用XML+FSO+JS实现服务器端文件的


答案：
首先在服务器端先创建一个程序可以生成XML文件，以返回客户端，（getfolder.asp）

<%

'written by Linzhang Chen ,2003-4-20 

' 转载请注明出处和保留此版权信息 

response.write "<?xml version=""1.0"" encoding=""GB2312""?>"&chr(13)

response.write "<mediafile>"&chr(13)

folders=request("folder")

if folders="/" then

folders=""

end if

dim count

count=0

folders=replace(folders,"..","")

basefolder="../media/"'基准的文件夹路径

newfolder=basefolder&folders

Set fso =server.CreateObject("Scripting.FileSystemObject")

set f=fso.getfolder(server.mappath(newfolder))

set sf=f.subfolders

for each fd in sf'返回指定路径下面的文件夹列表

response.write "<file>"&chr(13)

response.write "<ftype>folder</ftype>"&chr(13)

response.write "<fname>"&fd.name&"</fname>"&chr(13)

response.write "</file>"&chr(13)

count=count+1

next

set sf=nothing

set ff=f.Files

for each fi in ff

fname=fi.name

if instr("asf,wma,wmv",lcase(mid(fname,instrrev(fname,".")+1)))>0 then'设定允许返回的文件类型，防止源码泄露

response.write "<file>"&chr(13)

response.write "<ftype>file</ftype>"&chr(13)

response.write "<fname>"&fname&"</fname>"&chr(13)

response.write "</file>"&chr(13)

count=count+1

end if

next

'如果该目录下没有文件，就发一个空元素

if count=0 then

response.write "<file>"&chr(13)

response.write "<ftype>empty</ftype>"&chr(13)

response.write "<fname>0</fname>"&chr(13)

response.write "</file>"&chr(13)

end if

response.write "</mediafile>"

set ff=nothing

set f=nothing

set fso=nothing

%>

下面就是客户端的JS的功夫了(selectfile.asp)

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML>

<HEAD>

<TITLE> 选择视频文件 </TITLE>

<style>

td{font-size:9pt}

select{width:210}

.s2{width:250}

</style>

<SCRIPT LANGUAGE="javascript">

<!--

/*written by Linzhang Chen ,2003-4-20 

 转载请注明出处和保留此版权信息 */


//预装载图片

 var imgback = new Image();

imgback.src = "images/arrow.gif";

 var imgbackgray = new Image();

imgbackgray.src = "images/grayarrow.gif";

 var imgfolder = new Image();

imgfolder.src = "images/folder.gif";

 var imggrayfolder = new Image();

imggrayfolder.src = "images/grayfolder.gif";

//历史记录数组栈

var arrhistory=new Array();

var hisi=0;

//用来确定要返回文件名

function check()

{

if (document.all.filename.value=="")

{

alert("请先选择文件");

return false;

}

else

{

window.returnValue =document.f1.folder.value+document.all.filename.value;

window.close();

}

}

//取得XML文件的内容

function getuserlist(url)

{ var oXMLDoc = new ActiveXObject('MSXML');

 oXMLDoc.url = url;

 var ooRoot=oXMLDoc.root;

return ooRoot;

 }

//当选中一个文件时，把这个值返回给文本框

function addfile(txt)

{

document.all.filename.value=txt;

}


var first=1;//定义一个全局变量


function userlist(folders,ti)//列出所选框

{document.f1.folder.value=folders; 

filebox.document.body.innerHTML="正在加载文件，请稍侯...";

 var strshow="";

 var timeoutid=null;

 var newfolder="";

 var arrfolder=new Array();

 var arrff=new Array();

 var blankstr="";

 var oItem;

 //确定历史状态

 hisi+=ti;

 arrhistory[hisi]=folders;

 if (hisi==0)

 {

 arrow.innerHTML="<img src=\"images/grayarrow.gif\">";

 }

 else

 {

 arrow.innerHTML="<img src=\"images/arrow.gif\" border=0 style=\"cursor:hand\" onclick=\"userlist('"+arrhistory[hisi-1]+"',-1)\" onmouseover=\"this.src='images/arrow_over.gif'\" onmouseout=\"this.src='images/arrow.gif'\">";

 }

 //确定当前的文件夹

 if (document.f1.folder.value=="")

 {

 folderid.innerHTML="<img src=\"images/grayfolder.gif\">"

 }

 else

 {newsfolder=checkfolder(document.f1.folder.value)

 folderid.innerHTML="<img src=\"images/folder.gif\" border=0 style=\"cursor:hand\" onclick=\"userlist('"+newsfolder+"',1)\" onmouseover=\"this.src='images/folder_over.gif'\" onmouseout=\"this.src='images/folder.gif'\">"

 }

 //给下拉框赋值

 document.all.select.options.length=0;

 newfolder=folders;

 folderstr=""

 var _obj=document.all.select;

 var _o=document.createElement("Option");

 _o.text="选择文件夹";

 _o.value="";

 _obj.add(_o);

 if (newfolder!="")

 {arrfolder=newfolder.split("/")

 for(var i=0;i<arrfolder.length-1;i++)

 {blankstr+=" ";

 folderstr+=arrfolder[i]+"/";

 _o=document.createElement("Option");

 _o.text=blankstr+arrfolder[i];

 _o.value=folderstr;

 _obj.add(_o);


 }

 }

document.all.select.options[document.all.select.options.length-1].selected=true;

 url="getfolder.asp.gl?folder="+folders;

 oRoot=getuserlist(url)

 strshow="<table class=file cellspacing=0 cellpadding=0>";

 len=oRoot.children.length;

 if (len==1)

 {oItem = oRoot.children.item(0);

 if(oItem.children.item(0).text=="empty")

 strshow="没有文件和文件夹了";

 else

 {

 if(oItem.children.item(0).text=="folder")

 {

 strshow+="<tr><td><A href=> }

 else

 {

 strshow+="<tr><td><a href=>
 }

 }

 strshow+="</table>"

 }

 else{

 //数据入栈

 for(i=0;i<len;i++)

 { oItem = oRoot.children.item(i);

 if(oItem.children.item(0).text=="folder")

 {

 arrff[i]="<A href=> }

 else

 {

 arrff[i]="<A href=>
 }

 }

 //取得要输出的列数

 if (len<=6)

 {x=1;

 y=6;}

 else

 {x=len/6;

 y=6;}

 for(var i=0;i<y;i++)

 {strshow+="<tr>"

 for(var j=0;j<x;j++)

 {ponits=j*y+i;

 if (ponits>=len)

 {

 strshow+="<td> </td>";

 }

 else

 {

 strshow+="<td>"+arrff[ponits]+"</td>";

 }
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