/** * browseFolder.js * 該文件定義了BrowseFolder()函數，它將提供一個文件夾選擇對話框 * 以供用戶實現對系統文件夾選擇的功能 * 文件夾選擇對話框起始目錄由 * Shell.BrowseForFolder(WINDOW_HANDLE, Message, OPTIONS, strPath)函數 * 的strPath參數設置 * 例如：0x11--我的電腦 * 0 --桌面 * "c://"--系統C盤 * * 用如下代碼把該函數應用到一個HTML文件中： * <script src="browseFolder.js"></script> * 或把下面代碼直接COPY到<script language="javascript">...</script>標簽中； * * 用一般的觸發函數均可在HTML文件中使用該函數 * 例如：<input type="button" onclick="BrowseFolder()" /> * 注意：請定義NAME為savePath的輸入框接收或顯示返回的值，例如： * <input type="text" name="savePath" /> * * 特別注意的是,由於安全方面的問題,你還需要如下設置才能使本JS代碼正確運行, * 否者會出現"沒有權限"的問題. * * 1、設置可信任站點（例如本地的可以為：http://localhost） * 2、其次：可信任站點安全級別自定義設置中：設置下面的選項 * "對沒有標記為安全的ActiveX控件進行初始化和腳本運行"----"啟用" */ function BrowseFolder(){ try{ var Message = "請選擇文件夾"; //選擇框提示信息 var Shell = new ActiveXObject( "Shell.Application" ); var Folder = Shell.BrowseForFolder(0,Message,0x0040,0x11);//起始目錄為：我的電腦 //var Folder = Shell.BrowseForFolder(0,Message,0); //起始目錄為：桌面 if(Folder != null){ Folder = Folder.items(); // 返回 FolderItems 對象 Folder = Folder.item(); // 返回 Folderitem 對象 Folder = Folder.Path; // 返回路徑 if(Folder.charAt(Folder.length-1) != "//"){ Folder = Folder + "//"; } //document.all.savePath.value=Folder; document.getElementById("savePath").value=Folder;//savePath是指輸出的控件id。 return Folder; } }catch(e){ alert(e.message); } }
另外一種不存在安全問題的方法是使用js自己來實現文件夾選擇，會丑一些。
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>無標題文檔</title>
</head>
<body>
<table border="0" cellpadding="0" width="100%" id="tb_show">
<tr>
<td width="18%">文件保存位置:</td>
<td width="82%">
<%--<html:file property="file" size="40" styleClass="inputbox"/>--%>
<input name="backDir" type="text" value ="C:\" size="100" width="500">
</td>
</tr>
<tr>
<td>目錄位置:</td>
<td>
<select name="tables_drive" id="tables_drives" onchange="get_drives()" ></select>
</td>
</tr>
<tr>
<td colspan="2">
<select name="table_folder" id="table_folder" size="10" multiple ondblclick="get_file()"></select>
</td>
</tr>
</table>
</body>
</html>
<script>
/**
*初始化，將系統所有的驅動器放入table_drives列表
*/
window.onload = new function init()
{
var fso, s, n, e, x;
fso = new ActiveXObject("Scripting.FileSystemObject");
e = new Enumerator(fso.Drives);
s = "";
for (; !e.atEnd(); e.moveNext())
{
x = e.item();
s = s + x.DriveLetter;
s += ":";
if (x.DriveType == 3)
n = x.ShareName;
else if (x.IsReady)
n = x.VolumeName;
else
n = "[驅動器未就緒]";
s += n + ",";
}
var drives = s.split(",");
var tableDrives = document.getElementById("tables_drives");
for ( var i = 0; i < drives.length-1; i++ )
{
var option = document.createElement("OPTION");
drives[i].split(":");
option.value = "["+drives[i].split(":")[0]+":]"+drives[i].split(":")[1];
option.text = "["+drives[i].split(":")[0]+":]"+drives[i].split(":")[1];
tableDrives.add(option);
}
}
/*
*tables_drives列表中選中的驅動器上所有文件夾放入table_folder列表中
*/
function get_drives()
{
var tableDrives = document.getElementById("tables_drives");
var tableFolders = document.getElementById("table_folder");
for ( var i = 0; i < tableDrives.options.length; i++ )
{
if ( tableDrives.options[i].selected == true )
{
var fso, f, fc, s;
var drive = tableDrives.options[i].value.split(":")[0].substring(1,tableDrives.options[i].value.split(":")[0].length);
document.getElementById("backDir").value = drive + ":\\";
fso = new ActiveXObject("Scripting.FileSystemObject");
if (fso.DriveExists(drive))
{
d = fso.GetDrive(drive);
if ( d.IsReady )
{
f = fso.GetFolder(d.RootFolder);
fc = new Enumerator(f.SubFolders);
s = "";
for (;!fc.atEnd(); fc.moveNext())
{
s += fc.item();
s += ",";
}
var len = tableFolders.options.length;
while(len >= 0)
{
tableFolders.options.remove(len);
len--;
}
var option = document.createElement("OPTION");
option.value = drive + ":\\";
option.text = drive + ":\\";
tableFolders.add(option);
var folders = s.split(",");
for ( j = 0; j < folders.length -1; j++)
{
option = document.createElement("OPTION");
option.value = folders[j];
option.text = folders[j];
tableFolders.add(option);
}
}
else
{
alert("無法改變當前內容！")
}
}
else
return false;
}
}
}
/**
*table_folder雙擊選項中的一個選項，就將該文件夾下面的文件夾顯示在table_folder列表中。
*/
function get_file()
{
var tableFolders = document.getElementById("table_folder");
var tableDrives = document.getElementById("tables_drives");
for ( var i = 0; i < tableFolders.options.length; i++ )
{
if ( tableFolders.options[i].selected == true )
{
var fso, f, fc, s;
var folderpath = tableFolders.options[i].value.substring(0,tableFolders.options[i].value.length);
if ( folderpath.charAt(folderpath.length-1) == "\\" )
{
document.getElementById("backDir").value = folderpath;
}
else
{
document.getElementById("backDir").value = folderpath + "\\";
}
fso = new ActiveXObject("Scripting.FileSystemObject");
f = fso.GetFolder(folderpath);
fc = new Enumerator(f.SubFolders);
s = "";
for (;!fc.atEnd(); fc.moveNext())
{
s += fc.item();
s += ",";
}
var len = tableFolders.options.length;
while(len >= 0)
{
tableFolders.options.remove(len);
len--;
}
var opt = "";
var opt1 = "";
for ( j = 0; j < folderpath.split("\\").length; j++ )
{
var option = document.createElement("OPTION");
opt = opt + folderpath.split("\\")[j]+"\\";
if ( j > 0)
{
opt1 = opt;
option.value = opt1.substring(0,opt1.length-1);
option.text = opt1.substring(0,opt1.length-1);
tableFolders.add(option);
}
else
{
option.value = opt;
option.text = opt;
tableFolders.add(option);
}
}
if ( tableFolders.options[0].value == tableFolders.options[1].value )
{
tableFolders.options.remove(1);
}
if ( s != "" )
{
var folders = s.split(",");
for ( j = 0; j < folders.length -1; j++)
{
option = document.createElement("OPTION");
option.value = folders[j];
option.text = folders[j];
tableFolders.add(option);
}
}
}
}
}
</script>