;}
var f = this.getFileName();
var ext = f.replace(/^.+\./,"");
if (this.ext!="all"&&!new RegExp(this.ext.replace(/,/g,"|"),"ig").test(ext)) {alert("目前暂不支持扩展名为 "+ext+" 的文件上传!"); return;}
if (this.named=="date") {f = new Date().toLocaleString().replace(/\D/g,"") + "." + ext;}
oo.open();
oo.type = 1;
oo.write(o.bin);
this.path = this.path.replace(/[^\/\\]$/,"$&/");
var fso = Server.createObject("Scripting.FileSystemObject");
if (this.path!=""&&!fso.folderExists(Server.mapPath(this.path))) {fso.createFolder(Server.mapPath(this.path));}
try {oo.saveToFile(Server.mapPath(this.path+f),this.over?2:1); alert("上传成功!");}
catch(e) {alert("对不起，此相片已存在，请把文件名改成其它名称！");}
oo.close();
delete(oo);
}
//获取二进制和文件字节数
this.getInfo = function (){
oo.open();
oo.type=1;
oo.write(bText);
oo.position = 0;
oo.type=2;
oo.charset="unicode";
var gbCode=escape(oo.readText()).replace(/%u(..)(..)/g,"%$2%$1");
var sPos=gbCode.indexOf("%0D%0A%0D%0A")+12;
var sLength=bLen-(gbCode.substring(0,gbCode.indexOf("%0D%0A")).length/3)-sPos/3-6;
oo.close();
oo.open();
oo.type = 1;
oo.write(bText);
oo.position=sPos/3;
var bFile=oo.read(sLength);
oo.close();
return {bin:bFile,size:sLength};
}
//获取文件名
this.getFileName = function (){
oo.open();
oo.type = 2;
oo.writeText(bText);
oo.position = 0;
oo.charset = "gb2312";
var fileName = oo.readText().match(/filename=\"(.+?)\"/i)[1].split("\\").slice(-1)[0];
oo.close();
return fileName;
}
function alert(msg) {Response.write('<script type="text/javascript">alert("'+msg+'");</script>');}
}
%>
<html>
<head>
<title>上传相片</title>
<meta http-equiv="content-Type" content="text/html; charset=gb2312">
<script language="Javascript">
function ValidInput() {
var upfile=document.upform.upfile.value;
if (trim(upfile)=="") {alert("请选择上传文件！"); document.upform.upfile.focus(); return false;
function trim(s) {return s.replace(/(^\s*)|(\s*$)/g,"");}
}}
</script>
</head>
<body>
<form name="upform" action="<%=self%>" method="post" enctype="multipart/form-data" onsubmit="return ValidInput()">
上传我的相片：<input type="file" name="upfile" /> <input type="submit" value="上传" style="cursor:pointer;" /> （注意：只能上传格式为 .gif 和 .jpg 的图片）
</form>
</body>
</html>
2008-02-13 18:48
