<%@ language="javascript" codepage="65001" %><%
Boot();
function Boot()
{
if(Request.QueryString("Mode").Item != "Down") return ShowForm();
// 文件下载处理
if(!Application("TempName")) return Response.Write("No File");
Response.addHeader("Content-Disposition", "Attachment;filename=\"" + encodeURIComponent(Application("TempName")) + "\"");
Response.addHeader("Content-Length", Application("TempSize"));
Response.BinaryWrite(Application("TempFile"));
}
function ShowForm()
{ %><!doctype html><html><head>
<meta charset="UTF-8" />
<title>文件上传</title>
<style type="text/css">
body{ font: 4mm/7mm simsun }
</style>
</head><body><%
var up = new UploadClass;
if(Request.ServerVariables("REQUEST_METHOD").Item == "POST")
{
var str = up.ReadForm();
if(str != "OK") Response.Write(str);
else
{
var data = up.Form("test");
if(data[0].Data) Response.Write("您提交的文本为：" + data[0] + "<br />");
if(data[1].File)
{
Response.Write("您上传的文件是：<a href=\"?Mode=Down\">" + data[1].File + "</a> (" + data[1].Size + " bytes)<br />");
Application("TempFile") = data[1].Data;
Application("TempSize") = data[1].Size;
Application("TempName") = data[1].File;
}
}
}%><form method="post" enctype="multipart/form-data">
文本：<input name="test" /><br />
文件：<input name="test" type="file" />
<input type="submit" value="上传" /><br />
当前最大允许上传 <%= up.MaxSize %> Bytes，支持的文件类型：<%= up.Filter %><%
if(Application("TempName")) Response.Write("<br />当前的临时文件为：<a href=\"?Mode=Down\">" + Application("TempName") + "</a> (" + Application("TempSize") + " Bytes)");
%>
</form></body></html><% }
/* 文件上传类，支持多文件及文字混合上传 */
function UploadClass()
{
this.MaxSize = 512 * 1024;
this.Filter = "jpg|png|gif|bmp|doc|docx|txt|zip|rar";
var data = new Object; // 存储表单对象
this.ReadForm = function()
{
var nmbTotal = Request.TotalBytes;
if(nmbTotal > this.MaxSize) return "文件大小超过限制。";
var strRule = Request.ServerVariables("Http_Content_Type").Item || "";
strRule = (strRule.match(/boundary=(.+)/) || [])[1];
if(!strRule) return "非文件上传表单";
strRule = "2d2d" + strRule.replace(/[\w\-]/g, function($1){ return $1.charCodeAt(0).toString(16); });
var xml = new ActiveXObject("htmlfile").createElement("xml");
var root = xml.createElement("root"); root.dataType = "bin.hex";
var rcd = xml.recordset; rcd.fields.append("bin", 205, -1);
rcd.open(); rcd.addNew();
var nmbByte = 0, nmbRead = 200000; // 缓冲区大小
while(Response.IsClientConnected() && nmbByte < nmbTotal)
{
rcd(0).appendChunk(Request.BinaryRead(nmbRead));
nmbByte += nmbRead;
}
root.nodeTypedValue = rcd(0).value; rcd.close();
var arr = root.text.split(strRule); arr.shift(); arr.pop();
var reg = new RegExp("\\.(?:" + this.Filter + ")$", "i");
for(var i = 0; i < arr.length; i++)
{
var nmbSplit = arr[i].indexOf("0d0a0d0a");
// 此处仅支持UTF-8解码，gbk请借助rcd或流对象
var strHead = arr[i].slice(4, nmbSplit).replace(/(\w{2})/g, "%$1");
strHead = decodeURIComponent(strHead);
var strPath = (strHead.match(/filename="(.+?)"/i) || [])[1] || "";
strPath = (strPath.match(/([^\\\/]+)$/) || [])[1];
if(strPath && !reg.test(strPath)) return "不允许的文件类型。";
// 查找两个空行，忽略最后一个空行
root.text = arr[i].slice(nmbSplit + 8, -4);
var field = (strHead.match(/name="(.+?)"/i) || [])[1] || "";
if(!data[field]) data[field] = new Array;
data[field].push(
{
File : strPath, Size : root.text.length / 2,
Data : strPath ? root.nodeTypedValue : decodeURIComponent(root.text.replace(/(\w{2})/g, "%$1")),
toString : function(){ return this.Data; }
});
}
return "OK";
}
this.Form = function(strField)
{
var item = data[strField] || [];
return item.length < 2 ? item[0] : item;
}
} %>