如何在jsp页中实现浏览本地硬盘文件夹的功能
我搜索了好久都没找到合适的，只好发帖寻求帮助了。
大家都用过迅雷吧，我想实现的功能就是像迅雷中点击下载后出现的存储目录后面那个浏览按钮的功能，点击一下能看到本地硬盘的所有文件夹，选择一个目录点击确定就自动添加到按钮前面的对话框里了。
小弟，初学者想破脑袋都不知给如何实现，希望高手指点啊。
能尽量说的详细点，最好能分步骤说清楚，偶很菜的。。
先谢谢了！
把能给的积分全花上。。
[解决办法]
lz的意思是不是点击"下载"以后可以自己选择路径然后下载吗?
是的话,有很多封装好的js都可以实现,上网搜一下
[解决办法]
迅雷的是用自己写的COM 来调用的。
[解决办法]
<input type="file" > 看看先
[解决办法]
<input type=file id="mxh">
<input type=button onclick="alert(document.all.mxh.value)" value="get">
[解决办法]
结帖就给分了
[解决办法]
参考一下这个帖子，应该能完成你的功能!
http://topic.csdn.net/t/20021223/21/1293167.html
[解决办法]
就是file啊！哎！
[解决办法]
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</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>目录位置:</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>
<tr>
<td colspan="2">
<font color="red">说明：双击列表框的一个选项，就将该文件夹下面的文件夹显示在该列表框中。第一个就是根目录</font>
</td>
</tr>
</table>
</body>
</html>
<script>
/*
*初始化，将系统所有的驱动器放入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 = "[驱动器未就绪]";
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列表中选中的驱动器上所有文件夹放入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("无法改变当前内容！")
}
}
else
return false;
}
}
}
/*
*table_folder双击选项中的一个选项，就将该文件夹下面的文件夹显示在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>
