ASP instance: A simple ASP component-free upload class

Author：Eve Cole Update Time：2025-05-10 01:48:01

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A simple ASP component-free upload class is sent out for everyone to see. Can do experiments!

The following is the quoted content:

<%@ language=javascript%>

var self = Request.serverVariables(SCRIPT_NAME);

if (Request.serverVariables(REQUEST_METHOD)==POST)

{

var oo = new uploadFile();

oo.path = myFile; //Storage path, empty means the current path, default is uploadFile

oo.named = file; //Name method, date means naming with date, file means using file name itself, default is file

oo.ext = all; //The extensions allowed to upload, all means that they are allowed, and the default is all

oo.over = true; //Whether to overwrite when the same file name exists, the default is false

oo.size = 1*1024*1024; //The maximum number of bytes is limited, the default is 1G

oo.upload();

Response.write('<script type=text/javascript>location.replace(' self ')</script>');

}

//ASP component-free upload class

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 = all;

this.over = false;

this.size = 1*1024*1024*1024; //1GB

//Upload file

this.upload = function ()

{

var o = this.getInfo();

if (o.size>this.size)

{

alert(the file is too large and cannot be uploaded!);

return;

}

var f = this.getFileName();

var ext = f.replace(/^. /./,);

if (this.ext!=all&&!new RegExp(this.ext.replace(/,/g,|),ig).test(ext))

{

alert (currently, file uploads with ext extension are not supported!);

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(uploaded successfully!);

}

catch(e)

{

alert(sorry, this file already exists!);

}

oo.close();

delete(oo);

}

//Get binary and file bytes

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() 12;

var sLength=bLen-(gbCode.substring(0,gbCode.indexOf()).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 };

}

//Get file name

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>ASP component-free upload class</title>

</head>

<body>

<form action=<%=self%> method=post enctype=multipart/form-data onSubmit=return (this.upFile.value!='');>

<input type=submit value=upload file/

</form>

</body>

</html>

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