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用XML+FSO+JS实现服务器端文件的选择

王朝asp·作者佚名 2006-01-08

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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

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

'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>

<!--

/*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=\"javascript:parent.userlist('"+folders+oItem.children.item(1).text+"/"+"',1)\"><img src=\"images/mediafolder.gif\" border=0 >"+oItem.children.item(1).text+"</A></td></tr>";

}

else

{

strshow+="<tr><td><a href=\"javascript:parent.addfile('"+oItem.children.item(1).text+"')\" ><img src=\"images/mediafile.gif\" border=0>"+oItem.children.item(1).text+"</A></td></tr>";

}

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=\"javascript:parent.userlist('"+folders+oItem.children.item(1).text+"/"+"',1)\"><img src=\"images/mediafolder.gif\" border=0>"+oItem.children.item(1).text+"</A>";

}

else

{

arrff[i]="<A href=\"javascript:parent.addfile('"+oItem.children.item(1).text+"')\"><img src=\"images/mediafile.gif\" border=0 height=12>"+oItem.children.item(1).text+"</A>";

}

//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;